JP2003170606A - Inkjet head and inkjet printer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To smoothly peel a protection sheet peelably adhered to a nozzle face of a print head without damaging the nozzle face. <P>SOLUTION: This inkjet printer is equipped with a head cap 16 which relatively moves with respect to the print head 14 having the nozzle face 17 with an ink ejection nozzle for ejecting ink supplied from an ink cartridge 13, and is detachably attached to the print head 14 to protect the nozzle face 17. In the head cap 16, the protection sheet 15 peelably adhered to the nozzle face 17 is extended from the end at the innermost side toward the front side by being folded, and a drawing end section 20 is projected for peeling and drawing the protection sheet 15 from a sheet drawing hole 18 formed at one side section of the head cap 16. By pulling the drawing end section 20, it is possible to smoothly peel to protection sheet 15 without damaging the nozzle face 17. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink jet head and an ink jet printer by an ink jet method, and more specifically, a protective sheet releasably attached to a nozzle surface of a print head can be smoothly removed without damaging the nozzle surface. The present invention relates to an inkjet head and an inkjet printer to be peeled off.

[0002]

2. Description of the Related Art In a conventional ink jet head, as shown in FIG. 9A, a protective sheet 3 for covering a nozzle surface 2 of a print head provided on a bottom surface of an ink cartridge 1 is detachably attached. Was there. When the inkjet head is mounted on an inkjet printer for use, the protective sheet 3 is peeled off to expose the nozzle surface 2, and the inkjet head is mounted on a predetermined portion of the inkjet printer (not shown).

At this time, there is no particular method for peeling off the protective sheet 3, and the user peels off the nozzle surface 2 by each method to expose it.
For example, by pinching the end portion 4 of the protective sheet 3 shown in FIG. 9 (a) with a finger, as shown in FIG. 9 (b) or (c), in a direction away from the nozzle surface 2 as shown by an arrow A or B. The protective sheet 3 was pulled and peeled.

[0004]

However, in such a conventional ink jet head, the pulling direction when the protective sheet 3 is peeled off is not limited to a specific direction, so that the arrow A shown in FIG. Alternatively, when the protective sheet 3 is pulled in a direction away from the nozzle surface 2 as in B, the adhesive force of the protective sheet 3 exerts a force to lift the nozzle surface 2 in the vertical direction, which may damage the nozzle surface 2. It was Moreover, when excessive force is applied, the nozzle surface 2 may be destroyed. Furthermore, the protection sheet 3
After peeling off, the ink adhered from the nozzle surface 2 to the adhesive surface of the protective sheet 3 may adhere to the user's finger, clothes, etc. and stain them.

Therefore, the present invention addresses such a problem, and an ink jet head which is intended to smoothly peel a protective sheet releasably attached to a nozzle surface of a print head without damaging the nozzle surface. And an inkjet printer.

[0006]

In order to achieve the above object, an ink jet head according to the present invention comprises a nozzle surface of the print head which is movable relative to the print head and is detachably mounted. , The protective sheet attached to the nozzle surface in the head cap is folded back from the end on the back side toward the front side to extend, and from the sheet outlet formed on one side of the head cap. The above-mentioned protective sheet has a pull-out end portion for peeling and pulling out.

With such a structure, the protective sheet attached to the nozzle surface is moved toward the front side from the back end in the head cap that is moved relative to the print head and is detachably mounted. The protective sheet is peeled off from the nozzle surface and pulled out by pulling out the withdrawing end portion that is folded back and extended and is extended from the sheet withdrawing port formed on one side portion of the head cap. As a result, when the protective sheet is peeled off, the pulling direction is limited to a direction substantially parallel to the nozzle surface within the head cap, and a vertical force is not applied to the nozzle surface.

