Sheet supplying device and image forming device

Details Sheet supplying device and image forming device Sheet supplying device and image forming device

2004-06-22

2009-06-23

Mackey, Patrick H (Department: 3653)

Sheet feeding or delivering

Feeding

Separators

Reexamination Certificate

active

07549630

ABSTRACT:
A sheet supplying device has: a base; a tray; a feed roller provided rotatably at the base and positioned above the tray. When the feed roller rotates while frictionally engaging with a topmost sheet of the stack of sheets, the feed roller can convey the sheet. The sheet supplying device further includes a driving mechanism able to drive the feed roller to rotate; an urging member urging the tray toward the feed roller; a first eccentric cam rotatably provided at the base, and including a large-radius outer peripheral portion and a small-radius outer peripheral portion, the first eccentric cam rotating interlockingly with rotation of the feed roller; and a second eccentric cam rotatably provided at the tray, and including a large-radius outer peripheral portion and a small-radius outer peripheral portion, the second eccentric cam being able to engage with the first eccentric cam.

REFERENCES:
patent: 7270323 (2007-09-01), Somemiya
patent: 2004/0256789 (2004-12-01), Hsu
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patent: 11-255345 (1999-09-01), None
patent: 2001-278461 (2001-10-01), None
patent: 2002-274664 (2002-09-01), None
patent: 2002-332125 (2002-11-01), None

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