JPS63155862A - Facsimile equipment used for transmission and reception in common - Google Patents

Abstract

PURPOSE:To carry both an original to be transmitted and a recording paper through the use of a single prime mover by using one sheet feeding roller for both as a paper feeding roller for reading and a paper feeding roller for recording, and using a sun and planet motion mechanism. CONSTITUTION:At the time of transmitting, the sheet feeding roller 3 rotates clockwise, and the original feeding roller 4 and the recording paper feeding roller 6 rotate, and the original 21 to be transmitted is carried. The original 21 is read at a reading spot 17 by an image sensor 19 through a lens 18 by the reflected light of a light source 16. At that time, an arm 7 also rotates by the rotation of the roller 3, and because a planet gear 8 disengages the engagement to the roller 10a and a gear 10c, a thermosensible paper 22 is not carried. Next, at the time of the reception, the roller 3 rotates counter clockwise, and the planet gear 8 engages to the gear 10c, and a recording paper guide rollers 10a, 10b are driven so that the thermosensible paper is carried. The carried thermosensible paper is supplied between a thermosensible recording head 14 and a platen 13, and a heat recording is performed by a heating part 14a.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a facsimile device for both transmitting and receiving functions, and more particularly, to a facsimile device for both transmitting and receiving functions that can transport a transmission document and recording paper using a single drive source. It is something.

[Conventional technology]

In contrast to separate 7mm facsimile machines that have separate transmitter and receiver functions, a transmitter/receiver facsimile machine can share the drive means and the structure that supports the drive means, so the overall size of the machine can be reduced. 9. Not only can it be made more compact and lower in price, but it also reduces operating noise. It has advantages such as power saving and easy maintenance.

In conventional facsimile machines that can be used both for sending and receiving, ■The conveyance path for the transmitted original in the reading section and the conveyance path for the recording paper in the recording section are separate, but the transmitted original and the recording paper are conveyed by a single drive source. (2) A method is known in which the conveyance path for the transmitted original and the conveyance path for the recording paper are partially shared, thereby simplifying these conveyance paths and driving them by a single drive source.

Note that related devices of this type include, for example, Japanese Patent Application Laid-Open No. 57-39668 and Japanese Patent Application Laid-Open No. 57-2015.
No. 70 and Japanese Unexamined Patent Publication No. 60-210054.

[Problem that the invention seeks to solve]

Although the above-mentioned conventional technology uses a single drive source to transport the transmitted document and the recording paper, in both cases a clutch mechanism is provided between the recording paper feed roller and the pulley, and the clutch is turned off during transmission. By stopping the rotation of the recording paper feed roller, conveyance of the recording paper is stopped at the time of transmission. Further, since a belt is used as a power transmission mechanism for the conveyance path, not only is the structure complicated, but there are also problems in the reliability of the device.

The present invention improves the problems of the prior art as described above, and provides a facsimile machine for transmitting and receiving, which has a simple structure and is highly reliable, capable of transporting a transmission document and recording paper using a single drive source. , that is its purpose.

[Means for solving problems]

Structure of a facsimile machine for transmitting and receiving according to the present invention to solve the above problems L1 A facsimile machine for transmitting and receiving capable of transporting a transmission original and recording paper by a single drive source provided in the main body of the device. ,
A flat platen fixed to the apparatus main body, a recording head movably biased in a direction to press against the flat platen,
A reading element that can read the reading position of the transmitted document that has come between the recording head and the flat platen, a sheet feeding roller that is driven by a drive source and can rotate in both forward and reverse directions, and this sheet feeding roller a transmission document feed roller that can convey the transmission document between the flat platen and the recording head while holding the document to be transmitted; and an arm that is rotatable about the rotation axis of the sheet feed roller. a planetary gear rotatably supported at the other end and meshing with a gear fixed to the rotating shaft; a pair of recording paper guide rollers to which the rotation of the planetary gear is transmitted when the recording paper is conveyed; The apparatus includes a recording paper feed roller that can convey the recording paper between the flat platen and the recording head while holding the recording paper coming out of the paper guide roller between the sheet feed roller and the paper guide roller. .

More details are as follows.

