Browse Prior Art Database

Sheet Feed Control

IP.com Disclosure Number: IPCOM000079687D
Original Publication Date: 1973-Aug-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 27K

Publishing Venue

IBM

Related People

Machmer, JA: AUTHOR

Abstract

Sheet 10 is fed by vacuum conveyor 11 to the nip 12 of a pair of rolls 13 and 14, whose operation is synchronized with the arrival of the lead edge 15 of sheet 10. There may be a tendency for sheet 10 to adhere to one or the other of rolls 13 and 14. The lead edge 15 of sheet 10 moves into gripping notches 16 at the lateral edges of roll 14, so as to be positively retained thereby. Cutout 17 in roll 13 provides clearance for gripping projections 16. Gripping projections 16 assure that the sheet 10 will be stripped from the surface of roll 13.

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Sheet Feed Control

Sheet 10 is fed by vacuum conveyor 11 to the nip 12 of a pair of rolls 13 and 14, whose operation is synchronized with the arrival of the lead edge 15 of sheet
10. There may be a tendency for sheet 10 to adhere to one or the other of rolls 13 and 14. The lead edge 15 of sheet 10 moves into gripping notches 16 at the lateral edges of roll 14, so as to be positively retained thereby. Cutout 17 in roll 13 provides clearance for gripping projections 16. Gripping projections 16 assure that the sheet 10 will be stripped from the surface of roll 13.

Cutout 18 in roll 14 receives a resilient stripper finger IS that buckles the lead edge 15 out of its entrapment, by gripping projection 16 and strips the sheet 10 from the surface of roll 14. Stationary guide 20 prevents the lead edge 15 of sheet 10 from moving back into contact with the surface of roll 13.

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