CN110202937B - Method, device and equipment for detecting nozzle of spray head, ink-jet printer and medium - Google Patents
Method, device and equipment for detecting nozzle of spray head, ink-jet printer and medium Download PDFInfo
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- CN110202937B CN110202937B CN201810168361.5A CN201810168361A CN110202937B CN 110202937 B CN110202937 B CN 110202937B CN 201810168361 A CN201810168361 A CN 201810168361A CN 110202937 B CN110202937 B CN 110202937B
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- 238000007641 inkjet printing Methods 0.000 claims abstract description 22
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
- B41J2/16579—Detection means therefor, e.g. for nozzle clogging
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Abstract
The invention discloses a method, a device and equipment for detecting a nozzle of a spray head, an ink-jet printer and a medium. The method for detecting the nozzle of the spray head comprises the following steps: acquiring detection time for detecting all nozzles, and when the nozzles of the spray head are started to be detected, acquiring ink jet starting time and ink jet stopping time for simultaneously jetting ink by all the nozzles according to the detection time; sending a detection signal to pass through the preset jetting tracks of all the nozzles simultaneously according to the ink jetting starting time and the ink jetting stopping time of all the nozzles, wherein the preset jetting tracks are the motion tracks of ink drops jetted by the nozzles when the nozzles are normal; controlling all nozzles to jet ink simultaneously and obtaining feedback signals of the detection signals after the detection signals pass through the preset jetting tracks of all the nozzles; and determining whether each nozzle of the sprayer is abnormal or not according to the feedback signal. The method avoids the influence of the abnormal nozzle on the printed product during formal printing by detecting whether the abnormal nozzle exists in the spray head before formal printing.
Description
Technical Field
The invention relates to the technical field of ink-jet printing, in particular to a method, a device and equipment for detecting a nozzle of a spray head, an ink-jet printer and a medium.
Background
The ink-jet printing technology is a technology for jetting ink drops to a printing medium through a nozzle on a nozzle to obtain images or characters, is non-contact printing, and has the technical advantages of high printing speed, low pollution, bright image color, long image retention period, adaptability to various printing media and the like, and the technology is widely applied to the fields of advertisement manufacturing, office stationery, printing and proofing and the like. The ink-jet printing technology mainly comprises reciprocating scanning printing, one-time scanning printing, multi-nozzle side-by-side scanning printing and the like, wherein the reciprocating scanning printing is also called multi-pass scanning printing, the multi-pass scanning printing refers to that each unit of an image to be printed can be printed only by carrying out interpolation for multiple times, each unit consists of a plurality of pixel points, if the 2-pass scanning printing is carried out, each unit consists of 2 pixel points, and if the 3-pass scanning printing is carried out, each unit consists of 3 pixel points; the one-time scanning printing is also called single pass scanning printing, and the single pass scanning printing means that each unit of the image to be printed can be printed only by one-time scanning; the method comprises the following steps of (1) side-by-side scanning and printing of multiple spray heads is also called onepass scanning and printing, and onepass scanning and printing refers to finishing one-time printing of an image to be printed; the feathering technology in the ink-jet printing can increase the scanning times of a certain area of the image to be printed and improve the precision of the printed image. As shown in fig. 1, which is a schematic diagram of 4pass scanning printing, an area a (or referred to as an image) of an image to be printed needs to be covered and printed 4 times, and the area a is composed of a plurality of units B, and each unit B is composed of 4 pixels; the data of the area a is divided into 4 data blocks of a data block a1, a data block a2, a data block A3 and a data block a4, the 4 data blocks are printed by different nozzles of the head, the moving direction of the printing medium is L1 in fig. 1, and the moving direction of the head is Z1 in fig. 1. When the nozzle is at the 1 st pass, the data block A1 of the area A is printed by the J1 part of the nozzle; the moving distance of the printing medium at the 1 st pass is equal to the length of the J1 portion of the nozzle in the L1 direction. When the nozzle is at the 2 nd pass, the data block A2 of the area A is printed by the J2 part of the nozzle; the printing medium moves by a distance equal to the length of the J2 part of the nozzle, and the data block A3 of the area A is printed by the J3 part of the nozzle at the 3 rd pass; the print medium is moved a distance equal to the length of the J3 portion of the head at the 4 th pass, and the data block a4 of the area a is printed by the J4 portion of the head. And 4 times of covering the area A of the image to be printed by different parts of the spray head, and printing the image corresponding to the area A.
