Tetsuya Ofuchi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
Abstract: A sheet feeder, which is incorporated in an image forming apparatus, includes a sheet container, a sheet conveying member disposed facing a sheet stack that includes multiple sheet members loaded on the sheet container to separate an uppermost sheet member placed on the sheet stack from the other sheet members and to convey the uppermost sheet member, and a pressing member switchable between a pressing position to press the sheet stack from above and a retracted position to separate from the sheet stack.
October 23, 2014
April 30, 2015
RICOH COMPANY, LTD.
Takahiro OGINO, Tetsuya OFUCHI, Yasuyuki SEKINO, Kohtaroh ODA
Abstract: An image forming apparatus includes a sheet feed unit having a sheet feed port, an image forming unit, a sheet position detector, a mode selector, and a memory unit. The sheet feed unit feeds a recording sheet. The image forming unit forms an image on the recording sheet. The sheet position detector detects a sheet edge of the recording sheet. The mode selector selects at least one of the position correction mode and non-correction mode for the sheet feed port. An image forming position on the recording sheet is corrected using position information detected by the sheet position detector when the position correction mode is selected, and the image forming position on the recording sheet is not corrected when the non-correction mode is selected. A memory unit may store a plurality of values of light intensity and threshold value corresponding to different types of recording sheets.
April 19, 2006
October 19, 2006
Noriaki Fukube, So Ohta, Tetsuya Ofuchi