Intelligent autonomous sheet feeder for the infeed of a printer

Details Intelligent autonomous sheet feeder for the infeed of a printer Intelligent autonomous sheet feeder for the infeed of a printer

2007-02-27

2007-02-27

Mackey, Patrick (Department: 3653)

Sheet feeding or delivering

Feeding

Separators

C271S124000, C271S121000

Reexamination Certificate

active

10314521

ABSTRACT:
Disclosed herein is a sheet feeder for a printer. The sheet feeding device feeds a single sheet into an infeeder of a printer without communicating with the printer. The sheet feeder is equipped with a sensor for detecting when the printer is able to accept a sheet. The sheet feeder is equipped with a programmable timing device that causes the sheet feeder to wait a predetermined amount of time before inserting another sheet into the printer. The predetermined amount of time corresponds to the amount of time needed for the printer to complete printing on a sheet after the sensor has detected that the printer is able to accept a sheet into the infeeder of the printer. The sheet feeder is configured with a gate having an adjustable gap in close proximity to a tray containing a stack of sheets. The gate permits only a single sheet to be fed into the infeeder of the printer at a time. The gate has a guide post having a radius of curvature curving toward the gap to urge the stack of sheets toward the gap in the gate. The sheet feeder has an adjustable tray designed to compensate for non-uniform profiles of a stack of sheets. The adjustable tray urges the stack of sheets into the gap in an upward motion to prevent jamming of the sheets in the sheet feeding device.

REFERENCES:
patent: 4957243 (1990-09-01), Kanagaki et al.
patent: 4961566 (1990-10-01), Labombarde
patent: 5026042 (1991-06-01), Miller
patent: 5401013 (1995-03-01), Hurd et al.
patent: 5924686 (1999-07-01), Jacobson et al.
patent: 6193230 (2001-02-01), Tung-Ying
patent: 6435499 (2002-08-01), Tomatsu
patent: 6794633 (2004-09-01), Iwasaki

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