No matter which printing mode is adopted for printing, the abnormal state of the nozzle of the ink-jet printer can be caused by ink path pollution, ink precipitation, dust, water vapor and the like after the nozzle of the ink-jet printer works for a long time, and if the nozzle of the ink-jet printer is still used after the abnormal state, the problems of pull lines, blanks and the like of printed images can be caused, so that the quality of products is seriously influenced, and therefore, the development of a method for checking whether the nozzle of the ink-jet printer is abnormal becomes necessary.
Disclosure of Invention
The embodiment of the invention provides a method, a device and equipment for detecting a nozzle of a spray head, an ink-jet printer and a medium, which are used for detecting whether an abnormal nozzle exists in the spray head before formal printing and avoiding the influence of the abnormal nozzle on a printed product during formal printing.
In a first aspect, an embodiment of the present invention provides a method for detecting a nozzle of a nozzle, where the method includes:
acquiring detection time for detecting all nozzles, and when the nozzles of the spray head are started to be detected, acquiring ink jet starting time and ink jet stopping time for simultaneously jetting ink by all the nozzles according to the detection time;
sending a detection signal to pass through the preset jetting tracks of all the nozzles simultaneously according to the ink jetting starting time and the ink jetting stopping time of all the nozzles, wherein the preset jetting tracks are the motion tracks of ink drops jetted by the nozzles when the nozzles are normal;
controlling all nozzles to jet ink simultaneously and obtaining feedback signals of the detection signals after the detection signals pass through the preset jetting tracks of all the nozzles;
and determining whether each nozzle of the sprayer is abnormal or not according to the feedback signal.
Preferably, the method further includes, before the acquiring a detection time for detecting all nozzles, and when the nozzles of the head are detected in an activated state, obtaining a start ink ejection time and a stop ink ejection time for ejecting ink simultaneously from all nozzles according to the detection time:
and acquiring the designated position information for detecting the spray head, and controlling the spray head and the sensor for sending the detection signal to move to the designated position.
Preferably, the designated position includes a starting printing position of the nozzle, and the starting printing position is a position of the nozzle after the inkjet control system is reset.
Preferably, the controlling all the nozzles to eject ink simultaneously and obtaining the feedback signal after the detection signal passes through the predetermined ejection tracks of all the nozzles includes:
controlling all nozzles on the spray head to flash at the same time to obtain a detection starting signal;
and controlling all nozzles to jet ink simultaneously according to the detection starting signal and obtaining a feedback signal of the detection signal after the detection signal passes through the preset jetting tracks of all the nozzles.
Preferably, the sensor is a lidar sensor.
Preferably, the feedback signal includes nozzle orientation information and nozzle ink ejection information.
In a second aspect, an embodiment of the present invention provides a device for detecting a nozzle of a spray head, where the device includes:
the detection time acquisition module is used for acquiring the detection time for detecting all the nozzles, and when the nozzles of the spray head are started to be detected, the ink jet starting time and the ink jet stopping time for simultaneously jetting ink by all the nozzles are obtained according to the detection time;
the detection signal sending module is used for sending detection signals to pass through preset jetting tracks of all the nozzles simultaneously according to the ink jetting starting time and the ink jetting stopping time of all the nozzles, and the preset jetting tracks are motion tracks of ink drops jetted by the nozzles when the nozzles are normal;
the feedback signal acquisition module is used for controlling all the nozzles to jet ink simultaneously and obtaining feedback signals of the detection signals after the detection signals pass through the preset jetting tracks of all the nozzles;
and the nozzle state judging module is used for determining whether each nozzle of the sprayer is abnormal or not according to the feedback signal.
In a third aspect, an embodiment of the present invention provides a nozzle detection apparatus, including: at least one processor, at least one memory, and computer program instructions stored in the memory, when executed by the processor, perform the method of the first aspect of the embodiments described above.