Further, the sheet outlet of the head cap may be provided with a closing means for closing the sheet outlet after the protective sheet is peeled from the nozzle surface and pulled out to the outside. With this, the blocking means can close the sheet outlet after the protective sheet separated from the nozzle surface is pulled out to the outside of the head cap, and block the air flow inside and outside the head cap.

Further, in the head cap, there is mounted a counter sheet which is arranged symmetrically with the protective sheet and which is folded back from the end portion on the back side toward the front side and extended, and the protective sheet is provided from the sheet outlet. The facing ends of the facing sheets may be aligned with each other and their drawing-out end portions may be projected. With this, by pulling the withdrawing end portion of the protective sheet and the opposing sheet that are extended from the sheet outlet, the opposing sheet is attached to the protective sheet that is peeled from the nozzle surface to be integrated, and the adhesive surface of the protective sheet is Do not expose.

Furthermore, the surface of the facing sheet facing the protective sheet may be a surface coated with an adhesive. Thus, by pulling the withdrawing end portion extended from the sheet withdrawing port by aligning the mutually facing surfaces of the protective sheet and the counter sheet, the protective sheet is peeled from the nozzle surface and the counter sheet is provided on the protective sheet. It is firmly and firmly bonded to form a unit, and the adhesive surface of the protective sheet is not exposed.

Further, the sheet outlet of the head cap may be provided with a closing means for closing the sheet outlet after the protective sheet is peeled from the nozzle surface and pulled out together with the counter sheet. Thus, the closing means closes the sheet outlet after the protective sheet and the counter sheet separated from the nozzle surface are combined and pulled out to the outside of the head cap, and the air flow inside and outside the head cap can be blocked. .

Further, the ink jet printer according to the present invention has an ink cartridge for containing ink of one color or a plurality of colors inside, and a nozzle surface provided with an ink ejection hole for ejecting ink supplied from the ink cartridge. A print head, a protective sheet releasably attached to the nozzle surface of the print head and covering the nozzle surface, and a print sheet that moves relative to the print head and is detachably attached to protect the nozzle surface of the print head. And a protective sheet attached to the nozzle surface in the head cap, is folded back from the end on the back side toward the front side and extended, and is formed on one side of the head cap. Ink jet formed by sticking out a drawer end for peeling and pulling out the above-mentioned protective sheet from the formed sheet drawing outlet. A head; a head attaching / detaching mechanism that mounts and fixes the inkjet head on a predetermined location of the printer body and releases the fixation; and a head cap on the print head with the inkjet head fixed on the predetermined location of the printer body And a head cap opening / closing mechanism that relatively moves with respect to the nozzle surface to release the nozzle surface and closes the head cap after printing is completed.

With such a structure, the ink jet head is mounted and fixed at a predetermined position of the printer body by the head attaching / detaching mechanism, and the fixing is released, and the ink jet head is fixed at a predetermined position of the printer body by the head cap opening / closing mechanism. In this state, the head cap is moved relative to the print head to release the nozzle surface, and after printing is completed, the head cap is closed, and the ink cartridge, print head, protective sheet, and protective sheet are peeled off and pulled out. The ink is atomized into fine particles and ejected by an inkjet head equipped with a head cap having a sheet outlet, and ink dots are sprayed onto a recording paper to print.

In the head cap of the ink jet head, there is mounted an opposing sheet which is disposed symmetrically with the protective sheet and which is folded back from the end portion on the back side toward the front side and extended. It is also possible that the protective sheet and the facing sheet are made to face each other so that their drawn-out end portions are projected. With this, by pulling the withdrawing end portion of the protective sheet and the opposing sheet that are extended from the sheet outlet, the opposing sheet is attached to the protective sheet that is peeled from the nozzle surface to be integrated, and the adhesive surface of the protective sheet is Avoid exposure.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a perspective view showing an embodiment of an inkjet head 11 and a printer body 12 to which the inkjet head 11 is attached according to the present invention. FIG. 1 shows a type in which the inkjet head 11 has an independent form and is directly attached to the printer body 12. Then, the inkjet head 11 is housed as shown by an arrow H and set in the printer body 12 in a fixed state to form an inkjet printer.

