Electroconductive member, process cartridge, and device for forming electrophotographic image

An electrophotographic image forming apparatus comprising an electrophotographic electroconductive member, the electrophotographic electroconductive member comprising:

• a support having an electroconductive outer surface;
• and
• an electroconductive layer on the outer surface of the support;
• the electroconductive layer comprising a matrix containing a crosslinked product of a first rubber, and domains dispersed in the matrix;
• the domains each comprising a crosslinked product of a second rubber, and electroconductive particles;
• the matrix having a volume resistivity R1 of more than 1.0×1012 Ω·cm, and the domains each having a volume resistivity R2 lower than the volume resistivity R1 of the matrix, wherein
• the electroconductive layer further comprises a pore, an inner wall of the pore being constituted by a part of the matrix and a part of the domains, and
• the domains constituting the inner wall protrude into the pore at sites on the inner wall.

An electrophotographic process cartridge, which is detachably attachable to a main body of an electrophotographic image forming apparatus, the process cartridge comprising an electrophotographic electroconductive member, the electrophotographic electroconductive member comprising:

• a support having an electroconductive outer surface;
• and
• an electroconductive layer on the outer surface of the support;
• the electroconductive layer comprising a matrix containing a crosslinked product of a first rubber, and domains dispersed in the matrix;
• the domains each comprising a crosslinked product of a second rubber, and electroconductive particles;
• the matrix having a volume resistivity R1 of more than 1.0×1012 Ω·cm, and the domains each having a volume resistivity R2 lower than the volume resistivity R1 of the matrix, wherein
• the electroconductive layer further comprises a pore, an inner wall of the pore being constituted by a part of the matrix and a part of the domains, and
• the domains constituting the inner wall protrude into the pore at sites on the inner wall.