In a fourth aspect, an embodiment of the present invention provides a medium, on which computer program instructions are stored, wherein when the computer program instructions are executed by a processor, the method according to the first aspect of the foregoing embodiments is performed.
In a fifth aspect, an embodiment of the present invention provides an inkjet printer, including nozzles, each of which includes at least one nozzle, and further including a nozzle detection device, where the nozzle detection device is the nozzle detection device in the foregoing embodiment.
In summary, according to the method, the device, the apparatus, the inkjet printer, and the medium for detecting nozzles of a nozzle provided by the embodiments of the present invention, by acquiring detection time for detecting all nozzles, when the nozzles of the nozzle are started to be detected, a time when all nozzles start to jet ink and a time when all nozzles stop to jet ink are obtained according to the detection time, sending a detection signal, controlling all nozzles to jet ink at the same time, and obtaining a feedback signal after the detection signal passes through the predetermined jetting tracks of all nozzles; and finally, determining abnormal nozzle information of the spray head according to the feedback signal. The method avoids the influence of the abnormal nozzle on the printed product during formal printing by detecting whether the abnormal nozzle exists in the spray head before formal printing.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of shuttle scan printing as 4pass scan printing in a related art inkjet printer.
Fig. 2 is a flowchart of a head nozzle detection method according to a first embodiment of the present invention.
Fig. 3 is a flowchart of a head nozzle detecting method according to a second embodiment of the present invention.
Fig. 4 is a flowchart of a head nozzle detecting method according to a third embodiment of the present invention.
Fig. 5 is a schematic diagram of a lidar detection method for detecting a nozzle of a nozzle according to an embodiment of the present invention.
Fig. 6 is a schematic diagram of laser radar signal transmission and reception in the method for detecting a nozzle of a head according to an embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a head nozzle detection device according to an embodiment of the present invention.
Fig. 8 is a block diagram showing the structure of an ink jet printer according to an embodiment of the present invention.
Fig. 9 is a schematic structural diagram of a head nozzle detection apparatus according to an embodiment of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Referring to fig. 2 to 6, an embodiment of the present invention provides a method for detecting nozzles of a nozzle, which detects whether there is an abnormal nozzle in the nozzle before formal printing, so as to avoid an influence of the abnormal nozzle on a printed product during formal printing. The method for detecting the nozzle of the spray head comprises the following steps:
and S1, acquiring detection time for detecting all nozzles, and acquiring the ink jet starting time and the ink jet stopping time for simultaneously jetting ink by all nozzles according to the detection time when the nozzles of the nozzle are started and detected. Wherein the ink-jet starting time and the ink-jet stopping time can be obtained by calculation or can be obtained by arranging in time sequence.
S2, sending detection signals to pass through the preset jetting tracks of all the nozzles simultaneously according to the ink jetting starting time and the ink jetting stopping time of all the nozzles, wherein the preset jetting tracks are the motion tracks of ink drops jetted by the nozzles when the nozzles are normal; each nozzle presents a predetermined ejection trajectory when normally printing ink, and ejected ink droplets are visualized on a print medium as forming part of a printed image.
S3, controlling all nozzles to jet ink simultaneously and obtaining feedback signals of the detection signals after the detection signals pass through the preset jetting tracks of all the nozzles;
and S4, determining whether each nozzle of the spray head is abnormal or not according to the feedback signal.
Preferably, referring to fig. 3, in this embodiment, before the step S1, the method further includes:
and S0, acquiring the information of the appointed position for detecting the spray head, and controlling the spray head and the sensor for sending the detection signal to move to the appointed position.
In this embodiment, the designated position is preferably a starting printing position of the nozzle, and the starting printing position is a position of the nozzle after the inkjet control system is reset. Whether the nozzle of the spray head is abnormal or not is detected at the initial printing position of the spray head, so that the moving distance between the spray head and the sensor can be reduced, the detection process is simplified, the detection time is saved, and meanwhile, the pollution to a printing platform in the detection process is avoided.
Preferably, referring to fig. 4, in a preferred embodiment, the step S3 specifically includes:
s31, controlling all nozzles on the spray head to flash simultaneously to obtain a detection starting signal;
and S32, controlling all nozzles to jet ink simultaneously according to the detection starting signal and obtaining a feedback signal after the detection signal passes through the preset jetting tracks of all nozzles.
