JPH071913B2 - I / O device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an input / output device used for terminal equipment such as a facsimile.

2. Description of the Related Art As a technique used for an input / output device used in a terminal device such as a conventional facsimile, for example, Japanese Patent Laid-Open No. 56-34273
"Transfer / receive head" is known.

This has a drawback that the device is large because the sending and receiving heads are integrated, but the transport paths are separate.

Also, Japanese Utility Model Publication No. Sho 58-22353 "Facsimile Machine" is known, in which the transmission / reception roller is also used, but the conveyance paths are separate.

In addition, there are some examples in which the transport path is partially shared, but there is no one that is downsized by combining with a head integrated.

An object of the present invention is to provide an input / output device which solves the above-mentioned drawbacks, is good in reading and recording, and is capable of reducing the size, weight and cost of the device and reducing the number of parts. To do.

Configuration FIG. 1 is a basic configuration diagram of an embodiment of the present invention, in which 1 is a document table, 2 is a separation roller, 3 is a separation piece, 4 is a reading unit, 5 is a discharge roller, 5'is its tension roller, 6 is a stacker, 7 is a feed roller, 8 is a delivery roller, 8'is a tension roller, 9 is a recording paper roll, 10 is a recording unit, 11 is a fixed blade, 12 is a rotary blade, and 13 is a head unit.

Here, in the head unit 13, the solid line indicates the reading position and the alternate long and short dash line indicates the recording position.

The document moves from the top of the document table 1 to the left, and the separation roller 2
Then, the sheets are separated one by one by the separating piece 3, read by the reading unit 4, and then discharged onto the stacker 6 by the discharging roller 5.

Note that the cutter does not operate during reading. The transport drive relationship is omitted.

On the other hand, regarding recording, there is a leading end of the recording paper fed from the recording paper roll 9 between the feeding roller 8 and the feeding roller 7. When the recording signal is repeated, the feeding roller 8 feeds the leading end of the recording paper to the left side, Sent to part 10.

After the recording, the recording medium is further moved to the left side, and is cut by a cutter composed of a fixed blade 11 and a rotary blade 12 and discharged by a discharge roller 5. The remaining paper after cutting is pulled back to the initial position by the feed roller 7 and the feeding roller 8.

As described above, the head unit 13 in which the reading unit (contact sensor) and the recording unit (thermal head) are integrally formed has a minute angle α around the single feed / read roller 7 (reading roller and platen roller). By rotating only, it becomes possible to read and record respectively, the transport path and the transport drive system can be shared, the cost can be significantly reduced, and the size can be easily reduced.

FIG. 2 is an explanatory view of means for changing the inclination of the head unit, 13 is a head unit, 14 is a solenoid, 15 is a lever, 16 is a stop lever, 17 is a roller, 18 is a torsion spring,
19 is a fulcrum and 20 is a spring.

Here, the solid line indicates reading and the alternate long and short dash line indicates recording.

The lever 15 rotates clockwise due to the suction of the solenoid A14. At that time, since the head unit 13 is held at the right end by the stop lever 16, it does not move to the right side, and the head unit 13
The roller 17 attached to the back of the head unit 13 rotates rightward and moves on the back of the head unit 13.

As a result, the state of the alternate long and short dash line is obtained and recording becomes possible.

At the time of recording, the torsion spring 18 attached between the stop lever 16 and the head unit 13 is deformed more than at the time of reading, so the contact pressure on the feed roller 7 is large, and the contact pressure at the time of reading / recording is large. It is easy to satisfy the condition of (the contact pressure on the recording side is generally higher than the contact pressure on the reading side).

FIGS. 3 (a) and 3 (b) show another embodiment of the present invention in which the rotation of the motor is transmitted to the shaft, and the switching lever is moved to change the tilt depending on the rotational position of the eccentric cam fixed to the shaft. It is a figure which shows an example, 21 is a solenoid B, 22 is an eccentric cam, 23 is a shaft, and 24 is a switching lever.

