JPS62209962A - Reading and recording device - Google Patents

Abstract

PURPOSE:To scale down a reading and recording part by integrally forming a contact type image sensor and a thermal head. CONSTITUTION:The contact type image sensor and the thermal head are integrally formed. For reading an original, a reading and recording unit 1 is brought into contact with the side of a reading conveyance roller 5 with pressure. the originals placed on an original table 12 are separated one by one by an original separation roller 3, and read at the position of the read conveyance roller 5, after which an original discharge roller 6 discharges said originals to a stacker 13. In the middle of reading, a recording conveyance roller 8 rotates in a reverse direction, however it has no conveyance force because it is not pressed on the thermal head. Accordingly the tip of a recoriding paper stops just before a cutter 9. In order to start recording, the reading and recording unit 1 is contacted the recording conveyance roller 8 with pressure, and a motor is normally rotated to send the recording paper in the reverse direction. Then the tip of the recording paper is rewound at the recording position of the reading and recording unit 1.

Description

Detailed Description of the Invention ■Technical Field The present invention relates to a facsimile machine using a contact type image sensor and a thermal head, and a reading/recording device used in a copying machine, etc. using a contact type image sensor and a thermal head. It is related to.

■Prior Art In conventional facsimile machines, the reading section and the recording section were each independent units.

Therefore, since the contact image sensor and the thermal head are always in pressure contact with their respective conveyance rollers, if one motor were to drive both conveyance rollers, the load on the motor would be too large. Further, there was a problem in that the rollers that do not need to be conveyed also rotate.

In addition, if we tried to press the contact image sensor and the thermal head into pressure contact only when necessary, we would have to provide a mechanism for each pressure contact, resulting in problems such as the complexity of the mechanism and the increase in the number of parts. .

FIG. 3 shows a side view of a conventional facsimile machine using a contact type image sensor and a thermal head.

Here, 31 is a contact type image sensor, 32 is a transmission document, 33 is a document separation roller, 34 is an intermediate conveyance roller, 35 is a reading conveyance roller, 36 is a document discharge roller, 37 is a recording paper roll, and 38 is a thermal head. , 39 is a recording conveyance roller, 40 is a cutter, 41 is a recording paper discharge roller, 42 is a document table, 43 is a document stacker, and 44 is a recording paper stacker.

Since the transmission document and the recording paper pass through completely different transport paths, two motors are required to drive the reading transport roller 35 and the recording transport roller 39.

In view of the above, dedicated motors are required for each of reading and recording, which is a burden in terms of space and cost.

(2) Purpose It is an object of the present invention to provide a compact and low-mounted reading device for facsimile.

■Structure Fig. 1 is a side view of a facsimile machine equipped with a reading and recording device according to the present invention, in which 1 is the reading and recording device, 1-12 is a document to be sent, 3 is a document separation roller, 4 is an intermediate conveyance roller, and 5
is a reading conveyance roller, 6 is a document discharge roller, 7 is a recording paper roll, 8 is a recording conveyance roller, 9 is a cutter, 10 is an intermediate conveyance roller, 11 is a recording paper discharge roller, 12 is a document table, and 13 is a stacker. be.

The reading section of the contact type image sensor and the recording section of the thermal head are located substantially parallel to the surface of the reading and recording unit 1, and the reading section and the recording section are opposed to their respective conveyance rollers.

The contact type image sensor and the thermal head are integrated, which has the advantage of miniaturization, such as the ability to use the heat sink part of the thermal head as the base of the contact type image sensor.

The reading/recording unit 1 is supported so as to be able to come into pressure contact with the reading/conveying roller 5 and the recording/conveying roller 8 alternately, but does not come into contact with both rollers at the same time.

Therefore, since document conveyance and recording paper conveyance are not performed at the same time, it is possible to use one motor for both reading and recording.

The document conveyance system includes document separation rollers 3, intermediate conveyance rollers 4. The recording paper conveyance system is composed of a reading conveyance roller 5, a document ejection roller 6, etc., and a recording conveyance roller 8, an intermediate conveyance roller 10, etc.
, recording paper discharge roller 11, and the like.

Of these, at least two rollers, the reading conveyance roller 5 and the recording conveyance roller 8, are driven by one motor, and here we will describe a method in which all the rollers are driven by one motor.

The motor rotates forward and reverse, and when it rotates forward, all rollers in the document transport system move in the direction that sends out the document.

In the recording paper conveyance system, the recording conveyance roller 8 is rotated in a direction to pull back the recording paper. At this time, the other rollers of the recording paper conveyance system are prevented from being driven by using a one-way clutch or the like.

Next, when the rotation is reversed, all the rollers in the recording paper conveyance system are rotated in the direction to send out the recording paper, and the rollers in the document conveyance system are not driven.

The original paper ejection roller 6 and the recording paper ejection roller 11 are in contact with each other, and the rollers that are not MllJ rotate together.

