IP Library › Granted Patent US 9,753,384
Granted Patent B2
US 9,753,384 · App. 15/133,915 · Granted Sep 5, 2017

Photoconductor, electrophotographic method, electrophotographic apparatus, and electrophotographic process cartridge

Inventors: Eiji Kurimoto (Shizuoka, JP); Tetsuro Suzuki (Shizuoka, JP); Tomoharu Asano (Kanagawa, JP); Daisuke Nii (Shizuoka, JP); Toshihiro Ishida (Shizuoka, JP)
Assignee: Ricoh Company, Ltd.
G03G5/0517G03G5/0507G03G5/144G03G15/75G03G21/18
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Quick Facts
Patent No.
US 9,753,384
App. No.
15/133,915
Granted
Sep 5, 2017
Kind
B2
Abstract

Provided is a photoconductor including a conductive support, an intermediate layer containing metal oxide particles, and a photoconductive layer. The intermediate layer and the photoconductive layer are provided over the conductive support in the order of reciting. An elastic power (We/Wt value) of the intermediate layer is greater than or equal to 20.0% but less than 35.0%. A Martens hardness (HM) of the intermediate layer is greater than or equal to 350 [N/mm 2 ] but less than 450 [N/mm 2 ].

Claims (25)

1. A photoconductor comprising;

a conductive support;

an intermediate layer that comprises metal oxide particles; and

a photoconductive layer,

the intermediate layer and the photoconductive layer being provided over the conductive support in an order of reciting,

wherein an elastic power (We/Wt value) of the intermediate layer is greater than or equal to 20.0% but less than 35.0%, and

wherein a Martens hardness (HM) of the intermediate layer is greater than or equal to 350 [N/mm 2 ] but less than 450 [N/mm 2 ].

2. The photoconductor according to claim 1 , wherein the intermediate layer comprises:

zinc oxide particles coated with a salicylic acid derivative; and

a thermosetting resin.

3. The photoconductor according to claim 2 ,

wherein an average particle diameter of the zinc oxide particles is greater than or equal to 50 nm but less than or equal to 200 nm.

4. The photoconductor according to claim 1 ,

wherein a film thickness of the intermediate layer is greater than or equal to 10 μm but less than 50 μm.

5. An electrophotographic method comprising

subjecting the photoconductor according to claim 1 to charging, image exposing, developing, and transferring.

6. An electrophotographic apparatus comprising:

a charging unit;

an image exposing unit;

a developing unit;

a transfer unit; and

the photoconductor according to claim 1 .

7. An electrophotographic process cartridge comprising

the photoconductor according to claim 1 .

8. The photoconductor according to claim 1 , wherein the metal oxide particles comprise zinc oxide particles coated with a salicylic acid.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 20, 2016
From: KURIMOTO, EIJI; SUZUKI, TETSURO; ASANO, TOMOHARU; NII, DAISUKE; ISHIDA, TOSHIHIRO
To: RICOH COMPANY, LTD.
Reel/Frame 038334/0699 →
Priority Claims (1)
JP 2015-095866 · May 8, 2015 · national
Continuity (1)
Related Publication 20160327877A1 · Nov 10, 2016