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Support member, image carrier, and image forming apparatus

A technology for image bearing body and supporting components, which is applied in the direction of electric recording process using charge pattern, equipment for electric recording process using charge pattern, and electric recording technique, which can solve problems such as drop, increase concentration uniformity, reduce The effect of vibration

Active Publication Date: 2016-10-05
FUJIFILM BUSINESS INNOVATION CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when a supporting member having a C-shaped cross section is used, the effect of suppressing the vibration of the photosensitive drum may decrease

Method used

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  • Support member, image carrier, and image forming apparatus
  • Support member, image carrier, and image forming apparatus
  • Support member, image carrier, and image forming apparatus

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0073] refer to Figure 12 , the supporting member 116 according to the first embodiment may be fitted to the cylindrical body 108 so that the supporting member 116 is supported in the central region of the cylindrical body 108 in the depth direction of the device.

[0074] The support member 116 is made of resin material. Such as figure 1 As shown in (A) and (B), the supporting member 116 is arc-shaped and includes end portions facing each other with gaps 116A provided therein. The gap 116A is formed in the support member 116 so as to extend in the axial direction at a certain position in the circumferential direction. In the first embodiment, the supporting member 116 is made of acrylonitrile-butadiene-styrene (ABS) resin. The wall thickness of the support member 116 was 4 mm, and the length of the support member 116 in the device depth direction was 100 mm.

[0075] Such as figure 1 As shown in (B), in the state where the supporting member 116 is supported in the cylin...

no. 2 example

[0089] The supporting member 136 according to the second embodiment is described below. Differences between the support member 136 and the support member 116 will be mainly described below.

[0090] exist Figure 4 The outer peripheral surface 136D of the support member 136 according to the second embodiment in (B) is indicated by a one-dot chain line and a solid line, which extend in the device depth direction. In the state where the support member 136 is set in the cylindrical body 108 , the outer peripheral surface 136D is a circular surface when viewed in the device depth direction. The outer peripheral surface 136D partially includes an imaginary surface.

[0091] In a state where the support member 136 is supported in the cylindrical body 108 , the support member 136 includes a pair of planar portions 136C that are symmetrical to each other with respect to the straight line E1 when viewed in the device depth direction. Such as Figure 4 As shown in (A) and (B), the p...

no. 3 example

[0102] The supporting member 156 according to the third embodiment is described below. Differences between the support member 156 and the support member 116 will be mainly described below.

[0103] exist Figure 6 The outer peripheral surface 156D of the support member 156 according to the third embodiment in (B) is indicated by a one-dot chain line and a solid line, which extend in the device depth direction. In a state where the support member 156 is set in the cylindrical body 108 , the outer peripheral surface 156D is a circular surface when viewed in the device depth direction, and the outer peripheral surface 156D partially includes an imaginary surface.

[0104] In a state where the support member 156 is supported in the cylindrical body 108 , the support member 156 includes a pair of planar portions 156C that are symmetrical to each other with respect to the straight line E1 when viewed in the device depth direction. Such as Figure 6 As shown in (A) and (B), the pl...

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PUM

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Abstract

The present invention discloses a support member, an image carrier, and an image forming apparatus. A support member supported in a cylinder included in an image carrier includes six or more contact portions that are arranged in a circumferential direction of the cylinder with spaces therebetween and that are in contact with an inner peripheral surface of the cylinder. The support member is arc-shaped and has a gap at a certain position in the circumferential direction, the gap extending in an axial direction of the cylinder. In a state in which the support member is supported in the cylinder, a groove that extends in the axial direction is formed in the support member such that the groove and the gap are on opposite sides of a center of the cylinder when viewed in the axial direction. In the state in which the support member is supported in the cylinder, the contact portions are symmetrical with respect to a straight line that passes through a center of the gap and a center of the cylinder when viewed in the axial direction. In the state in which the support member is supported in the cylinder, of the contact portions that are on one side of the straight line when viewed in the axial direction, two contact portions that are father from each other are separated from each other by approximately 90 degrees or more in the circumferential direction, and two contact portions that are adjacent to each other are separated from each other by approximately 20 degrees or more in the circumferential direction.

Description

technical field [0001] The present invention relates to a supporting member, an image carrier, and an image forming device. Background technique [0002] The image forming apparatus described in Japanese Patent Laid-Open Publication No. Hei 08-54804 includes a photosensitive drum in which a sliding member is provided. The sliding member is in slidable contact with the inner wall surface of the photosensitive drum, and applies a predetermined pressing force to the inner wall surface. [0003] The slide member (support member) described in Japanese Patent Laid-Open No. 08-54804 has a gap extending in the axial direction of the photosensitive drum (cylindrical body) at a specific position in the circumferential direction. The sliding member is C-shaped in cross-section so that its two ends face each other. The sliding member is designed such that its outer peripheral surface is in contact with the inner peripheral surface of the photosensitive drum over the entire area of ​​t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/00
CPCG03G15/0216G03G15/0896G03G15/1685G03G15/751G03G15/10
Inventor 牧浦伸哉纳浩史森正裕山崎修平荒毛一志早坂知士
Owner FUJIFILM BUSINESS INNOVATION CORP