JPS6293168A - Sheet holding device - Google Patents

Abstract

PURPOSE:To eliminate a paper discharge stacker to aim at miniaturizing a sheet holding device, at reducing the cost thereof, and so forth, and to enhance the storage ability and the take-out ability, by holding only the trailing ends of a recording papers so that a stacking function is provided to a tray. CONSTITUTION:A recording sheet 8 advances leftward as indicated by the arrows. At this time, since an auxiliary roller 11' is separated from a paper discharge roller 11, the leading end of the recording sheet is projected outside of a cover 18. When a recording corresponding to one page is completed, the auxiliary roller 11' is lowered to clamp the recording sheet 8 just before cutting by a cutter 10 while the recording sheet 8 is conveyed by a feed roller 9, and is then cut at the end of the page. Further, when the trailing end of the sheet 8 passes the end point of an outlet lower guide plate 24, the trailing end of the sheet is lowered, and therefore, the sheet 8 is moved rightward when the auxiliary roller 11' is reversed. Further, a solenoid 19 is energized, and when the sheet abuts against a stopper 36, the trailing end of the sheet 8 is held by a retaining roll 35. Finally all recording sheets 8 are held by the retaining roll 35 with one part thereof hanging down outward. Accordingly, it is possible to eliminate a paper discharge stacker to aim at miniaturizing the sheet holding device and it is possible to enhance the storage ability and the take-out ability.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a sheet holding device used in a conveying section and a part of a stacker of a facsimile machine.

■Prior art and its drawbacks Figure 5 shows the configuration of a conventional facsimile machine.
1 is the main body of the facsimile machine, 2 is a document table, 3 is a reading section, 4 and 4' are feeding rollers for the document, 5 is a recording section,
6 is a thermal head, 7 is a recording paper roll, 8 is a recording paper,
9 is a feed roller for recording paper, 10 is a cutter, 11 is a paper ejection roller, 12 is a light source such as a fluorescent lamp, 13 is a mirror,
14 is a condensing lens, 15 is a reading element (CCD), 16 is a document discharge stacker, and 17 is a recording paper discharge stacker.

Here, the document advances to the right on the document table 2 and is read by the reading section 3 between the two pairs of feed rollers 4 and 4', and then is discharged onto the document discharge stacker 16.

On the other hand, the recording paper 8 is recorded in the recording section 5 and then cut by a cutter 10, and then discharged onto a recording paper discharge stacker 17 by a discharge roller 11.

In such a configuration, there is a problem that the apparatus becomes large due to the presence of a paper discharge stacker.

FIG. 6 is a diagram showing another example of a conventional sheet holding device.

FIG. 6(a) shows the configuration after the cutter 10 in FIG. 5. Here, 11' is an auxiliary roller of the paper ejection roller 11, 18 is a cover, 19 is a solenoid, 20 is a presser lever, 21 is a spring, 22 is a fulcrum, 23 is a presser rubber, and other symbols are shown in FIG. Same as described.

As shown in FIG. 6(b), the recorded recording paper 8 advances in the direction of the arrow. 24 is a lower outlet guide plate. At this time, since the auxiliary roller 11' is separated from the lower paper discharge roller 11, the recording paper 8 easily passes between the rollers and comes out of the cover 18 in order from the leading end.

After one page of recording is completed and before cutting by the cutter 10, the auxiliary roller 11' moves downward and contacts the lower paper discharge roller 11 with the recording paper 8 interposed therebetween. The auxiliary roller 11'' also rotates in synchronization with the movement of the feed roller 9 to convey the recording paper 8. At the end of the page, the cutter 10 operates and the recording paper 8
is cut after the first and second sheets.

If there is no paper after the second one, the remaining paper after cutting is conveyed in the opposite direction by the feed roller and returns to the initial recording position, but if there is a paper after the second one, as shown in Figure 6(C), The first and second sheets are conveyed successively.

Note that the conveyance speed of the auxiliary roller 11' is the same as that of the feed roller 9.
Normally, it is more advantageous to slide the paper with the auxiliary roller 11' before cutting, as this creates a gap between the pages.

In FIG. 6(c), 25 is the first recording paper, and 26 is the second recording paper.
This is the first sheet of recording paper.

