Blade and image forming apparatus incorporating same

A scraper and component technology, which is applied in the field of scraper components and image forming devices, can solve the problems of faster vibration speed of the cleaning scraper, and achieve the effects of suppressing abnormal sound and fatigue

Active Publication Date: 2016-04-27
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the vibration speed of the edge portion of the cleaning blade with high elastic power becomes faster, and the generation of abnormal sound due to the vibration is also easy.

Method used

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  • Blade and image forming apparatus incorporating same
  • Blade and image forming apparatus incorporating same
  • Blade and image forming apparatus incorporating same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] As the cleaning blade of embodiment 1, such as figure 1 As shown, a cleaning blade formed of a two-layer construction of an edge layer and a support layer is used. The thickness of the edge layer is 0.5 mm, and the thickness of the support layer is 1.3 mm. In addition, the elastic power of the edge layer is 82%, the elastic power of the support layer is 91%, and the elastic power of the support layer is greater than that of the edge layer.

[0078] In Example 1, the linear pressure drop after leaving for 168 hours in a state where the cleaning blade was brought into contact with the image carrier as the member to be contacted was 2.3 g / cm. This is a value smaller than the line pressure drop of 4.0g / cm (20% of the set line pressure) caused by the line pressure drop in the MPC3503 machine, and it is not a line pressure drop that affects cleanability .

[0079] The reason why the decrease in cleanliness due to fatigue can be suppressed is considered as follows.

[0080...

Embodiment 2-14

[0084] For the cleaning blades of Examples 2-14, the elastic power of the edge layer and the elastic power of the support layer were changed to the values ​​shown in Table 1 from the configuration of Example 1.

[0085] The magnitude relationship of the elastic power of the edge layer and the support layer in the cleaning blade of Examples 2-14 is the same as that of Example 1, and can suppress the abnormal sound generated by the sliding movement between the abutting member and the edge and the duration of time. fatigue that occurs in Since the reason for obtaining such an evaluation is the same as in Example 1, description thereof will be omitted.

Embodiment 2-4

[0145] Because the cleaning blade of embodiment 2-14 is the same as embodiment 1, the martens hardness of edge layer is at 1.0N / mm 2 As described above, it is possible to suppress filming of the toner admixture on the surface of the image carrier.

[0146] In addition, since the Martens hardness of the edge layer is higher than that of the supporting layer, even if the hardness of the edge layer is high enough to maintain the removal ability of the surface of the abutted member, it is possible to maintain the relative relative strength of the entire scraper against the surface of the abutted member. The followability of the surface shape of the contact member.

[0147] Since the reason for obtaining such an evaluation is the same as in Example 1, description thereof will be omitted.

[0148] (comparative example 1)

[0149] The cleaning blade of Comparative Example 1 is a single-layer cleaning blade, and the Martens hardness of the edge is 1.0 N / mm 2 the following.

[0150...

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Abstract

An elastic blade includes an edge layer and at least one backup layer laminated on the edge layer. The edge layer includes a contact edge to contact a contact object and an opposing face to oppose the contact object, and the backup layer is greater in elastic power than the edge layer.

Description

technical field [0001] The present invention relates to a blade member and an image forming apparatus thereof. Background technique [0002] Conventionally, in electrophotographic image forming apparatuses, for image carriers such as photoreceptors, transfer residual toner adhering to the surface after transferring a toner image to transfer paper or an intermediate transfer body is caused by Removed as a cleaning device for cleaning mechanisms. [0003] As a cleaning member of this cleaning device, it is well known that a cleaning blade is generally used as a blade member having a simple structure and good cleaning performance. [0004] Patent Document 1 describes a cleaning blade made of an elastic blade made of urethane rubber. The bottom end of the cleaning blade is supported by a supporting member, and after the tip ridge portion is pushed against the image carrier, the toner remaining on the image carrier is intercepted and scraped off to be removed. [0005] The cle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G21/00B32B7/022
CPCG03G21/0011B32B7/022G03G15/161G03G2215/0132B08B1/005B08B7/02G03G21/0017B08B1/006B32B27/08B32B27/40B32B2307/51B32B2307/536B32B2432/00G03G2221/001
Inventor 清水英辅渡边一彦多和田高明菊地尚志
Owner RICOH KK
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