JPH04241566A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To easily execute the paper jamming cancel/exchange of recording paper sheets at the facsimile equipment. CONSTITUTION:A platen 4 is arranged in a casing 1, to which a cover member 2 is fitted to be freely opened/closed, and near this platen 4, a recording head 7 extending along the axial direction of the platen 4 is arranged to be freely close/separate from the platen 4. Then, a guide roller 21 is provided to guide the conveyance of a recording paper sheet K in the prescribed direction to the platen 4 and recording head 7, and guide devices 23, 24 and 25 to convey the recording paper sheet K in cooperation with the guide roller 21 are provided to be freely close/separate to the guide roller 21. At this facsimile equipment, an engaging member 3 is formed at the cover member 2, and a rotational member 14 is provided to be rotated with the opening/closing of the cover member 2 while being engaged to this engaging member 3. Between the rotational member 14 and the guide supporting devices 23-25, a release member 28 is provided to release these guide supporting devices 23, 24 and 25 from the guide roller 21 and with the rotation of the rotational member 14, the release member 28 is operated.

Description

[Detailed description of the invention]

0001

FIELD OF INDUSTRIAL APPLICATION This invention relates to facsimile machines, and more particularly to improvements in facsimile machines in which a recording head can be moved toward and away from a platen, and a guide auxiliary device can be moved toward and away from a guide roller. Regarding.

0002

[Prior Art] Conventionally, when recording on recording paper in a facsimile machine, the recording paper was inserted between a press-contacted platen and a recording head, and the recording head was driven with a predetermined recording signal to record. . In such facsimile machines, if the recording head remains in pressure contact with the platen, it will be extremely difficult to clear paper jams or replace recording paper, so a recording head release mechanism that moves the recording head toward and away from the platen is required. was set up. However, since this release mechanism is manual, the operator must operate the release lever each time the recording paper is replaced.
The release lever had to be returned to its original position, making the replacement work and the like troublesome. Therefore, the applicant first
A facsimile machine was proposed (Japanese Patent Application No. 2-29294) in which the recording head is automatically separated from the platen when the cover member is opened, making it easy to change the recording paper.

0003

[Problems to be Solved by the Invention] However, depending on the type of facsimile machine, after the recording head records on the recording paper, the recording paper is conveyed in the opposite direction to the direction in which the recording head was recording, and then ejected from the ejection port. There is. In such a case, a guide auxiliary device presses the recording paper against a guide roller to reverse and convey the recording paper. Even when replacing the recording paper in such a facsimile machine, the guide roller and the guide auxiliary device remain in pressure contact, so the release lever that releases the guide roller and the guide auxiliary device is manually operated in the same manner as described above. Recording paper was replaced, etc. In this case, as in the case described above, the work of replacing the recording paper is troublesome.

The present invention has been made to solve the above-mentioned problems, and when a paper jam is cleared or when recording paper is replaced, the platen and the recording head are brought into contact with each other and the guide roller and the guide auxiliary device are brought into contact with each other. It is an object of the present invention to provide a facsimile apparatus in which the facsimile apparatus and the facsimile apparatus are connected to and separated from each other, and recording paper can be easily exchanged.

[0005]

[Means for Solving the Problems] In order to solve the above problems, the present invention includes a platen disposed inside a casing to which a cover member is attached so as to be openable and closable, and a platen disposed near the platen in the axial direction of the platen. A recording head extending along the platen is disposed so as to be able to move toward and away from the platen, and a guide roller is provided for guiding the conveyance of the recording paper in a predetermined direction with respect to the platen and the recording head. In a facsimile machine in which a guide auxiliary device for conveying paper in cooperation with the guide roller is provided so as to be movable toward and away from the guide roller, an engaging member is formed on the cover member, and the engaging member is engaged with the engaging member. A rotating member is provided which rotates as the cover member is opened and closed, and a release member is provided between the rotating member and the guide auxiliary device to release the guide auxiliary device from the guide roller. The release member is configured to operate as the release member rotates.

