US 7,929,009 B2Granted

Electrophotographic photosensitive drum, electrophotographic image forming apparatus, and method of manufacturing electrophotographic photosensitive drum

AssigneeCanon Kabushiki Kaisha

InventorsKatsunori Yokoyama, Ryuji Yamamoto

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Abstract

An electrophotographic photosensitive drum with a simple structure for realizing a seamless digital photosensitive drum having an exposure source and a photosensitive member which are integrated with each other. The electrophotographic photosensitive drum includes a self-luminous device portion, a functional separation portion, and a photosensitive portion. The self-luminous device portion includes a first electrode wire layer including multiple first electrode wires provided in a circumferential direction of a cylindrical substrate and arrayed in a longitudinal direction of the cylindrical substrate so as to be separated from each other by an insulating member, and each of the multiple first electrode wires is annularly formed.

Claims6

Dependent claims

An electrophotographic photosensitive drum, comprising:

a cylindrical substrate;
a light emitting element matrix layer which includes:
a first electrode wire layer including multiple first electrode wires each extending in a circumferential direction of the cylindrical substrate;
a second electrode wire layer including multiple second electrode wires each extending in a longitudinal direction of the cylindrical substrate;
and
an electroluminescence layer,
the multiple first electrode wires being arrayed in the longitudinal direction of the cylindrical substrate so as to be separated from each other by an insulating member,
the multiple second electrode wires being arrayed in the circumferential direction of the cylindrical substrate so as to be separated from each other by an insulating member,
the first electrode wire layer, the electroluminescence layer, and the second electrode wire layer being stacked in the stated order toward a surface of the electrophotographic photosensitive drum from the cylindrical substrate;
and
a functional separation portion which includes:
a transparent insulating layer provided on the light emitting element matrix layer;
and
a transparent conductive layer provided on the transparent insulating layer;
and
a photosensitive portion provided on the transparent conductive layer,
wherein each of the multiple first electrode wires is annularly formed with no seam.

14 more elements

An electrophotographic image forming apparatus, comprising:

an electrophotographic photosensitive drum that can be rotated;
a charging device, which charges the electrophotographic photosensitive drum;
and
a developing device, which develops a latent image formed on the electrophotographic photosensitive drum, with a developer,
wherein the electrophotographic photosensitive drum comprises:
a light emitting element matrix layer which includes:
a first electrode wire layer including multiple first electrode wires each extending in a circumferential direction of a cylindrical substrate and arrayed in a longitudinal direction of the cylindrical substrate so as to be separated from each other by an insulating member;
a second electrode wire layer including multiple second electrode wires each extending in the longitudinal direction of the cylindrical substrate and arrayed in the circumferential direction of the cylindrical substrate so as to be separated from each other by an insulating member;
and
an electroluminescence layer,
the first electrode wire layer, the electroluminescence layer, and the second electrode wire layer being stacked in the stated order from a side of the cylindrical substrate;
and
a functional separation portion which includes:
a transparent insulating layer provided on the light emitting element matrix layer;
and
a transparent conductive layer provided on the transparent insulating layer;
and
a photosensitive portion provided on the transparent conductive layer,
wherein each of the multiple first electrode wires is annularly formed with no seam.

16 more elements

Dependencies are inferred from the claim text.