JPS59839Y2 - fax machine - Google Patents

Description

[Detailed description of the invention] This invention is a facsimile machine, in particular, clamps the leading edge of paper such as a manuscript or recording paper on the outer peripheral surface of a rotating drum with a single bar extending in the axial direction of the drum. The present invention relates to an improvement in a facsimile machine that is automatically attached to a drum.

In conventional devices of this type, the transmission scan is performed by scanning the light spot of the reading optical system. It was necessary to prevent the image from becoming out of focus.

Furthermore, it can be easily predicted that various inconveniences will occur during recording.

For this reason, in conventional facsimile machines, a method is adopted in which the gap between the anti-slip device and the drum surface is extremely narrowed in the vicinity of the scanning point over the entire axial length of the drum.

With this method, it is difficult to control the accuracy of the gap in proportion to the length of the drum.

The present invention was developed in view of these points, and is used in a facsimile machine that clamps one end of paper such as a manuscript or recording paper on a rotating drum to perform reading or recording scanning. An object of the present invention is to provide a facsimile machine that prevents tampering and the like.

The present invention will be explained below based on the drawings.

2 is a side cross-sectional view showing one embodiment of the facsimile apparatus shown in FIG. 1, and FIG. 2 is an enlarged view of the main part thereof, showing an example of its operation.

The document 1 is placed on the document table 2 regardless of whether it is one sheet or multiple sheets.
placed on top.

The originals 1 are fed one by one by an automatic paper feeding mechanism including a friction roller 3 made of sponge rubber or the like and a rubber tongue 4, and fed to a rotating drum 17 by a drive roller 5 and a pinch loaf 6.

At this time, the leading edge of the document 1 is detected by the detector 16 consisting of a light source and a light receiving sensor, and timing is determined based on this detection signal, and the paper leading edge clamp bar 18 is moved in the direction of the arrow 19 to clamp the document 1 in the clamp groove 20. Clamp the tip of the

Also, 7 is a recording paper wound into a roll (roll recording paper)
Then, the drive roller 11 . It is fed to the pinch roller 12.

Furthermore, the recording paper 7 is moved to a drive roller 11. Vincillo-la 12
The document is then fed through the guide plates 13 and 14 to the drive roller 5 and the pinch roller 6, and thereafter the same operation as the document 1 is repeated.

After the clamp bar 18 clamps the leading edge of the document 1 or the recording paper 7, the drum 17 starts rotating at the main scanning speed, and at the same time the scanner 5 for reading or recording etc.
The moving table 24 on which the drum 5 is placed also starts moving in the axial direction of the drum 17 at the sub-scanning speed.

Here, 54 is a support base extending in the axial direction of the drum 17, and is fixed below the drum 17.

Further, the lower end of the thin plastic film 26 is fixed with an adhesive along the longitudinal direction of the support base 54, and the upper end is disposed so as to always closely or slightly press the outer periphery of the drum 17.

As shown in FIG. 2, this film 26 serves to tightly bring the paper P other than the clamping portion to the outer periphery of the drum 17 immediately before the scanner 55 to prevent it from being stirred, thereby ensuring reliable reading or recording. It is ordered.

Therefore, it is desired that the film 26 is flexible, has a large restoring force against bending, and has abrasion resistance against the sliding of the paper accompanying drum rotation.

In this example, a polyester film with a thickness of about 0.1 mm, which has obtained good results in tests, is used.

Therefore, the tip of the drum 1 is clamped by the bar 18.
The paper P rotating with the drum 7 is subjected to a light sliding force by the film 26 in the direction opposite to the rotation thereof, so that the paper P is brought into close contact with the surface of the drum 17 at the scanning point.

Note that 25 is a guide plate for regulating the free end of the paper P, and 21 is a paper ejection roller.

As described above, the present invention uses a film material to prevent the scanning point from moving, so there is no need for conventional gap management around the outer periphery of the drum, and since the film itself is flexible, paper It has a soft feel to it.

Therefore, the collision noise of the free end of the paper can be reduced, and even when the clamp bar 18 is rotating with the drum without clamping the paper, that is, with the clamp bar 18 protruding from the outer periphery of the drum as shown in FIG. It flexibly responds to this, and produces extremely significant practical effects such as preventing undue force from acting between the film and the clamp bar.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram showing an embodiment of a facsimile apparatus according to the present invention, and FIG. 2 is an enlarged view for explaining the operation of its main parts. 17...Drum, 18...Clamp bar, 20...Groove, 24...Scanning table, 5
5...Scanner, 26...Film, 5
4...Support stand.

Claims (2)

[Scope of utility model registration request] (1) In a facsimile machine in which one end of a sheet of paper is clamped on the outer periphery of a rotating drum with a single bar extending in the axial direction of the drum, a flexible film is attached so that its leading end is on the outer periphery of the rotating drum. 1. A facsimino apparatus, characterized in that the facsimile machine is disposed near a scanning point of the paper so as to be in contact with the outer periphery of the drum along the axial direction of the facsimile machine. (2) The facsimile machine according to claim 1, wherein the flexible film is a plastic film and has high abrasion resistance.