JPS60212782A - Recording paper peeling device - Google Patents

Abstract

PURPOSE:To prevent the deterioration or defect of a quality of a copy caused by a flaw of a photosensitive drum by constituting a titled device so that a recording paper can be peeled off without using a stopper finger, etc., when peeling off the recording paper which adheres electrostatically to the surface of the drum. CONSTITUTION:When peeling off a recording paper 12 from the surface of a drum 1, it is executed by a sucking force through a suction port 5... of a rotating body 9 placed so as to be rotatable on one outside periphery of the photosensitive drum 1. Therefore, a recording paper 5 can be peeled off without damaging the surface of the drum 1, and accordingly, there is an effect for preventing the generation of a copy quality failure caused by a flaw of the drum. Also, this device has a function, too, of a cleaning device which scrapes down all toners left on the surface of the drum 1 by cleaning fur materials 6... planted on the outside periphery of the rotating body 9 and sucks them into the rotating body 9, after a recording paper 4 is peeled off, and discharges them to the outside of a machine main frame through a pipe material 7 from said rotating body, therefore, a picture quality of a copy can be always held in a good state.

Description

[Detailed description of the invention]

(Industrial Application Field) The present invention relates to a peeling device for recording paper electrostatically attached to the surface of a photoreceptor drum in an electrophotographic copying machine or the like. (Prior Art) Conventionally, in an electrophotographic copying machine, etc., a K for peeling off recording paper electrostatically attached to the surface of a photoreceptor drum is provided with a stopper finger located on one outer periphery behind the transfer portion of the photoreceptor drum. The sharp tips of the claw-like members are placed in contact with each other, and the tips are placed between the surface of the photoreceptor drum and the recording paper adhering to the surface so that the recording paper can be peeled off. However, in this recording paper peeling method, the tip of the finger is brought into direct contact with the surface of the drum, so the photoreceptor coated on the surface of the drum at the point of contact is likely to wear out. Then, there is a drawback that the portion appears as a black streak or black band on the final copy, resulting in a decrease in the quality of the copy or a defect. (Object of the Invention) The present invention has been made to eliminate the drawbacks of the conventional recording paper peeling method described above, and includes: K so that it can be peeled off without using a stopper or fingers, etc.
It is an object of the present invention to provide a recording paper peeling device that can prevent deterioration in copy quality or defects due to drum scratches. (Structure of the Invention) For this purpose, the present invention provides a recording paper peeling device disposed on one outer periphery behind the transfer portion of the photosensitive drum in the machine body of an electrophotographic copying machine, etc., in a cylindrical shape having a predetermined length. , an inlet such as a long hole or a round hole is bored at a suitable location on the outer periphery, and cleaning bristles are implanted, one end of which is connected to a pipe material such as an intake tube, and the other end is equipped with a drive A rotating body to which a force transmitting member is fixed is rotatably mounted in a substantially circular frame using a bearing, and the peeling device is operated to perform both suction and rotation at the rear of the transfer section of the photoreceptor drum. At the same time, the recording paper that is electrostatically attached to the surface of the photoreceptor drum is peeled off from the surface of the drum by the suction force through the intake port of the rotating body during the operation. ,
Toner and the like remaining on the surface of the photoreceptor drum are scraped off with cleaning bristles, sucked into the rotating body, and then discharged to the outside of the machine using the suction pipe. (Embodiments) The present invention will be described in detail below based on embodiments shown in the drawings. FIG. 1 is a schematic layout diagram when a recording paper peeling device according to the present invention is used in an electrophotographic copying machine. That is, in the figure, transfer flotrons 2. Of the peeling corotron 3 and the guide member 4, the recording paper peeling device disposed between the peeling corotron 3 and the guide member 4 has a cylindrical shape with a predetermined length, as shown in FIG. An air intake port 5, such as a long hole or a round hole, is bored in the appropriate location of the external station, and fw sweeping bristle material 6 is planted therein, and both ends of the bristles are made small in diameter, and one end of the small diameter part is provided with an air intake port. A rotating body 9 with a driving force transmitting member 8 fixed at the other end, which is connected to a pipe material 7 such as a tube for use, is rotatable using bearings 11, 1+' in a frame IO provided in a substantially circular shape K1112 The apparatus is fixed with the opening of the frame 10 facing the surface of the photoreceptor drum 10 between the peeling corotron 3 of the photoreceptor drum 1 and the guide member 4, and then the rotating body 9 is The pipe material 7 connected to one end is connected to a vacuum device f! inside the machine main body (not shown). When LK is connected, the driving force transmitting member 10 fixed to the other end of K is connected to a drive device in the machine body (not shown) for use. The present invention is constructed as described above. Next, its operation will be explained. Now, when you start copying work using an electronic photocopier. Along with this, the vacuum device in the machine body operates, and the rotating body 9 in the frame IO transfers air between the peeling corotron 3 of the photoreceptor drum 1 and the guide member 4 through the intake port 5. At the same time, the drive device also operates to rotate the rotating body 9 within the frame 10, and the cleaning bristles 6 start cleaning the surface of the photoreceptor drum 1.

