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US 12,675,055 B2Granted
Electrophotographic photoreceptor, process cartridge, and image forming apparatus
AssigneeFUJIFILM Business Innovation Corp.
InventorMichinori Fukuma
Life of this patent
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Abstract
An electrophotographic photoreceptor includes a conductive substrate, an organic photosensitive layer, and an inorganic protection layer arranged in this order, the inorganic protection layer containing a metal oxide that contains oxygen atoms, gallium atoms, and aluminum atoms.
Claims17
An electrophotographic photoreceptor comprising:
- a conductive substrate;
- an organic photosensitive layer;
- and
- an inorganic protection layer arranged in this order, the inorganic protection layer containing a metal oxide that contains oxygen atoms, gallium atoms, and aluminum atoms,
- wherein the inorganic protection layer has a first region present on an outer peripheral surface side and a second region that is closer to the conductive substrate than the first region is to the conductive substrate, and
- a ratio IAl/(IGa+IAl) of an aluminum atomic weight fraction IAl to a total of a gallium atomic weight fraction IGa and the aluminum atomic weight fraction IAl as measured by X-ray photoelectron spectroscopy is larger in the second region than in the first region.
3 more elements
Dependencies are inferred from the claim text.