Printing – Antismut device – Contact preventers
Patent
1987-06-05
1989-06-06
Crowder, Clifford D.
Printing
Antismut device
Contact preventers
271195, B41F 1308
Patent
active
048361046
ABSTRACT:
A sheet transfer mechanism comprising a gripper bar which engages the leading edge of a freshly printed sheet to move the sheet along a curved path and a sheet guide member having a guide surface formed thereon which has a radius of curvature significantly less than the radius of curvature of the curved path to guide the sheet along the path while the printed surface of the sheet is separated from the guide surface by an air cushion. At least a portion of the guide surface on the guide member is rough to carry a boundary layer of air. The guide surface is positioned relative to a vane to form an air chamber having an air dispensing passage such that rotation of the guide member forces air through the chamber and through the dispensing passage in a direction generally perpendicular to the guide surface to assure that the freshly printed surface on the sheet does not contact the trailing edge of the guide surface. Orifices through the guide surface communicate with the air chamber to deliver streams of air through the guide surface.
REFERENCES:
patent: 1201788 (1916-10-01), Yetter
patent: 2730950 (1956-01-01), Grassi
patent: 2736106 (1956-02-01), Offen
patent: 3308522 (1967-03-01), Miller
patent: 3542358 (1970-11-01), Schuhmann
patent: 4402267 (1983-09-01), DeMoore
patent: 4552069 (1985-11-01), Jahn
patent: 4572073 (1986-02-01), Mitze et al.
patent: 4688784 (1987-08-01), Wirz
patent: 4694750 (1987-09-01), Greene
Crowder Clifford D.
Duarte Products, Inc.
LandOfFree
Sheet transfer mechanism for a freshly printed sheet does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sheet transfer mechanism for a freshly printed sheet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sheet transfer mechanism for a freshly printed sheet will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-32297