Fuji Xerox Co., Ltd.

Fujifilm Business Innovation Corp.

Masaru Agatsuma

Kazuyuki Tada

Tomomasa Sato

Akihiko Nakamura

Tomotake Inagaki

Hiroaki Ogawa

Kenta Shingu

Takayuki Yamashita

Yoshifumi Shoji

Hiroshi Kimura

Naoki Morita

Kenji Ikeda

Hiroki Ando

Daisuke Haruyama

Hiroshi Tamemasa

Mamoru Fujita

Yasuki Tanaka

Shinya Yamamoto

Yuko Yamano

Takaakira Sasaki

Toshiyuki Suto

Toru Asahi

Shiori Okuda

Tsubasa Yamauchi

A coating device includes: a coating liquid holding part provided with an upper opening portion and a lower opening portion and holding a coating liquid that is supplied from a coating liquid supply part; and an annular body that is disposed inside the coating liquid holding part, through which a cylindrical body penetrating the upper opening portion and the lower opening portion of the coating liquid holding part penetrates, and in which the coating liquid held by the coating liquid holding part flows in from an upper side and flows out from a lower side with a relative movement to the cylindrical body, the annular body being installed to be relatively displaceable along an installation surface intersecting a direction of the relative movement with respect to the coating liquid holding part.

Coating device, coating method, and method for manufacturing photoconductor

A tubular metal body includes a tubular part having an opening at one end in an axis direction; and a bottom part disposed at another end of the tubular part in the axis direction. The ratio (Rz1/Rz2) of a surface roughness Rz1 of an outer peripheral surface of the bottom part to a surface roughness Rz2 of an outer peripheral surface of a center portion of the tubular part in the axis direction is in a range of 2 or more and 4000 or less. A Vickers hardness HV1 of the outer peripheral surface of the bottom part is 5 HV or more and 27 HV or less smaller than a Vickers hardness HV2 of the outer peripheral surface of the center portion of the tubular part in the axis direction.

Tubular metal body and electrophotographic photoreceptor

A support for dip coating, wherein the inner peripheral surface at an end in the axial direction of the support has an arithmetic average roughness Ra of 0.26 &#x3bc;m or less and a maximum height roughness Rz of 2.3 &#x3bc;m or less.

Support for dip coating, electrophotographic photoreceptor, process cartridge, and image forming apparatus

A conductive support for an electrophotographic photoreceptor includes a cylindrical member containing aluminum, wherein the cylindrical member has an arithmetic mean roughness Ra of 1.3 &#x3bc;m or less, a maximum height of roughness profile Rz of 5.0 &#x3bc;m or less, and a mean width of roughness profile elements RSm in an axial direction of 80 &#x3bc;m to 400 &#x3bc;m.

Conductive support for electrophotographic photoreceptor, electrophotographic photoreceptor, and process cartridge

A conductive support for an electrophotographic photoreceptor contains aluminum, in which the conductive support has a Young's modulus of from 32,000 MPa to 55,000 MPa.

Conductive support for electrophotographic photoreceptor, electrophotographic photoreceptor, image forming apparatus, and process cartridge

A cylindrical member includes aluminum, and has an average area of crystal particles of an outer circumferential surface which is smaller than an average area of crystal particles of an inner circumferential surface.

Cylindrical member, cylindrical member for image forming apparatus, electrophotographic photoreceptor, image forming apparatus, and process cartridge

An aspect of the present invention provides a method of manufacturing an electrophotographic photoreceptor. The method includes forming at least one layer selected from the group consisting of an undercoat layer, a photosensitive layer, and a protective layer, by jetting by an inkjet method a first coating liquid and a second coating liquid from liquid drop discharging heads which are different from each other, and mixing the first coating liquid and the second coating liquid on a conductive substrate. The first coating liquid and the second coating liquid react with each other when they are mixed.

Method of manufacturing electrophotographic photoreceptor, electrophotographic photoreceptor, image-forming apparatus, and process cartridge

The invention provides an electrophotographic photoreceptor having a cylindrical support, and a charge-generating layer and a charge-transporting layer on or above the cylindrical support, wherein the thickness of the charge-generating layer is increased from the central portion in the axial direction of the cylindrical support towards both end portions thereof, and the difference in thickness between the two end portions is 2.5% or less of an average thickness of the charge-generating layer. Also disclosed are a method of producing the electrophotographic photoreceptor, a process cartridge including the electrophotographic photoreceptor, and an image-forming apparatus.

Electrophotographic photoreceptor, method of producing the same, process cartridge, and image-forming apparatus

The invention provides an electrophotographic photoreceptor that includes a cylindrical support, and a charge-generating layer and a charge-transporting layer on the cylindrical support, wherein a content per unit volume of a charge-generating material in the charge-generating layer increases from a center portion in an axial direction of the cylindrical support towards both end portions thereof, and a thickness of the charge-generating layer in an axial direction of the cylindrical support is 95% or more and 105% or less relative to an average thickness of the charge-generating layer.

A coating apparatus comprises a coating vessel holding a coating liquid with a liquid leakage preventing member having an opening. A cylindrical member such as a cylindrical support for supporting a photosensitive member is inserted into the opening and the cylindrical member is moved relative to the coating liquid vessel in the vertical direction. A scraping member for scraping the coating liquid is at least partially immersed in the coating liquid, or is positioned above the surface of the coating liquid in the coating liquid vessel, the scraping member being almost concentric to the cylindrical member and movable in the radial direction of the cylindrical member. The cylindrical member is axially aligned with the scraping member using coating liquid pressure applied to the scraping member to coincide the center of the scraping member with the center of the cylindrical member. This invention provides an apparatus and method for forming a coated layer having a uniform layer thickness free of unevenness on the outer periphery of a cylindrical member such as an electrophotographic photosensitive support at a high production rate inexpensively.

Growing community of inventors

Kanagawa, Japan

Masaru Agatsuma