The ink jet head 11 is for making liquid ink into fine particles by, for example, an electrothermal conversion method or an electromechanical conversion method, and ejecting the ink to spray ink dots on a recording paper, as shown in FIGS. 1 and 2. Ink cartridge 13, print head 14, and protective sheet 15
And a head cap 16.

The ink cartridge 13 has an internal 1
A color or a plurality of colors of ink are accommodated, and its housing is elongated over the entire width in the width direction of the printer body 12 shown in FIG. 1, that is, the width direction of the recording paper. Although not shown in the drawing, there are, for example, four ink chambers inside the housing, and inks of four colors of yellow Y, magenta M, cyan C, and black K are filled therein. The ink cartridge 13 is made of hard resin or the like.

As shown in FIG. 2 (enlarged cross-sectional view of the ink jet head 11 shown in FIG. 1), a print head 14 is provided on the bottom surface of the ink cartridge 13. The print head 14 finely atomizes the ink supplied from the ink cartridge 13 and ejects the ink. The ink ejection holes having minute holes correspond to the entire width of the recording paper along the longitudinal direction of the ink cartridge 13. It has a nozzle surface 17 provided in the same manner. And
The nozzle surface 17 extends in the longitudinal direction of the ink cartridge 13 and is provided in correspondence with four color inks of yellow Y, magenta M, cyan C, and black K, respectively. Although not shown, there are a portion of the nozzle surface 17 having ink ejection holes of Y, M, C, and K, and a convex portion in which the head electrode is covered with resin on both sides of the ink ejection hole. The formed portion has a corrugated surface shape.

A protective sheet 15 is attached to the nozzle surface 17 of the print head 14. The protective sheet 15 includes the inkjet head 11 and the printer body 12
Before it is attached to the nozzle surface 17, the nozzle surface 17 is covered and protected so as not to be dusted or scratched.
It is composed of an adhesive tape which is detachably attached to the entire nozzle surface 17 of each color of M, C and K. When the inkjet head 11 is mounted on the printer body 12, the end portion of the protective sheet 15 is pulled to be peeled from the nozzle surface 17.

A head cap 16 is attached to the bottom side of the ink cartridge 13. The head cap 16 covers the nozzle surface 17 of the print head 14 and protects it in order to prevent the ink ejection holes from drying and clogging. The head cap 16 extends in the same length as the housing of the ink cartridge 13 and has an upper surface. It is formed in a shallow box shape having an opening, and is mounted so as to be movable relative to the print head 14 and detachable. The head cap 16 is provided on the nozzle surface 1 of the print head 14.
7 is moved in the direction orthogonal to the longitudinal direction of 7 as indicated by arrows C and D, removed from the ink cartridge 13 in the state of moving in the direction of arrow C, and mounted in the ink cartridge 13 again in the state of returning in the direction of arrow D. It has become so.
The head cap 16 is made of hard resin or the like.

Here, in the present invention, the protective sheet 15 is attached inside the head cap 16 as follows. That is, as shown in FIG. 2, Y, M,
The protective sheet 15 that is releasably attached to the entire nozzle surface 17 of each of the colors C and K has a rear end (for example, the K side) as viewed from a sheet outlet 18 described below and extends substantially toward the front side. 18
It is folded back at 0 degrees and extended, and the extended portion is further extended toward the sheet outlet 18 so as to be along the inner bottom surface 19 of the head cap 16. It projects from the exit 18.

A sheet outlet 18 is formed on one side of the head cap 16. The sheet pull-out port 18 causes the pull-out end portion 20 for peeling and pulling out the protective sheet 15 mounted inside the head cap 16 from the nozzle surface 17 as described above to the outside of the head cap 16. As shown in FIG. 4, the head cap 16 is formed in a narrow slit shape on one side portion in the longitudinal direction. As a result, by pulling out the pull-out end portion 20 extended from the sheet pull-out port 18 in the direction of arrow E in FIG.
5 can be separated from the nozzle surface 17 and pulled out.

