JPS61130157A - Discharge part for paper in facsimile equipment - Google Patents

Abstract

PURPOSE:To facilitate lamination of papers in a stacker, by a method wherein curl is detected at a discharge part for papers by means of the direction of the curl of a paper, and the shape of the curl is changed. CONSTITUTION:A paper 4, unrolled from a record paper roll 10, is cut by record paper cutters 13 and 14. The cut paper is conveyed through shutters 15 and 16, an upper curl sensor 17, and a lower curl sensor 18 from guides 21 and 22 to a discharge roller 3 and is discharged to a stacker 1. A shifting plate 5 is controlled by means of the upper and the lower curl sensors 17 and 18. In the case of the upper curl, at a point of time when the upper curl sensor 17 is actuated, a solenoid 6 is turned OFF to move out the shifting plate 5 from the stacker 1. In the case of the lower curl, the shifting plate 5 is rotated counterclockwise by attracting the solenoid 6 by means of the sensor 18 to bring the shifting plate into a position shown by a broken line, and an angle at which the forward end of the paper collides is decreased to stack the papers without crumpling the paper into a ball.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a facsimile recording paper ejecting section.

■Prior art Figures 2(a) and 2(b) are explanatory diagrams of the faun situation in the stacker when the paper is curled downward at the conventional recording paper ejection unit, where 1 is the stacker and 2 is the tension roller. , 3 is a discharge roller, 4 is paper, and 5 is a switching plate.

Here, the paper 4 is connected to the tension roller 2 and the ejection roller 3.
It is housed in the stacker 1 through the space as shown by the solid line. The second and subsequent sheets of paper hit the previous stacked paper at an angle of β. If the angle of β is small, it will be stacked on top, and the angle of contact will decrease with α, but
Strong lower curl.

If it exceeds 90'', the tip will turn to the left as shown in FIG. 2(b) and will eventually curl into a cylindrical shape.

FIGS. 3(a) and 3(b) are explanatory diagrams of how paper is stored in a conventional stacker when the paper is upwardly curled.

Contrary to the case in Fig. 2, when the paper is upwardly curled, the paper 4 is initially accumulated in the stacker 1 as shown in Fig. 3(a), but as the curl becomes large, the Figure 3(b)
As shown in the figure, the paper gets under the previous paper, and when the paper is strong enough, it just pushes out the previous paper, and when it is weak, it curls up into a tube shape.The curled paper is the stacker. When a large amount of paper accumulates in the device, there is no place for the paper to be ejected, and it eventually becomes jammed in the device.

■Purpose The present invention solves the above-mentioned conventional problems, and aims to provide a discharge section for recording paper, etc. in a facsimile machine that can maintain stacking performance even when the paper is curled upward or downward. be.

■Structure Figure 1 is an embodiment diagram showing the structure of the ejecting section for recording paper, etc. in the facsimile machine of the present invention.
3 is a tension roller, 3 is a discharge roller, 4 is paper such as recording paper, 5 is a switching plate, 6 is a solenoid, 7 is a fulcrum of the switching plate, 8 is a spring, and 9 is a stopper.

This allows stacking performance to be maintained against curls in either the up or down direction, and the state of the discharge roller 3 side of the stacker 1 is changed depending on the direction of curl.

In this example, when the paper 4 is curled upward, the switching plate 5 is not used, and when the paper 4 is curled downward, the switching plate 5 is used. Although not shown here, it is assumed that the switching plate 5 and the stacker 1 have a comb-teeth shape.

That is, by suctioning the solenoid 6, the switching plate 5 is rotated counterclockwise to the state shown by the broken line. As a result, Figure 2(a)
As the paper 4 is stacked as shown by the broken line, the contact angle α of the leading edge of the next paper becomes considerably smaller than β, and as shown in Fig.
), it will no longer curl up and will be stacked on top of the previous paper.

On the other hand, if the paper 4 is upwardly curled and the switching plate 5 is protruding into the stacker 1, it will tend to curl as shown in Figure 3(b).
It is better to have the switching plate 5 outside.

FIG. 4 is an embodiment diagram showing the configuration of the receiving side of the facsimile apparatus according to the present invention.

