Invention Grant
- Patent Title: Electrophotographic photoconductor, production method of the same, image forming apparatus, and process cartridge
- Patent Title (中): 电子照相感光体,其制作方法,成像设备和处理盒
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Application No.: US13256989Application Date: 2010-03-17
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Publication No.: US08795935B2Publication Date: 2014-08-05
- Inventor: Hidetoshi Kami , Junichi Yamazaki , Yukio Fujiwara , Kazuhiro Egawa
- Applicant: Hidetoshi Kami , Junichi Yamazaki , Yukio Fujiwara , Kazuhiro Egawa
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Cooper & Dunham LLP
- Priority: JP2009-063861 20090317; JP2009-199814 20090831
- International Application: PCT/JP2010/055145 WO 20100317
- International Announcement: WO2010/107130 WO 20100923
- Main IPC: G03G15/04
- IPC: G03G15/04

Abstract:
An electrophotographic photoconductor having a photosensitive layer and a crosslinked resin surface layer over a support, wherein shapes of concaves and convexes in a surface of the electrophotographic photoconductor are measured by a surface roughness/profile measuring device to obtain one-dimensional data arrays, the arrays are subjected to multiresolution analysis (MRA-1) through wavelet transformation to be separated into six frequency components including HHH, HHL, HMH, HML, HLH and HLL to obtain one-dimensional data arrays, the arrays of the HHL are thinned out to be reduced 1/10 to 1/100, thereby producing one-dimensional data arrays, which are then subjected to multiresolution analysis (MRA-2) through wavelet transformation to be separated into six frequency components including LHH, LHL, LMH, LML, LLH and LLL to thereby obtain 12 frequency components in total; and a center-line average roughness (WRa) of the 12 frequency components satisfies relationship (i) below. 1−597×WRa(HML)+238×WRa(HLH)−95×WRa(LHL)+84×WRa(LMH)−79×WRa(LML)+55×WRa(LLH)−17×WRa(LLL)>0 (i)
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