Electrophotographic organic photoconductor
AssigneeMita Industrial Co., Ltd.
InventorsHideo Nakamori, Masashi Tanaka
Life of this patent
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Abstract
An electrophotographic organic photosensitive layer is formed by using a diphenoquinone derivative A and a diphenoquinone derivative B having a larger absolute value for reduction potential as electron transport materials. The diphenoquinone derivative A is, for example, 3,5-dimethyl-3',5'-di-t-butyl-4,4'-diphenoquinone. The diphenoquinone derivative B is, for example, 3,3',5,5'-tetra-t-butyl-4,4'-diphenoquinone. The diphenoquinone derivative B is included in the proportion of 3 to 50 wt % on the basis of the total weight of the electron transport materials (the diphenoquinone derivatives A and B).
Claims18
An electrophotographic organic photoconductor comprising a conductive substrate and an organic photosensitive layer formed on the conductive substrate,
- wherein the organic photosensitive layer is made of a resin composition including a charge generation material, a hole transport material, electron transport materials and a binding resin,
- the electron transport materials including a diphenoquinone derivative A and a diphenoquinone derivative B having a larger absolute value for reduction potential than that of the diphenoquinone derivative A, and the diphenoquinone derivative B is included in the proportion of 3 to 50 wt % on the basis of the total weight of the electron transport materials;
- the hole transport material having an ionization potential of 5.3 to 5.6 eV.
An electrophotographic organic photoconductor comprising a conductive substrate and an organic photosensitive layer formed on the conductive substrate,
- wherein the organic photosensitive layer is made of a resin composition including a charge generation material, a hole transport material, electron transport materials and a binding resin,
- the electron transport materials including a diphenoquinone derivative A and a diphenoquinone derivative B having a larger absolute value for reduction potential than that of the diphenoquinone derivative A, and the diphenoquinone derivative B is included in the proportion of 3 to 50 wt % on the basis of the total weight of the electron transport materials, and
- the electron transport material being included in the proportion of 10 to 80 wt % on the basis of the weight of the binding resin.
Dependencies are inferred from the claim text.