1
Masaaki Kabumoto, Goro Katsuyama, Kanae Amemiya, Masahiro Kurita, Masahiro Yonekawa, Tomotoshi Nakahara, Masumi Sato, Takaaki Yanagisawa, Yoshio Hattori, Kouta Fujimori, Satoshi Muramatsu, Junichi Matsumoto: Color image forming apparatus and toner replenishing apparatus each including plural toner containers received in receiving member of setting part and toner containers therefor. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, January 14, 2003: US06507720 (99 worldwide citation)

A color image forming apparatus includes a main body and a toner container setting part configured to set a plurality of toner containers individually therein. Each toner container contains a toner of a different color, and the setting part includes a receiving member configured to receive the plura ...


2
Junichi Matsumoto, Takuji Okamoto, Masami Watanabe, Nobuhide Ishihara: Production process of olefin based polymers. Idemitsu Kosan, Oblon Spivak McClelland Maier & Neustadt, November 29, 1994: US05369196 (91 worldwide citation)

A process for effectively producing an alpha-olefin homopolymer or copolymer of two or more of alpha-olefins without using a great amount of an aluminum compound, is disclosed. In the process for producing a cyclic olefin based polymer according to the present invention, homopolymerization of an alp ...


3
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.


4
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 ...


5
Satoshi Muramatsu, Hideo Yoshizawa, Hideki Kimura, Kazuhisa Sudo, Yoshio Hattori, Junichi Matsumoto: Image formation device and agent supplying device including absorber conveying by negative pressure. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, November 30, 2004: US06826381 (63 worldwide citation)

A toner container contains a powdery toner. A powder pump conveys the toner in the toner container to a substantially closed, certain location using negative pressure. A toner conveyance tube conveys the toner from the container to the powder pump. An air pump supplies air into the toner container. ...


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
Takaaki Yanagisawa, Masumi Sato, Kazuhiko Yuuki, Akio Kosuge, Yoshinori Ozawa, Yoshi Hattori, Tomotoshi Nakahara, Kouta Fujimori, Satoshi Muramatsu, Junichi Matsumoto: Apparatus and method for replenishing a developing device with toner while suppressing toner remaining. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, May 20, 2003: US06567637 (58 worldwide citation)

A toner replenishing device includes a toner conveyance path for connecting a toner storing device with a developing device, a toner conveying device for conveying the toner from the toner storing device to the developing device along the toner conveyance path, and an air supplying device connected ...


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 ...