JPS6238074A - Input and output unit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an input/output unit for facsimile machines, terminal equipment, and the like.

(2) Prior Art Conventionally known technologies include, for example, JP-A-56-34273R Transmission/Reception Head and JP-A-Sho 58-22353R Facsimile Device.

In the former case, although the sending and receiving heads are integrated, the conveyance paths are separate, resulting in a problem that the device is large and complicated.

In the latter case, the transmitting and receiving rollers are shared, but the conveyance paths are separate.

Although there are other examples in which the conveyance path is partially shared, there are no examples in which the size is reduced by combining the head with an integrated head.

(1) Purpose It is an object of the present invention to reduce the size, cost, and ease of implementation of an input/output unit in a facsimile machine or the like.

■Configuration FIG. 1 is a diagram schematically showing the configuration of an input/output device in which the input/output unit of the present invention is mounted on the device, 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 a tension roller, 6 is a stacker, 7 is a feed roller, 8 is a feeding roller, 8' is a tension roller, 9 is a recording paper roll, 10 is a recording section,
11 is a fixed blade, 12 is a rotating blade, and 13 is a head unit.

The document advances from the top of the document table 1 to the left and passes through 1 separation roller 2.
The sheets are separated one by one by the separating piece 3, read by the reading section 4, and then discharged onto the stacker 6 by the discharge roller 5.

At this time, the reading section 4 moves to the left by half of a, or the feed roller 7 moves to the right by the same amount, and comes into contact with the feed roller (reading roller) 7, allowing proper reading. Also, the cutter does not move differentially.

On the other hand, regarding recording, the leading edge of the recording paper fed out from the recording paper roll 9 is located between the feeding roller 8 and the feed roller 7, and when a recording signal is received, the leading edge of the recording paper is fed to the left by the feeding roller 8, and the leading edge of the recording paper is fed to the left side by the feeding roller 8, and the leading edge of the recording paper is fed to the left side by the feeding roller 8, and the leading edge of the recording paper is fed to the left side by the feeding roller 8. It is sent to section 10.

The printed page advances to the left, is cut by a cutter consisting of a fixed blade 11 and a rotary blade 12, and is then discharged by a discharge roller 5. In addition, at this time, the recording unit 10 moves to the right by half of a, or the feed roller 7 moves to the left by the same amount and comes into contact with the feed roller (platen roller) 7, so that proper recording is possible. Become.

Further, the remaining paper after cutting is pulled back to the initial position by the feed roller 7 and the feed roller 8. The drive system is omitted.

As described above, the head unit 1 has the reading section (contact sensor) 4 and the recording section (thermal head) 10 integrally formed.
By relatively moving the feed roller 7 for both read and write functions by a small amount, reading and recording can be performed separately, the conveyance path and conveyance drive system can be shared, and the cost can be significantly reduced. , miniaturization becomes easy.

FIG. 2(a) is an explanatory diagram of the method of moving the feed roller, and FIG. 2(b) is an explanatory diagram of the drive system.

Here, the solid line shows the time of recording, and the dashed line shows the time of reading.

In FIG. 2(a), 14 is a solenoid; a roller.

15 is a solenoid; head contact/release, 16.17 is a compression spring, 18 is a lever, 19 is a fulcrum shaft, 20 is a fulcrum,
7 and 13 are the same feed rollers and head units as explained in FIG.

In FIG. 2(b), 21 and 21' are gears, 22 is a transmission side drive gear, 23 is a reception side drive gear, 24 is a feed roller shaft (during transmission), 25 is a feed roller shaft (during reception), 26 is a fulcrum shaft, 27 is a belt, and 28 is a pulley.

Solenoid: feed roller 7 by suction of roller 14
The position of is switched from the reading section 4 to the recording section 10.

At the time of switching, the solenoid; head contact/disconnection 15 may be sucked to facilitate operation.