The rear end of the first sheet is the end A of the lower guide plate 24 where the cutter 10 comes out.
After passing the point, the rear end of the paper moves to position B due to the stiffness and weight of the paper, as shown in (a). Therefore, the conveyance path changes only at the rear end.

Here, the rotation of the auxiliary roller 11' stops when the rear end passes the point A.6 The timing of the stop may be detected by providing a sensor, but the length from the cutting position to the point A can be detected by the auxiliary roller 11'. It may also be measured by counting the number of paper feeding steps by step 11'.

The auxiliary roller 11' may be driven by a separate motor, or may be connected to the motor of the feed roller 9 via a clutch. At the same time as the rotation of the auxiliary roller 11' stops, the solenoid 19 shown in FIG. 6(a) is energized, the presser lever 20 rotates clockwise, escapes from the conveyance path, and the trailing edge of the recording paper 8 comes there and is set at B. (Depending on the timing, even if the rear end of the paper is once on the back of the presser lever 20, the presser lever 2
After being lifted by the clockwise rotation of 0, it moves forward and comes to B).

Regarding the lower roller, we used a roller to improve the conveyance performance of the first sheet, but we used a plate-shaped roller (lower guide plate 24).
In this case, the cost can be reduced.

Furthermore, reliability can be improved if the curl direction (downward curl) of the paper is used to move the trailing edge of the paper from A to B.

Thereafter, the excitation is immediately released, the presser lever 20 rotates counterclockwise around the fulcrum, and the presser rubber 23 at the tip of the presser lever 20
holds the trailing edge of the paper (state (d)).

The second sheet of paper follows, but as shown in Figure 6(d), there is no problem with the advance of the first sheet, and if the trailing edge of the previous sheet is held, the auxiliary roller 11' are separated again as shown in (b), making paper passing easier.

Finally, all of the recording paper 8 is held by the presser rubber 23, and most of it hangs down outside the machine, and the user can pick up the recording paper 8 by pulling the hanging side as necessary. I can do it.

The feature is that by holding only the rear end of the recording paper 8 in this way, a tray stacking function is provided.

The conveying force of the auxiliary roller 11' is sufficient to convey only the topmost paper, and the holding force of the presser rubber 23 is such that the paper does not fall and the second and subsequent papers are not conveyed by the auxiliary roller 11'. It's good to have.

■Purpose The present invention solves the above-mentioned problems, and aims to reduce the size by eliminating the paper ejection stacker, and to improve the retention of original documents after reading and recording paper after cutting. That is.

■Configuration FIG. 1 is a diagram showing the configuration of an embodiment of the present invention.

This is basically an improvement on the system shown in FIG. 6 as a conventional example. In FIG. 6, the auxiliary roller 11' did not rotate in reverse, but in the present invention, it reverses, thereby advancing the paper in the direction of the presser roller 35 and increasing the paper holding length D. , which aims to increase the stability of retention.

The recorded recording paper 8 moves to the left as shown by the arrow. At this time, since the auxiliary roller 11' is separated from the lower paper ejection roller 11, the leading edge of the recording paper easily passes between the rollers and comes out of the cover 18.

After one page of recording is completed and before cutting with the cutter IO, the auxiliary roller 11' lowers and contacts the lower paper ejection roller 11 with the recording paper 8 interposed therebetween.

In synchronization with the movement of the feed roller 9, the auxiliary roller 11' also rotates to convey the recording paper 8. At the end of the page, the cutter 10 operates, and the recording paper 8 is cut after the first and second sheets.

The rear end of the first sheet is the cutter exit lower guide plate 2
After passing the end point 4, the trailing edge of the paper lowers due to the shape of the guide plate, the stiffness of the paper, and its own weight. At this point, the rotation of the auxiliary roller 11' is stopped, and then the recording paper 8 is moved to the right by rotating in the reverse direction. This means that the conveyance path on the rear end side has changed.

When the rear end (right end) of the recording paper 8 comes close to the presser roller 35, the solenoid 19 is activated, the presser foot 035 moves upward, and the rear end of the recording paper 8 comes under it. .

