The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 24, 2025
Filed:
Feb. 03, 2023
Hirofumi Horita, Kanagawa, JP;
Akira Kunieda, Tokyo, JP;
Yohsuke Haraguchi, Kanagawa, JP;
Satoshi Kuno, Tokyo, JP;
Koju Kawakami, Tokyo, JP;
Yasunobu Kidoura, Kanagawa, JP;
Ryohsuke Akaishi, Kanagawa, JP;
Hirofumi Horita, Kanagawa, JP;
Akira Kunieda, Tokyo, JP;
Yohsuke Haraguchi, Kanagawa, JP;
Satoshi Kuno, Tokyo, JP;
Koju Kawakami, Tokyo, JP;
Yasunobu Kidoura, Kanagawa, JP;
Ryohsuke Akaishi, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A sheet feeder includes a sheet stacker, a sheet feed roller, a separation roller pair, and a lifter. Sheets are conveyed and stacked on the sheet stacker. The sheet feed roller feeds the sheets. The separation roller pair separates the sheets fed by the sheet feed roller one by one. The lifter lifts and lowers the sheet stacker depending on a stack amount of the sheets. The sheet stacker includes a first stacking face, a second stacking face, and a bent portion integrally connecting the stacking faces such that the stacking faces form a specified angle. The sheet stacker stacks the sheets such that a center of gravity of the sheets is positioned above the first stacking face and integrally displaces the stacking faces when the lifter operates.