A fixed flat platen, a recording head that is movable in the direction of pressing the flat platen, a reading element that reads the vicinity of the portion of the transmitted original that is pressed against the platen surface by the recording head, and a recording head that , a single sheet feeder comprising means for pressing the transmission original or recording paper against the platen surface through the transmission original or recording paper, and driven in forward and reverse rotation in order to feed the transmission original or recording paper between the flat platen and the recording head. a transmission document feed roller that pinches and conveys the transmission document between the sheet feed rollers, a recording paper feed roller that pinches and conveys the recording section between the sheet feed rollers, and a rotation shaft of the sheet feed roller. A planetary gear mechanism is supported by an arm that meshes with a gear fixed to an end of the sheet feed roller and is rotatable about the rotation axis, and the rotation of the sheet feed roller is transmitted to the planetary gear when the recording paper is conveyed. This is achieved by configuring a conveyance path for the transmission document and the recording paper using a pair of guide rollers that nip and convey the recording paper.

[Effect]

The sheet feed roller is driven by a single drive source to rotate forward and backward, and the sending document feed roller and the recording paper feed roller are always in contact with each other, and the sheet feed roller rotates during transmission and reception. The transmission document feed roller and the recording paper feed roller are driven in opposite directions, and the transmission document feed roller and the recording paper feed roller respectively grip and convey the transmission document and the recording paper between the flat platen and the recording head. feed paper. During transmission, the original to be sent is transported, but the recording paper is not transported, and if the recording paper is held between the sheet feed roller and the recording paper feed roller, the recording paper is pulled back and the edge of the recording paper is aligned with the sheet. The recording paper will come out of the grip between the feed roller and the recording paper feed roller, but at this time, the revolution of the planetary gear cuts off the drive of the recording paper guide roller, so the edge of the recording paper is no longer held between the two paper guide rollers. There is no way to get rid of it. There is no problem even if there is no recording paper between the sheet feed roller and the recording paper feed roller at the start of transmission. During recording, the transmission document feed roller rotates in a direction in which the transmission document cannot be inserted, so there is no possibility that the transmission document will be conveyed by mistake. Then, as the sheet feed roller rotates, the planetary gear revolves in the opposite direction and the rotation of the sheet feed roller is transmitted to the recording paper guide roller, which conveys the recording paper and records it. The edge of the paper is held between a sheet feed roller and a recording paper feed roller, and the recording paper is conveyed between the flat platen and the recording head. The means for pressing the recording head against the flat platen stops pressing the recording head against the flat platen while conveying the transmission original or recording paper, so that it does not interfere with sheet conveyance.

〔Example〕

Hereinafter, the present invention will be explained by examples.

FIG. 1 is a sectional view of a main part of a facsimile machine for transmitting and receiving according to an embodiment of the present invention, and FIG. 2 is a detailed sectional view of the vicinity of the rotation axis of a sheet feed roller in FIG. 1.

The outline of this facsimile device for both sending and receiving purposes will be explained with reference to FIG. A flat platen 13 fixed to the main body of the apparatus, a thermal recording head 14 which is a recording head movably biased in the direction of pressing against the flat platen 13, and an image sensor 19 that is a reading element that can read the reading device 17 of the transmission document 21 that has come between the recording head 14 and the flat platen 13;
A sheet feeding roller 3 which is driven by a step motor 1 and is rotatable in both forward and reverse directions, and this sheet feeding roller 3, while holding the transmission document 21 between the flat platen 13 and the thermal recording head 14, A sending document feed roller 4 that can be conveyed between the sheets, and an arm 7 that is rotatably supported by the other end of an arm 7 that is rotatably provided around the rotation shaft 3a of the sheet feed roller 3, and A planetary gear 8 meshing with a fixed gear 3b, and a pair of recording paper guide rollers 10a to which the rotation of the planetary gear 8 is transmitted when the recording paper is conveyed.

1ab and the recording paper guide rollers 1Da and 10b, the thermal recording paper 22 can be conveyed between the flat platen 13 and the thermal recording head 14 while being held between the sheet feeding roller 3. This is a facsimile machine for both sending and receiving functions, and has a recording paper feed roller 6.

This will be explained in detail below.

A sheet feed roller 5 for reading and transmitting purposes, which is driven by a step motor 1 and a reduction gear 2, is supported within the main body of the apparatus. A rotatably supported transmission document feed roller 4 and a recording paper feed roller 6 are in contact with the sheet feed roller 3, and an auxiliary roller 5 is in contact with the transmission document feed roller 4. At the end of the rotation shaft 3a of the sheet feed roller 30, there is an arm 7 that is rotatable around the rotation shaft 3a.
A planetary gear 8 is rotatably supported at the other end of the arm 7, and meshes with a gear 3b fixed to the rotating shaft 3a. The gear 3b also meshes with the reduction gear 2. 9 is a stop member that limits @70 rotations,
Supported by the main body of the device. o below the pair of recording paper guide rollers 10a and 10b that guide and convey the thermal recording paper 22.
-, rloa are rotatably supported by the main body of the device, and a gear 10c that meshes with the planetary gear 8 is fixed to the end of the rotating shaft.

