1
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 ...


2
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 ...


3
Yasuyuki Shinkai, Kiyoshi Sakai, Satoru Tomita, Mamoru Kiyota, Kohji Ichimiya, Yuichiro Kanoshima, Nekka Matsuura: Image forming apparatus having a supporting device for supporting imaging units. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, April 20, 2004: US06725003 (12 worldwide citation)

An image forming apparatus including a plurality of imaging units each for forming an image on a recording medium, an image carrier provided in each of the plurality of imaging unit, a development unit for visualizing an electrostatic latent image on the image carrier by toner in each of the plurali ...


4
Yasuyuki Nomizu, Hiroyuki Sakuyama, Junichi Hara, Nekka Matsuura, Takanori Yano, Taku Kodama, Toshio Miyazawa, Yasuyuki Shinkai, Takayuki Nishimura: Durable and undecipherable digital watermarking technique and detection of unauthorized use. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, August 5, 2008: US07409060 (11 worldwide citation)

A digital watermarking technique is disclosed, in which image data are converted to frequency components through discrete wavelet transform and quantized into a set of quantized coefficients, which are then divided into a plurality of blocks. A digital watermark is embedded in the quantized coeffici ...


5
Yasuyuki Nomizu, Hiroyuki Sakuyama, Junichi Hara, Nekka Matsuura, Takanori Yano, Taku Kodama, Toshio Miyazawa, Yasuyuki Shinkai, Takayuki Nishimura: Image processing apparatus, image reading apparatus, image forming apparatus and recording medium for image processing program. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, February 26, 2008: US07336852 (10 worldwide citation)

An image processing apparatus, an image reading apparatus, an image forming apparatus and a computer-readable recording-medium for storing an image processing program are disclosed. The image processing apparatus can synthesize coded data encoded in accordance with JPEG 2000 standard from source and ...


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Hiroyuki Sakuyama, Yasuyuki Nomizu, Junichi Hara, Taku Kodama, Nekka Matsuura, Yasuyuki Shinkai, Takanori Yano, Toshio Miyazawa, Takayuki Nishimura: Code conversion apparatus, code conversion method and storage medium. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, April 1, 2008: US07352907 (8 worldwide citation)

A code conversion apparatus includes an input section to input compressed and transformed input codes, a header information rewriting section to rewrite only header information within the codes so as to change a decoded state of the input codes, and an output section to output the codes, including r ...


8
Takayuki Nishimura, Yasuyuki Nomizu, Hiroyuki Sakuyama, Junichi Hara, Nekka Matsuura, Takanori Yano, Taku Kodama, Toshio Miyazawa, Yasuyuki Shinkai: Method for reversibly transforming data format, image processing apparatus, program for reversibly transforming data format, and computer-readable recording medium thereof. Ricoh Company, Blakely Sokoloff Taylor & Zafman, July 1, 2008: US07394470 (6 worldwide citation)

In a method for reversibly transforming a data format, a forward transformation and a backward transformation are reciprocally conducted for data between unit systems having different resolution levels, and the forward transformation and the backward transformation, a first unit system having a lowe ...


9
Yasuyuki Nomizu, Hiroyuki Sakuyama, Junichi Hara, Nekka Matsuura, Takanori Yano, Taku Kodama, Toshio Miyazawa, Yasuyuki Shinkai, Takayuki Nishimura: Image processing apparatus and image processing method, image processing system, image processing program and storage medium. Ricoh Company, Blakely Sokoloff Taylor & Zafman, November 11, 2008: US07450773 (6 worldwide citation)

An image processing apparatus includes an image data acquisition unit to acquire first encoded image data of a first data size, an image data creation unit to create a second encoded image data of a second, smaller data size than the first data size from the first encoded image data, a display unit ...


10
Takayuki Nishimura, Yasuyuki Nomizu, Hiroyuki Sakuyama, Junichi Hara, Nekka Matsuura, Takanori Yano, Taku Kodama, Toshio Miyazawa, Yasuyuki Shinkai: Scrambling of image by randomizing pixel values. Ricoh Copmany, Blakely Sokoloff Taylor & Zafman, November 6, 2007: US07293172 (6 worldwide citation)

An apparatus for coding an image while scrambling the image by randomizing pixel values includes a scrambling unit which scrambles an image by utilizing an encryption function to compute a displacement of a pixel value to be randomized in response to a displacement of a previously randomized pixel v ...