[The recording paper 12, onto which the unfixed toner particles were transferred by the transfer corotron 2 of the photosensitive drum 1, was placed next to it! Photoreceptor drum 1 by +1 colodor 3
The electricity is removed while it remains attached to the 0 surface and then transported. The recording paper 12 is peeled off from the surface of the photoreceptor drum 10 by the rotating body 9 by suction force through the suction ports 6, and transferred to the next transfer means. The toner etc. remaining on the surface of the photoreceptor drum 10 is scraped off using the cleaning bristles 6 that are flocked on the outer periphery, and the toner etc.
After being sucked into the inside, it is discharged to the outside of the machine body through the pipe material 7. (Effects of the Invention) The present invention is configured and used as described above, and after the toner image is transferred, the recording paper 12 adhering to the surface of the photosensitive drum 10 is peeled off from the surface of the drum. Instead of using a stopper finger as in the conventional peeling device, the stripping device uses suction force through the suction port 5 of the rotating body 9 rotatably arranged around one outer periphery of the photoreceptor drum 7-1. Since the recording paper 5 is pressurized, it is possible to peel off the recording paper 5 without damaging the surface of the drum 10, thereby preventing the occurrence of poor copy quality due to drum scratches. , drum 1
All toner remaining on the surface of the rotary body 9 is scraped off with the cleaning bristles 6 planted on the outer periphery of the rotary body 9, sucked into the rotary body 9, and from there is passed through the pipe material 7 to the outside of the machine body. Since it also has the function of a cleaning device that discharges the drum 10, it is possible to keep the surface of the drum 10 clean at all times.
Therefore, it has the effect that the image quality of the final copy can always be kept in good condition.

[Brief explanation of the drawing]

FIG. 1 shows the recording paper peeling device of the present invention for electrophotographic copying 15!
Figure 2 is the same schematic layout diagram for the nine cases used. FIG. 1 is a cross-sectional front view showing an embodiment of a recording paper peeling device. In the figure, 1...photosensitive drum, 2...transfer corotron. 3... Peeling corotron, 4... Guide member, 5... Inlet port. 6. Hair material for cleaning, 7. Tube material, 8. Driving force transmission member. 9... Rotating body, 10... Frame, l 1.11'.
··bearing. 12... Recording paper. Patent applicant Fuji Xerox Co., Ltd.

Claims (1)

[Claims] A peeling device is installed at a predetermined length on one outer periphery behind a transfer section of a photoreceptor drum or the like in an electrophotographic copying machine under equal pressure and is used to peel recording paper from the surface of the drum. A rotating body having a cylindrical shape, with an intake port bored at a suitable location on the outer periphery, and a cleaning bristle material implanted therein, with an intake tube connected to one end, and a driving force transmission member fixed to the other end VC. The device has a structure in which a frame is provided in a substantially circular shape and is rotatably added via a bearing, and the rotating body of the device performs both suction and rotation operations at one outer periphery behind a transfer section such as a photoreceptor drum, The suction force peels off the recording paper that is electrostatically attached to the surface of the photoreceptor drum, while the cleaning bristle material scrapes off toner, etc. remaining on the surface of the photoreceptor drum, which is sucked into the rotating body. A recording paper peeling device characterized in that the recording paper is discharged to the outside of the machine body through a tube.