TY

Takuhei Yokoyama

Ricoh Company: 19 patents #1,131 of 9,818Top 15%
Overall (All Time): #233,830 of 4,157,543Top 6%
19
Patents All Time

Issued Patents All Time

Showing 1–19 of 19 patents

Patent #TitleCo-InventorsDate
12153838 Image forming apparatus, system, and method for detecting malfunction Ayumu HASHIMOTO, Shogo Nakamura, Akito YOSHIMURA, Masaki Yoshino, Keiji Kunimi 2024-11-26
11457121 Reading device, image forming apparatus, and color mixture prevention method Masamoto Nakazawa, Tadaaki OYAMA, Ayumu HASHIMOTO 2022-09-27
10542184 Photoelectric conversion device, defective pixel determining method, image forming apparatus, and recording medium Hiroki Shirado, Masamoto Nakazawa 2020-01-21
9302497 Optical writing device, image forming apparatus, and method of controlling optical writing device Masayuki Hayashi, Yoshinori Shirasaki, Kunihiro Komai, Hiroaki Ikeda, Takeshi Shikama +3 more 2016-04-05
9268284 Image forming device and control method for image forming device Yoshinori Shirasaki, Tatsuya Miyadera, Masayuki Hayashi, Kunihiro Komai, Motohiro Kawanabe +3 more 2016-02-23
9141893 Image forming apparatus and method for controlling the same Akinori Yamaguchi, Masayuki Hayashi, Hiroaki Ikeda, Kunihiro Komai, Tatsuya Miyadera +3 more 2015-09-22
9013532 Light source control apparatus and image forming apparatus Kunihiro Komai, Masayuki Hayashi, Hiroaki Ikeda, Takeshi Shikama, Akinori Yamaguchi +3 more 2015-04-21
8885213 Imaging forming apparatus Tatsuya Miyadera 2014-11-11
8879969 Image forming apparatus including image forming calibration Takeshi Shikama, Masayuki Hayashi, Kunihiro Komai, Tatsuya Miyadera, Motohiro Kawanabe +3 more 2014-11-04
8817320 Line-head control device, image forming apparatus, and line-head control method Yoshinori Shirasaki, Izumi Kinoshita, Kunihiro Komai, Tatsuya Miyadera, Takeshi Shikama +1 more 2014-08-26
8774700 Image processing apparatus, an image forming apparatus, an image processing method and a recording medium Takeshi Shikama, Tatsuya Miyadera, Izumi Kinoshita, Kunihiro Komai, Yoshinori Shirasaki +1 more 2014-07-08
8659630 Image processing apparatus, image processing method, and computer program product for image processing Kunihiro Komai, Izumi Kinoshita, Tatsuya Miyadera, Yoshinori Shirasaki, Takeshi Shikama +1 more 2014-02-25
8654419 Image forming apparatus and image density detecting method Susumu Miyazaki, Izumi Kinoshita, Motohiro Kawanabe, Takeshi Shikama, Tatsuya Miyadera 2014-02-18
8600283 Method of compensating for errors caused by a print head using skew correction Izumi Kinoshita, Tatsuya Miyadera, Motohiro Kawanabe, Takeshi Shikama, Susumu Miyazaki 2013-12-03
8576267 Optical writing device, image forming apparatus, optical writing method, and computer-readable recording medium Motohiro Kawanabe, Tatsuya Miyadera, Masayuki Hayashi, Kunihiro Komai, Yasuo Yamaguchi +4 more 2013-11-05
8547409 Light emission control device, light emission control method, and image forming apparatus Izumi Kinoshita, Kunihiro Komai, Tatsuya Miyadera, Yoshinori Shirasaki, Takeshi Shikama +1 more 2013-10-01
8482588 Optical writing device, image forming apparatus, and method and program product for controlling optical writing device Tatsuya Miyadera, Kunihiro Komai, Izumi Kinoshita, Yoshinori Shirasaki, Takeshi Shikama +1 more 2013-07-09
8411124 Optical writing device, image forming apparatus, and method and program product for controlling optical writing device Izumi Kinoshita, Kunihiro Komai, Tatsuya Miyadera, Yoshinori Shirasaki, Takeshi Shikama +1 more 2013-04-02
8294744 Optical writing device, image forming apparatus, method of controlling optical writing device, and computer program product Izumi Kinoshita, Kunihiro Komai, Tatsuya Miyadera, Yoshinori Shirasaki 2012-10-23