Title:
ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE-FORMING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2019/017160
Kind Code:
A1
Abstract:
A single photosensitive layer of this electrophotographic photoreceptor comprises a charge generating agent, a hole transport agent, an electron transport agent, and a binder resin. The charge generating agent is a phthalocyanine pigment. The content proportion of the phthalocyanine pigment is 0.70-1.40 mass% with respect to the mass of the photosensitive layer. The photosensitive layer has a film thickness of 25-32 μm. The difference ΔQ in charge amount is at most 6.50 μC. ΔQ is determined by mathematical formula (1): "ΔQ=Q1-Q2". In mathematical formula (1), Q1 and Q2 represent the charge amounts in a non-exposure region and an exposure region of the surface of the photosensitive layer, respectively. In the surface of the photosensitive layer charged to a charge potential of +600V, the exposure region is a portion that has been irradiated with exposure light in the wavelength of 780 nm by an exposure amount of 1.2 μJ/cm2, and the non-exposure region is a portion that has not been irradiated with light.
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Inventors:
SHIMIZU TOMOFUMI (JP)
Application Number:
PCT/JP2018/024139
Publication Date:
January 24, 2019
Filing Date:
June 26, 2018
Export Citation:
Assignee:
KYOCERA DOCUMENT SOLUTIONS INC (JP)
International Classes:
G03G5/06; G03G5/05
Domestic Patent References:
| WO2016199283A1 | 2016-12-15 |
Foreign References:
| JP2014092594A | 2014-05-19 | |||
| JP2014092582A | 2014-05-19 | |||
| JP2008224785A | 2008-09-25 | |||
| JP2008122740A | 2008-05-29 | |||
| JP2009128544A | 2009-06-11 | |||
| JP2004177703A | 2004-06-24 | |||
| JP2018025656A | 2018-02-15 |
Attorney, Agent or Firm:
MAEI Hiroyuki (JP)
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