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:
Jul. 18, 2000
Filed:
Jan. 30, 1998
Applicant:
Inventors:
Masashi Matsumoto, Kahoku-gun, JP;
Hirohito Mukaiyama, Kahoku-gun, JP;
Assignee:
PFU Limited, Ishiwara, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B65H / ;
U.S. Cl.
CPC ...
271161 ;
Abstract
A paper feed unit having a paper tray or hopper where recesses or windows are formed on a bottom surface of the tray upon which the sheets of paper will rest. The recesses are at positions which can correspond to the positions of a plurality of roller pieces mounted on a roller shaft thereabove. The recesses enable the pressing force of each roller piece of the roller against the upper surface of the uppermost sheet of paper to be uniform.