The upper roller 10b has a rotatable arm 12 that is biased downward by a spring 11 interposed between the upper roller 10b and the main body of the device.
The rotating shaft is supported by the roller 10a, and can be moved into contact with and separated from the roller 10a, thereby facilitating the apparatus of the thermal recording paper 22. Further, a flat platen 13 is fixed to the left side of the recording paper feed roller 6 in the apparatus main body, and a thermal recording head 14 is rotatably supported at its lower end near the opposite side. . The thermosensitive recording head 14 is provided with a heat generating portion 14a on the side surface near its upper end. A spring 15 is interposed between the thermal recording head 14 and the main body of the apparatus, and this spring 15 presses the heat generating part 14a against the flat platen 13 via the thermal recording paper 22 or the transmission document 21. Hept 14 is energized.

The thermal recording head 14 is subjected to a suppressing and separating operation by a solenoid (not shown).

A document insertion slot 30 is provided at the bottom of the main body of the device.
The inserted transmission document 21 is passed between the transmission document feed roller 4 and the auxiliary roller 5, passes through the guide member 31, and then passes between the transmission document feed roller 4 and the sheet feed roller 3 through the guide members 52 and 33. The paper is guided by the paper and fed between the thermal recording head 14 and the flat platen 13.

On the other hand, inside the main body of the apparatus, a paper cylinder 22a of the thermal recording paper 22 is rotatably supported by a paper cylinder stand 36. The thermal recording paper 22 pulled out from the paper tube 22a is moved between the recording paper guide and feed rollers 10a and 10b by the recording paper guide member 34.
．． The paper is fed through the cutter 35, between the sheet feed roller 23 and the recording paper feed roller 6, and through the guide member 53 between the thermal recording head 14 and the flat platen 13.

Further, a light source 16 such as a fluorescent light is provided near the flat platen 13, and this light source 16 is connected to the flat platen 13.
The reading device 17, which is set in the vicinity of the surface immediately below the heat generating portion 14a of the thermal recording head 14, is irradiated with the light. An image sensor 19 is opposed to this reading position 17 with a lens 18 interposed therebetween.

A detection element 40 for detecting the presence of the transmission document 21 is provided near the transmission document feed roller 4 and the auxiliary roller 5 . Further, a detection element 41 is provided near the guide member 32 to detect the presence of the transmission original 21 and the thermal recording paper 22. By these detection elements 40 and 41, the transmission document 2
1, the leading edge or trailing edge of the thermal recording paper 22 is detected, and the timing until the reading of the transmission document 21 is started, the timing of the elapsed reading time is controlled, and the leading edge of the thermal recording paper 22 is detected, and the timing of the recording start is controlled, etc. This is to obtain the basic signal for carrying out the process.

In FIG. 2, the arm 7, which is rotatable about the rotating shaft 3a of the sheet feed roller 3, is connected to a retaining ring 50 attached to a groove 3C provided on the shaft 3a, and a washer 51. The cylindrical compressed coil spring 522 is pressed by a member 55 against the end surface 3d of the gear 3b fixed to the rotating shaft 3a via a friction member 54 made of felt. With such a configuration, the arm 7 can reliably rotate with the rotation of the rotating shaft 3a.

Next, the operation of this embodiment will be explained.

First, during transmission, the sheet feed roller 5 is rotated clockwise, the transmission document feed roller 24 and the recording paper feed roller 6 that are in contact with it rotate, and the auxiliary roller 5 also rotates. When the transmission document 21 is inserted face up through the document insertion slot 30, it is conveyed while being held between the transmission document feed roller 4 and the auxiliary roller 5, and then passed through the guide member 31 between the transmission document feed roller 4 and the sheet feed roller 3. The thermal recording head 14 and the flat platen 1 are guided by the guide members 32 and 33.
The paper will be ejected through the space between 3 and 3.

In this embodiment, the transmission document 21 is not completely ejected from the main body of the apparatus, but the user waits until the end of transmission before ejecting the document. When conveyed along such a route, the transmission document 21 is exposed to the light source 1 at the reading position 17.
6 and the reflected light passes through the lens 18 and forms an image on the light receiving surface of the image sensor 19, thereby reading the transmission original 21. Here, as the sheet feed roller 3 rotates clockwise, the arm 7 also rotates clockwise).
K rotation, and the planetary gear 8 and the gear 10c of the recording paper guide roller 10a are disengaged, so the recording paper guide rollers 10a and 10b do not rotate, and the thermal recording paper 22 is not conveyed.

