US Patent 8465889 Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
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Patent abstract
To provide an electrophotographic photosensitive member that can reproduce good images with less positive ghost and also has a good photosensitivity, the electrophotographic photosensitive member is incorporated in its photosensitive layer with a copolymer having a repeating structural unit represented by the formula (1) and a repeating structural unit represented by the formula (2), or a copolymer having a repeating structural unit represented by the formula (1) and a repeating structural unit represented by the formula (3).Z1-A-Z2-E1 (1)Z3-A-Z4—W2—B2—W2 (2)Z5—B3—Z6-E4 (3)
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Patent Inventor Names
Akihiro Maruyama0
Hideaki Nagasaka0
Kunihiko Sekido0
Michiyo Sekiya0
Shinji Takagi0
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US Patent 08465889 Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus US Patent 8465889 Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
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Patent Number
084658890
Patent Number
84658890
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Is a
Patent Jurisdiction
Patent Number
084658890
Date of Patent
June 18, 2013
0Patent Application Number
131430520
Date Filed
January 29, 2010
0Patent Primary Examiner
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US Patent 08465889 Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
Infobox
Is a
Patent jurisdiction
Patent number
08465889
Date of patent
June 18, 2013
Patent application number
13143052
Date Filed
January 29, 2010
Patent primary examiner
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