Furthermore, the rear end of the recording paper advances to the stopper 36, and the rotation of the auxiliary roller 11' is stopped. At the same time, the excitation of the solenoid 19 is also released, and the presser roller 35 is lowered by the spring 21 to hold the rear end of the recording paper 8.

Then, the auxiliary roller 11' moves upward and releases the primary recording paper 8.
It becomes easy to pass and take out the paper. If there is no sheet after the second sheet, the remaining recording paper after cutting is conveyed in the opposite direction by the feed roller 9 and returns to the initial recording position, but if there is a sheet after the second sheet, it is conveyed following the first sheet. Ru.

If the conveyance speed of the auxiliary roller 118 is set to be slightly faster than the conveyance speed of the feed roller 9, the auxiliary roller 11 will slide the page before cutting, but since a gap will be created between pages, the conveyance state can be detected, You can avoid the tip of one sheet from getting under the rear end of the first sheet.

Even if the second sheet is attached to the opening, it will be held on top of the first sheet in the same manner as the first sheet.

Finally, all of the recording paper 8 is held by the presser rollers 35, with a portion hanging down outside the machine, and the user can pick up the recording paper 8 by pulling the hanging side as necessary. be able to.

By holding only the rear end of the recording paper 8 in this manner, a tray stacking function is provided.

The conveyance force of the auxiliary roller 11' is sufficient to convey only the topmost recording paper, and the holding force of the presser roller 35 is such that the recording paper 8 does not fall and that the second and subsequent recording papers are carried by the auxiliary roller 11'. It is sufficient as long as it is not transported.

FIG. 2 is an explanatory diagram showing the positional relationship of the paper ejection roller, the lower exit guide plate, the presser foot 20, and the stopper during conveyance of the recording paper, and A to E indicate the intervals between the respective parts.

FIG. 3 is a diagram for explaining the approach and separation of the auxiliary roller in the present invention, in which 27 is a lever, 28 is a belt, 29 is a pulley, 30 and 30' are gears, and 31 is a fulcrum shaft.

When the solenoid 19 is activated, the lever 27 is rotated to the left and the auxiliary roller 11' is lowered.

Further, the rotation of the motor is controlled by a pulley 29 via a belt 28.
It is transmitted to The pulley 29 is integrated with the gear 30 and supports the fulcrum shaft 3.
1, and its rotation is transmitted to a gear 30' fixed to an auxiliary roller 11'.

Here, the auxiliary roller 11' is rotated when the leading edge of the paper is in front of the roller, and the previous paper is not ejected (conveyed), but is held so that it slides and the leading edge of the next paper enters between them. Power·
The device becomes even simpler if the conveying force is set.

FIG. 4 is a diagram showing an example of a device having a stacker for both sending and receiving purposes, in which numeral 32 is a separation roller, and other symbols indicate the respective parts already described.

The feature of this is that a holding section 33 and a pair of auxiliary rollers 34 are used instead of a paper ejection roller on the recording side.

In this way, since the stacker is eliminated, the occupied area is reduced by tilting the document table 2 (improving paper feeding performance).

Further, as described above, the present invention is applicable not only to the recording side but also to the document side or both.

As for the lower roller, a roller is used to improve the conveyance performance of the first sheet, but a plate-shaped roller (used by extending the lower guide plate) may also be used, and in that case, the price can be reduced.

Regarding the movement of the rear end of the recording paper 8 from X to the presser roller 35, reliability can be improved by utilizing the curl direction (downward curl) of the recording paper.

The presser foot may not cover the entire width of the paper, but only the center. In that case, both sides can be used as guides, making it easier to feed the material to the stopper.

In Fig. 1, it is possible to detect whether the trailing edge of the recording paper has passed the point X by installing a sensor, but it is also possible to detect the length from the cut position to the point X by using a stepper motor. , the number of paper feeding steps by the auxiliary roller 11' may be counted instead.

The same applies to the feed amount from point X to stopper 36 (B + D).

The auxiliary roller 11' may be driven by using a roller separate from the feed roller 9, or by using the motor of the feed roller 9 via a clutch.

The presser roller 35 can be raised at any time after the auxiliary roller 11' has lowered and held the recording paper 8, but considering the power consumption of the solenoid 19 and the stability of paper holding, the presser roller 35 can be raised at any time when the rear end of one sheet is on the presser roller. It's better to come near 35.