Specifically, the movement of the spray head is monitored, when the spray head moves to the detection position, all nozzles of the spray head are controlled to flash to obtain a starting signal, all nozzles on the spray head are controlled according to the starting signal to enable all nozzles to jet ink within the first detection time, all nozzles are controlled to flash to dredge part of normal nozzles before formal detection is carried out, and therefore the situation that the obtained feedback signal is inaccurate due to the fact that ink is not smoothly discharged from part of normal nozzles in the detection process is avoided.
And after the flash spraying is finished, receiving the starting signal, controlling all nozzles on the sprayer to start ink jetting according to the starting signal and obtaining a feedback signal of the detection signal after passing through the preset jetting track of all the nozzles.
Preferably, the sensor is a lidar sensor. The laser radar sensor comprises a transmitting system, a receiving system and an information processing system. The emission system is used for emitting laser beams capable of covering preset injection tracks of all nozzles, and consists of various types of lasers, such as a carbon dioxide laser, a neodymium-doped yttrium aluminum garnet laser, a semiconductor laser, a wavelength-tunable solid laser, an optical beam expanding unit and the like; the receiving system is used for receiving the laser beam reflected by the ink drop and consists of a telescope and various types of photodetectors, such as a photomultiplier tube, a semiconductor photodiode, an avalanche photodiode, an infrared and visible light multi-element detection device and the like.
Preferably, the detection time is greater than or equal to a total time of 10 laser radar scans.
Preferably, the feedback signal includes nozzle orientation information and nozzle ink ejection information.
Referring to fig. 5, in the embodiment, a laser radar sensor is taken as an example to specifically describe a principle of detecting whether the nozzles 211 of the nozzle 210 are abnormal, a designated position is determined first, the controller 100 controls the nozzle 210 and the sensor to move according to the designated position, and when the controller 100 monitors that the nozzle 210 and the laser radar sensor 310 reach the designated position, the controller 100 starts a transmitting system of the laser radar sensor 310 to transmit a laser beam 311 capable of covering all the nozzles 211. In this embodiment, the lidar sensor 310 is located on a perpendicular bisector of the array of nozzles 211 of the head 210, so as to define a mapping relationship between a fan-shaped laser beam emitted by the emitting system of the lidar sensor 310 and an angle of the nozzles 211 on the head 210, and the fan-shaped laser beam may cover all the nozzles 211 on the head 210. And then acquiring a first detection time, controlling all nozzles 211 on the spray head 210 to start spraying ink according to the first detection time, when the first detection time is up, the controller 100 controls all nozzles 211 on the spray head 210 to stop spraying ink, wherein the first detection time is greater than or equal to the total scanning time of the laser radar sensor 310 for 10 times, so that the error of feedback signals of part of the nozzles 211 caused by short scanning time is avoided, and meanwhile, a receiving system of the laser radar sensor 310 obtains the first feedback signals of all the nozzles 211 in the first detection time.
The movement of the spray head 210 is monitored, when the spray head 210 moves to the detection position, all the nozzles 211 of the spray head 210 are controlled to flash to obtain a starting signal, the controller 100 controls all the nozzles 211 on the spray head 210 to jet ink in the first detection time according to the starting signal, and all the nozzles 211 are controlled to flash to dredge part of the normal nozzles 211 before formal detection, so that the first feedback signal which is obtained due to the fact that ink is not discharged smoothly from part of the normal nozzles 211 in the detection process is inaccurate is avoided.
After the flashing, controller 100 receives and detects the enabling signal, begins to spout ink according to all nozzles 211 on the enabling signal control shower nozzle 210, shower nozzle 210 is at the inkjet in-process the continuous transmission laser beam 311 of transmitting system of lidar sensor 310 scans the inkjet condition of all nozzles 211, works as first detection time arrives, and all nozzles 211 on controller 100 control shower nozzle 210 stop the first feedback signal that the inkjet obtained all nozzles 211 simultaneously, the lasting inkjet time more than or equal to of shower nozzle 210 the total time of 10 scans of lidar sensor 310 has avoided scanning error.
