EP 0066471 A1 19821208 - Sheet feeding apparatus.
Title (en)
Sheet feeding apparatus.
Title (de)
Blattzuführvorrichtung.
Title (fr)
Appareil pour l'alimentation en feuilles.
Publication
Application
Priority
- US 26916781 A 19810602
- US 26916881 A 19810602
- US 26916981 A 19810602
Abstract (en)
Disclosed herein is a vacuum transport means for feeding sheets along a predetermined path into abutment with a registration member. To minimize damage to the leading edge of the sheet by the registration member, yet assure reliable transport of the sheets to the registration member, the vacuum transport means is provided with two vacuum plenums (82, 84), one upstream in the sheet path relative to the other. Vacuum control means are provided to control the relative level of vacuum supplied to the respective plenums so that the upstream plenum applies a relatively high vacuum force to a sheet presented to the transport means for feeding, and so that the downstream plenum applies a lesser vacuum force to the sheet during transport, thereby a sheet can slip relative to the vacuum transport belt when the sheet's leading edge engages the registration member (34). The vacuum control additionally functions to decrease the vacuum supplied to the upstream plenum at a time when a sheet is transported under the influence of the downstream plenum.
IPC 1-7
IPC 8 full level
B65H 5/22 (2006.01)
CPC (source: EP)
B65H 5/224 (2013.01); B65H 2406/322 (2013.01); B65H 2406/323 (2013.01)
Citation (search report)
- [A] DE 2039860 B2 19730222
- [A] DE 2905988 A1 19790830 - MATSUO MASAHARU
- [A] GB 1578119 A 19801105 - DRG LTD
- [AD] US 4169674 A 19791002 - RUSSEL MATTHEW J [US]
- [AD] US 4179215 A 19791218 - HAGE CHARLES T [US]
- [AD] US 4243316 A 19810106 - GUSTAFSON GARY B
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0066471 A1 19821208; EP 0066471 B1 19850410; DE 3262961 D1 19850515
DOCDB simple family (application)
EP 82302794 A 19820528; DE 3262961 T 19820528