Sheet feeding apparatus and image forming apparatus

Sheet feeding or delivering – Feeding – Pack holders

Reexamination Certificate

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Details

C271S145000

Reexamination Certificate

active

07059597

ABSTRACT:
A sheet supply apparatus includes a sheet supply tray for stacking a sheet, and an auxiliary tray movable between a support position where the auxiliary tray supports a portion of the sheet stacked on the sheet supply tray and a storage position where the auxiliary tray overlaps the sheet supply tray. A sheet supply device supplies the sheet stacked on the sheet supply tray. A sheet detection device is mounted on the auxiliary tray for detecting the sheet stacked on the sheet supply tray, and a tray position detection device detects a position of the auxiliary tray between the support position and the storage position. An identifying device identifies a length of the sheet in a sheet supply direction based on detection results of the sheet detection device and the tray detection device.

REFERENCES:
patent: 5121169 (1992-06-01), Kawabata
patent: 6014229 (2000-01-01), Yun
patent: 6116590 (2000-09-01), Yokoyama et al.
patent: 6805345 (2004-10-01), Furukawa
patent: 2004/0051234 (2004-03-01), Lien et al.
patent: 2005/0051947 (2005-03-01), Furukawa
Patent Abstracts of Japan; Publication No. 62-049344 Published on Mar. 4, 1987; Applicant: Sharp Corp.
Patent Abstracts of Japan; Publication No. 08-091745 Published on Apr. 9, 1996; Applicant: Canon Inc.
Patent Abstracts of Japan; Publication No. 07-097102 Published on Apr. 11, 1995; Applicant: Sharp Corp.

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