And determining abnormal nozzles 211 information in the spray head 210 according to the first feedback signal, wherein the first feedback signal comprises nozzle 211 orientation information and nozzle 211 ink jetting information. When there is an ink droplet 212 in one of the scanning directions of the laser beam 311 emitted by the emitting system of the laser radar sensor 310, the receiving system of the laser radar sensor 310 receives the laser reflected by the ink droplet 212 and generates a light signal, which is denoted as α, and when there is no ink droplet 212, the receiving system of the laser radar sensor 310 generates a blank signal, which is denoted as β, and the blank signal indicates that the receiving system does not receive the reflected light of the ink droplet 212. According to the established mapping relation of the orientation information of the nozzles 211, the angle information of the nozzles 211 and the ink jetting information of the nozzles 211, the positions of the abnormal nozzles 211 in the spray head 210 are positioned according to the mapping relation through blank signals beta. The mapping relation is established by the following method: in the range of the azimuth angle in which the existence of the target is detected, the azimuth angle interval is taken as the width 2 theta of the main lobe of the radar antennakAs two beams required for single pulse technology goniometry, any two echo pulses (laser beams reflected back through the ink drop 212); centering on echo pulses in two directions, such as OA and OB in FIG. 6, and performing coherent accumulation on P pulses adjacent to each echo pulse, and defining the direction value of one echo pulse as θiThe other echo pulse has a direction value of thetai+2θkThen, the azimuth value is obtained as thetaiEcho intensity F (theta) of two-dimensional image of detected targeti) And the sum azimuth value is thetai+2θkEcho intensity F (theta) of two-dimensional image of detected targeti+2θk) And P is a natural number, and the sum signal intensity of the two azimuthal targets is calculated according to the acquired two-dimensional image echo intensities of the two azimuthal targets:
FΣ(θ)＝F(θi)+F(θi+2θk)
the difference signal intensity:
FΔ＝F(θi)-F(θi+2θk)
sum-difference ratio:
searching error deflection angle corresponding to the sum-difference ratio k by using a table look-up methodθObtaining the target azimuth angle thetaT＝θi+2θk+θ. Two identical beams are used, partially overlapping each other, with equal signal axes OA in FIG. 6, corresponding to an azimuth θ0OB and OC are the antenna axes of the two beams, respectively, and the included angles between them and the OA signal axes are both thetak. The azimuth angle corresponding to the target is thetatThe transmitting signal and the echo signal are subjected to two-wave return modulation at the same time, and when the target appears in the OA direction, the echo signal intensity is equal; when the target deviates from the OA direction, an error deviation angle is generated, and the azimuth of the target is obtained according to the azimuth of the OA.
And acquiring second detection time, detecting the ink jetting condition of the nozzles 211 on the spray head 210 again, positioning the position information of the abnormal nozzles 211 in the spray head 210 by combining the first feedback signal and the second feedback signal, avoiding the accident of one-time detection through two times of detection, and improving the accuracy of the detection result.
Referring to fig. 7, an embodiment of the present invention provides a device for detecting a nozzle of a nozzle, including:
the detection time acquisition module 10 is configured to acquire detection time for detecting all nozzles, and when the nozzles of the nozzle are started to be detected, the start ink jetting time and the stop ink jetting time for jetting ink by all nozzles at the same time are obtained according to the detection time;
a detection signal sending module 20, configured to send a detection signal while passing through a predetermined ejection trajectory of all the nozzles according to the ink ejection start time and the ink ejection stop time of all the nozzles, where the predetermined ejection trajectory is a motion trajectory of an ink droplet ejected when a nozzle is normal;
a feedback signal obtaining module 30, configured to control all nozzles to jet ink simultaneously and obtain a feedback signal after the detection signal passes through the predetermined jetting tracks of all nozzles;
and the nozzle state judging module 40 is used for determining whether each nozzle of the sprayer is abnormal or not according to the feedback signal.
Preferably, the designated position includes a starting printing position of the nozzle, and the starting printing position is a position of the nozzle after the inkjet control system is reset.