[0006]

According to the present invention, when the cover member is opened and the engaging member is moved, the rotating member rotates. The rotation of this rotating member causes the recording head to move away, making it possible to easily replace the recording paper. Further, a release member is operated in conjunction with the rotation of the rotation member, and the operation of the release member causes the guide auxiliary device to move away from the guide roller, thereby facilitating paper jam removal and recording paper replacement.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained below based on the illustrated embodiments. As shown in FIG. 1, a cover member 2 is attached to the upper right front part of a box-shaped casing 1 so as to be openable and closable with one end thereof being a shaft 2a. An engagement pin 3, which is an engagement member, is attached inside the left end of the cover member 2. A cylindrical platen 4 is disposed at the center of the interior of the casing 1, and a rotating shaft 5 rotatably supported on the inner surface of the casing 1 is connected to both ends of the platen 4. A head mounting plate 6 extending along the axial direction of the platen 4 is disposed below the platen 4, and a recording head 7 having approximately the same length as the axial length of the platen 4 is disposed on the upper surface of the head mounting plate 6. It is set up. A guide flange 8 bent upward is integrally formed at both ends of the head mounting plate 6, and a guide groove 9 is formed in the guide flange 8 to be engaged with the outer peripheral side of the rotating shaft 5. On the front edge of the head mounting plate 6,
Two locking pieces 11 are formed with hooks 10 formed at their tips. By engaging the hook 10 of the head mounting plate 6 with the holding plate 12 formed protrudingly on the inner bottom surface of the casing 1, the guide groove 9 of the guide flange 8 can freely swing in the vertical direction along the rotation axis 5. It is said that A biasing spring 13 is disposed on the lower surface side of the head mounting plate 6, and the biasing spring 13 urges the head mounting plate 6 upward to press the recording head 7 against the outer periphery of the platen 4.

A release cam 14, which is a rotating member whose outer periphery is in contact with the upper surface of the head mounting plate 6, is loosely fitted to the rotating shaft on the front side of the platen 4 so as to be freely rotatable. As shown in FIG. 1(B), the release cam 14 is formed with an engagement groove 15 that extends in a direction that does not match the locus of movement of the engagement pin 3 of the cover member 2. A cam portion 16 formed at a long distance from the rotating shaft 5 is formed on the left outer periphery of the release cam 14, and when the release cam 14 is rotated and the cam portion 16 is in contact with the head mounting plate 6, The head mounting plate 6 is spaced apart from the platen 4.

[0009] On the left side of the casing 1, a discharge roller 21, which is a guide roller, is arranged parallel to the platen 4 and has approximately the same length as the platen 4. A rotating shaft 22 is inserted through the center of the discharge roller 21, and both ends of the rotating shaft 22 are
Each is rotatably supported on the side wall of the casing 1. A substantially semicircular paper guide 23 serving as a guide auxiliary device is disposed so as to cover the discharge roller 21 . As shown in FIG. 2, two window holes are formed in the upper part of the paper guide 23, and the presser roller 24 is inserted through these window holes.
The lower side of the paper guide 23 projects toward the inner surface of the paper guide 23 and is rotatably disposed. Similarly, paper guide 23
Two presser rollers 25 are rotatably disposed at the lower arcuate portion of. Bent portions 26 are formed downwardly on both left and right edges of the flat portion 23a of the paper guide 23, and are swingably disposed around a shaft 27. The upper center end of the paper guide 23 is biased in the direction of arrow Y.
One end of a presser roller pressing spring 30 that presses the presser rollers 24 and 25 against the discharge roller 21 is locked. axis 29
The left end upper surface of the paper guide release lever (hereinafter referred to as release lever) 28, which is a dogleg-shaped release member arranged to swing by The upper right end surface of the release lever 28 is arranged so as to come into contact with the center of the lower surface of the head mounting plate 6 (FIG. 1).

A roll of recording paper K is disposed inside the front of the casing 1, and the recording paper K is inserted between the platen 4 and the recording head 7 and between the ejection roller 21 and the paper guide 23. It is designed to be discharged upward. Next, the operation of this embodiment will be explained with reference to FIGS. 3 and 4. In the recording state of the facsimile machine,
As shown in FIG. 3(A), the cover member 2 is closed, and the engagement pin 3 is engaged with the engagement groove 15 of the release cam 14. In this state, the cam portion 16 of the release cam 14 is not in contact with the head mounting plate 6, and the head mounting plate 6 is urged upward by the urging force of the urging spring 13.
The recording head 7 is held in pressure contact with the platen 4. In this state, if the recording paper K is inserted between the platen 4 and the recording head 7, the recording head 7 is driven by a predetermined recording signal, and a predetermined recording is performed on the recording paper K.

On the other hand, since the left arm of the release lever 28 is heavier than the right arm, the release lever 28 rotates in the direction of arrow X1. Due to this rotation, the upper left end surface of the release lever 28 is slightly separated from the lower surface of the paper guide 23. In this state, the paper guide 23 is pulled in the direction of arrow Y1 by the weak biasing force of the roller pressure spring 30, so the press rollers 24 and 25 of the paper guide 23 are pressed against the discharge roller 21. The discharge roller 21 rotates in synchronization with the platen 4, and the recording paper K is conveyed along the inner surface of the paper guide 23.

