Sheet feeding or delivering – Feeding – Separator and conveyor
Patent
1993-08-09
1995-08-15
Skaggs, H. Grant
Sheet feeding or delivering
Feeding
Separator and conveyor
27126502, 271 1006, B65H 500
Patent
active
054412471
ABSTRACT:
An apparatus and method for feeding cut sheets to an end device such as a printer or duplicator is disclosed. The feeding apparatus has a sheet storage assembly with a feeder mechanism. Sheets are removed from the storage assembly and delivered to a staging assembly having a sheet directing portion and a cassette interface portion. Each portion has a sheet transport surface to define an overall transport surface. The cassette interface portion has an exposed sheet conveyor characterized as a first exposed pinch roller being mechanically linked to a second pinch roller. Sheets are delivered to the sheet directing portion in response to a first sheet sensor located at the transport surface of the sheet directing portion activating the feeder mechanism. The delivered sheets are caused to engage the upstream pinch roller which conveys a first sheet to a holding position on the sheet directing portion. Once at the holding position, further conveyance is stopped by way of a second sheet sensor located at the transport surface of the cassette interface indicating that a sheet is present thereon. A second sheet is then delivered to the sheet directing portion and caused to engage the first sheet in an underlapping relationship and also engage the upstream pinch roller. Advancement of the first sheet in response to the end device causes the mechanically linked first and second pinch rollers to advance both sheets together. The second sheet then replaces the first sheet in a similar position and the process is repeated.
REFERENCES:
patent: 3947016 (1976-03-01), Horung et al.
patent: 4702466 (1987-10-01), DuBois
patent: 4838534 (1989-06-01), Ishikawa et al.
Druzbick Carol L.
EMF Corporation
Evans Stephen M.
Garrison David L.
Skaggs H. Grant
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