Further, as shown in FIG. 2, a shutter 21 is provided at the sheet outlet 18 of the head cap 16. The shutter 21 is formed by removing the protective sheet 15 from the nozzle surface 17 and removing the head cap 16
Is a closing means for closing the sheet outlet 18 after being pulled out to the outside of the sheet, and for example, while passing through the sheet outlet 18, the protective sheet 15 is curved while allowing the passage thereof, but the sheet is protected. When the sheet 15 has finished passing and does not exist, it is composed of a member that is stretched in a straight line to cover the sheet, and has a slit-shaped sheet outlet 18 shown in FIG.
The outer surface of the is attached along the lengthwise direction by means of a saw. Thus, the shutter 21 can close the sheet outlet 18 after the protective sheet 15 peeled from the nozzle surface 17 is pulled out to the outside of the head cap 16 to shut off the air flow inside and outside the head cap. It should be noted that the shutter 21 may be attached to the inner side surface of the sheet pull-out opening 18 by a crocodile. Further, the structure may be any structure as long as the sheet outlet 18 can be closed.

Next, in the ink jet head 11 thus constructed, when the ink jet head 11 is mounted on the printer body 12 for use, the nozzle surface 1
A state in which the protective sheet 15 is peeled from the sheet 7 will be described. At this time, in FIG.
The withdrawing end portion 20 of the protective sheet 15 is projected from the sheet withdrawing port 18 of the head cap 16 attached to the bottom surface side.

In this state, the user holds the ink cartridge 13 with one hand, and with the other hand, the pull-out end portion 2 of the protective sheet 15 extended from the sheet pull-out port 18.
Pinch 0 and pull out in the direction of arrow E as shown in FIG. Then, the protective sheet 15 is attached to the nozzle surface 17 shown in FIG.
Side), and as shown in FIG. 3, for example, C, M, Y
It is peeled off toward the front side one after another. And
When the foremost end portion of the protective sheet 15 (for example, the front side from the Y side) is peeled off, the protective sheet 15 is completely peeled off from the nozzle surface 17, and the sheet pull-out port 18 extends to the outside of the head cap 16. Be withdrawn.

At this time, the protective sheet 15 attached to the nozzle surface 17 is peeled off in the direction substantially parallel to the nozzle surface 17 in the head cap 16 by pulling out in the direction of the arrow E. The protective sheet 15 can be peeled off without applying a lifting force to the vertical direction 17. Therefore, the nozzle surface 17 is not damaged. And in this state, in FIG.
The shutter 21 expands linearly to close the sheet outlet 18, and shuts off the air flow inside and outside the head cap 16.

Thereafter, the protective sheet 15 is attached to the nozzle surface 1.
The inkjet head 11 peeled from 7 may be mounted on the printer body 12 for use. In the above description, as shown in FIG. 4, the sheet outlet 18 is provided on one side of the head cap 16 in the longitudinal direction, and the protective sheet 1 is provided.
5 is drawn out in the direction of arrow E, the present invention is not limited to this.
6 is provided at one side end portion in the short axis direction of FIG.
It may be pulled out in the direction indicated by the dashed arrow F.

FIG. 5 shows the ink jet head 1 of the present invention.
It is an expanded transverse cross-sectional view showing another embodiment of 1. In this embodiment, in the head cap 16, a facing sheet 22 that is arranged symmetrically with the protective sheet 15 shown in FIG. 2 and that is folded back from the end portion on the back side toward the front side and extended is attached, and the sheet outlet 18 to the above-mentioned protective sheet 15 and counter sheet 2
2 of their drawing ends 2 with their facing surfaces facing each other
It is an extension of 0 and 23. In this case, the surface of the facing sheet 22 facing the protective sheet 15 may be a surface coated with an adhesive (hereinafter, referred to as “adhesive surface”).