The solenoid B21 is for facilitating the gripping of the leading edge of the recording paper between the feed roller 7 and the head unit 13 during recording, and may not be necessary depending on conditions such as contact pressure.

The torsion spring, contact pressure, etc. are the same as in FIG.
Further, instead of the eccentric cam 22, as shown in FIG. 3 (b),
The switching lever 24 may be switched by the solenoid A14.

FIG. 4 shows a head unit in which upper and lower guides are integrated with the paper inlet as a guide, 4 is a reading unit, 10 is a recording unit, 13 is a head unit, 25 is a reading side driver circuit,
26 is a recording side driver circuit, 27 is an upper guide, and 28 is a lower guide.

As a result, the conveyance performance of the original document of FIG. 1 is improved.

Note that the paper guide may be moved in association with the movement of changing the inclination of the head without being integrated.

Here, the drive circuit (driver circuit) and the like are on the same surface side as the sensor and the heat-sensitive element, but a necessary circuit may be provided on the opposite surface side of the sensor and the heat-sensitive element.
Of course, a configuration in which only the sensor circuit and the like are provided on the opposite surface can also be realized.

The input / output device performs an operation of reading a document and an operation of recording on a recording sheet, but these operations are generally performed independently.

In the operation called the copy mode, in which the read information is recorded on the recording paper as it is, the document is read first, the information is stored in the memory, and after the reading is completed, the information is output from the memory and recorded.

Generally, a memory has a large capacity, a small size, and a low cost, and the capacity to store the read information in the memory is a mechanical system,
Compared to drive motors (generally pulse motors),
It is extremely small and lightweight, so there is no problem.

By encoding and processing the read information, the amount of information to be stored in the memory is further reduced, and the small number of mechanism drive systems also results in low power consumption.

FIG. 5 is a diagram showing a sequence of operations in the configuration of FIGS. 1 and 3 (b).

In the copy mode, a document is first read, a transmission operation is performed, and after the reading is completed, information is output from the memory and recorded on a recording sheet.

The description of the reception operation is given in the copy mode operation including the transmission and reception operations.

FIG. 5 shows the state of each mechanism drive system in the initial state when the power of this input / output device is turned on. That is, solenoid A14
(Sl.A) and solenoid B21 (SL.B) are in the position shown. Of course, the pulse motor PM is not rotating.

SL.A is not excited and is in the position shown by the solid line in the torsion spring 18 shown in FIG. 3 (b), and the reading unit (sensor) matches the feed roller 7 to obtain the contact pressure, The document is in the "sending" state in which it can be fed and read.

SL.B is also not excited and can move freely (free state).

When the copy mode operation is performed, that is, when the operator sets a document on the document table 1 of FIG. 1 and starts the operation of the input / output device, the system controller (not shown) starts copying. That is,
First, a transmission operation start command is issued.

At this time, SL.A is already in the "sending" state in the above state,
Moreover, SL.B is in the free state, and the inclination of the head unit 13 is at the position shown by the solid line in FIG.

Therefore, the pulse motor is rotated to operate the feed roller 7 and the separation roller 2.

The end of reading (end of the document) can be detected and detected by a sensor (not shown) or the like, and the pulse motor is stopped after the document is discharged.

Next, the information of the original document input to the memory is recorded. The SL.A is operated at the start of the receiving operation shown in FIG. 5, and the position of the one-dot chain line shown in FIG. The same applies to the figure), the head unit 13 is tilted. After this operation is completed, the pulse motor is rotated to operate the feed roller 7 and the feeding roller 8.

After recording the information, stop the pulse motor and send SL.A excitation to return to the "send" position.

If you want to record multiple sheets when receiving a fax instead of in copy mode, SL.A should be kept in the "received" state.

The position of SL.A may be detected by the detection sensor and the position of sending and receiving may be controlled by the system control unit, or the previous state of memory etc. may be recorded and the position of sending and receiving may be detected. It may be controlled and there are various methods.

In addition, the SL.A operation can be performed by exciting it for a required time and continuing the operation, or by using the lock mechanism of the mechanical system, the SL.A operation can be performed by a single excitation.