When removing or replacing a paper jam in the recording paper K of a facsimile machine, by opening the cover member 2, the engaging pin 3 is moved upward together with the cover member 2.
With this movement, the engagement pin 3 pulls up the upper side of the engagement groove 15 of the release cam 14, so the release cam 14 is rotated upward. As the release cam 14 further rotates, the cam portion 16 comes into contact with the upper surface of the head mounting plate 6, as shown in FIG. and separate it from the platen 4.

Furthermore, when the cover member 2 is opened upward, the head mounting plate 6 is lowered as shown in FIG. come into contact with Then, since the contact force of the left end of the release lever 28 is stronger than the biasing force of the presser roller pressing spring 30 of the paper guide 23, the paper guide 23 swings about the shaft 29 in the direction of the arrow X1. This swing causes the paper guide 23 to swing counterclockwise about the shaft 27. Then, the presser rollers 24 and 25 attached to the paper guide 23
separated from As described above, the platen 4 and the recording head 7 are separated from each other, and the ejection roller 21 and the presser roller 2 are separated from each other.
Since the paper sheets 4 and 25 are separated from each other, the recording paper K can be easily replaced.

Next, after the paper jam removal and replacement work of the recording paper K is completed, when the cover member 2 is attempted to be closed, as shown in FIG. 4(A).
As shown in FIG. 3, the engagement pin 3 starts engaging with the engagement groove 15. Further, when the cover member 2 is closed, the engagement pin 3 presses down the lower part of the engagement groove 15, and this pressing causes the release cam 14 to rotate downward. Eventually, the rotation progresses,
As shown in FIG. 4B, the cam portion 16 is released from contact with the upper surface of the head mounting plate 6, and the head mounting plate 6 is moved upward by the biasing force of the biasing spring 13. This upward movement brings the recording head 7 into pressure contact with the platen 4 and maintains it in a predetermined recordable state.

Furthermore, the paper guide 23 is as shown in FIG. 4(A).
As shown in , when the cover member 2 starts to be closed, the left tip of the release lever 28 is in contact with the lower surface of the paper guide 23, so that the paper guide 23 and the presser roller 2 are in contact with each other.
4 and 25 are in a separated state. Further, when the cover member 2 is closed, the head mounting plate 6 is raised as described above, and the release lever 28 is rotated counterclockwise by the weight of the left arm. Then, as shown in FIG. 4B, the paper guide 23 is pulled in the direction of arrow Y1 by the biasing force of the roller pressing spring 30, so the presser rollers 24 and 25 are pressed against the ejection roller 21, and the recording paper K is made ready for transport.

As explained above, during recording, the platen 4 and the recording head 7 are pressed against each other to become ready for recording, and the ejection roller 21 and presser rollers 24 and 25 are brought into pressure contact to become ready for conveyance.

[0017]

As explained above, according to the present invention, when the cover member is opened, the platen and the recording head are separated from each other.
At the same time, the guide roller and presser roller (guide auxiliary device)
Since they are separated from each other, it is easy to clear jams in the recording paper and replace it.

[Brief explanation of the drawing]

FIGS. 1A and 1B are a perspective view of a facsimile machine and a plan view of a release cam according to an embodiment of the present invention.

FIG. 2 is a perspective view of the paper guide, etc. of the above embodiment.

FIGS. 3A and 3B are state diagrams of the above embodiment during recording and when the cover member is opened.

FIGS. 4A and 4B are a state diagram when the cover member of the above embodiment starts to be closed and a state diagram when the cover member is closed.

[Explanation of symbols]

1...Casing 2...Cover member 3...Engagement pin (engagement member) 4...Platen 6...Head mounting plate 7...Recording head 14...Release cam (rotating member) 15...Engagement groove 16...Cam part 21...Ejection Roller (guide roller) 23... Paper guide (guide auxiliary device) 24, 25...
Presser roller (guide auxiliary device) 28...Release lever (
Release member) 30...Roller pressure spring K...Recording paper

Claims (1)

[Claims] 1. A platen is disposed inside a casing to which a cover member is attached so as to be openable and closable, and a recording head extending in the axial direction of the platen near the platen is moved toward and away from the platen. a guide auxiliary device that is provided with a guide roller that is freely disposed and guides the recording paper in a predetermined direction with respect to the platen and the recording head, and that transports the recording paper in cooperation with the guide roller; In the facsimile machine, an engaging member is formed on the cover member, and a rotating member is engaged with the engaging member and rotates as the cover member is opened and closed. A release member is provided between the rotary member and the guide auxiliary device to release the guide auxiliary device from the guide roller, and the release member is operated as the rotary member rotates. facsimile machine.