Minolta Camera Kabushiki Kaisha

Minolta Company, Ltd.

Toyo Ink Mfg. Co., Ltd.

Mitsutoshi Sakamoto

Hideaki Ueda

Keiichi Inagaki

Shigeaki Tokutake

Kimiyuki Ito

Yuki Shimada

Hiroshi Sakai

Teiko Edo

Teiko Yamaguchi

The present invention provided a photosensitive member for electrophotography having excellent durability and adhesion between a surface protective layer and a photosensitive layer. In the photosensitive member for electrophotography wherein at least the photosensitive layer and the surface protective layer are laminated on an electroconductive support in this order, the characteristic is that said surface protective layer comprises at least polysiloxane and silyl group-containing vinyl resin.

Photosensitive member for electrophotography with specic surface protective layer

An electrophotographic photosensitive member is provided which does not involve any image noise occurrence, such as black spot or white spot under any environment. The electrophotographic photosensitive member comprises a photoreceptor substrate including an anodized layer formed on the surface of an aluminum or aluminum alloy base, the anodized layer having been sealed by a low temperature sealing treatment and a high temperature sealing treatment, and at least one photosensitive layer formed on the photoreceptor substrate.

Substrate for photosensitive member, photosensitive member, production

In an image forming method in which an image is formed through the charging, exposing, developing, transferring, and charge eliminating steps using an amorphous silicon photoreceptor having an amorphous silicon photosensitive layer, an image forming method according to the present invention is so adapted that letting t1 be a time period from the charging step to the developing step and t2 be a time period from the charge eliminating step to the charging step, the value of t2/t1 is not less than one.

Image forming method

This invention relates to a photosensitive member with a charge generating layer and a charge transporting layer laminated on an electrically conductive substrate, in which the charge transporting layer comprises a charge transporting material and an aniline derivative represented by the following general formula [I] below; ##STR1## in which R.sub.1 and R.sub.2 are respectively an alkyl group or an aralkyl group, each of which may have a substituent; R.sub.3 -R.sub.7 are respectively a hydrogen atom, an alkyl group, an alkoxy group, a hydroxy group, an aryl group, an aralkyl group or a halogen atom.

Photosensitive member comprising specific aniline derivative

This invention relates to a photosensitive member having a laminated photosensitive layer constituted by a charge generating layer and a charge transporting layer on an electrically conductive substrate, wherein the charge generating layer comprises a phthalocyanine compound as a charge generating material and an additive selected from the group consisting of indoles having a primary amino group, indazoles having a primary amino group, planar monocyclic compounds of five-membered ring or more having a primary amino group, anthrones represented by the general formula [I] below and acridones represented by the general formula [II] below; ##STR1## wherein n and m are an integer of 0-3 respectively; R.sub.1 and R.sub.2 are independently an alkyl group, an alkoxy group, an amino group, a hydroxy group, a halogen atom or a nitro group; when n is 2 or more, each R.sub.1 may be same or different; when m is 2 or more, each R.sub.2 may be same or different.

Photosensitive member having phthalocyanine compound and additive

This invention relates to a photosensitive member having a photosensitive layer wherein the photosensitive layer comprises a charge generating material, a phthaloperinone compound represented by the general formula [I] or [I'] below, and/or naphthalimide represented by the general formula [II] or ]II'] below; ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are respectively a hydrogen atom, an alkyl group, an amino group, a hydroxy group, a halogen atom, a nitro group, or a cyano group; R.sub.6 is a hydrogen atom, an alkyl group or an aryl group; Z is a residual group forming a condensed aromatic cyclic ring with a benzene ring and Z may have a substitutent.

Photosensitive member containing phthaloperinone or naphthalimide

The present invention relates a photosensitive member which has a charge generating layer comprising specific phthalocyanine as a charge generating material and specific resin as a binder, and/or a charge transporting layer comprising specific hydrazone compounds as a charge transporting material and dyes as an absorbent for undesired lights.

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Osaka, Japan

Mitsutoshi Sakamoto