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Cleaning blade, process cartridge, and image forming apparatus

A cleaning scraper, flat-shaped technology, applied to the cleaning scraper, can solve the problems of cracking of the surface layer, reduction of tracking of cleaning parts, etc., and achieve the effect of suppressing the reduction of tracking

Inactive Publication Date: 2018-08-28
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are concerns about cracking of the surface layer due to thickening of the film and a decrease in followability to the cleaned part.

Method used

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  • Cleaning blade, process cartridge, and image forming apparatus
  • Cleaning blade, process cartridge, and image forming apparatus
  • Cleaning blade, process cartridge, and image forming apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0235] The coating liquid 1 was sprayed on the surface of the base material made of urethane rubber with a mask width of 5 mm.

[0236] The spray gun used was SV-91 manufactured by SANEITECH Co., Ltd., and the tip of the gun faced the center of the coating portion, and the distance from the tip of the gun to the surface of the sheet was 60 mm. The spray gun sets the spray speed of the coating liquid to

[0237] 0.04cc / min, the atomization pressure is set to 0.05MPa, and the surface of the sheet is repeatedly reciprocated in the long direction at 5mm / sec for coating.

[0238] Next, remove the mask, and use an ultraviolet irradiation device (ECS-1511U manufactured by EYE GRAPHICS CO., LTD.) to perform secondary ultraviolet irradiation (transport speed 54mm / min, cumulative illuminance 4000mJ / cm 2 ), and thereafter, drying was performed at an internal temperature of 100° C. for 15 minutes using a heat dryer to form a surface layer.

[0239] The central part of the region where t...

Embodiment 2～3

[0258] As shown in Table 1, the width of the mask was changed to form a surface layer. In the same way as in Example 1, cleaning blades 2 and 3 were produced respectively, and in the same way as in Example 1, they were installed in an image forming apparatus and a paper passing test was carried out. Make an evaluation.

[0259] Table 1 shows the shape and hardness value of the formed surface layer, and the evaluation results.

Embodiment 4～5

[0261] As shown in Table 1, the width of the mask was changed, and the surface layer was formed using the coating solution 2. In the same manner as in Example 1, cleaning blades 4 and 5 were produced, respectively, and were installed in an image forming apparatus in the same manner as in Example 1. A paper pass test was implemented and evaluated.

[0262] Table 1 shows the shape and hardness value of the formed surface layer, and the evaluation results.

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Abstract

The invention relates to a cleaning blade that inhibits tracing ability reduction and shimmy / crack formation caused by thickening of the surface layer; the cleaning blade has an elastic member (624).The elastic member has a secured end secured to a support and a free end. A ridgeline (62C) of the free end contacts the surface of a cleaning target (3) to remove substances adhering to the surface of the cleaning target. The elastic member includes a base (622) and the surface layer (623). The surface layer is disposed on at least a part of an opposite face disposed to oppose a downstream side (62b) of the cleaning target downstream from a contact portion of the elastic member with the cleaning target in a direction of movement of the cleaning target. A thickness of the surface layer progressively decreases toward the secured end along a cross section perpendicular to a longitudinal direction of the surface layer.

Description

technical field [0001] The present invention relates to a cleaning blade, a process cartridge, and an image forming apparatus. Background technique [0002] Conventionally, in an electrophotographic image forming apparatus, after a toner image is transferred to a recording medium or an intermediate transfer body in an image forming process, residual toner adhering to the surface of the image carrier is removed by cleaning means. [0003] As the cleaning means, since the structure is simple and the cleaning performance is excellent, a cleaning blade can be used. The cleaning blade is generally composed of an elastic member and a supporting member, and the elastic member is made of a rubber material such as urethane rubber. Then, the base end of the elastic member is supported by the supporting member, so that the abutting portion (top edge portion) of the elastic member is in pressure contact with the surface of the image carrier, and the toner remaining on the surface of th...

Claims

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Application Information

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IPC IPC(8): G03G21/00
CPCG03G21/0011G03G21/0017G03G21/1814G03G21/181G03G21/1676G03G21/1821G03G21/1842
Inventor 重里圭一郎权藤政信左近洋太大森匡洋水谷佑树青山由佳
Owner RICOH KK
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