JPS63176234A - Paper feeder for facsimile telegraphy - Google Patents

Abstract

PURPOSE:To draw out originals simply without damages by providing a one-way clutch capable of rotating a paper supply roller in the direction of sending the originals between the paper supply roller and its drive shaft. CONSTITUTION:An one-way clutch 22 is attached to a drive shaft 21 and a paper supply roller 15 is attached to a rotary sleeve 26 coupled with said clutch to be rotated in the direction of sending originals. During the feed of originals said roller 15 idles relative to the drive shaft 21 through the one-way clutch 22 and an auxiliary roller 28 idles relative to a pulley 31 together with a rotary shaft 29. On the way of original transmission, when the original is pinched between said roller 15 and a paper supply guide 13 to stop the transmission an image sensor 16 is moved upward to release the original from the pinch between said sensor and an image sensor roller 17 so that the original can be easily drawn out without damages by being pulled from the outlet side.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a facsimile paper feeding device.

2. Description of the Related Art Conventionally, as shown in FIG. 7, a facsimile paper feeding device has been used to insert a document P onto a paper feeder id 41, pinch the document P between a paper feeder roller 42, and feed the paper. Generally, the document P is sent between the image sensor 43 and the image sensor roller 44 by rotating the roller 42, the document is sent out by the rotation of the image sensor roller 44, and the document is sent out from the discharge port 46 by the discharge roller 45. is known for. In a compact type facsimile, the paper feed roller 42 presses down the document P from above;
It is known that among the image sensor 43 and the ejection roller 45, the paper feed roller 42 and the ejection roller 45 are fixedly installed in a lower case, and only the image sensor 43 is installed in an upper case that can be opened upward.

Problems to be Solved by the Invention However, in the configuration of the above-mentioned compact type facsimile machine, if transmission is stopped with the document P straddled between the paper feed roller 42 and the discharge roller 45, the document cannot be removed unless these rollers are disassembled. There was a problem. Further, when each roller is rotated in the opposite direction, there is a problem in that the document gets caught up in the document.

SUMMARY OF THE INVENTION In view of these problems, it is an object of the present invention to provide a facsimile paper feeding device that can easily take out a document even when the document stops between the rollers.

Means for Solving the Problems In order to achieve the above object, the present invention pinches a document between a paper feed guide and a paper feed roller, rotates the paper feed roller to feed the document, and rotates a discharge roller. A facsimile paper feeding device that is driven to send out a document from an ejection port is characterized in that a one-way clutch is interposed between the paper feed roller and its drive shaft to freely rotate the paper feed roller in the document feeding direction. .

Function Since the present invention has the above-mentioned configuration, even if transmission is stopped with the document being pinched between the paper feed roller and the paper feed guide, the paper feed roller is free to rotate in the direction in which the document is pulled out toward the ejection port. Therefore, the document can be easily pulled out without damaging it. Note that the ejection roller may have the same configuration as the paper feed roller, but since the ejection roller has the function of guiding the original toward the ejection port rather than the other side when the original is driven to be transported, It is sufficient to simply provide a gap large enough to facilitate the extraction of the original document.Embodiments Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 6.

First, the schematic structure will be explained with reference to FIG. 1. 1 is a paper feed guide, 2 is a paper feed roller, and the document P inserted on the paper feed guide 1 is transferred between the paper feed guide 1 and the paper feed roller 2. As the paper feed roller 2 rotates, the paper is separated by the suppression plate 3 and sent between the image sensor 4 and the image sensor roller 5. The submitted manuscript is
The content of the document is pressed against the image sensor 4 by the image sensor roller 5 and transmitted by the image sensor 41, and the transmitted document is sequentially sent out by the rotation of the image sensor roller 5, and then sent from the discharge lower by the discharge roller 6. A one-way clutch is disposed on the paper feed roller 2 so that it can freely rotate in the direction in which the document is fed out, and a one-way clutch is disposed on the paper feed roller 2 so that it can freely rotate in the direction in which the document is fed out. During this period, even if the ejection roller 6 stops, the original P
A gap is formed so that it can be easily pulled out. Further, a step 9 is formed below between the discharge roller 6 and the discharge lower, so that the document P is not caught when each roller is reversed.

Next, a specific example of the configuration of the paper feed roller portion will be described with reference to FIGS. 2 to 6. Reference numeral 11 denotes a 7-axis +7 body case, and a document insertion slot 12 is opened on the negative side thereof. A paper feed guide 13 is arranged with a gentle slope toward the back from the document insertion port 12, and a document insertion tray t is mounted thereon so as to be able to protrude from the document insertion port 12.

