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US 10,209,639 B2Granted
Photoconductor, image forming apparatus, and process cartridge
AssigneeRicoh Company, Ltd.
InventorsTomoharu Asano, Tetsuro Suzuki, Eiji Kurimoto, Daisuke Nii, Toshihiro Ishida
Life of this patent
Estimating the term…
Abstract
A photoconductor including a conductive support, an undercoat layer, a charge-generating layer, and a charge-transporting layer, at least the undercoat layer, the charge-generating layer, and the charge-transporting layer being disposed on the conductive support in an order mentioned, wherein the undercoat layer includes a binder resin and metal oxide particles, and the charge-generating layer includes a binder resin, a titanyl phthalocyanine pigment, and a salicylic acid derivative.
Claims4
A photoconductor comprising:
- a conductive support;
- an undercoat layer;
- a charge-generating layer;
- and
- a charge-transporting layer,
- wherein at least the undercoat layer, the charge-generating layer, and the charge-transporting layer are disposed on the conductive support in that order,
- wherein the undercoat layer comprises a binder resin, and metal oxide particles, and a salicylic acid derivative,
- wherein metal oxide particles comprise at least one oxide selected from the group consisting of titanium oxide, zinc oxide, tin oxide, and zirconium oxide,
- wherein the charge-generating layer comprises a binder resin, a titanyl phthalocyanine pigment, and a salicylic acid derivative, wherein the salicylic acid derivative comprised in the charge-generating layer is at least one selected from the group consisting of 3,5-di-t-butylsalicylic acid, 3-aminosalicylic acid, and 3,5-dinitrosalicylic acid, and
- wherein the salicylic acid derivative comprised in the undercoat layer is at least one selected from the group consisting of 3,5-di-t-butylsalicylic acid, 3-aminosalicylic acid, and 3,5-dinitrosalicylic acid, wherein an amount of the salicylic acid derivative in the undercoat layer is from 1 part by mass to 3 parts by mass, based on 100 parts by mass of metal oxide particles.
7 more elements
Dependencies are inferred from the claim text.