JPS58193568A - Transfer paper peeling and conveying device of electrophotographic copying machine - Google Patents

Abstract

PURPOSE:To prevent influence upon a transferred toner image due to the application of an impact to the front end of transfer paper, by providing a transfer paper guiding means for guiding transfer paper separated from the surface of a photoreceptor between a transferring and a conveying means. CONSTITUTION:The transfer paper 3 to which a toner image is transferred by a transfer corotron 6 is conveyed only in contact with the photoreceptor 2. A peeling belt 1 fixed at one end to a fixing member 9 is applied with tension by being fitted to a spring 6 to contact the photoreceptor 2 and a conveying roll 4. The front end of the transfer paper 3 is guided smoothly to a wedgelike guide path 15 consisting of the belt 1 and a conveying guide member 14 fixed to a flank of the transfer corotron 6 and sent to a conveying member 18 through the conveying roll 4. Therefore, the front end of stiff transfer paper never strikes the conveying roll 4 after leaving the photoreceptor surface to give an impact to the transfer paper, and the transfer paper 3 is guided smoothly.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transfer paper peeling and conveying system that peels off and conveys the transfer paper after a toner image is transferred from the surface of a photoreceptor to a transfer paper by a transfer means.

In the conventional electronic harp X copy m, when paper with strong glands such as official postcards is used as the transfer paper, 11, when the toner scratches are transferred, the transfer paper is ti! of the photoreceptor drum. This is a situation in which the attack does not move along the surface and is in contact at a single point. For this reason, as shown in FIG. 1, in a copying machine that employs a redundant belt system, the leading edge of the transfer paper 3 that has been peeled off from the photoreceptor drum 2 by the peeling belt l enters directly in the tangential direction of the photoreceptor drum 2. However, the peel collides with the conveying roll 4 far below the nipping point 5 formed by the conveying roll 4 and the peeling belt 1. With strong paper such as official postcards, the impact can be absorbed by the paper bending, but the impact is transmitted to the toner being transferred, causing transfer defects. was.

In this book @@8, the drawbacks of the prior art are eliminated, and the toner image r is transferred from the photoreceptor drum to the leading edge of the transfer paper 1-1Ih without any hook impact.
(m (pJ) The purpose is to convey the transfer navy blue without causing any shadow w.

fC,kf to achieve this purpose:,,unexploded'dAryu,
A toner image is transferred from the surface of the photoreceptor to a transfer paper tC by a transfer means arranged adjacent to the photoreceptor V, and then the transfer paper is peeled off via a peeling means and conveyed by a conveyance means. In the paper peeling and conveying device, the transfer means and Il! A transfer paper peeling and conveying device f1t is provided, which is characterized in that a transfer paper conveyance guide means for guiding the next transfer paper to the conveyance means is provided between the iJ conveyance means. If there is a peeling belt in contact with the photoconductor and the conveyance means as a peeling means, the transfer paper conveyance guide means has a stripping belt extending from one edge of the transfer means to the vicinity of the contact point between the peeling belt and the conveyance means. , II preferably form a substantially wedge-shaped guide path with the separation belt.

In the transfer paper peeling and conveying device of the present invention, the guide means is provided between the transfer means and the conveyance means, so that the transfer paper is guided to the entrance of the conveyance means, and the transfer paper edge rcs
The impact does not affect the transferred toner image due to the force L1.

An embodiment of the present invention will be explained with reference to FIG.
J is shown in the second figure. When the -th section is examined, the photosensitive drum 2, which is supported to rotate in the direction of the arrow H, is 1itj.
Transcription Corotro/6 is placed in v5, Guide/NEET 7
The toner image adheres to the surface of the photoreceptor drum and is electrostatically transferred to the transfer paper 3 that has been sent through the transfer paper 3. Thereafter, the transfer paper is peeled off from the photoconductor drum 2 due to the strength of the peeling belt 1 interposed between the transfer paper 2 and the transfer paper 3, or the transfer paper itself, and the photoconductor is peeled off. Human hair, which is used for Drum 2, is brought in. As shown in Figure 3, this end is the fixing member 9.
k fffi is added, and is attached to the spring 10 via the cable/11t which is in contact with the photoreceptor 2 and the transport roll 4. This gives power to the J-J release belt! There are 1. The contact pressure between the photosensitive drum 2 and the conveyor roll 4 and the peeling belt 3 is maintained at an appropriate level of 1 by the bottle 11, the shaft 12, and the spring 13. Outside of the shield part of the transfer corotron 6 l1116
A transfer paper conveyance guide member 14 is fixed to ``C''. is formed.

