JPH071913B2 - Input/Output Devices - Google Patents

Description

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

Prior Art As a technology used in an input/output device for a terminal device such as a conventional facsimile, for example, JP-A-56-34273
"Dual-purpose transmitting and receiving heads" are known.

This has the drawback that the apparatus is large because, although the transmitting and receiving heads are integrated, the transport paths are separate.

Also, a facsimile machine disclosed in Japanese Utility Model Publication No. 58-22353 is known, in which a common transmitting and receiving roller is used but the conveying paths are separate.

There are also examples of partially sharing the transport path, but no examples of combining an integrated head to achieve miniaturization.

OBJECT OF THE PRESENT EMBODIMENT The present invention has an object to provide an input/output device which overcomes the above-mentioned drawbacks, has good reading and recording capabilities, and which allows the device to be made smaller, lighter, and less expensive, and which has a reduced number of parts.

Structure FIG. 1 is a basic structural diagram of one 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 section, 5 is a discharge roller, 5' is its tension roller, 6 is a stacker, 7 is a feed roller, 8 is a feed roller, 8' is its tension roller, 9 is a recording paper roll, 10 is a recording section, 11 is a fixed blade, 12 is a rotary blade, and 13 is a head unit.

Here, the solid line indicates the position of the head unit 13 during reading, and the dashed line indicates the position during recording.

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

The cutter does not operate during reading. The transport and drive mechanisms are omitted.

On the other hand, for recording, the leading edge of the recording paper being paid out from the recording paper roll 9 is between the pay-out roller 8 and the feed roller 7, and when a recording signal is received, the leading edge of the recording paper is sent to the left by the pay-out roller 8 and fed into the recording section 10.

After recording, the paper advances further to the left, is cut by a cutter consisting of a fixed blade 11 and a rotary blade 12, and is then discharged by discharge rollers 5. The remaining paper after cutting is pulled back to the initial position by feed roller 7 and pay-out roller 8.

As described above, by rotating the head unit 13, which has an integrally formed reading section (contact sensor) and recording section (thermal head) by a small angle α around a single feed roller 7 (reading roller and platen roller) which is used for both reading and writing, reading and recording become possible, and the transport path and transport drive system can be shared, resulting in a significant reduction in cost and facilitating miniaturization.

FIG. 2 is an explanatory diagram of a means for changing the inclination of the head unit, in which 13 is the 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 the fulcrum and 20 is the spring.

Here, the solid line indicates the reading time, and the dashed line indicates the recording time.

The lever 15 rotates to the right due to the attraction of the solenoid A 14. At that time, the head unit 13 is held to the right end by the stop lever 16, so it does not move to the right.
A roller 17 attached to the back of the head unit 13 moves along the back of the head unit 13 while rotating clockwise.

As a result, the state shown by the dashed dotted line is reached and recording becomes possible.

During recording, the torsion spring 18 attached between the stop lever 16 and the head unit 13 is deformed more than during reading, so the contact pressure against the feed roller 7 is greater and it is easier to satisfy the contact pressure conditions during reading and recording (generally the contact pressure on the recording side is greater than the contact pressure on the reading side).

3(a) and (b) show another embodiment of the present invention in which the rotation of a motor is transmitted to a shaft and the inclination is changed by moving a switching lever depending on the rotational position of an eccentric cam fixed to the shaft. Reference numeral 21 is a solenoid B, 22 is an eccentric cam, 23 is the 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 the contact pressure and other conditions.

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

FIG. 4 shows a head unit with upper and lower guides integrated as a paper inlet guide. 4 is a reading section, 10 is a recording section, 13 is a head unit, 25 is a reading side driver circuit,
Reference numeral 26 denotes a recording driver circuit, 27 denotes an upper guide, and 28 denotes a lower guide.

This improves the document transport performance of FIG.

It is also possible to move the paper guide in conjunction with the change in head inclination without integrating the paper guide with the head.

In this embodiment, the drive circuit (driver circuit) and the like are on the same surface as the sensor and the thermal element, but the necessary circuits may be provided on the opposite surface to the sensor and the thermal element.
Of course, this can also be realized by providing only the sensor circuitry etc. on the opposite side.

In the input/output device, the operation of reading an original and the operation of recording on a recording paper are performed, but these operations are generally performed independently.

In the copy mode, in which the read information is recorded directly on recording paper, the original is first read and the information is stored in memory, and after reading is complete, the information is read from the memory and recorded.

Generally, memories are large-capacity, small, and low-cost. The capacity to store the read information is limited by the mechanical system.
Compared to drive motors (pulse motors are common),
It is extremely small and lightweight, so there are no problems.

By encoding and processing the read information, the amount of information that needs to be stored in memory can be further reduced, and the reduced mechanical drive system also results in lower power consumption.

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

In the copy mode, the original is first read and then transmitted. After reading is complete, the information is output from the memory and recorded on recording paper.

