JPS60112539A - Paper feeding apparatus of copying machine - Google Patents

Abstract

PURPOSE:To prevent paper clogging by installing a disposing member in the vicinity of the top edge in the paper feeding direction of a paper feeding casstte and disposing paper sheets certainly one by one on paper feeding. CONSTITUTION:After a paper feeding cassette 50 is inserted into a mounting port 30 from the front surface of a copying machine, said copying machine is operated, and a paper feeding roller 11 is turned, and a paper sheet is driven- out towards a disposing member 61 from the paper feeding cassette 50 by the paper feeding roller 11. The driven-out paper sheets are certainly separated one by one by the disposing member 61, and transported laterally in the copying machine, and then original images are printing-fixed onto the paper sheet. Then the paper sheet is discharged onto a paper discharge tray 32.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application] This invention relates to a paper feeding device for a copying machine, and more particularly to a paper feeding device for a copying machine in which the insertion direction of the paper feeding force cent is improved.

[Prior art]

Generally, in a copying machine, paper is transported in the left-right direction inside the copying machine, and the insertion direction of the paper cassette and the paper feeding direction are the same direction. In contrast, the conventional copying machine is configured so that the paper feed cassette can be inserted from either the left or right direction of the copying machine.

However, with such conventional machines, space must be secured on the side of the copying machine to insert the paper feed cassette, which increases the space required to install the copying machine. Therefore, it has the disadvantage that the place where it can be installed is restricted, and the operation of inserting and removing the paper feeding power center from left to right is inconvenient and difficult, making the copying work complicated. This has the disadvantage that the paper in the paper feed capacity center may not be fully sorted during paper feeding, and multiple sheets may be fed at the same time, which may cause a paper jam. Ta.

[Purpose of the invention]

The present invention eliminates the drawbacks of the prior art as described above, and allows the paper feed center to be inserted from the front of the copier, thereby eliminating the need for the front side of the copier originally reserved for operating the copier. This makes it possible to use space effectively to reduce the installation space of a copying machine, and also prevents the possibility of paper jams by ensuring that paper is fanned during paper feeding and only one sheet is fed. However, it is an object of the present invention to provide a paper feeding device for a copying machine that can greatly simplify copying work.

[Structure of the invention]

According to the present invention, a paper feed power center is loaded from the front side of a copying machine in which paper is conveyed in the left-right direction, and a paper feed power center is placed near the leading edge of the paper feed power center in the paper feed direction. It has a configuration in which a separating member is provided to separate only one sheet of paper fed out from the paper.

[Embodiments of the invention]

Embodiments of the invention shown in the drawings will be described below.

FIG. 1 shows a copying machine equipped with a paper feeding device according to the present invention, and this copying machine is equipped with a charging corona around a photosensitive drum 1, which is an image carrier, for charging the surface of the photosensitive drum 1. a discharger 2; a focusing light transmitter (Self-MEC lens) 4 that forms an electrostatic latent image by forming an image on the surface of the photoreceptor drum 1 of the light reflected from the surface of the document (not shown) irradiated by the lamp 3; , a developing device 5 that develops the electrostatic latent image on the surface of the photosensitive drum 1, and a transfer device that transfers the toner image developed by the developing device 5 from the surface of the photosensitive drum 1 to paper. a separation corona discharger 7 that separates the sheet onto which the toner image has been transferred by the transfer corona discharger 6 from the surface of the photoreceptor drum 1, and a separation corona discharger 7 that separates the paper onto which the toner image has been transferred by the transfer corona discharger 6, and the photoreceptor drum 1 after the toner image has been separated. Cleaning devices 8 for cleaning the surface of the photoreceptor drum 1 are sequentially arranged in the vicinity of the photoreceptor drum 1 along the front side in the direction of rotation thereof.

On the other hand, since the paper feed force center 50 is in the state shown in the first figure when inserted, the paper feed roller 11, which has the notch 11a having an arcuate cross section, moves in the direction of the arrow from the rest position shown in the first figure. When the paper feed cassette 50 rotates, it is fed out, and if two or more sheets are fed out at once, a separating member 61 provided near the tip of the paper feed cassette 50 in the paper feed direction removes only one sheet. separated. That is, the separating member 61 is a roller 6 as shown in FIG.
2.63 and tension roller 64 and rotates at the same speed as the paper feeding speed of paper feeding roller 11. An endless belt 65 with a large friction coefficient is provided so as to be able to come into contact with the lower surface of this endless heald 65. When the endless belt 65 is in contact with the endless belt 65, it is configured with a load roller 66 with a small friction coefficient that is driven to rotate by the contact friction force, and two or more sheets of paper are fed in an overlapping state, and the leading edge of the paper is separated. When the uppermost sheet enters the member 61, its upper surface comes into contact with the lower surface of the endless belt 65, so that the endless belt 65 moves the sheet without any problem, but other than the uppermost sheet, i.e. For sheets other than the topmost sheet, the topmost sheet is connected to the endless belt 65 and the load roller 6.
6, the load roller 66 no longer rotates due to the frictional force of contact with the endless belt 65, so the load roller 66 prevents further movement.
As a result, only the topmost sheet is separated and moved.

This paper then passes through the nip roller 13, U-turn roller 12, nip roller 14, loop section paper guide plate 17, secondary paper feed roller (registration roller) 15,
The toner image is guided to the transfer section through the gap between the paper guide plate 19 and the transfer opening paper guide plate 18, and is transferred from the surface of the photoreceptor drum 1 by the transfer corona discharger 6, and then transferred to the photoreceptor drum 1. separated from the surface by a separating corona discharger 7,
After the transferred image is fixed by the fixing device 10 via the paper guide plate 9, it is ejected from the device by the paper ejection roller 16, and there is no need to feed the paper from the paper feed cassette 50. (Place only one sheet of paper into the paper feed guide plate 2.
It is marked □ so that it can be copied even if the paper is fed by 0.