The paper 4 that comes out from the recording paper roll 10 is transferred to a thermal rad 11.
After recording in a recording unit consisting of a feed roller 12 and a feed roller 12, a portion of a cutter consisting of a fixed blade cutter 13 and a rotary blade cutter 14 cuts the image.

Conventionally, the paper was discharged into the stacker 1 by the tension roller 2 and discharge roller 3 in this state.

In this case, there is no problem with stacking if the dimension a in the figure is made sufficiently large, but there is a problem that the device becomes too large.

In the present invention, the cut paper is transferred to the shutter 15.16, the upper curl sensor 17. It passes through the lower curl sensor 18, is sent from the guides 21 and 22 to the discharge roller 3, and is discharged to the stacker 1. In addition, 19.20 is shutter 15
．． There are 16 fulcrum points.

Here, the upper and lower curl sensors 17 and 18 optically detect the curl direction (the amount is more than a certain amount) of the paper 4 by converting it into the movement of the shutter 15 and 16. In the present invention, the switching plate 5 is controlled by this curl sensor. It is something to control.

In FIG. 4, 1 normally tends to cause upward curl, so the downward curl sensor may be omitted, and the solenoid 6 is turned off when the upward curl sensor 17 is activated.

All you have to do is take the switching plate 5 out of the stacker 1.

Further, for example, in the case of a document, the curl direction is not constant, so upper and lower curl sensors may be required, or the switching plate 5 may be controlled with only the lower curl sensor.

FIG. 5 is a diagram showing an embodiment in which a deformation removing mechanism is provided. Here, 23 is a deforming roller, 24 is a belt, 2
5.26 indicates a roller, and the other symbols are the same as those shown in FIGS. 1 and 4.

In this case, since the direction of curl after removing curls may vary depending on the paper, curl sensors are installed in both the upper and lower directions, but depending on the situation, only one direction may be used.

■Effects As explained above, the present invention detects the curling tendency of the paper at the ejection section of the recording paper of a facsimile machine based on the direction of the paper curl, thereby facilitating the stacking of paper in the stacker. It has the advantage that it can be applied to both lower curls.

[Brief explanation of drawings]

FIG. 1 is an embodiment diagram showing the configuration of the ejecting section for recording paper, etc. in a facsimile apparatus of the present invention, and FIGS. 2(a) and (b)
) is an explanatory diagram of the storage situation in the stacker when the paper is curled downward in the conventional recording paper ejection section, Fig. 3 (a)
and (b) is an explanatory diagram of how the paper is stored in a conventional stacker when the paper is upwardly curled, FIG. It is a figure which shows the Example when it has a mechanism. 1...Stacker, 2...Tension roller, 3...Ejection roller, 4...Paper, 5...
Switching plate, 6... Solenoid, 7... Support of switching plate, 8... Spring, 9... Stopper, 10...
Recording paper roll, 11... Thermal head, 12...
Feed roller, 13...Fixed blade cutter, 14...
Rotary blade cutter, 15.16...Shutter, 17.
...Upper curl sensor, 18...Lower curl sensor. 19.20...Fulcrum, 21.22...Guide, 2
3... Deforming roller, 24... Belt, 25.
26... Roller Patent applicant Ricoh Co., Ltd. Figure 1 Figure 2 (b)

Claims (3)

[Claims] (1) On the receiving side of the facsimile machine, there is a sensor that detects the curl of the paper sent out from the recording paper roll, recorded on it, and cut, an ejection unit that ejects the sent paper, and a 1. A discharge section for recording paper or the like in a facsimile machine, comprising: a stacker for storing paper; and means for changing the curl shape of the discharged paper on the paper discharge section side of the stacker. (2) The sensor for detecting the curl of the paper has a means for detecting the direction and amount of the curl and changing the shape of the curl of the paper on the discharge section side that stores the paper in the stacker based on the output of the sensor. A discharge section for recording paper, etc. in a facsimile machine according to claim (1), characterized in that: (3) A discharge section for recording paper, etc. in a facsimile apparatus according to claim (1) or (2), characterized in that a curl removal mechanism is provided before a sensor for detecting paper curl. .