1
Junichi Matsumoto, Nobuo Kasahara, Nobuo Iwata, Satoshi Muramatsu, Tomoyuki Ichikawa, Yoshio Hattori, Tomotoshi Nakahara, Takaaki Yanagisawa, Masumi Sato, Kouta Fujimori, Kazuhisa Sudo: Toner supply unit and image forming apparatus. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, September 30, 2003: US06628908 (88 worldwide citation)

The toner supply unit is provided with a preventing unit for preventing toner contamination due to toner leakage from that sealing valve. A mouth ring of the toner container is provided with the sealing valve. This valve is opened/closed by removing/inserting a nozzle.


2
Junichi Matsumoto, Nobuo Kasahara, Satoshi Muramatsu, Nobuo Iwata, Takaaki Yanagisawa, Tomotoshi Nakahara, Masumi Sato, Yoshio Hattori, Kouta Fujimori, Kazuhisa Sudo: Nozzle having an end portion capable of penetrating into a toner discharging portion included in a toner container that stores powdery toner. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, May 21, 2002: US06393241 (83 worldwide citation)

A toner conveying device for an image forming apparatus includes a nozzle capable of penetrating into a toner container when the toner container is mounted to the image forming apparatus. The nozzle has a tubular structure forming an air passage for sending air into the toner container and a toner p ...


3
Nobuo Iwata: Image processing device. Fuji Xerox, Oliff & Berridge, August 17, 2004: US06778289 (75 worldwide citation)

When a user wishes to print a document available in a server (E


4
Tadashi Shinohara, Yasushi Nakazato, Toshiya Sato, Mitsugu Sugiyama, Nobuo Iwata, Motonori Hanada, Hideo Nakagawa: Color image forming apparatus. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, April 30, 2002: US06381435 (69 worldwide citation)

An image forming apparatus includes a plurality of image formation units which print an image of different color on a paper and also form positional deviation detection marks and image density regulation marks, on a conveyer belt or on at least one of a recording medium and an intermediate transfer ...


5
Nobuo Iwata, Toshiya Sato, Tadashi Shinohara, Yutaka Shio: Image forming apparatus eliminating influence of fluctuation in speed of a conveying belt to correction of offset in color registration. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, February 23, 1999: US05875380 (64 worldwide citation)

An image processing apparatus eliminates a detection error in a color offset detecting operation due to a periodic fluctuation in a speed of a conveying belt which conveys a transfer sheet on which color component images are transferred and superimpose to form a multi-color image. A plurality of ima ...


6
Satoshi Muramatsu, Junichi Matsumoto, Nobuo Kasahara, Nobuo Iwata: Developer container for an image forming apparatus. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, September 30, 2003: US06628915 (63 worldwide citation)

A developer container storing a developer of the present invention includes a developer outlet formed in the side wall thereof, and a shutter member for selectively opening or closing the developer outlet. The shutter member opens the developer outlet when the developer container is mounted to the b ...


7
Nobuo Iwata, Mitsugu Sugiyama, Toshiya Satoh, Tadashi Shinohara, Yutaka Shio, Tomonori Yabuta: Color image forming apparatus and method of obtaining color images with decreased image positional deviation. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, August 28, 2001: US06282396 (58 worldwide citation)

An apparatus and method of forming a color image on a recording sheet by transferring respective images onto a single recording sheet conveyed by a conveying belt, where the combination of the respective images form the color image. The respective color images are formed with a plurality of electrop ...


8
Goro Katsuyama, Nobuo Iwata, Nobuo Kasahara, Satoshi Muramatsu, Junichi Matsumoto: Image forming device, powder feeding device, toner storage container, powder storage container, and method of recycling the containers. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, October 2, 2007: US07277664 (56 worldwide citation)

A part of a toner supply path is formed in a setting unit, and a nozzle coupled to a toner container is provided, wherein the fitting direction of the toner container to the setting unit and the coupling direction of the nozzle to the toner container are different.


9
Satoshi Muramatsu, Nobuo Iwata, Nobuo Kasahara, Junichi Matsumoto, Tomoyuki Ichikawa: Powder pump capable of effectively conveying powder and image forming apparatus using powder pump. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, July 22, 2003: US06597883 (56 worldwide citation)

A powder pump includes a stator having a through hole that includes two spirally extended grooves, and a rotor, which is rotatably provided to the through hole of the stator and is spirally extended such that a cavity to convey a powder is formed between an outer peripheral surface of the rotor and ...


10
Satoshi Muramatsu, Nobuo Kasahara, Nobuo Iwata, Junichi Matsumoto, Tomoyuki Ichikawa: Method and apparatus for image forming capable of effectively transferring various kinds of powder. Ricoh, Oblon Spivak McClelland Maier & Neustadt P C, April 1, 2003: US06542707 (52 worldwide citation)

A powder pump includes a stator and a rotor. The stator has a through-hole formed with two grooves extended in a stator spiral form. The rotor is rotated inside the through-hole of the stator. The rotor extends in a rotor spiral form such that spaces for accommodating a powder are formed between an ...