That is, in FIG. 5, in the head cap 16, the protective sheet 15 is attached to the nozzle surface 17 and folded back from the end portion on the back side toward the front side and extended as shown in FIG. The facing sheet 22 is peelably attached along the inner bottom surface 19 of the head cap 16 and is folded back from the back end in a symmetrical state toward the front side of the protective sheet 15. It has been extended. In this state, the protective sheets 15 arranged in the above symmetrical state
The surfaces of the sheet 22 and the facing sheet 22 facing each other are adhesive surfaces, and they are attached to each other to be integrated. Then, the extended drawing-out end portions 20 and 23 of the protective sheet 15 and the counter sheet 22 are projected from the sheet drawing-out port 18. The sheet outlet 18 is provided with a shutter 21 that closes the sheet outlet 18 after the protective sheet 15 is peeled from the nozzle surface 17 and is pulled out together with the counter sheet 22.

Next, a state in which the protective sheet 15 is peeled from the nozzle surface 17 in the embodiment shown in FIG. 5 will be described. At this time, the pull-out end portion 2 of the protective sheet 15 and the counter sheet 22 is pulled out from the sheet pull-out port 18 of the head cap 16 mounted on the bottom surface side of the ink cartridge 13.
0 and 23 are overhanging.

In this state, the user holds the ink cartridge 13 with one hand, and the protective sheet 15 and the opposing sheet 2 which are projected from the sheet outlet 18 with the other hand.
The two pull-out ends 20 and 23 are pinched together and pulled out in the direction of arrow E as shown in FIG. Then, the protective sheet 15 is peeled off from the end portion on the back side which is attached and folded back to the nozzle surface 17 shown in FIG. 5, and is sequentially peeled off toward the front side as shown in FIG. At the same time, the facing sheet 22 is peeled from the inner end portion of the head cap 16 shown in FIG. 5 which is attached to the inner bottom surface 19 and folded back, and is sequentially peeled toward the front side as shown in FIG. Go away. At this time, the protective sheet 15 and the counter sheet 22 are sequentially peeled toward the front side, and the adhesive surfaces facing each other are attached to each other.

When the frontmost end of the protective sheet 15 is peeled off, the protective sheet 15 is completely peeled off from the nozzle surface 17, and at the same time, the countersheet 22 is also peeled off at the frontmost end. Then, the sheet is pulled out of the head cap 16 through the sheet outlet 18. At this time, the protective sheet 15 and the counter sheet 22 are integrated by adhering their inner adhesive surfaces over their entire length. Therefore, even if the adhesive surface of the protective sheet 15 is covered with the counter sheet 22 and the ink of the nozzle surface 17 is adhered to the adhesive surface of the protective sheet 15, it is possible to prevent the ink from adhering to the user's finger or clothes.

Also in this embodiment, the protective sheet 15 can be peeled off without applying a force for vertically lifting the nozzle surface 17. Therefore, the nozzle surface 17 is not damaged. Further, in the state where the protective sheet 15 and the counter sheet 22 are pulled out to the outside, in FIG. 6, the shutter 21 linearly extends to close and close the sheet outlet 18. The surface of the facing sheet 22 facing the protective sheet 15 may not be coated with an adhesive. This is because, if the opposing surface of the protective sheet 15 is an adhesive surface, the opposing sheet 22 can be attached thereto.

Next, an ink jet printer as a related invention of the above ink jet head will be described with reference to FIGS. 1, 7, and 8. This ink jet printer is one in which ink is finely atomized and ejected from an ink jet head and ink dots are sprayed on a recording paper to print. As shown in FIG. 1, the ink jet head 11, the printer body 12, and the head are provided. Detachment mechanism 24
And a head cap opening / closing mechanism 25. The inkjet printer is of a type in which the inkjet head 11 is directly attached to the printer body 12.