Next, during reception, the sheet feeding roller 3 is rotated counterclockwise, the arm 7 is also rotated counterclockwise, and the arm 7 is also rotated counterclockwise. The planetary gear 8 meshes with the gear 10a, and the recording paper guide rollers 10a, 10
b is driven to convey the thermal recording paper 22. This heat-sensitive recording paper 22 is attached to a recording paper guide member 54. The paper is fed through the cutter 35, between the sheet feed roller 3 and the recording paper feed roller 26, through the guide member 33, between the thermal recording head 14 and the flat platen 13, and heated by the heat generating section 14a. recording is performed. After the recording is completed, the cutter 35 operates, and the sheet feeding roller 23 rotates until the thermal recording paper 22 is released from the recording paper feeding roller 6. At this time, the leading edge of the thermal recording paper 22 to be recorded next is also conveyed and held between the sheet feed roller 3 and the recording paper feed roller 6, but when the next mode is transmission, Since the sheet feed row 23 rotates in the direction of pulling the thermal recording paper 22 back, there is no problem.

According to the embodiment described above, the paper feed roller for reading and the paper feed roller for recording are integrated into one sheet feed roller 2.
3, and by using a simple planetary gear 8 mechanism, the thermal recording paper 22 will not be fed during transmission, and the transmitted document 21 will not be fed during reception, and the device can be easily operated. Highly reliable.

In addition, since a belt is not used in the power transmission mechanism, the mechanism that constitutes the conveyance path for the transmission document 21 and the thermal recording paper 22 is simplified in the entire apparatus, reducing manufacturing costs and improving reliability. There is an effect that it can be done. In addition, since the transmission document 21 is inserted face up, there is also the effect that there is no discomfort when using it.

In this embodiment, the reading is performed by illuminating the transmission document 21 with the light source 16 and focusing the reflected light on the light receiving surface of the image sensor 19 through the lens 18. , these light sources 161 lenses 18.
Instead of the image sensor 19, a contact type image sensor or the like may be used.

FIG. 3 is a cross-sectional view of a main part of a facsimile machine for transmitting and receiving functions according to another embodiment of the present invention.

In FIG. 3, the same parts are denoted by the same numbers as in FIG. 1. This facsimile machine for transmitting and receiving functions has the conveyance path for the transmitted original and thermal recording paper as shown in FIG. The paper is automatically ejected by its own weight.

According to this embodiment, since the thermal recording paper 22 is automatically ejected, there is an advantage that it is also possible to automatically receive information without an operator.

〔Effect of the invention〕

As described in detail above, according to the present invention, it is possible to provide a facsimile device capable of transporting a transmission document and recording paper with a single driving source, has a simple structure, and is highly reliable. .

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a main part of a facsimile machine for transmitting and receiving according to an embodiment of the present invention, FIG. 2 is a detailed cross-sectional view of the vicinity of the rotation axis of the sheet feed roller in FIG. 1, and FIG. FIG. 7 is a sectional view of a main part of a facsimile device for both transmitting and receiving functions according to another embodiment of the invention. . 1...Step motor 3...Sheet feed roller 3a...Rotary shaft 3b...Gear 4...Transmission original feed roller. 6... Recording paper feed roller rough... Arm 8... Planetary gears 10a, 10b... Recording paper guide roller 13...
Flat platen 14...thermal recording head 17...reading position 19...image sensor 21...transmission original 22...thermal recording paper. ,-\\\\,

Claims (1)

[Claims] 1. In a sending/receiving facsimile machine that is capable of transporting original documents and recording paper by a single drive source provided in the main body of the device, there is a flat platen fixed to the main body of the device, and a direction in which the flat platen is pressed. A recording head that is movably energized, a reading element that can read the reading position of the transmitted original that is between the recording head and the flat platen, and a recording head that is driven by a drive source in both forward and reverse directions. While the document to be sent is held between the rotatable sheet feed roller and this sheet feed roller,
rotatably supported by a sending document feed roller capable of conveying the sheet between the flat platen and the recording head, and the other end of an arm rotatably provided around the rotation axis of the sheet feed roller; a planetary gear that meshes with a gear fixed to the rotating shaft; a pair of recording paper guide rollers to which the rotation of the planetary gear is transmitted when the recording paper is conveyed;
The recording paper feeding roller is capable of conveying the recording paper coming out of the recording paper guide roller between the flat platen and the recording head while holding the recording paper between the sheet feeding roller and the recording paper guide roller. A facsimile machine for sending and receiving.