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Dive into the research topics where Katsuyuki Hirata is active.

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Featured researches published by Katsuyuki Hirata.


Archive | 1998

IMAGE FORMING APPARATUS WHICH EXCELS IN REPRODUCIBILITY OF COLORS, FINE LINES AND GRADATIONS EVEN IN A COPY MADE FROM A COPIED IMAGE

Yoshinobu Hada; Yukihiko Okuno; Masahiro Kouzaki; Kentaro Katori; Katsuyuki Hirata


Archive | 1997

Image forming device and method having MTF correction

Kentro Katori; Yoshinobu Hada; Masahiro Kouzaki; Yukihiko Okuno; Katsuyuki Hirata


Archive | 1997

Image forming apparatus having a noise removing unit

Kentaro Katori; Yoshinobu Hada; Masahiro Kouzaki; Yukihiko Okuno; Katsuyuki Hirata


Archive | 2004

Method and device for estimating toner concentration and image forming apparatus equipped with such device

Katsuyuki Hirata; Tetsuya Sakai; Tatsuya Isono; Hironori Akashi; Toshio Tsuboi; Takashi Harashima; Masaki Tanaka


Archive | 1996

Digital image forming apparatus which specifies a sensitivity characteristic of a photoconductor

Kentaro Katori; Toshifumi Watanabe; Yukihiko Okuno; Masaki Tanaka; Hironobu Nakata; Katsuyuki Hirata


Archive | 1997

Image forming apparatus having a saturation correction unit

Katsuyuki Hirata; Yoshinobu Hada; Kentaro Katori; Yukihiko Okuno; Masahiro Kouzaki


Archive | 1997

Image forming apparatus having an MTF correction unit

Masahiro Kouzaki; Yoshinobu Hada; Yukihiko Okuno; Kentaro Katori; Katsuyuki Hirata


Archive | 2007

Image forming apparatus and method for detecting separated state of transfer member

Masaki Tanaka; Katsuyuki Hirata; Mitsuru Obara; Toshio Tsuboi; Tatsuya Isono


Archive | 2001

Light quantity correction method for exposing device, and image forming device

Katsuyuki Hirata; Kentaro Katori; Tetsuya Sakai; Tomoki Wada


Archive | 1999

Method of and apparatus for forming an image

Katsuyuki Hirata; Kentaro Katori

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Hideaki Tanaka

National Institute of Advanced Industrial Science and Technology

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