The ink jet head 11 is for ejecting liquid ink into fine particles by, for example, an electrothermal conversion type or an electromechanical conversion type, and ejecting the ink dots on the recording paper. The configuration is the same as that described in.

The printer main body 12 is for mounting the ink jet head 11 at a predetermined position to exert the function as an ink jet printer, and includes a recording paper tray, a recording paper conveyance system, an operation drive system, and an overall control circuit. It has a department. Note that, in FIG. 1, reference numeral 26 indicates a paper discharge tray that is discharged after printing.

The head attachment / detachment mechanism 24 is for mounting and fixing the ink jet head 11 at a predetermined position of the printer body 12 and releasing the fixation, and is composed of, for example, a recess provided in the central portion of the printer body 12. It is composed of a horizontally long bar member configured to insert the inkjet head 11 into a predetermined position and press the upper surface thereof. That is, the printer main body 12 extends in the entire width direction and is tilted, for example, in the vertical direction and the horizontal direction.
Then, as shown in FIG. 1, the inkjet head 11 is housed and mounted in the direction of arrow H with the bar member standing upright in the vertical direction, and as shown in FIG. The head 11 is fixed to the above-mentioned predetermined location.

The head cap opening / closing mechanism 25 moves the head cap 16 relative to the print head 14 (see FIG. 2) while the ink jet head 11 is fixed at a predetermined position of the printer body 12, and the nozzle surface 17 is provided.
(See FIG. 2) and the head cap 16 is closed after printing is completed.
The rack 27 provided on the second side surface and the pinion 28 are engaged with each other. Incidentally, there is a pin-shaped projection on the inner side surface of the rack 27, and this is fitted into a recess formed on the corresponding outer surface of the head cap 16.

Then, as shown in FIG. 7, the ink jet head 11 is attached to the printer main body 12 by the head attaching / detaching mechanism 24.
By rotating the pinion 28 in a predetermined direction by a motor (not shown) in a state of being fixed to a predetermined position of the rack 27, the rack 27 moves in the direction of arrow G as shown in FIG. 16 is moved in the direction of arrow G to open it, and is stored in the retracted position.

The head cap opening / closing mechanism 25 is used.
Is not limited to the above-described engagement between the rack 27 and the pinion 28. For example, a rubber roller is pressed against both side surfaces of the head cap 16, a motor is coupled to the rotation shaft of this rubber roller, and the motor is rotated to rotate the rubber roller. The head cap 16 may be moved in the direction of arrow G and opened by friction.

Although the ink jet printer described with reference to FIGS. 1, 7 and 8 above is of a type in which the ink jet head 11 is directly attached to the printer body 12,
The present invention is not limited to this, and is similarly applicable to a type in which the inkjet head 11 is attached to the printer body 12 via a tray.

[0042]

Since the present invention is constructed as described above,
According to the inkjet head of the first aspect, the protective sheet that is attached to the nozzle surface in the head cap that is moved relative to the print head and is detachably attached is located from the end on the back side to the front side. The protective sheet can be peeled off from the nozzle surface and pulled out by pulling the pull-out end portion that is extended back toward and extends from the sheet pull-out opening formed at one side portion of the head cap. . Thereby, the direction in which the protective sheet is pulled when peeling off is limited to a direction substantially parallel to the nozzle surface in the head cap, and it is possible to prevent a vertical lifting force from being applied to the nozzle surface. Therefore, the protective sheet attached to the nozzle surface of the print head can be smoothly peeled off without damaging or destroying the nozzle surface.

According to the second aspect of the invention, the sheet outlet of the head cap is provided with a closing means for closing the sheet outlet after the protective sheet is peeled from the nozzle surface and pulled out to the outside. According to the closing means, after the protective sheet peeled from the nozzle surface is pulled out to the outside of the head cap, the sheet outlet is closed,
It is possible to block the flow of air inside and outside the head cap. Therefore, it is possible to prevent the nozzle surface from drying.

