Conductive roller, process cartridge and electrophotographic apparatus
An electroconductive roller and electrophotographic technology, which can be applied to equipment, corona discharge devices, and electrical recording technology using charge patterns, etc., and can solve problems such as problems related to adhesion.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0060] [3. Preparation example of unvulcanized rubber composition]
[0061] Materials shown in Table 3 below were mixed using an open roll to obtain an unvulcanized rubber composition 1 containing epichlorohydrin.
[0062] table 3
[0063]
[0064] In addition, in addition to changing the epichlorohydrin rubber to a product available under the trade name "CG-102" from Daiso Co., Ltd. (new company name: Osaka Soda Co., Ltd.), in combination with unvulcanized rubber Unvulcanized rubber composition 2 was obtained in the same manner as material 1.
Embodiment 1
[0066] (1. Formation of adhesive layer)
[0067] The adhesive 1 was applied over the entire periphery of the 230-mm range except for both end portions 11-mm of the conductive support shaft 1 having a total length of 252 mm using a roll coater. After the adhesive was applied, the conductive support shaft was heated in a hot air drying oven at a temperature of 170° C. for 20 minutes, thereby forming an adhesive layer.
[0068] (2. Formation of conductive layer)
[0069] Next, a crosshead extruder having a supply mechanism of a conductive support shaft on which an adhesive layer was formed and a discharge mechanism of an unvulcanized rubber roll was prepared, and a die with an inner diameter of 12.5 mm was attached to the crosshead. The temperatures of the extruder and the crosshead were each set to 80° C., and the speed at which the conductive support shaft on which the adhesive layer was formed was conveyed was set to 60 mm / sec. Unvulcanized rubber composition 1 was supplied ...
Embodiment 2 to 33 and comparative example 1 and 2
[0098] Conductive rollers 2 to 33 were produced in the same manner as in Example 1, respectively, except that the unvulcanized rubber compositions for the conductive support shaft, adhesive layer, and conductive layer were changed as shown in Table 5 (Examples 2 to 33 ), the conductive roller C1 (comparative example 1) and the conductive roller C2 (comparative example 2); and their performance was evaluated. The evaluation results are shown in Table 6.
[0099] table 5
[0100]
[0101] Table 6
[0102]
[0103] As shown in Table 6, the conductive rollers of Examples 1 to 33 each having an adhesive layer comprising a phenolic resin on the conductive support shaft of the present invention and each having a conductive layer comprising epichlorohydrin rubber on the adhesive layer Each is excellent in the initial adhesion force between the conductive support shaft and the adhesive layer. In addition, even when each roller is left under high temperature and high humidity, ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle size | aaaaa | aaaaa |
| width | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More