If the presser rubber 23 shown in Fig. 6 is not in the shape of a roller, it will pinch the recording paper, but in the case of rollers, if the roller is rotated and the trailing edge has passed under the roller, the lowering time will be lower. Any time is fine.

The auxiliary roller 11' may be driven in synchronization and connected with the auxiliary roller 11' (a clutch is required), or may be driven independently to raise the auxiliary roller 11' and release it for the next page.

In addition, in the case of rollers, we can make them rotatable without a drive,
If the auxiliary roller 11' is lowered when it stops, it can be pulled out more easily than when it is pressed down with the presser rubber 23 or the like when taking out. In this case, the paper surface is not rubbed, so there is less dirt and less frictional load.

Here, when E is large, the amount of paper held inside the machine becomes large, sagging is reduced, and the storage safety of received paper, etc. is improved. However, E must be smaller than the minimum size.

In order to increase E without increasing the size of the device (without increasing the distance from the cutter to the auxiliary roller).

■ Increase the forward rotation (discharge direction) speed of the auxiliary roller (transport faster than the transport speed of the feed roller).

■ Make the reverse rotation speed (holding direction) of the auxiliary roller faster than the forward rotation speed.

■ After lengthening D and holding it with the presser roller, let it pass onto the auxiliary roller and feed it with the presser roller until it reaches the - position (however,
(possible only with the roller method), etc.

■Effect As explained above, the present invention aims at downsizing the device.

In addition to lowering the price and reducing the area occupied, the increased storage capacity improves storage efficiency, the use of rollers improves retrieval efficiency, and image quality is protected.6

[Brief explanation of drawings]

FIG. 1 is a diagram showing the configuration of an embodiment of the present invention, and FIG. 2 is an explanatory diagram showing the positional relationship of the paper ejection roller, exit lower guide plate, presser roller, and stopper (-) during conveyance of recording paper. FIG. 3 is a diagram for explaining the approach and separation of the auxiliary roller in the present invention, FIG. 4 is a diagram showing an example of the present invention having a stacker for both transmission and reception, and FIG. 5 is a diagram showing the configuration of a conventional facsimile machine. Fig. 6 is a diagram showing another example of a conventional sheet holding device. 1...Facsimile machine body, 2... Original table, 3... Reading section. 4.4'... For original 5...Recording unit, 6...Thermal head, 7...Recording paper roll, 8...Recording paper. 9...Recording paper feed roller, 10...Cutter, 11... Paper ejection roller, 11'
... Auxiliary roller, 12 ... Light source, such as a fluorescent lamp, 1
3... Mirror, 14... Condensing lens. 15...Reading element, 16...Document discharge stacker, 1
7... Recording paper output stacker, 18... Cover, 19
...Solenoid, 20...Press* L/ /<-12
1... Spring, 22... Fulcrum, 23... Presser rubber. 24... Lower exit guide plate, 25... 1st recording paper. 26... Second recording paper, 27... Lever, 28
...belt, 29...pulley. 30.30'... Gear, 31... Fulcrum shaft. 32... Separation roller, 33... Holding part, 34...
・Pair of auxiliary rollers, 35... Presser roller, 36...
stopper. Patent Applicant Ricoh Co., Ltd. Figure 1 n 6... Boomerhead 8... Shugenki 9... 1 #sai Removal roller 11'...Winter I supporter old...Cover 19°゛°Solenoid 21...Bawinter 24'° removal 1,000 p゛4 door λ㎖27...Lever fertilizer...・N round opening 36...Kutoha 1- Fig. 2 Fig. 3 28...Belt 31-・Eight support shafts

Claims (3)

[Claims] (1) In a device that holds a trailing end of a document after reading, recording paper after recording, or both by changing the conveyance path of the trailing end during transportation, an auxiliary roller that can rotate in forward and reverse directions and its driving means; A sheet holding device comprising: a terminal end holding member that can be moved in and out; a control means therefor; a stopper for positioning the terminal end; and a conveyance path such as a guide on the terminal holding side. (2) The sheet holding device according to claim (1), wherein the end holding member is rotatable. (3) The sheet holding device according to claim (2), wherein the end holding member is movable.