Electrophotographic photoreceptor, process cartridge, and image forming apparatus
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United States of America Patent
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Jan 9, 2018
Issued Date -
N/A
app pub date -
Jul 8, 2016
filing date -
Mar 16, 2016
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An electrophotographic photoreceptor includes an electroconductive substrate, an organic photosensitive layer on the electroconductive substrate and an inorganic protective layer on the organic photosensitive layer, wherein a layer that forms a surface of the organic photosensitive layer contains a charge transporting material, a binder resin, and a silica particle; the inorganic protective layer contains a group 13 element, an oxygen atom, and a hydrogen atom; a sum of element constitution ratios of the group 13 element, the oxygen atom, and the hydrogen atom to all elements constituting the inorganic protective layer is equal to or more than 90 atomic %; and an element composition ratio (oxygen atom/group 13 element) of the oxygen atom and the group 13 element is 1.0 or more and less than 1.5.
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