Further, according to the third aspect of the present invention, in the head cap, there is mounted the facing sheet which is arranged symmetrically with the protective sheet and which is folded back from the end portion on the back side and extended toward the front side. Then, by aligning the mutually facing surfaces of the protective sheet and the counter sheet from the sheet outlet, and projecting the withdrawing end portions thereof, the protective sheet and the withdrawing end of the opposing sheet extended from the sheet outlet. By pulling the part, the opposing sheet is attached to the protective sheet peeled from the nozzle surface to become one,
It is possible to prevent the adhesive surface of the protective sheet from being exposed. Therefore, even if the ink on the nozzle surface adheres to the adhesive surface of the protective sheet, it is possible to prevent the ink from adhering to the user's finger or clothes.

Further, according to the invention of claim 4, the surface of the counter sheet facing the protective sheet is a surface coated with an adhesive, so that the surfaces of the protective sheet and the counter sheet facing each other are made to face each other. The protective sheet is peeled from the nozzle surface by pulling the pull-out end portion which is also projected from the sheet pull-out port, and the counter sheet is firmly and firmly adhered to the protective sheet to become an integral body, and the adhesive surface of the protective sheet Can be exposed. Also in this case, even if the ink on the nozzle surface adheres to the adhesive surface of the protective sheet, it can be prevented from adhering to the user's finger, clothes, or the like.

According to the fifth aspect of the present invention, the closing means for closing the sheet outlet after the protective sheet is peeled from the nozzle surface and pulled out to the outside together with the counter sheet at the sheet outlet of the head cap. Due to the provision of the closing means, the protection sheet and the counter sheet separated from the nozzle surface are combined and pulled out to the outside of the head cap, and then the sheet outlet is closed to allow the air flow inside and outside the head cap. Can be shut off. Therefore,
It is possible to prevent the nozzle surface from drying.

According to the sixth aspect of the present invention, the head attaching / detaching mechanism mounts and fixes the ink jet head on a predetermined portion of the printer body, and the fixation is released. The head cap is moved relative to the print head in a state of being fixed to a predetermined position of the printer body to release the nozzle surface, and after the printing is completed, the head cap is closed, and the ink cartridge, the print head, the protective sheet, and the It is possible to print by jetting ink dots onto a recording paper by jetting ink into fine particles by an inkjet head equipped with a head cap having a sheet outlet for peeling and drawing out the protective sheet. Accordingly, when the inkjet head is mounted on the printer body and used, when the protective sheet is peeled from the nozzle surface, the nozzle surface can be smoothly peeled without damage or destruction.

Further, according to the invention of claim 7, in the head cap of the ink jet head, the opposing face is arranged symmetrically with the protective sheet and is folded back from the end portion on the back side toward the front side and extended. By mounting the sheet, by aligning the mutually facing surfaces of the protective sheet and the counter sheet from the sheet outlet, and projecting their withdrawing end portions, the protective sheet and the counter sheet extended from the sheet outlet By pulling the pull-out end portion of (1), the counter sheet is attached to the protective sheet separated from the nozzle surface to be integrated, and the adhesive surface of the protective sheet can be prevented from being exposed.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of an inkjet head and a printer main body to which the inkjet head is attached according to the present invention.

FIG. 2 is an enlarged cross-sectional view of the inkjet head shown in FIG.

FIG. 3 is a cross-sectional explanatory view showing a state in which a protective sheet attached to a nozzle surface is peeled off in the inkjet head.

FIG. 4 is a perspective view showing a sheet outlet formed on one side of a head cap of an inkjet head.

FIG. 5 is an enlarged cross-sectional view showing another embodiment of the inkjet head of the present invention.

