JPS5817044A - Paper feeder - Google Patents

Abstract

PURPOSE:To enable the use of a device irrespective of the presence of perforations and to improve general-purpose properties and maneuverability, by constituting a feeder for a duplicating device such that a sprocket wheel for a perforated paper, a feed roller, and a press roller are switchably mounted. CONSTITUTION:If moved to a perforated paper side with a lever 5 operated, projections 3a on a sprocket wheel engage perforations in the perforated paper. Then, a gear 9 gears a gear 11, and the perforated paper is conveyed with the sprocket wheel 3 turned. Then, a gear 10 for a feed roller 10 does not gear. If moved to a non-perforated paper side with the lever 5 operated, the feed roller 6 moves to the side of a paper guide plate and a press means 8, the sprocket wheel 3 is detached, and the paper is held between the nip formed by the feed roller 6 and the press roller 8. Then, the gear 10 gears a drive gear 11, and the gear 9 is released from gearing. This permits the use of a device irrespective of the presence of the perforations and the improvement of general- purpose properties.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a paper feeding device such as an unexploded FIA #i, a printer that prints on printing paper having a feed hole or a printing paper that does not have a feed size, a 7-axis 2-speed copying machine, and a copying machine.

Conventionally, there are two types of printing paper: those that have a feed size and those that do not have a feed hole.The former is fed by interlocking the feed size of the printing paper with the protrusion of a sprocket wheel or tractor, and the latter is fed by a paper feed roller. He was feeding the paper by holding it in the paper holding device. Due to the difference in printing paper, it was not possible to feed these using the same paper feeding device, which was rare. In the case of printing paper that has a large feed, the feed force is obtained from the sprocket wheel that engages with the feed hole, so the feed blade cannot be received from the paper feed roller and the paper presser, so the feed force is reduced to 0%. This is because -1 cannot be achieved if the printing paper is caught firmly in the projection of the sprocket wheel when inserting or feeding the printing paper. In this case, it is necessary to release the presser tube so that it does not receive the feed force from paper feed #7a-9.On the other hand, in the case of printing paper that does not have a feed hole, the protrusion of the tin rocket wheel when inserting the printing paper Objects become obstacles and malfunction.

In this case, the sprocket wheel must be removed from the path of the printing paper. In this way, the paper feeding devices for printing paper with a feed size and printing paper without a feed hole are different, and either they are completely different devices, or
A major disadvantage is that switching must be performed by deleting or excluding a part. Moreover, this switching was extremely difficult and painful for the user.

The present invention eliminates such drawbacks, and its purpose is to provide the same model with a paper feeding device that feeds printed paper having a feeding hole and a paper feeding device that feeds printed paper that does not have a feeding hole, and to enable one-touch operation. To provide a paper feeding device that is highly versatile and easy to use regardless of the type of paper by making the paper feeding device switchable.

The present invention will be explained in detail below based on Examples.

Printing paper KFi Normal printing paper 1 with feed size as shown in Figure 1
As shown in FIG. 2, there is a printing paper 2 that does not have a feed hole. FIG. 5 shows an embodiment of the paper feeding device of the present invention for feeding these printed sheets. s and s' are sprocket wheels for feeding the printing paper 1 that have feed holes, and have protrusions Sa and 5 in the circumferential direction.
The printing paper 2, which does not have a 0-th order feed hole, is fed by aligning the a'fC feed holes with each other.The printing paper 2 that does not have a feed hole is fed by the paper feed roller 6 and the paper pressing means 8. The shaft 74C is fixed to the 6-piece shaft 7 and rotatably attached to the s'b, sb' of the 7-shaft lever 5. The shaft 74C has teeth 31110 fixed to it and rotates by receiving power from the drive 11iJl[11. Along with this, the paper feed Q a --) 6 rotates and feeds the printing paper 1 that does not have a feed size. Lever 5Klri, dowel 5 (1,
5+1', 12a, 12a' of frame 12
is rotatably mounted on the shaft. Also, 50,5θ' of lever 5
and spring 1 between 12b and 12b' of frame 12! ! ,
15' is mounted, and by moving 5C of the lever 5 back and forth, a spring force is applied so that the lever 5 is stabilized in the 2nd position.

Next, Fig. 4, Fig. 5, and Fig. 6 are schematic side views of the levers 5 and 6, which show the state in which the printing paper is inserted. The tin rocket wheel 5.5' is set in the position of:
In between, the sprocket hole and protrusion! ka, (!ia')
occlusion. At this time.

