Sheet feeding apparatus

Details Sheet feeding apparatus Sheet feeding apparatus

1998-04-20

2000-02-29

Skaggs, H. Grant

Sheet feeding or delivering

Feeding

Separators

271149, 271259, 221 13, 221 21, 221259, 902 15, 902 17, B65H 304

Patent

active

060299711

ABSTRACT:
A belt displacement operation is periodically carried by the pick mechanism 11 of a sheet feeding apparatus, when the number of sheets fed has reaches a predetermined value. The motor 34 is driven in reverse for a predetermined time, so as to cause rotation of the belt 28 in the opposite direction to that during feeding. Since the pick pulley 26 is supported on the shaft 38 by means of a one-way clutch 40 so that it does not rotate during the reverse rotation of the belt 28, displacement of the belt 28 occurs relative to the pick pulley 26, so that in subsequent pick operations, a different portion of the belt 28 engages the stack 18 so as to pick a sheet, than had displacement of the belt 28 not occurred. This reduces the risk of localized portions of the belt 28 becoming more worn than others, due to more frequent engagement with the stack 18.

REFERENCES:
patent: 3894732 (1975-07-01), Muller
patent: 4302000 (1981-11-01), Frank
patent: 4320854 (1982-03-01), Hirose
patent: 5890709 (1999-04-01), Phillips
Maliwacki, Document Picker Cam, IBM Technical Disclosure Bulletin vol. 11 No. 11, Apr. 1969, p. 1587.

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