Preferably, the controlling all the nozzles to eject ink simultaneously and obtaining the feedback signal after the detection signal passes through the predetermined ejection tracks of all the nozzles includes:
controlling all nozzles on the spray head to flash at the same time to obtain a detection starting signal;
and controlling all nozzles to jet ink simultaneously according to the detection starting signal and obtaining a feedback signal of the detection signal after the detection signal passes through the preset jetting tracks of all the nozzles.
Preferably, the sensor is a lidar sensor.
Preferably, the feedback signal includes nozzle orientation information and nozzle ink ejection information.
Referring to fig. 8, an inkjet printer according to an embodiment of the present invention includes nozzles, each of the nozzles includes at least one nozzle, and the inkjet printer further includes: a controller 100, a head unit 200, and a detection unit 300; the controller 100 controls the nozzles 211 of the heads 210 in the head unit 200 to eject ink, and the detection unit 300 detects that the nozzles 211 of the heads 210 in the head unit 200 eject ink and sends the detection result to the controller 100; in this embodiment, the head unit 200 includes a plurality of heads 210, the abnormal nozzles 211 of each head 210 are detected by the same method, and the detecting unit 300 is the head nozzle detecting apparatus shown in fig. 6.
In addition, the method for detecting the nozzle of the nozzle head according to the embodiment of the present invention described with reference to fig. 1 may be implemented by a nozzle head detecting apparatus. Fig. 9 is a schematic diagram illustrating a hardware structure of a head nozzle detection apparatus according to an embodiment of the present invention.
The spray head nozzle detection apparatus may include a processor 401 and a memory 402 storing computer program instructions.
Specifically, the processor 401 may include a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or may be configured as one or more Integrated circuits implementing embodiments of the present invention.
The processor 401 reads and executes computer program instructions stored in the memory 402 to implement any of the method for detecting a nozzle of a spray head in the above-described embodiments.
In one example, the spray head nozzle detection device may also include a communication interface 403 and a bus 410. As shown in fig. 9, the processor 401, the memory 402, and the communication interface 403 are connected via a bus 410 to complete communication therebetween.
The communication interface 403 is mainly used for implementing communication between modules, apparatuses, units and/or devices in the embodiments of the present invention.
In addition, in combination with the method for detecting a nozzle of a nozzle in the foregoing embodiments, embodiments of the present invention may be implemented by providing a computer-readable storage medium. The computer readable storage medium having stored thereon computer program instructions; the computer program instructions, when executed by a processor, implement any of the spray head nozzle detection methods of the above embodiments.
In summary, according to the method, the device, the apparatus, the inkjet printer, and the storage medium for detecting nozzles of a nozzle provided in the embodiments of the present invention, by acquiring detection time for detecting all nozzles, when the nozzles of the nozzle are started to be detected, a start inkjet time and a stop inkjet time for simultaneously ejecting ink from all nozzles are obtained according to the detection time, and a detection signal is sent and is controlled to simultaneously eject ink from all nozzles, so as to obtain a feedback signal after the detection signal passes through the predetermined ejection tracks of all nozzles; and finally, determining abnormal nozzle information of the spray head according to the feedback signal. The method avoids the influence of the abnormal nozzle on the printed product during formal printing by detecting whether the abnormal nozzle exists in the spray head before formal printing.
It is to be understood that the invention is not limited to the specific arrangements and instrumentality described above and shown in the drawings. A detailed description of known methods is omitted herein for the sake of brevity. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present invention are not limited to the specific steps described and illustrated, and those skilled in the art can make various changes, modifications and additions or change the order between the steps after comprehending the spirit of the present invention.
The functional blocks shown in the above-described structural block diagrams may be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, plug-in, function card, or the like. When implemented in software, the elements of the invention are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine-readable medium or transmitted by a data signal carried in a carrier wave over a transmission medium or a communication link. A "machine-readable medium" may include any medium that can store or transfer information. Examples of a machine-readable medium include electronic circuits, semiconductor memory devices, ROM, flash memory, Erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, Radio Frequency (RF) links, and so forth. The code segments may be downloaded via computer networks such as the internet, intranet, etc.
It should also be noted that the exemplary embodiments mentioned in this patent describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.
As described above, only the specific embodiments of the present invention are provided, and it can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the module and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention.
