Fuji Xerox Co., Ltd.

Fujifilm Business Innovation Corp.

Noriaki Kojima

Kei Tanaka

Daisuke Tano

Masato Ono

Yoshinori Takahashi

Tsutomu Sugimoto

Yu Nakamura

Hiroaki Akamatsu

Yuichi Omori

Nobukazu Takahashi

Masao Okubo

Makoto Sakanobe

Hiroyuki Koide

Shintaro Kikuchi

Yuko Kawase

Koichi Tanaka

Takatoshi Ishikawa

Satoshi Shigezaki

Nobuo Hyakutake

Yukio Hayashi

Yoshinori Nakano

Jin Iwasaki

Yuichi Fukuda

Nobuyoshi Komatsu

Takashi Kawabata

Keiji Yamamoto

Takashi Fuchiwaki

Hiroe Okuyama

Yasunori Unagida

Masahiro Katahira

Hiromi Nagai

Yasushi Kawahata

Kazunori Numao

Katsuya Takenouchi

Kazuhisa Masuko

Masao Ohkubo

Makoto Katayama

A cleaning component that cleans an image holding section having a high-hardness surface layer, the cleaning component including: a plate-shaped cleaning member coming into contact with a surface of the image holding section, in which a portion of the cleaning member coming into contact with the surface of the image holding section has 100% modulus equal to or more than 7 Mpa and rebound resilience equal to or less than 30%, as physical properties.

Cleaning component, cleaning apparatus using same, process cartridge, and image forming apparatus

An image forming apparatus includes an image carrier, a first peel-off unit whose end portion is in contact with the image carrier and that peels off a recording medium from the image carrier, and a second peel-off unit whose end portion is not in contact with the image carrier and that peels off a recording medium from the image carrier. The second peel-off unit is disposed in such a way that the end portion thereof is located at a position that is the same as or upstream of a position of the end portion of the first peel-off unit in a rotation direction of the image carrier, and the second peel-off unit is movable so that the end portion thereof moves away from the image carrier.

Image forming apparatus having peel-off units

An image forming apparatus includes: an image carrying unit that carries an image to be transferred to a sheet which is brought into contact with the image carrying unit and passed through; a separation unit that separates the sheet from the image carrying unit; and a removal unit that comes into contact with the image carrying unit, and removes toner remaining after the sheet passes through the separation unit. A non-transferred toner image that is not transferred to the sheet is formed in a range, where the separation unit is not present, of the image carrying unit.

Image forming apparatus

A peeling device includes a peeling member and a cover member. The peeling member peels a recording medium, to which an unfixed developer has been transferred from an image holding member, from the image holding member. The leading end of the peeling member contacts the image holding member. The cover member covers a surface of the peeling member with a gap interposed between the peeling member and the cover member. The surface of the peeling member includes at least the leading end of the peeling member, and includes at least a surface of the peeling member on the side opposite to the image holding member.

Peeling device and image forming apparatus

A cleaning member includes a base member comprised of a first material that has a peak temperature of tan &#x3b4; less than approximately zero degrees Celsius and a contact portion comprised of a second material that has a higher hardness than the first material and a tear strength of approximately 49 kilonewtons per meter or higher, the contact portion contacting an image carrier and cleaning the image carrier.

Cleaning member and image forming apparatus

A cleaning blade includes a polyurethane member that constitutes at least a contact portion that comes in contact with a member to be cleaned. The polyurethane member contains a polyurethane containing a hard segment component and a soft segment component. The hard segment component has a domain particle size of about 45 nm or more and about 100 nm or less.

Cleaning blade, process cartridge, and image forming apparatus

Disclosed is a cleaning blade of which a contact portion brought into contact with at least a member to be cleaned is formed of a polyurethane member that includes a polyurethane material containing a hard segment and a soft segment and has a ratio of an area occupied by a hard segment aggregate having a diameter of 0.3 &#x3bc;m to 0.7 &#x3bc;m in a cross section being in a range of 2% to 10%.

