Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
First Claim
1. An electrophotographic photosensitive member, comprising:
- a support;
a charge-generating layer on the support;
a charge-transporting layer on the charge-generating layer; and
a protective layer on the charge-transporting layer, the protective layer comprising components (α
), (β
), and (γ
);
(α
) a polymer of a hole-transportable compound represented by formula (A)
1 Assignment
0 Petitions
Accused Products
Abstract
Provided is an electrophotographic photosensitive member, including: a support; a charge-generating layer on the support; a charge-transporting layer on the charge-generating layer; and a protective layer on the charge-transporting layer, wherein the protective layer contains the following components (α), (β), and (γ): (α) a polymer of a hole-transportable compound; (β) a polycarbonate resin; and (γ) a hole-transportable compound, wherein a content of the component (β) in the protective layer is 0.01 mass % or more and 4.0 mass % or less with respect to a content of the component (α) in the protective layer, wherein a content of the component (γ) in the protective layer is 0.001 mass % or more and 3.0 mass % or less with respect to the content of the component (α) in the protective layer, and wherein the charge-transporting layer contains the component (γ).
18 Citations
12 Claims
-
1. An electrophotographic photosensitive member, comprising:
-
a support; a charge-generating layer on the support; a charge-transporting layer on the charge-generating layer; and a protective layer on the charge-transporting layer, the protective layer comprising components (α
), (β
), and (γ
);(α
) a polymer of a hole-transportable compound represented by formula (A) - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A process cartridge, comprising:
-
an electrophotographic photosensitive member and at least one unit selected from the group consisting of a charging unit, a developing unit and a cleaning unit; the process cartridge integrally supporting the electrophotographic photosensitive member and the at least one unit, and being removably mounted onto a main body of an electrophotographic apparatus; the electrophotographic photosensitive member comprising a support, a charge-generating layer on the support, a charge-transporting layer on the charge-generating layer, and a protective layer on the charge-transporting layer; and the protective layer comprising components (α
), (β
), and (γ
);(α
) a polymer of a hole-transportable compound represented by formula (A)
-
-
12. An electrophotographic apparatus, comprising:
-
an electrophotographic photosensitive member and at least one unit selected from the group consisting of a charging unit, an exposing unit, a developing unit and a transferring unit; the electrophotographic photosensitive member comprising a support, a charge-generating layer on the support, a charge-transporting layer on the charge-generating layer, and a protective layer on the charge-transporting layer; and the protective layer comprising components (α
), (β
), and (γ
);(α
) a polymer of a hole-transportable compound represented by formula (A)
-
Specification
-
- Resources
-
Current AssigneeCanon Kabushiki Kaisha (Canon Inc.)
-
Original AssigneeCanon Kabushiki Kaisha (Canon Inc.)
-
InventorsTakahashi, Koji, Murakami, Mai, Saito, Yoshihisa
-
Primary Examiner(s)Chapman, Mark A
-
Application NumberUS15/996,741Publication NumberTime in Patent Office484 DaysField of Search430 66US Class CurrentCPC Class CodesG03G 21/1803 Arrangements or disposition...G03G 5/0618 containing oxygen and nitrogenG03G 5/0672 containing two or more meth...G03G 5/071 obtained by reactions only ...G03G 5/072 comprising pending monoamin...G03G 5/075 obtained otherwise than by ...G03G 5/14734 Polymers comprising at leas...G03G 5/14756 PolycarbonatesG03G 5/14786 Macromolecular compounds ch...G03G 5/14795 Macromolecular compounds ch...