The paper feed row 26 and the presser means 8#i are far apart, and the printing paper 1 having a large feed does not receive any power from this.
The figure shows a printing paper 2 that does not have a feed hole inserted and the paper feed roller 6 is moved to the position of the lever 5ijB.
ij, the paper is fed by being pressed by the presser means 8 and holding the printing paper 2 which does not have a feed size at the gate. At this time, sprocket wheel 5, (JS')j, a, paper presser cover 14
4. Move the allFis lever 5 as shown in Fig. 4.
This figure shows the state shown in FIG. 5, which is sected to an intermediate position C, which particularly facilitates the insertion of printing paper 1 having a large feed.

This is because the one-sheet feed/roller 6 and the paper presser means 8 are separated, and the tin rocket wheel 3s ('') and the paper presser cover 14 are also separated, so that the AK printing paper can be inserted by hand.

Next, the driving method will be explained using schematic side views of FIGS. 7, 8, and 9. FIG. 7 is a diagram showing the driving section in the state shown in FIG. 4. A gear wheel 9, set in the position of the lever 5 and rotating synchronously with the sprocket wheel 5.5' (shown in FIG. 5), meshes with the drive wheel 11.

Power is obtained from the nine gear drive gear 11 to rotate the tin rocket wheel 3°5'. At this time, the lever 5Fi dowel 5d, which is not engaged with the driving gear 11, is rotated to the positions (A, B, (!) as shown in FIGS. 4, 5, and 6) as a fulcrum. A spring 15 is mounted on the lever 5e and receives a force in the direction of the arrow.Therefore, the lever 5tim is securely set at the position of the lever 5tim, and the spring 11 [will not move unless a resisting force is applied from the outside]. I can't do it, it's 5fF
It is a paper cutter that cuts i-printed n-circle printed paper. FIG. 8 is a diagram showing the driving section in the state shown in FIG. 5 described above. Set the n1 paper feed roller 6 (fifth) to the lever 5FiB position.
The gear 10 that rotates in synchronization with the drive gear 11 (shown in the figure)
bite with. Gear 10Fi drive Il! A force is obtained from 1J111 to rotate the paper feed roller 6. At this time, the drive gear 11 and the gear 9 are not engaged. The lever 5 is a spring 13
Since it receives a force in the direction of the arrow from
It is a figure which shows the drive part in the state of a figure. 5 levers C
Cent n, gears 9 and 1 in position! a11110 is
The tin wheel 3.6' (shown in FIG. 3) and the paper feed roller 6 (the fifth
II'i (as shown in the figure) can be freely rotated, and the printing paper can be easily centered.

Although the embodiments of the present invention have been described in detail above, the great effect of the present invention is that the same model can be equipped with a paper feed device for printing paper with a feed hole and a paper feed device for printing paper without a feed size, making it easy to use. Any type of printing paper can be used with simple switching operations. When inserting the printing paper, the sprocket wheel intermediate paper feed a-2 is released from the drive unit and becomes freely rotatable, making it very easy to insert the printing paper. In addition, the paper presser lever that securely inserts and attaches the printing paper having the feed size to the tin zero-butt wheel can reduce the number of parts required for bending the frame and the like. As described above, the present invention can provide a paper feeding device with many effects.

[Brief explanation of the drawing]

FIG. 1 shows a printing paper with a feed size, and FIG. 2 shows a printing paper without a feed size. FIG. 5 is a schematic diagram showing an embodiment of this estrus. 4, 5, and 6 are schematic side views showing the state in which printing paper is inserted, and FIGS. 7, 8, and 9 are schematic side views of the drive unit. 1-Printing paper with a feed size 2-Printing paper 5 without a feed size (5')--Tin 0-butt wheel 5...Lever 6--Paper feed roller 8...Paper pressing means
! - Gear 10...Gear 11 Drive tooth single 12...Frame 15... (ne 14-...Paper presser cuck)- Applicant Shinshu Seiki Co., Ltd. Representative Patent Attorney Mogami

Claims (5)

[Claims] (1) In order to feed the printing paper that has a feed hole, it consists of a sprocket wheel that has protrusions in the diurnal direction, a paper feed roller that feeds the printing paper that does not have a feed size, and a paper presser. paper feeding device. (2) The printing paper is fed only when the sprocket wheel engages with either one of the paper feed rollers or when the sprocket wheel engages with either one of the paper feed rollers. (3) The paper feeding device according to claim #S1, wherein the sprocket wheel and the paper feeding roller are pivoted on a lever that rotates slightly, and the front aC lever is controlled to two positions by a spring. (4) The paper feed f&ge according to claim 1, wherein either one of the sprocket wheel and the paper feed roller is driven by a driving means. (5) The paper feeding device according to claim 1, wherein the paper presser cover that presses and presses the printed paper with a large feed speed r) is fixed.