Solenoid: Head contact/release 15 is used to suck paper when it reaches the reading section or recording section, improve gripping, and then immediately return it to its original position to improve conveyance, but the contact pressure, conveyance force, etc. may no longer be necessary depending on the conditions.

As shown in FIG. 2(b), the driving relationship of the rollers is as shown in FIG. This is further transmitted to a gear 21 fixed to the feed roller shaft 24 to rotate the feed roller 7.

Fig. 3 is a diagram in which the head unit is moved in the opposite direction to Fig. 2, and 7 is a feed roller.

13 is the head unit, 15 is the solenoid;
15' is a solenoid; 16.17 is a compression spring; 18 is a lever; 20 is a fulcrum.

As in FIG. 2, the solid line is switched to the dashed-dotted line by the suction of the solenoid. You can also use a motor and cam to move the lever instead of a solenoid.

FIG. 4 is a diagram showing the basic configuration of the head unit.
is a reading unit, 10 is a recording unit, 13 is a head unit, 29
30 is a recording side driver circuit, and 30 is a reading side driver circuit.

In terminal devices and the like that perform recording, a method is adopted in which a necessary number of sensors are provided to detect the presence or absence of recording, jams during transportation, paper size, and the like.

This sensor is usually a photosensor and is attached to a predetermined position.

However, as the demand for smaller size, lighter weight, and lower cost increases, restrictions on where these photosensors can be installed become stricter, and the need for power supply wires for sensors, wires for signal extraction, connectors, etc. In terms of implementation, it will also be difficult to implement this method.

In order to install the product, problems may occur during installation, assembly, and adjustment work.

This head unit is smaller, lighter, and...
In order to meet the requirements of ・, etc., this is a unit that realizes the above-mentioned sensor that specifically integrates both recording and reading functions and is suitable for those requirements. This unit is capable of lighting only a predetermined portion of the group, and can be used as a light source for a photosensor for detecting the presence or absence of recording paper, jams during transportation, paper size, etc.

This eliminates the above-mentioned mounting problems, the tJs type, and the need for a new light source as a photosensor for detecting recording paper. The lighter, thinner, shorter, and smaller the product, the greater the effect.

When reading a document, all the light sources are turned on, and when detecting recording paper, the light sources are turned on within a predetermined range where recording paper can be detected. For this purpose, an interface is provided that allows selection of the light source provided in the head unit.

FIGS. 5(a), 5(b), and 5(c) show a light (LED) and a lighting circuit when reading a conventional document.

FIG. 5(a) shows that one line is composed of N blocks of LEo groups, and one block has n LEDs connected in series. L is the required length in the main scanning direction.

In FIG. 5(b) and FIG. 5(C), D and E are 1,
It is an interface for HD lighting, and one block has n L
The LED consisting of N blocks consisting of ED has a fifth
The necessary power is supplied from the LED ON signal terminal shown in Figure (b). FIG. 5(c) shows this supply circuit.

FIG. 6 is an example of a conventional light source and lighting circuit having another configuration. Here, 31 is a wear-resistant layer.

This is an example in which the LEDs are arranged in two rows, and arranged on both sides of the reading resensor.

In this conventional example, when the LED is driven, the entire row emits light, and the connection state is such that the light source cannot be turned on only at a predetermined location for detecting recording paper, etc.

FIG. 7 shows an example of connection of a group of light sources in a head unit shown in a frame according to the present invention.

In FIG. 7(a), A, B, C, D, and E indicate interfaces (I/F), and A/F is a lighting I/F that detects the skew of the recording paper.

B I/F is a lighting I/F that detects the presence or absence of recording paper.

CI/F is a lighting I/F and AI that detects the width of recording paper.
/F can also be used.

E I/F is an I/F that lights up when reading a document.

D I/F is a common I/F for supplying current.

