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Ken Yokoyama patents

Recent patents with Ken Yokoyama listed as an inventor - additional entries may be under other spellings.


Ken Yokoyama - Related organizations: Canon Kabushiki Kaisha patents

Image forming apparatus

06/19/14 - 20140169840 - The image forming apparatus is capable of changing a state between a first state in which only a first image bearing member and transfer belt contact each other, and a second state in which respective image bearing members are separated from the transfer belt. A second transfer member is located
Inventors: Ken Yokoyama, Tsubasa Takeuchi

Color image forming apparatus having function of obtaining color information of patch

02/13/14 - 20140044444 - An image forming apparatus uses the difference in time taken for each patch to reach a color sensor, which occurs upon reversing the conveyance direction of a printing material. Due to this difference in time, the temperature of the printing material in detection by the color sensor differs among the
Inventors: Masatake Usui, Hiroshi Kita, Shun-ichi Ebihara, Ken Yokoyama

Color image forming apparatus

08/29/13 - 20130222858 - The color image forming apparatus includes a CPU configured to correct a result of detecting a toner patch by a density sensor based on a result of detecting a first white reference plate by the density sensor, and to control a density or chromaticity of a toner image based on
Inventors: Ken Yokoyama

Spectrocolorimeter and image forming apparatus

02/14/13 - 20130038867 - A spectrocolorimeter comprises: a calculation unit configured to calculate wavelengths of dispersing light rays respectively received by a plurality of pixels included in a light detection unit using a correspondence relationship between pixels and wavelengths of a plurality of extremal value points in a profile of dispersing light rays detected
Inventors: Shun-ichi Ebihara, Hiroshi Kita, Ken Yokoyama

Image forming apparatus that detects transition between patch images

08/30/12 - 20120219306 - An image forming apparatus includes a detection unit configured to irradiate a patch image formed on a recording material with light, and detect light intensities at a plurality of wavelengths in the light reflected from the patch image; and a determination unit configured to determine that a patch image for
Inventors: Hirotaka Shiomichi, Ryuhei Shoji, Ken Yokoyama

Image forming apparatus, image processing apparatus, image processing method, and recording medium

06/21/12 - 20120154832 - The present invention provides a mechanism that more appropriately evaluates an image defect caused by a specific process in an image forming apparatus. An image forming apparatus of this invention performs colorimetry of a patch image at a spatial resolution corresponding to the spatial frequency of color unevenness caused by
Inventors: Ken Yokoyama, Akihito Sonoda

Color image forming apparatus having function of obtaining color information of patch

09/08/11 - 20110217052 - An image forming apparatus uses the difference in time taken for each patch to reach a color sensor, which occurs upon reversing the conveyance direction of a printing material. Due to this difference in time, the temperature of the printing material in detection by the color sensor differs among the
Inventors: Masatake Usui, Hiroshi Kita, Shun-ichi Ebihara, Ken Yokoyama


### Ken Yokoyama patent invention listings

The bibliographic references displayed about Ken Yokoyama's patents are for a recent sample of Ken Yokoyama's publicly published patent applications. The inventor/author may have additional bibliographic citations listed at the USPTO.gov. FreshPatents.com is not associated or affiliated in any way with the author/inventor or the United States Patent/Trademark Office but is providing this non-comprehensive sample listing for educational and research purposes using public bibliographic data published and disseminated from the United States Patent/Trademark Office public datafeed. This information is also available for free on the USPTO.gov website. If Ken Yokoyama filed recent patent applications under another name, spelling or location then those applications could be listed on an alternate page. If no bibliographic references are listed here, it is possible there are no recent filings or there is a technical issue with the listing--in that case, we recommend doing a search on the USPTO.gov website.

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