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.

Date of Patent:
Jul. 10, 2012

Filed:

Mar. 11, 2011
Applicants:

Hiroshi Wada, Osaka, JP;

Toshio Hori, Osaka, JP;

Yoshiaki Tashiro, Osaka, JP;

Hironori Daigo, Osaka, JP;

Seiji Okada, Osaka, JP;

Yuichiro Tanaka, Osaka, JP;

Nobuhiro Nishioka, Osaka, JP;

Inventors:

Hiroshi Wada, Osaka, JP;

Toshio Hori, Osaka, JP;

Yoshiaki Tashiro, Osaka, JP;

Hironori Daigo, Osaka, JP;

Seiji Okada, Osaka, JP;

Yuichiro Tanaka, Osaka, JP;

Nobuhiro Nishioka, Osaka, JP;

Assignee:
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B65H 1/12 (2006.01); B65H 1/08 (2006.01);
U.S. Cl.
CPC ...
Abstract

A sheet feeder has a tray on which a sheet to be fed is to be placed. A lift plate is at a feeding end of the tray and has a first end at an upstream side in a feeding direction connected rotatably to the tray. The lift plate is displaceable between a feeding posture where a second end at a downstream side in the feeding direction is lifted up and a retracted posture where the second end is lower than in the feeding posture due to its own weight. A biasing member gives a biasing force to an elevating member in a direction to lift the lift plate to the feeding posture. A lowering mechanism gives a pressing force against the force of the biasing member to lower the lift plate to the retracted posture.


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