1
Masanori Saitoh, Nekka Matsuura, Nobuyuki Yanagawa: Image forming apparatus including components mounted and/or dismounted in selected order. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, January 6, 2004: US06674982 (44 worldwide citation)

An image forming apparatus of the present invention includes a plurality of components that form image forming means and should be mounted or dismounted in a preselected order. Following one of the components with respect to the preselected order cannot be dismounted from the apparatus until precedi ...


2
Yuichiro Kanoshima, Kohji Ichimiya, Satoshi Igari, Mamoru Kiyota, Nekka Matsuura, Yasuyuki Shinkai, Makoto Obu: Consumption information management apparatus, image formation apparatus, and consumption information management system. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, May 27, 2003: US06571071 (32 worldwide citation)

An integration density acquiring unit for a consumption information management apparatus acquires integration density from an image signal sent from an image processing section, and an information converting unit calculates a quantity of consumed toner (consumption information) by multiplying the in ...


3
Nekka Matsuura, Yukiko Yamazaki, Takahiro Yagishita: Image processing system for compressing image data including binary image data and continuous tone image data by a sub-band transform method with a high-compression rate. Ricoh Company, October 1, 2002: US06459816 (29 worldwide citation)

An image processing system which compresses an image including both a binary image and a continuous tone image by a sub-band transform method with a high compression rate. A 2×2 pixel matrix block is extracted from image data. A transform factor having a plurality of frequency components is obtained ...


4
Nekka Matsuura, Hisashi Shoji, Satoshi Ouchi, Katsuaki Miyawaki, Osamu Satoh, Masaaki Yamada, Shuji Hirai, Yoshinori Nakagawa, Yasushi Nakazato, Tomoko Takahashi, Takashi Seto, Seiji Hoshino: Abnormality determining method, and abnormality determining apparatus and image forming apparatus using same. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, September 19, 2006: US07110917 (27 worldwide citation)

An abnormality determining apparatus includes an information storage unit for storing normal index information serving as an index of a normal state of the detection subject, an information obtaining unit for obtaining a plurality of types of information, and an abnormality determining unit for dete ...


5
Kazuhiko Watanabe, Kazuhito Watanabe, Yasuo Suzuki, Nozomu Tamoto, Hiroshi Nakai, Takahiko Tokumasu, Kohichi Ohshima, Nekka Matsuura: Image forming apparatus using a contact or a proximity type of charging system including a protection substance on a moveable body to be charged. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, September 5, 2006: US07103301 (27 worldwide citation)

An image forming apparatus of the present invention includes a movable body to be charged and a charger including a charging member that contacts or adjoins the body to be charged and applies a voltage, including an AC component, to the charging member for thereby charging the body. A protection sub ...


6
Shogo Oneda, Takahiro Yagishita, Yukiko Yamazaki, Nekka Matsuura: Image processing method and apparatus to select a data compression method according to a size of an output image. Ricoh, Oblon Spivak McClelland Maier & Neustadt P C, February 11, 2003: US06519052 (27 worldwide citation)

An image processing apparatus for inputting image data from an external image input device and outputting the inputted image data to an external image output device after processing the data, the image processing apparatus including a data compression device for compressing the inputted image data b ...


7
Hisashi Shoji, Tsukuru Kai, Kei Yasutomi, Nekka Matsuura, Nobutaka Takeuchi, Hirokatsu Suzuki: Image forming apparatus. Ricoh Company, Oblon Spivak McCelland Maier & Neustadt P C, June 29, 2004: US06757509 (26 worldwide citation)

An electrophotographic image forming apparatus of the present invention frees images from various defects including the thinning of horizontal lines, the omission of the trailing edge an image, background contamination, granularity particular to a halftone image, carrier scattering, and image noise. ...


8
Nekka Matsuura: Image data encoding/decoding method and apparatus configured to compress both natural gray scale images and binary images. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, April 18, 2000: US06052205 (26 worldwide citation)

Image data encoding/decoding method and apparatus uses a first data divider for dividing image data into--by n-pixel blocks, two data encoders for encoding an--by n-pixel block into a first data block including frequency data elements and into a second data block including an image density, location ...


9
Takahiro Yagishita, Yukiko Yamazaki, Nekka Matsuura, Hiromi Okubo, Hiroyuki Shibaki, Hiroshi Ishii: Method and apparatus for image processing for performing a color conversion. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, April 29, 2003: US06556707 (25 worldwide citation)

An image processing apparatus includes a converter, a calculator and a reverse converter. The converter performs a frequency conversion operation on a color image signal which includes a brightness signal and color signals and divides values of each of the brightness signal and the color signals int ...


10
Minoru Ameyama, Satoru Tomita, Yasuyuki Shinkai, Nekka Matsuura, Katsuichi Ohta, Naoya Morohoshi, Akihisa Itabashi, Takanori Yano, Katsuhiro Aoki: Image formation unit including stored performance information. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, March 16, 2004: US06707480 (24 worldwide citation)

A plurality of types of engine units which have nonvolatile storage units and which have different performances, respectively, can be attached to an image formation apparatus main body in a replaceable manner. A control unit which controls the performance of an overall apparatus based on information ...