FIGS. 2(a) and 2(b) are diagrams showing a method of press-contacting the reading/recording unit, in which 21 is a reading section, 22 is a recording section, and 23 is a reading/recording unit.
indicates the swinging part. Other symbols are the same as those shown in FIG.

(This is an example where the reading section and the recording section are located on opposite sides of the reading and recording unit.) As shown in the figure, the reading and recording unit 1 is slid or swung, Pressure is applied to each of the reading and recording conveyance rollers. Although not shown, it is driven by a solenoid or the like.

Next, the operation of the single-line reading and recording device will be described.

This reading/recording device has two functions: reading originals and printing on recording paper.
It has two functions.

When reading a document, the reading/recording unit 1 is pressed against the reading conveyance roller 5 side.

The original placed on the original table 12 is placed on the original separating roller 3.
The documents are separated one by one at
3 It is ejected upward.

Even if there are multiple originals, this operation is repeated to read them.

While reading is being performed, the recording conveyance roller 8 is rotating in the opposite direction, but since it is not in pressure contact with the thermal head, it has no conveyance force. Therefore, the leading edge of the recording paper is stopped before the cutter 9.

When starting recording, the reading and recording unit 1 is pressed against the recording and conveying roller 8, and the motor is rotated forward to feed the recording paper in the opposite direction, and the leading edge of the recording paper is rewound to the recording position of the reading and recording unit 1.

After the recording paper is set in a fixed position, the motor is reversed to perform recording, and when recording is completed, the recording end is conveyed to a cutter 9 and cut. At that point, the unit is moved to the reading conveyance roller 8 side, and the motor is rotated in the normal direction.

The portion of the recorded recording paper remaining in the apparatus is discharged by the document discharge roller 6. The leading edge of the unrecorded recording paper remains in front of the cutter 9 until it is rewound when the next recording is performed. This operation is repeated when recording multiple sheets in succession.

When copying, reading a large number of sheets in succession requires a large capacity memory, so it is also possible to record each time one sheet is read. The method is described below.

When the first document has been read, the reading/recording unit 1 is moved to the paper transport roller 8 side, the motor is rotated forward, the leading edge of the paper is rewound, and the next document is set at the reading start position. . During this time, the first document is discharged onto the stacker 13.

Next, reverse the motor and begin recording. While recording is being performed, the document is stopped at the reading start position.

When the recording is finished and the recording terminal is cut, the reading/recording unit 1 moves to the reading side and starts reading. The leading edge of the unrecorded recording paper is stopped in front of the cutter 9 while reading is being performed.

After reading the second sheet of original, the same operation as for the first sheet is repeated to record.

After repeating this several times, when the last page has been recorded, the reading/recording unit 1 moves to the reading side, ejects the original and all the recorded paper, and the unrecorded recording paper is placed in front of the cutter 9. stop in a certain state.

In addition, if it has enough memory to read a large number of sheets.

In that case, if you read all the originals first and then record them,
The time required to switch between reading and recording is reduced.

■Effects As explained above, the present invention is capable of reducing the size of the reading and recording part by integrating the contact type image sensor and the thermal head, and also has a mechanism that presses against the reading and recording conveyance rollers. Can be shared.

As a result, since the integrated reading and recording unit is pressed against only one of the conveyance rollers, the paper conveyance motor can be shared for reading and recording.

By sharing the motor, it is possible to reduce the size and cost of the reading/recording device.

[Brief explanation of drawings]

FIG. 1 is a side view of a facsimile machine equipped with a reading/recording device according to the present invention, FIGS. 2(a) and 2(b) are diagrams showing a method of pressing the reading/recording units 1 to 1, and FIG. 3 is a contact type image sensor. and a side view of a conventional facsimile machine using a thermal head. 1...Reading and recording unit, 2...Transmission original, 3
...Document separation roller, 4 ...Intermediate transport roller, 5
...Reading conveyance roller. 6... Original ejection roller, 7... Recording paper roll, 8
... Recording conveyance roller, 9 ... Cutter, 10.
...Intermediate conveyance roller, 11...Recording paper ejection roller, 12...Document table,
13... Stacker, 21... Reading section, 22... Recording section, 23... Swinging section. Patent Applicant: Ricoh Co., Ltd., Do-no' Figure 1 4 YavI vague υ-ra 11 Sudden, 1 work-70-ra 5S previous negative history ? 6 Rapid pigeon JIF castle roller 13
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[Stock Law] Figure 2 (a) (b) 22 Criminal Cases 23 Criminals 4b Marshal Figure 3

Claims (1)

[Claims] A reading and recording unit that integrates a contact image sensor and a thermal head, a reading and conveying roller and a recording and conveying roller that receive driving force from the same motor, and a reading section and a recording section that alternately move the rollers. A reading/recording device comprising: support means for a reading/recording unit that can be pressed into contact with the reading/recording unit.