This is an example of - column configuration, - among the light source groups of the scanning line,
This is an example of lighting up three places c, e, and A, compared to Fig. 5.
, B, and C are connected to turn on the light source only in predetermined locations, and when reading 9 originals that can be connected externally, apply current to the I/F of D-E and light up for the length of scanning lines 1 to N. .

Next, in the case of recording paper detection, etc., the A, B, and C I/F
By using the I/F of D-A, D-B, and D-C, current can be caused to flow through the required locations as needed, and the predetermined locations can be turned on.

FIG. 7(b) is an enlarged example of the block in FIG. 7(a).

In this case, among the four LEo's of k block, 2, 3...
This is an example of a connection in which three of No. 4 are lit.

This may be two or one light within the range that can be detected by the recording paper, and if four lights need to be lit, the dotted line LE
It is sufficient to have a configuration in which D (additional portion) is added. In this example, A, B, and C can be turned on independently.

FIG. 8 is a diagram showing another embodiment of the present invention.

The configuration of this head unit is an example in which it is possible to light up predetermined locations at the same time using one I/F line. , which can be realized using an even easier method.2 In this example, to light up the three locations c, e, and
All you have to do is pass current through the I/F of X.

■Effects As explained above, according to the present invention, by relatively moving the head unit that integrally forms the reading section and the recording section and one feed roller for both reading and writing by a small amount, reading and writing It is possible to record separately, the conveyance path and conveyance drive system can be shared, and the cost can be significantly reduced.
This has the advantage of being easy to downsize.

[Brief explanation of drawings]

Fig. 1 is a diagram schematically showing the configuration of an input/output device in which the input/output unit of the present invention is mounted on the device, Fig. 2 (a) is an explanatory diagram of a method of moving the feed roller, and Fig. 2 (b) is An explanatory diagram of the drive system, Figure 3 is a diagram when the head unit moves in the opposite way to Figure 2, Figure 4 is a diagram showing the basic configuration of the head unit, Figure 5 (aL (b) , (c) is a diagram showing a conventional light source (LED) and lighting circuit when reading a document, FIG. 6 is a diagram showing an example of a conventional light source and lighting circuit according to another configuration, and FIG. A diagram showing an example of the connection of the light source group in the head unit shown in the frame, and FIG. 8 is a diagram showing another embodiment of the present invention.] - Document table, 2... Separation roller, 3
... Separation piece, 4 ... Reading section, 5 ... Ejection roller, 5', 8' ... Tension roller. 6 ... Stacker, 7 ... Feed roller, 8
... Feeding roller, 9 ... Recording paper roll, 10
...recording department, 11. ... Fixed blade, 12... Rotating blade, 13... Head unit, 14... Solenoid; Roller, 15... Solenoid; Head contact/release, 15'...
Solenoid; head, 16, 17...compression spring, 1
8... Lever, 19... Fulcrum shaft, 20... Fulcrum, 21.21'... Gear, 22... Sending side drive gear, 23... Receiving side driving gear, 24... Feed roller axis (when sending), 25... Feed roller - axis (when receiving), 26... Fulcrum axis, 27...
- Belt, 28... Pulley, 29... Recording side driver circuit, 30... Reading side driver circuit, 31... Wear-resistant layer. Patent applicant Ricoh Co., Ltd. Figure 2 (a) 27 Be, Reto 28 Fu1-So (b) Figure 3 Figure 5 (a) Figure 6 Figure 7 (a) (b)

Claims (1)

[Scope of Claims] A reading unit that reads a document and a recording unit that records necessary information on recording paper, and in a conveyance path system that conveys the recording paper, the reading unit is disposed in front of the recording unit, The reading unit has a unit configuration in which a reading section and a recording section are integrated, and the reading section is equipped with a light source group that illuminates a surface of an object in order to read a document, and the light source group can be turned on in response to reading the document, Other than that, the input/output unit is characterized by having a connection function for a light source group that can turn on only a predetermined part of the light source group, and an external connection function.