A cleaning member includes a body and an edge. The body has rubber hardness of about 68 to 75 degrees and is fixed to a support member at one end of the body. The body has a plate-like shape in which a corner portion of the body is missing. The edge is provided at the corner portion and fits into it. The edge is in contact with a subject to be cleaned and has a thickness of about 0.1 to 1 mm. The cleaning member satisfies the following conditions:80&#x2266;&#x2266;90;&#x2267;&#x2212;40+95; and&#x2266;&#x2212;40110where x denotes a ratio of a length of the edge in a predetermined direction to a length of a portion of the body which is not fixed to the support member in the predetermined direction, and y denotes rubber hardness of the edge.

Developing device and image forming apparatus including cleaning member and cleaning member

A cleaning blade includes a portion which comes in contact with a member to be cleaned, and the portion is configured of a member containing polyurethane rubber having a structure derived from polyester polyol in which a first diol component having 10 or more carbon atoms and a second diol component having 5 or less carbon atoms are condensed with dicarboxylic acid at a molar ratio (first diol component/second diol component) of 50/50 to 80/20, a structure derived from polyisocyanate, and a structure derived from a triol.

Cleaning blade, cleaning device, and image forming apparatus

A charging member includes a contact section and a supported section. The contact section is in contact with a charged body. The supported section is integrated with the contact section and is supported by a support member. The supported section has a lower hardness than the contact section.

Charging member, charging device, detachable body, and image forming apparatus

An image forming apparatus includes an image holding member, a developing device which accommodates a toner which contains at least one type of external additive having an average particle size of 0.02 &#x3bc;m or greater, and toner particles having a surface with the external additive externally added thereto, and forms an image developed with the toner on a surface of the image holding member, a transfer device which transfers the developed image formed on the image holding member onto a recording medium, and a cleaning device which is provided with a cleaning blade constituted by a member in which at least a part which is brought into contact with the image holding member has a dynamic micro hardness of from 0.25 to 0.65, and brings the cleaning blade into contact with the surface of the image holding member after transfer of the developed image to perform cleaning.

Image forming apparatus and process cartridge including cleaning blade

Provided is a cleaning blade including a contacting corner portion which comes in contact with and cleans a surface of a member to be cleaned moving relative to the cleaning blade, a tip surface which configures one side with the contacting corner portion and faces an upstream side of the surface moving direction, a ventral surface which configures one side with the contacting corner portion and faces a downstream side, and a rear surface which shares one side with the tip surface and opposes the ventral surface.

Cleaning blade with a contacting layer, cleaning device, process cartridge and image forming apparatus

A cleaning blade includes a contact portion that contacts a member to be cleaned, and the contact portion at least contains polyurethane rubber and has at least two different endothermic peak temperatures by differential scanning calorimetry in a range of 100&#xb0; C. or higher.

Cleaning blade, cleaning device, process cartridge, and image forming apparatus

Provided is a cleaning blade in which at least a portion which comes in contact with a member to be cleaned is configured of a member having dynamic ultra micro hardness of from 0.25 to 0.65 and an index K acquired in the following Equation (1) of equal to or more than 15:index=[23&#xb0; C. breaking elongation (%)]&#xd7;[10&#xb0; C. impact resilience (%)]&#xd7;(&#x2212;1)&#xd7;[tan &#x3b4; peak temperature (&#xb0; C.)]/[Young's modulus (MPa)]/1000&#x2003;&#x2003;Equation (1).

Provided is a cleaning blade having at least a portion that comes in contact with a member to be cleaned is configured of a member that contains polyurethane rubber, and that has an endothermic peak top temperature obtained by differential scanning calorimetry in a range of from 180&#xb0; C. to 220&#xb0; C.

Growing community of inventors

Kanagawa, Japan

Noriaki Kojima