Claims (9)
1. A method for detecting a nozzle of a spray head is characterized by comprising the following steps:
acquiring detection time for detecting all nozzles, and when the nozzles of the spray head are started to be detected, acquiring ink jet starting time and ink jet stopping time for simultaneously jetting ink by all the nozzles according to the detection time;
sending a detection signal to pass through the preset jetting tracks of all the nozzles simultaneously according to the ink jetting starting time and the ink jetting stopping time of all the nozzles, wherein the preset jetting tracks are the motion tracks of ink drops jetted by the nozzles when the nozzles are normal;
controlling all nozzles to jet ink simultaneously and obtaining feedback signals of the detection signals after the detection signals pass through the preset jetting tracks of all the nozzles;
determining whether each nozzle of the sprayer is abnormal or not according to the feedback signal;
wherein controlling all the nozzles to jet ink simultaneously and obtaining the feedback signal after the detection signal passes through the predetermined jetting tracks of all the nozzles comprises:
monitoring the movement of the spray head, and controlling all nozzles on the spray head to flash at the same time when the spray head moves to a detection position to obtain a detection starting signal;
controlling all nozzles to jet ink simultaneously according to the detection starting signal and obtaining a feedback signal of the detection signal after the detection signal passes through the preset jetting tracks of all the nozzles;
the feedback signal is: and a blank signal obtained according to the detection signal and a reflection signal reflected by the ink ejected from the nozzle.
2. The method for detecting nozzles of a nozzle assembly according to claim 1, wherein the method further comprises, before the acquiring a detection time for detecting all nozzles, and when the nozzles of the nozzle assembly are detected in an activated state, acquiring a start ink ejection timing and a stop ink ejection timing for ejecting ink from all nozzles simultaneously according to the detection time:
and acquiring the designated position information for detecting the spray head, and controlling the spray head and the sensor for sending the detection signal to move to the designated position.
3. The head nozzle detection method according to claim 2, wherein the specified position includes a start printing position of the head, and the start printing position is a position where the head is located after the ink jet control system is reset.
4. The method of claim 2, wherein the sensor is a lidar sensor.
5. The method of claim 4, wherein the feedback signal includes nozzle orientation information and nozzle firing information.
6. A spray head nozzle detection apparatus, the apparatus comprising:
the detection time acquisition module is used for acquiring the detection time for detecting all the nozzles, and when the nozzles of the spray head are started to be detected, the ink jet starting time and the ink jet stopping time for simultaneously jetting ink by all the nozzles are obtained according to the detection time;
the detection signal sending module is used for sending detection signals to pass through preset jetting tracks of all the nozzles simultaneously according to the ink jetting starting time and the ink jetting stopping time of all the nozzles, and the preset jetting tracks are motion tracks of ink drops jetted by the nozzles when the nozzles are normal;
the feedback signal acquisition module is used for controlling all the nozzles to jet ink simultaneously and obtaining feedback signals of the detection signals after the detection signals pass through the preset jetting tracks of all the nozzles;
a nozzle state judging module, configured to determine whether each nozzle of the nozzle is abnormal according to the feedback signal, where the feedback signal acquiring module includes:
monitoring the movement of the spray head, and controlling all nozzles on the spray head to flash at the same time when the spray head moves to a detection position to obtain a detection starting signal;
controlling all nozzles to jet ink simultaneously according to the detection starting signal and obtaining a feedback signal of the detection signal after the detection signal passes through the preset jetting tracks of all the nozzles;
the feedback signal is: and a blank signal obtained according to the detection signal and a reflection signal reflected by the ink ejected from the nozzle.
7. A head nozzle detection apparatus, comprising: at least one processor, at least one memory, and computer program instructions stored in the memory that, when executed by the processor, implement the method of any of claims 1-5.
8. A medium having stored thereon computer program instructions, which, when executed by a processor, implement the method according to any one of claims 1-5.
9. An ink jet printer comprising jets each comprising at least one jet, wherein the ink jet printer further comprises jet nozzle detection apparatus according to claim 7.
