Ricoh Company, Ltd.

Takayuki Yoshii

Kohji Kamiya

Eiji Sawamura

Tsuneaki Kondoh

Norihiko Aze

Kyoichi Ashikawa

Michitaka Higaki

Naohiro Watanabe

Shigeru Emoto

Ryota Inoue

Masahide Yamada

Minoru Matsuo

Tsunemi Sugiyama

Akinori Saitoh

Masahiro Ohki

Shinichi Wakamatsu

Satoshi Tohkai

Nozomu Takahata

Hiroshi Yoshinaga

Makoto Nakamura

Masanao Ehara

Noriyuki Kamiya

Atsushi Ohta

Yoshiyuki Takano

Motokazu Hasegawa

Taisuke Tokuwaki

Hidenori Machida

A method and a device for coating a hollow cylindrical member. The method includes radially coating an entire inner surface of the hollow cylindrical member with a first coating material discharged by a first slit nozzle and simultaneously circularly coating an entire outer surface of the hollow cylindrical member with a second coating material discharged in an axial direction of the hollow cylindrical member by a second slit nozzle located opposite the first slit nozzle with the hollow cylindrical member therebetween. The first slit nozzle and the second slit nozzle discharge the first coating material and the second coating material, respectively, to a same height of the hollow cylindrical member relative to the inner surface and the outer surface thereof.

Method and device for coating hollow cylindrical member

An image forming apparatus includes a fixing unit for fixing a toner image on a recording medium. In at least one embodiment, the fixing unit includes a fixing member configured to heat and melt a toner. Further, in at least one embodiment, the fixing member has a surface contacting the toner image and includes a wettability not greater than 38 mN/m.

Fixing unit having a resin surface and image forming apparatus using the same

A toner is provided including a binder resin and a wax having primarily C&#x2014;H and C&#x2014;C bonds, and having a melting point of 50 to 90&#xb0; C., wherein the wax is present in a surface portion of the toner in an amount of from 0.1 to 4.0% by weight, wherein the amount of the wax is determined by Fourier transform infrared spectroscopy attenuated total reflectance (FTIR-ATR); and the use of the toner in an image forming method, image forming apparatus, developer and toner cartridge containing the toner.

Toner, developer, image forming method, image forming apparatus, process cartridge, and toner container

A fixing apparatus including at least one transfer and fixing member which is placed in contact with an image carrier and a recording medium and configured to transfer and fix an image on the image carrier to the recording medium, at least detection mechanism configured to detect a jam generated on the recording medium, a separation mechanism configured to contact the transfer and fixing member with and separate from the transfer and fixing member from the image carrier or recording medium, the separation mechanism being configured to separate the transfer and fixing member from the image carrier or recording medium when the jam on the recording medium is detected by the detection mechanism.

Fixing apparatus, fixing member used in the fixing apparatus, and image forming apparatus having the fixing apparatus

A coating film forming apparatus, which applies a paint to an outer circumferential face of an object to be coated to form a coating film, the coating film forming apparatus, includes: a retention section which retains the coated object in a state in which the outer circumferential face is exposed and in which an axial core of the coated object is in parallel with a vertical direction; an applying nozzle formed in an annular shape, arranged to oppose the outer circumferential face and to have an interval therebetween, and coaxially arranged with the coated object retained by the retention section, the applying nozzle having a first slit, which discharges the paint to an inner circumferential face formed throughout a whole circumference thereof; a movement section, which relatively moves the retention section and the applying nozzle along the axial core; a paint supply section which supplies the paint to the applying nozzle; and a gaseous body discharger which discharges a gaseous body toward the paint discharged in a conic shape from the first slit, evenly throughout a whole circumference in a circumferential direction of the discharged paint, to change a discharging direction of the paint.

Coating film forming apparatus, electrophotographic fixing member formed by coating film apparatus, and image forming apparatus having electrophotographic fixing member

An image forming apparatus includes a fixing unit for fixing a toner image on a recording sheet. The fixing unit includes a fixing belt, a support roller, and a coil. The fixing belt rotates and applies heat on the recording sheet to fix the toner image on the recording sheet. The support roller rotates and supports the fixing belt. The coil has a loop-like or U-like shape and generates a magnetic flux to induce heat in the fixing belt and the support roller. The coil sandwiches the support roller and the fixing belt in a manner that the coil faces an outer circumferential surface of the support roller via the fixing belt and an inner circumferential surface of the support roller. The above configuration of the coil controls a surface temperature of the fixing belt.

Method and apparatus for image forming capable of effectively fixing a toner image on a recording sheet by using induction heating

In a method for evaluating a fixing member to fix a toner having a surface layer, a hardness test is carried out by applying a pressure deformation from the surface side of the fixing member, and when a deformation of the surface layer by the pressure deformation is within an elastic range, the fixing member is regarded as a standard product.

Method for evaluating fixing member and fixing belt and thermal fixing roller

A fixing member includes a base member and an outermost layer located overlying the base member and having different fluororesins to fix a toner onto a sheet.

Flexible and durable fixing members and apparatus, and image forming apparatus

A development roller for developing a latent electrostatic image to a visible toner image with toner, including a surface layer which contains a guanamine-skeleton-containing compound.

Development roller

Growing community of inventors

Yokohama, Japan

Takayuki Yoshii