FIG. 6 is a cross-sectional explanatory view showing a state in which the protective sheet attached to the nozzle surface is peeled off in the inkjet head.

FIG. 7 is a perspective view showing an embodiment of an inkjet printer according to the present invention, and is a view showing a state in which an inkjet head is mounted.

FIG. 8 is a perspective view showing an embodiment of an inkjet printer, showing the head cap in an open state.

FIG. 9 is an explanatory diagram showing a state in which a protective sheet attached to a nozzle surface is peeled off in a conventional inkjet head.

[Explanation of symbols]

11 ... Inkjet head 12 ... Printer body 13 ... Ink cartridge 14 ... Print head 15 ... Protection sheet 16 ... Head cap 17 ... Nozzle surface 18 ... Sheet outlet 19 ... Inside bottom of head cap 20 ... Draw-out end of protective sheet 21 ... Shutter 22 ... Counter sheet 23 ... Drawer end of facing sheet 24 ... Head attachment / detachment mechanism 25 ... Head cap opening / closing mechanism

Claims (7)

[Claims] 1. An ink cartridge containing ink of one color or a plurality of colors inside, a print head having a nozzle surface provided with an ink ejection hole for ejecting ink supplied from the ink cartridge, and the print head. An ink jet head comprising: a protective sheet releasably attached to the nozzle surface of the print head and covering the nozzle surface, wherein the print head is movable relative to the print head and is detachably attached to protect the nozzle surface of the print head. And a protective sheet attached to the nozzle surface in the head cap is folded back from the end on the back side toward the front side and extended to be formed on one side of the head cap. In addition, the drawer end for peeling and pulling out the protective sheet from the sheet pull-out opening is extended. Cudget head. 2. The seat outlet of the head cap,
2. The inkjet head according to claim 1, further comprising a closing unit that closes the sheet outlet after the protective sheet is peeled from the nozzle surface and pulled out to the outside. 3. An opposing sheet, which is arranged symmetrically to the protective sheet and is folded back from the rear end toward the front side, is mounted in the head cap, and the protective sheet is provided from the sheet outlet. 2. The ink jet head according to claim 1, wherein the facing ends of the facing sheets are aligned with each other so that their pull-out ends are extended. 4. The ink jet head according to claim 3, wherein a surface of the facing sheet facing the protective sheet is a surface coated with an adhesive. 5. The seat outlet of the head cap,
4. The ink jet head according to claim 3, further comprising a closing unit that closes the sheet outlet after the protective sheet is peeled from the nozzle surface, pulled out to the outside together with the facing sheet. 6. An ink jet printer for ejecting ink into fine particles from an ink jet head and spraying ink dots on a recording paper for printing, and an ink cartridge containing one color or a plurality of colors of ink inside, A print head having a nozzle surface provided with an ink ejection hole for ejecting ink supplied from an ink cartridge; a protective sheet releasably attached to the nozzle surface of the print head and covering the nozzle surface;
A head cap that moves relative to the print head and is detachably attached to protect the nozzle surface of the print head; and a protective sheet attached to the nozzle surface in the head cap on the back side. Inkjet formed by extending back from the end of the head cap toward the front side, and extending a drawer end for peeling and drawing out the protective sheet from a sheet exit formed on one side of the head cap. A head, a head attaching / detaching mechanism that mounts and fixes the inkjet head at a predetermined location on the printer body, and releases the fixation; and a head cap on the print head with the inkjet head fixed at a predetermined location on the printer body. Relative to the head cap to release the nozzle surface and close the head cap after printing. Inkjet printer characterized by comprising a de cap operating mechanism. 7. An opposing sheet, which is disposed symmetrically to the protective sheet and is folded back from an end portion on the back side toward the front side and is extended, is mounted in a head cap of the ink jet head, 7. The ink jet printer according to claim 6, wherein the protective sheet and the facing sheet have their facing surfaces aligned with each other and their drawing-out end portions are projected.