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| CN111332020B (en) * | 2020-03-23 | 2021-01-05 | 华中科技大学 | Multi-error compensation positioning control method and system for jet printing ink drops |
| CN114789604B (en) * | 2021-01-25 | 2024-02-09 | 深圳汉弘软件技术有限公司 | Printing method, device, inkjet printer and storage medium |
| CN113211997B (en) * | 2021-04-21 | 2022-04-08 | 四川天邑康和通信股份有限公司 | Intelligent jet printing production process control method for double parallel butterfly-shaped lead-in optical cable |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000052542A (en) * | 1998-08-06 | 2000-02-22 | Canon Inc | Image-recording apparatus and facsimile apparatus using the apparatus and method for inspecting ink discharge |
| WO2000029219A1 (en) * | 1998-11-12 | 2000-05-25 | Seiko Epson Corporation | Detection of non-operatable nozzle while relatively moving print head and inspecting unit |
| JP2000326524A (en) * | 1999-05-18 | 2000-11-28 | Rohm Co Ltd | Ejected ink detector |
| JP2002210983A (en) * | 2001-01-16 | 2002-07-31 | Seiko Epson Corp | Inspection of abnormal ejection of ink drop |
| JP2003165204A (en) * | 2001-11-30 | 2003-06-10 | Konica Corp | Passage detector of micro liquid drop and ink jet recorder |
| CN1590094A (en) * | 2003-08-27 | 2005-03-09 | 精工爱普生株式会社 | Drop identifying method,drop spray head checking device and drop sprayer |
| JP2005069738A (en) * | 2003-08-20 | 2005-03-17 | Seiko Epson Corp | Droplet observation method and droplet observation device |
| JP2007296670A (en) * | 2006-04-28 | 2007-11-15 | Canon Inc | Droplet ejection apparatus, droplet ejection system, droplet ejection detecting method, and droplet ejection detecting program |
| US9114606B1 (en) * | 2014-04-07 | 2015-08-25 | Palo Alto Research Center Incorporated | Spatial light modulation method for determining droplet motion characteristics |
| CN104936789A (en) * | 2013-01-23 | 2015-09-23 | 惠普发展公司，有限责任合伙企业 | Testing printhead |
| WO2017102016A1 (en) * | 2015-12-17 | 2017-06-22 | Hewlett-Packard Development Company, L.P. | Droplet detection |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7370933B2 (en) * | 2005-01-14 | 2008-05-13 | Fuji Photo Film Co., Ltd. | Liquid ejection apparatus, image forming apparatus and ejection determination method |
-
2018
- 2018-02-28 CN CN201810168361.5A patent/CN110202937B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000052542A (en) * | 1998-08-06 | 2000-02-22 | Canon Inc | Image-recording apparatus and facsimile apparatus using the apparatus and method for inspecting ink discharge |
| WO2000029219A1 (en) * | 1998-11-12 | 2000-05-25 | Seiko Epson Corporation | Detection of non-operatable nozzle while relatively moving print head and inspecting unit |
| JP2000326524A (en) * | 1999-05-18 | 2000-11-28 | Rohm Co Ltd | Ejected ink detector |
| JP2002210983A (en) * | 2001-01-16 | 2002-07-31 | Seiko Epson Corp | Inspection of abnormal ejection of ink drop |
| JP2003165204A (en) * | 2001-11-30 | 2003-06-10 | Konica Corp | Passage detector of micro liquid drop and ink jet recorder |
| JP2005069738A (en) * | 2003-08-20 | 2005-03-17 | Seiko Epson Corp | Droplet observation method and droplet observation device |
| CN1590094A (en) * | 2003-08-27 | 2005-03-09 | 精工爱普生株式会社 | Drop identifying method,drop spray head checking device and drop sprayer |
| JP2007296670A (en) * | 2006-04-28 | 2007-11-15 | Canon Inc | Droplet ejection apparatus, droplet ejection system, droplet ejection detecting method, and droplet ejection detecting program |
| CN104936789A (en) * | 2013-01-23 | 2015-09-23 | 惠普发展公司，有限责任合伙企业 | Testing printhead |
| US9114606B1 (en) * | 2014-04-07 | 2015-08-25 | Palo Alto Research Center Incorporated | Spatial light modulation method for determining droplet motion characteristics |
| WO2017102016A1 (en) * | 2015-12-17 | 2017-06-22 | Hewlett-Packard Development Company, L.P. | Droplet detection |
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