At the upper part of the front end of the paper feed guide 13, there is a paper feed roller 1.
5 is arranged, and further in front of the paper feed roller 15 (in this case, an image sensor 16 and an image sensor roller 17 are arranged so that the document fed by the paper feed roller 15 passes between the contact portions thereof. The image sensor roller 17 is configured to be driven by a drive motor 18 via a belt 19, and the image sensor roller 17 and the drive shaft 21 of the paper feed roller are decelerated via a gear train 20. The drive shaft 21 has a ball 23 that moves around the outer peripheral surface of the drive shaft 21 and a cam surface 2 that engages with the ball 23, as shown in FIG.
A one-way clutch 22 consisting of a ring 25 formed on the inner circumferential surface of the paper feed roller 15 is attached to a rotating sleeve 26 connected to the one-way clutch 22, and the paper feed roller 15 is attached to a rotating sleeve 26 connected to the one-way clutch 22. It is said to be rotatable. Further, a swing bracket 27 is fitted to the drive shaft 21 so as to be swingable, and a shaft 29 of an auxiliary U-ra 28 is rotatably supported at the end of the swing bracket 27. A pulley 30 fitted and fixed to the drive shaft 21 and a pulley 31 rotatably fitted to the rotation shaft 29 are connected to each other by a belt 32, and a fixed sleeve 33 fixed to the rotation shaft 29 and the pulley 31 are connected to each other by a belt 32. 3
A compression spring 34 is interposed between the one-way clutch 3 and
5 are configured. Furthermore, a compression spring 38 constituting a one-way clutch 39 is also interposed between a ring 36 fixed to the drive shaft 21 and the swing bracket 27,
When the drive shaft 21 rotates in the normal direction in the document feeding direction, it is free to rotate, and when it rotates in the reverse direction, it transmits rotational force to the swing bracket 27 and lifts up the swing bracket 27.

In the above configuration, the drive motor 18 is stopped with an appropriate angle reversed, and the image sensor roller 17, gear train 20. The swing bracket 27 is in a top-up state via the drive shaft 21 and the compression spring 38. In this state, when a document is inserted, the leading edge of the document passes between the paper feed side 13 and the auxiliary roller 28, and the document passes through the paper feed roller 21.
It is inserted until it touches 5. Next, when the transmission switch is turned on, the drive motor 18 rotates forward, the image sensor roller 17 and the drive shaft 21 rotate forward, and the swing bracket 2
7 rotates until the auxiliary roller 28 comes into contact with the document. In this way, the document is transferred to the paper feed roller 1 by the rotation of the drive motor 18.
5 and the auxiliary low that rotates in conjunction with this? It is sent toward the image sensor roller 17 at 28 . Further, at this time, the original is separated into single sheets between the paper feed roller 15 and a pressing plate (not shown). That is, if the friction coefficient between the paper feed roller 15 and the original is μr, the friction coefficient between the press plate and the original is μb, and the friction coefficient between the original is μp, then the paper feed is set as μr>μb>μm]. Only the original that is in contact with the roller 15 is sent out, and the original that overlaps that original is stopped by the suppression plate. Note that these paper feed rollers 15 and auxiliary rollers 28
The feed speed by the image sensor roller 17 is one half of the feed speed by the image sensor roller 17. When the leading edge of the document reaches between the image sensor roller 17 and the image sensor 16, the document is held between them and is sent by the rotation of the image sensor roller 17, and the content of the document is transferred to the sensor 16 by the electric sensor 16. converted into a signal and transmitted. On the other hand, during this document feeding, the paper feed row 215 is idle relative to the drive shaft 21 via the one-way clutch 22, and the auxiliary row 228 is idle relative to the boot 931 together with the rotating shaft 29.

Thereafter, when there are no originals left and the transmission is completed, the drive motor 18 is reversed by a predetermined angle, and the swing bracket 27 is stopped in a lifted up state, waiting for the next transmission.

In addition, if the transmission stops while the document is being transmitted while the document is being pinched between the paper feed roller 15 and the paper feed side 13, the image sensor 16 is moved upward and the image sensor roller 17 When the original is released from the clamping pressure between the originals and the original is pulled out from the ejection port side, the paper feed roller 15 is rotatable in the original feeding direction, so the original can be easily pulled out without damaging the original. It is.

Effects of the Invention According to the 7-axis paper feeding device of the present invention, even if transmission is stopped with the document being pinched between the paper feed roller and the paper feed guide as described above, the document cannot be transferred to the ejection port side. Since the paper feed roller can rotate freely in the drawing direction, the document can be easily drawn out without damaging it.

[Brief explanation of the drawing]

Figure 1 is a schematic configuration diagram of an embodiment of the present invention, Figures 2 to 6
The figures show an example of the specific configuration of the paper feed roller portion, FIG. 2 is a side view of a longitudinal section, FIG. 3 is a plan view of a partially cutout portion, and FIG. 4 is a partially cutaway perspective view of the main part. Fig. S is a cross-sectional plan view of Fig. t1S4, Fig. 6 is a partial sectional view taken along the line X--X of Fig. 5, and Fig. 7 is an explanatory diagram of a conventional example. 2.15... Paper feed roller' 6...
・・・・・・・・・・・・・・・Discharge roller 7・・・・・・
・・・・・・・・・・・・・Discharge port 21・・・・・・・
・・・・・・・・・・・・Drive shaft 22・・・・・・・・・
・・・・・・・・・One-way clutch P・・・・・・・・・
・・・・・・・・・Manuscript. 6 Patent Attorneys: Toshio Nakao (1 person) Figure 1 Figure 7 Figure 2 Showa Figure 3 η

Claims (1)

[Claims] In a facsimile paper feeding device, the document is pinched between the paper feed guide and the paper feed roller, the paper feed roller is driven to rotate to feed the document, and the ejection roller is driven to rotate to send out the document from the ejection port. A facsimile paper feeding device characterized in that a one-way clutch is interposed between the drive shaft and the drive shaft to freely rotate a paper feeding roller in the document feeding direction.