The separation roller 2 shown in FIG. 1 operates together with the feed roller 7 during the transmission operation (original conveyance), but as a means for driving the transmission and reception, the head unit 13 shown in FIG. Head unit using .A
In synchronization with the tilting operation of 13, that is, when the position of the head unit 13 is the reading position, the separation roller 2 operates.

When the position of the head unit 13 is the recording unit 10, the system control and the system configuration can be further simplified by using a mechanism configured by one solenoid so that the feeding roller 8 operates.

SL.B is operated during the receiving operation, that is, when the leading edge of the recording sheet enters the recording section 10 by the feeding roller 8 in FIG. 1, the head unit 13 is temporarily operated to facilitate the conveyance of the recording sheet. Let

SL.B in FIG. 5 shows the sequence.

After the reception operation is started, SL.B is operated so as to lift the head unit 13 for a temporary period until the leading edge of the recording paper enters the recording section.

This action causes the leading edge of the recording paper to hit the feed roller,
The recording paper jam can be prevented and the feed roller 7 can be easily rotated without the paper when the contact pressure at the time of reception is high. (There is no problem if there is paper when the contact pressure is high, but if there is no paper, the frictional load increases and it may not rotate.) FIG. 6 is a diagram showing the positional relationship between the leading edge of the recording paper and the head unit. And 29 is a guide plate. Other symbols are first
It is the same as that explained in the figure.

The position indicated by the solid line is the position where SL.B is operated, and the gap between the head and the feed roller is widened, and the leading edge of the recording paper easily passes.

Advantageous Effects As described above, according to the present invention, it is possible to appropriately bring the carrying roller into close contact with the contact-type reading unit during reading and with the recording unit during recording. Since the reading unit and the recording unit are provided, the system (electrical and mechanical system) configurations and structures can be simplified, and the power consumption of the apparatus can be reduced.

[Brief description of drawings]

FIG. 1 is a basic configuration diagram of an embodiment of the present invention, FIG. 2 is an explanatory diagram of means for changing the inclination of a head unit, and FIG. 3 (a).
And (b) are views showing another embodiment of the present invention in which the rotation of the motor is transmitted to the shaft and the inclination is changed by moving the switching lever according to the rotational position of the eccentric cam fixed to the shaft. FIG. 4 is a view showing an example in which a vertical guide is integrated with the head unit as a paper inlet guide, and FIG. 5 is shown in FIGS.
The figure which shows the sequence of the operation | movement in the structure of FIG.6 (b), 6th
The figure shows the positional relationship between the leading edge of the recording paper and the head unit. 1 ... Original table, 2 ... Separating roller, 3 ... Separating piece, 4 ... Reading section, 5 ... Ejecting roller, 5 ', 8' ... Tension roller, 6 ... Stacker, 7 ... Feeding roller , 8: feeding roller, 9: recording paper roll, 10: recording section, 11: fixed blade, 12: rotating blade, 13: head unit, 14: solenoid A, 15: lever, 16 ...... Stop lever, 17 ...... Roller, 18 ...... Torsion spring, 19 ...... fulcrum, 20 ...... Spring, 21 ...... Solenoid B, 22 ...... Eccentric cam, 23 ...... Axis, 24 ...... Switching lever, 25 ...... Reading side driver circuit, 26 …… Recording side driver circuit, 27 …… Upper guide, 28 …… Lower guide, 29 …… Guide plate.

Claims (1)

[Claims] 1. A contact type reading unit for reading image information of a document, a recording unit for recording image information on a recording sheet, and a head unit for arranging the contact type reading unit and the recording unit on the same surface, It is provided with a conveying roller for conveying the original and the recording paper in the same direction, and a displacement means for displacing the relative position of the head unit and the conveying roller at the time of reading and recording, and at the time of reading, the relative position is moved by the displacement means. While being displaced to bring the contact-type reading unit and the transport roller into close contact,
An input / output device, wherein at the time of recording, the relative position is displaced by the displacement means to bring the recording unit and the transport roller into close contact with each other.