This copying machine has a paper feed cassette 5 on the front as shown in Figure 6.
As shown in FIG. On the left wall 26, in order to press the paper cassette 50 against the right wall 21 and position it accurately, springs 24 and 25 are provided on the machine frame 23 to press the paper cassette 50.

The paper feed center 50 is provided with a handle 58 on the front side, as shown in FIG. , a middle plate 54 on which a stack of sheets is placed on its upper surface, and a separation plate 54 that presses the top edge of the stack of sheets. Claws 55 and 56 are provided, and their heights are determined so that they do not protrude upward from the top surface of the paper feed cassette 50. Therefore, the paper feed roller 11
When the paper feed roller 11 is at the rest position shown in FIG. There is no risk of it getting caught during insertion or removal.

Note that 31 is a document mounting table installed on the top of the copying machine.
32 is an operation section, and 33 is a paper discharge tray provided on the left side of the copying machine.

Next, the operation of the above will be explained.

First, when the paper feed cassette 50 is inserted into the insertion slot 30 from the front of the copying machine, the paper feed roller 11 is at the rest position shown in FIG. 1 and the notch 11a is facing downward. The paper feed force roller 50 is smoothly inserted and positioned without colliding with the paper feed roller 11.

When the copying machine is operated in this manner, the paper feed roller 11 rotates in synchronization with the rotation of the photoreceptor drum 1 at a predetermined timing, and the paper fed out from the paper feed force center 50 is thereby rotated. Only one sheet is reliably separated by the separating member 61, fed, and conveyed in the left-right direction within the copying machine, the document image is transferred and fixed, and then the document is discharged onto the paper discharge tray 33.

FIG. 8 shows another embodiment of the present invention, in which the same members as in the previous embodiment are given the same numbers and their explanations will be omitted.

In this embodiment, retractable rail members 67 are arranged on both sides of the insertion opening 30 of the paper feed cassette 50, and a tray 68 is installed between the rail members 67. By placing the paper cassette 50 on the upper surface of the tray 68 and pushing it forward, the paper cassette 50 can be placed in the proper paper supply position.

In each of the above embodiments, the handle 58 of the paper feed cassette 50 is formed into a plate shape. However, the present invention is not limited to this, and for example, as shown in FIG. Of course, it may be set to 59.60.

〔Effect of the invention〕

By configuring the present invention as described above, it is possible to insert and remove the paper feed cassette by utilizing the space on the front side of the copying machine that is secured from the beginning for operating the copying machine, and It is possible to reliably feed only one sheet of paper from the paper feed cassette in the left and right direction of the copying machine, which is almost perpendicular to the direction in which the paper is inserted, thereby freeing up space on the side of the copy machine for inserting the paper feed cassette. Since there is no need to secure a copying machine, the installation space of the copying machine can be made smaller, and the operation of inserting and removing the paper feed cassette can be done in the same position as the copying operation, which improves operability. It has excellent effects.

[Brief explanation of drawings]

FIG. 1 is a schematic longitudinal sectional front view showing an embodiment of the present invention;
Figure 2 is a cross-sectional plan view showing the inside of the paper feed cassette slot;
3 is a plan view of the paper feed cassette, FIG. 4 is a longitudinal front view of the paper feed cassette shown in FIG. 3, FIG. A perspective view showing the appearance;
FIG. 7 is an enlarged view of the separating member, and FIG. 8 is a schematic perspective view showing another embodiment. 1-------One photosensitive drum 2----Charging corona discharger 3----- Lamp 4--Focusing light transmission body 5--
----Developer 6------Transfer corona discharger 7---Separation corona discharger B---Cleaning device 9, 19---One paper guide plate 10--- --- Constant attachment device 11 = ---- Paper feed roller lla ---
-All cutout parts 12--U-turn roller 13.14--Nip roller 15--
Secondary paper feed roller 16------ Paper discharge roller 17------Loop section paper guider plate 18------One transfer log guide plate 20---One sheet paper feed guide plate 21. 22.2fy---One wall 23------
One machine frame 24.25--Spring 27--Accommodation chamber 30--Insertion slot 31--One document placement table 32-------- Operation unit 33-------・
Paper output tray 51.52.53. -1.-Partition plates 52a, 53a--11 Stopper 5ft---Middle plate 55.56---Separation claw 57-
・-m---Spring 58.59.60---One grip 61
-・--m--Separation member 62.63-----One roller 64...--Tension roller 65--Endless heald 6--Load roller 6--Rail member 68-- −Tray patent applicant Konishiroku Photo Industry Co., Ltd.

Claims (3)

[Claims] (1) A paper feed power center is configured to be loaded from the front of a copying machine in which paper is conveyed in the left-right direction, and a paper feed power center is placed near the leading end of the paper feed power center in the paper feed direction. A paper feeding device for a copying machine, characterized in that it is provided with a separating member that separates only one sheet of paper from being fed out. (2) The handling member has an endless belt that contacts the upper surface of the uppermost sheet, and the endless belt pulls out only the uppermost sheet in the paper feeding direction. Paper feeding device of the copying machine described. (3) The paper feeding device for a copying machine according to claim 1, wherein the paper feeding force cent is positioned toward the leading end in the paper feeding direction where the sorting member is disposed.