The reception operation will be explained in terms of copy mode operation including transmission and reception operations.

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

SL.A is not excited, and is in the position shown by the solid line by the torsion spring 18 shown in Figure 3 (b), in which the reading section (sensor) meets the feed roller 7 and obtains contact pressure, so that the document can be fed and read in the "feed" state.

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

When the copy mode is entered, that is, when the operator places an original on the original table 1 in FIG. 1 and starts the operation of the input/output device, the system control unit (not shown) starts copying, i.e.
First, a command to start a transmission operation is issued.

At this time, SL.A is already in the "send" state as described above,
Moreover, SL.B is in a free state, and the inclination of the head unit 13 is in 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 document) can be detected by a sensor (not shown) and the pulse motor is stopped after the document is discharged.

Next, the information of the original document input to the memory is recorded, and at the start of the receiving operation shown in Fig. 5, SL.A is operated to tilt the head unit 13 to the position of the dashed line shown in Fig. 3(b) (the same as in Fig. 1). After this operation is completed, the pulse motor is rotated to operate the feed roller 7 and the pay-out roller 8.

After recording the information, the pulse motor is stopped and the SL.A is excited to return to the "send" position.

If you are not in copy mode and want to record multiple copies of a facsimile when receiving, SL.A should simply remain in the "receive" state.

The position of the SL.A can be detected by a detection sensor and the transmitting and receiving positions can be controlled by the system control unit, or the previous state can be recorded in memory or the like and the transmitting and receiving positions can be controlled. There are various methods.

In addition, the SL.A can be operated by energizing it for only the required time and continuing to operate, or by utilizing the locking mechanism of the mechanical system, the SL.A can be operated by a single excitation.

The separation rollers 2 shown in FIG. 1 operate together with the feed rollers 7 during the transmission operation (document transport), but as a means for driving them in accordance with the transmission and reception, the SL.A for operating the head unit 13 shown in FIG. 2 is used.
In synchronization with the tilting operation of the head unit 13, that is, when the position of the head unit 13 is the reading position, the separation roller 2 operates.

When the head unit 13 is located in the recording section 10, a mechanism consisting of one solenoid is used to operate the delivery roller 8, which further simplifies the system control and system configuration.

During a receiving operation, that is, when the leading edge of the recording paper enters the recording section 10 by the feed roller 8 in FIG. 1, the SL.B temporarily operates the head unit 13 to facilitate the transport of the recording paper.

SL.B in FIG. 5 shows the sequence.

After the start of the receiving operation, the SL.B is operated 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,
This prevents the recording paper from jamming, and also makes it easier for the feed roller 7 to rotate without paper when the contact pressure during reception is high. (When the contact pressure is high, there is no problem if there is paper, but if there is no paper, the friction load becomes large and the roller may not rotate.) Figure 6 shows the positional relationship between the leading edge of the recording paper and the head unit, and 29 is a guide plate. The other reference numerals are the same as those in the first
This is the same as that explained in the figure.

The position indicated by the solid line is the position where SL.B is operated, widening the gap between the head and the feed roller and making it easier for the leading edge of the recording paper to pass through.

Effects As described above, according to the present invention, the transport roller can be appropriately brought into close contact with the contact type reading section during reading, and with the recording section during recording, so that reading and recording can be performed well, and since the reading section and recording section are provided in the head unit, this has the effect of simplifying the system (electrical system, mechanical system) configuration and structure and reducing the power consumption of the device.

[Brief description of the drawings]

FIG. 1 is a basic configuration diagram of one embodiment of the present invention, FIG. 2 is an explanatory diagram of a means for changing the inclination of a head unit, and FIG.
1 and 2 show another embodiment of the present invention in which the rotation of a motor is transmitted to a shaft, and the inclination is changed by moving a switching lever depending on the rotation position of an eccentric cam fixed to the shaft. FIG. 4 shows an example in which upper and lower guides are integrated into the head unit as a paper inlet guide. FIG. 5 shows the configuration of FIGS. 1 and 3.
FIG. 6 shows the sequence of operations in the configuration of FIG.
The figure shows the positional relationship between the leading edge of the recording paper and the head unit. 1... document table, 2... separation roller, 3... separation piece, 4... reading section, 5... discharge roller, 5', 8'... tension roller, 6... stacker, 7... feed roller, 8... feed 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... shaft, 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] [Claim 1] A device comprising: a contact type reading section which reads image information from an original; a recording section which records the image information on a recording paper; a head unit which arranges said contact type reading section and said recording section on the same plane; a transport roller which transports the original and the recording paper in the same direction; and a displacement means which displaces the relative positions of said head unit and said transport roller during reading and during recording, wherein during reading, said displacement means displaces the relative positions to bring said contact type reading section and said transport roller into close contact with each other;
The input/output device according to claim 1, wherein the displacement means displaces the relative position of the recording unit and the transport roller during recording, thereby bringing the recording unit and the transport roller into close contact with each other.