Invented by Masahiro Kurachi, Kazuhiro Yamauchi, Satoru Nishioka, Kenji Takashima, Yuichi Kikuchi, Canon Inc
The Canon Inc invention works as followsThe electro-conductive member has an electro-conductive support, and an electro-conductive layer in this order, the electro-conductive layer including a matrix and domains, the matrix constituted by a first rubber composition containing a cross-linked product of a first rubber, the domains having electro-conductivity, and dispersed in the matrix, each of the domains constituted by a second rubber composition containing a cross-linked product of a second rubber and an electro-conductive particle, the first rubber and the second rubber being diene-based rubbers, the first rubber having at least one monomer unit, the second rubber having at least one monomer unit different from the monomer unit which the first rubber has; a difference of absolute values of SP values between the first rubber and the second rubber is 0.2 (J/cm3)0.5 to 4.0 (J/cm3)0.5; and a tan ?1/tan ?2 is 0.45 to 2.00.
Background for Electroconductive member for Electrophotography, Process cartridge for Electrophotography, and Electrophotographic Image Forming Apparatus
Field of Invention
The present disclosure is about an electro-conductive element that forms an electrophotographic picture. The present disclosure also pertains to a process cart for electrophotography that uses the electroconductive member and an apparatus used to form electrophotographic images.
Description of Related Art
The electro-conductive member can be used in an electrophotographic apparatus as a charging, transfer and developing member. The charging member and transfer member each have the function of charging the member that is to be charged by releasing electricity onto the member, such as an electronic photosensitive or paper member.
An aspect of the disclosure is to provide an electro-conductive element for electrophotography that can charge uniformly a member, even when compression set has taken place. A process cartridge for electrophotography is also provided in the present disclosure. This contributes to a stable formation of an electrophotographic image of high quality. Another aspect of the disclosure is to provide an electrophotographic apparatus capable of forming a high-quality image.
According to another aspect, a process cartridge is provided for electrophotography. It is attachable detachably to the main body of an image-forming electrophotographic apparatus and contains an electrophotographic member photosensitive and the above electrode-conductive member.
The present disclosure also includes an electro-conductive member that is used to form electrophotographic images.
The following description of exemplary examples with reference to the drawings will reveal further features of the invention.Click here to view the patent on Google Patents.