METHOD OF PURIFYING CHARGE TRANSPORT SUBSTANCE, ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS

Title:

METHOD OF PURIFYING CHARGE TRANSPORT SUBSTANCE, ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS

Document Type and Number:

Japanese Patent JP2005162620

Kind Code:

A

Abstract:

To provide a method of efficiently purifying a charge transport substance for an electrophotographic photoreceptor having excellent properties, and an electrophotographic photoreceptor which excels in printing resistance and the stability on repeated copying.

The method of purifying a charge transport substance comprises using a continuous column chromatograph. The electrophotographic photoreceptor contains the purified charge transport substance in a sensitized layer. A process cartridge and an electrophotographic apparatus contain the electrophotographic photoreceptor.

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Inventors:

TANAKA TAKAKAZU
OGAKI HARUNOBU
KAKO KENICHI
YOSHIDA AKIRA

Application Number:

JP2003399888A

Publication Date:

June 23, 2005

Filing Date:

November 28, 2003

Export Citation:

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Assignee:

CANON KK

International Classes:

G03G5/00; C07C209/84; C07C211/54; C07C211/61; C07C213/10; C07C215/82; C07D209/88; C07D213/74; C07D215/38; C07D307/91; C07D333/76; G03G5/06; (IPC1-7): C07C209/84; C07C211/54; C07C211/61; C07C213/10; C07C215/82; C07D209/88; C07D213/74; C07D215/38; C07D307/91; C07D333/76; G03G5/00; G03G5/06

Attorney, Agent or Firm:

Keizo Nishiyama
Yuichi Uchio

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