To be more specific, it is preferable that the other end 14' of the guide member extends to the vicinity of a point 5 where a common tangent between the photosensitive drum 2 and the transport roll 4 contacts the transport roll 4. In this way, the guide member 14 between the transfer corotron 6 and the conveyance roll 4 is arranged, and then the transfer paper 3ri is peeled off by the peeling belt 1 and guided through the wedge-shaped guide path 15, and the peeling belt 1 is used to guide the transfer paper 3 through the wedge-shaped guide path 15. 1 and the conveying roll 4, and furthermore, the Ik of the conveying roll 4 and the pinch roll 17 is
After passing through the formed nip, the transfer paper is sent along the transfer paper transport member 18 to a fixing device (not shown).

Here, to add a brief explanation about the conveyance guide member 14, this conveyance guide member 140, the plunge angle of the transfer paper 3 entering the conveyance roll 4, ) From the position where the IK is clamped, move forward to the forward direction and clean the leading edge of the paper with the gIi feed roll 4.
and the peeling belt] to the clamping point. Furthermore, since the inner material 14 of the JIli transfer paper is made of a material with a small harmonic coefficient, it also serves as a sensitive phase that reduces the resistance that the transfer paper is subjected to.

The third section μ shows the shape of the conveyance guide member 14 in the axial direction of the photosensitive drum 2 in the present invention. As can be seen from the background, the conveyance guide member 14-1 is in ←<IPII contact with the peeling roll 4.

In the example of the transfer paper conveyance guide member 14μ according to the present defense VC, the transfer corotron b and the carry-in roll 4 for one day] V
C, Transfer Corotro/6's shield ground outer surface 6'
The fist is fixed in place, but the fist is not limited to that position.
As shown in the figure, it is also possible to attach the transfer paper conveyance guide member 14 using the fixed foot member 19 of the main member 1j.

7' (As shown in Figure 5, the rolled shape of the corotron 6 may also serve as a conveyance guide member). In addition to the shape shown in FIG. 3 that extends throughout the lengthwise direction, even a waveform shape as shown in FIG. 6 will not affect the functionality.

The materials and shape of the paulownia 14 inside the transfer structure are limited to stainless steel with a thickness of about 50A, gold 11 pieces of phosphorus, polyester, and sheets of polymeric materials such as &lJ ethylene, and these sheets are conductive. It is also possible to use a material that undergoes a long treatment.

As described above, according to the transfer paper material #1 feeding equipment of the present invention, the transfer paper conveyance guide member is disposed between the transfer means and the conveyance means, so that the transfer paper can be easily moved. Even when the toner is transferred, it is guided cleanly to the conveyance roll 4 without applying any impact to the tip thereof, so that no negative influence is exerted on the transferred toner.

[Brief explanation of the drawing]

FIG.
FIG. 3 is a schematic diagram of a transfer paper peeling and conveying device incorporated in the present invention; FIG. 3 is a schematic diagram of a transfer paper peeling and conveying device according to the present invention; FIG. Figure 3 is a schematic diagram of the third embodiment of the conveyance guide member used in the transfer paper peeling and conveyance device, and a schematic diagram of the third embodiment of the conveyance guide member of the present invention. 11th * m t of Biba's conveyance guide member
FIG. l... Peeling belt, 2... Photosensitive drum, 3...
Transfer paper, 4... Transport sole, 6... Transfer corotron, 14... Transfer paper conveyance guide member, 17... Pinotirol. Figure 1 Figure 2

Claims (1)

[Claims] A toner image is transferred from the surface of the photoreceptor to a transfer paper by a transfer means arranged adjacent to the photoreceptor, and the transfer paper is peeled off.
In a transfer paper peeling and conveying device of an electrophotographic copying machine in which the transfer paper is peeled off via the Ilf+ stage and conveyed from the conveyance means (C), the peeled transfer paper is conveyed between the front 8-pi transfer means and the conveyance means. A transfer paper peeling and conveying device having a 4V feature in which a transfer paper conveyance guide means for guiding the transfer paper to a conveyor K is provided.