JPS6097380A - Cleaning device of electronic copying machine - Google Patents

Abstract

PURPOSE:To prevent the occurrence of cleaning defects by fixing a supporting rod, which is provided in the open end side of a cleaning unit, to frame member freely attachably and detachably to not only reinforce the frame member but also prevent deformation of the frame member with the supporting rod. CONSTITUTION:A belt-shaped photosensitive body 5 is supported freely rotatably between frame members 4 of a frame unit 3 which can be pulled out freely, and a cleaning unit 7 is freely turned upward around a supporting shaft 8 between frame members 4, and a supporting rod 17 is inserted through a pair of frames and is supported. Small-diameter parts 17b in both ends of the supporting rod 17 are projected to the outside through small notches 4a of frame members 4, and frame members 4 are fixed between parts 17b by nuts 19. Consequently, the supporting rod 17 fixed freely attachably and detachably to frame members 4 reinforces frame members 4 and prevents deformation of the frame unit 4 supporting the photosensitive body 5 to prevent the occurrence of cleaning defects.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to a cleaning/cleaning device for an electronic copying machine using a fur brush roll.

BACKGROUND OF THE INVENTION A known electronic copying machine of this type is shown in FIG. In the copying machine described above, a belt-shaped photoreceptor C is provided between a pair of frame members that can be freely drawn out from the copying machine main body a, and above the photoreceptor C there is a support l1ld supported by the frame members. A cleaning unit e is attached to a pivot point that rotates upward around the center. In the copying machine having the above structure, the photoreceptor C can be rotated about the fulcrum f to the position shown by the broken line in FIG. 2 during maintenance and inspection. For this reason, it is not possible to provide a reinforcing member that connects each frame member bt in the upper part of the frame member, and the strength of the frame is very low. As a result, the cleaning unit e installed between each frame member moves in the axial direction or is deformed due to the deformation of the frame, causing IJ-ning failure, and the Ufff that drives the fur brush.
There were problems such as more torque being applied to the fl system than necessary.

Purpose of the Invention The present invention was made for the purpose of improving the above-mentioned problems, and provides a cleaning device for an electronic copying machine in which the support rod supporting the cleaning unit also serves as reinforcement for the frame member, thereby preventing deformation of the frame member. This is an attempt to eliminate cleaning defects caused by such problems.

Structure of the Invention A photoreceptor is provided in a frame unit that can be freely drawn out from the main body of the copying machine, and is rotatable upward. A cleaning unit is provided so as to be rotatable upwards, and both ends of a support rod provided on the open end side of the cleaning unit are fixed to the frame portion of the frame unit so as to be removable, thereby reinforcing the frame m unit. , a cleaning device for an electronic copying machine that prevents cleaning failures caused by deformation of the frame unit.

Embodiment Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings shown in FIG.
A frame unit 3 that can be freely drawn out is installed on the side of the main body 1 along a guide rail 2. The framework unit 3 has frame parts 4 provided at intervals in the longitudinal direction of the inner rail 2α, and a belt-shaped photoreceptor 5 is rotatably supported between these frame members 4. ing. Reference numeral 7 denotes a cleaning unit located above the photoreceptor 5 and installed between each frame member 40, and includes a pair of frames 9 that are rotatable upward about a support shaft 8 supported between the frame members 4. The housing 1 is placed between these frames 9 with the opening facing downward.
0 is placed horizontally. A pair of fur brush rolls 11 which are rotated in the direction of the arrow by a drive system (not shown) are accommodated in the housing 10, and these fur brush rolls 11 remove untransferred residual toner from the surface of the photoreceptor 5.

The υ passage 12 is sucked and collected by suction means (not shown).

In the figure, 13 shows a flip cover to which a bias power supply 14 is applied, 15 shows a static eliminating corotron, and 16 shows a charging corotron.

On the other hand, a support rod +7 is fixed and penetrated between the rotating ends of the frame 9 that supports the housing 10. Above support rod 1
A large diameter portion 17cL and a small diameter portion +7b are formed at both ends of the frame member 7, and each large diameter portion 17cL and a small diameter portion +7b are formed so that the spacing t between the large diameter portions 17α matches the spacing between the frame members 4.
The lower part of α is supported from below by a receiving seat 18 fixed to the inner surface of the frame member 4. Further, the small diameter portion 17b protruding from the end face of the large diameter portion 7α passes through a notch 4α formed in the frame member 4 and is open at the top, and protrudes outward from the frame member 4.
A nut 1 is attached to the threaded part +70 formed in the small diameter part 17.6.
By tightening this nut 19, the frame member 4 can be clamped between the large diameter portion 17α and the nut 19.

Effects of the Invention As described in detail above, in the present invention, both ends of the support rod 17 that supports the cleaning unit 7 protrude toward the frame member 4 side, and the support rod 17 is secured by the fixing means provided at both ends of the support rod 17.
Since the frame member 4 is fixed, the support rod +7 of the cleaning unit 7 also serves as a reinforcing member of the frame member 4, so that the frame unit 3 supporting the photoreceptor 5 can be prevented from deforming. As a result, framework unit 3
This makes it possible to prevent cleaning failures caused by deformation of the fur brush roll 11 and unnecessary torque from being applied to the drive system of the fur brush roll 11.

Furthermore, when rotating the photoreceptor 5 upward during maintenance and inspection, the supporting rod 17 can be rotated upward along with the cleaning unit 7 by removing the fixing means at both ends of the support. The support rod 17 does not get in the way during rotation.

[Brief explanation of drawings]

1 and 2 are explanatory diagrams showing failures of a conventional cleaning device, FIG. 3 is a perspective view of a cleaning device according to an embodiment of the present invention, FIG. 4 is an enlarged sectional view of the cleaning device, and FIG. 6 is a partially cutaway front view of the support rod portion; FIG. 7 is a detailed view of the vicinity of the brush roll; FIG. 7 is a view taken from the direction shown in FIG. 6; Reference numeral 1 denotes the camera body, 3 a frame unit, 4 a frame member, 5 a photoreceptor, 7 a cleaning unit, g a support shaft, and 17 a support rod. Applicant Fuji Xerox Co., Ltd. Agent Patent Attorney Masaaki Yonehara Patent Attorney Tadashi Hamamoto

Claims (1)

[Claims] A photoreceptor 5 is provided between the frame members 4 of the frame unit 3 that can be freely drawn out from the copying machine main body 1, and is rotatable upwards with one end as a fulcrum. In a device in which a cleaning unit 7 is provided so as to be able to rotate upwardly around a support shaft 8 horizontally suspended between the two, both ends of the support rod 17 provided on the open end side of the cleaning unit 7 are moved toward the frame member 4 side. A cleaning device for an electronic copying machine, which protrudes and is provided at both ends of a support rod +7 with fixing means for releasably fixing the frame member 4 and the support rod 17.