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US Patent 11256187 Process cartridge and electrophotographic apparatus

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Patent
Patent
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Patent attributes

Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
0
Patent Number
112561870
Patent Inventor Names
Yuzo Seino0
Kenta Kamikura0
Takashi Kenmoku0
Takeshi Murakami0
Harunobu Ogaki0
Kazunori Noguchi0
Date of Patent
February 22, 2022
0
Patent Application Number
169341590
Date Filed
July 21, 2020
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Patent Citations
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US Patent 10310396 Method of producing toner
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US Patent 10338487 Toner
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US Patent 10345726 Method of manufacturing toner
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US Patent 10353308 Toner
0
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US Patent 10401750 Toner
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US Patent 10429757 Toner
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US Patent 10503090 Toner
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US Patent 10539893 Toner
...
Patent Primary Examiner
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Mark A Chapman
0
Patent abstract

Provided are a process cartridge and an electrophotographic apparatus each of which is reduced in fogging for reducing a toner consumption. Specifically, provided is a process cartridge, which is removably mounted onto a main body of an electrophotographic apparatus, the process cartridge including: a developing unit containing a toner; and an electrophotographic photosensitive member, wherein the toner is a toner including a toner particle, and has a polyvalent acid metal salt on at least part of a surface of the toner particle, wherein the polyvalent acid metal salt includes at least one kind of metal element selected from metal elements belonging to from Group 3 to Group 13, and wherein a surface layer of the electrophotographic photosensitive member contains a resin including a siloxane segment.

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