Vacuum blanket lifting apparatus

Details Vacuum blanket lifting apparatus Vacuum blanket lifting apparatus

1993-10-28

1995-06-13

Wintercorn, Richard A.

Photocopying

Contact printing

Fluid pressure retention of carrier and receiver in exposure...

355 94, G03B 2720

Patent

active

054248051

ABSTRACT:
Vacuum frame apparatus is provided for maintaining precise registration between and an image forming sheet to be reproduced and a light sensitive sheet adapted for controlled exposure to light. The apparatus includes a light transmitting glass panel having a planar surface for contact with the image sheet and a vacuum blanket assembly including a blanket of thin, flexible sheet material adapted to contact the light sensitive sheet and bias the sheets toward the planar surface of the glass panel while maintained in precise registration. The vacuum blanket assembly includes a peripheral edge seal around the blanket for sealing engagement with the planar face of the glass panel and means for evacuating the space inside the peripheral edge bead between the planar face of the panel and the blanket of the vacuum blanket. A novel platen system is provided for moving the vacuum blanket and sheets thereon bodily toward the glass panel in a direction perpendicular thereto to engage the peripheral edge bead in a floating manner whereby the sealing pressure is equal along the entire length thereof. Thereafter a vacuum can be rapidly drawn between the sheets, the vacuum blanket and the planar surface of the glass panel.

REFERENCES:
patent: 4551016 (1985-11-01), Maher et al.
patent: 4935773 (1990-06-01), Meacham
patent: 4967230 (1990-10-01), Meacham
patent: 5072257 (1991-12-01), Stoesser et al.

Affiliated with

Also associated with

Rating

Vacuum blanket lifting apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Vacuum blanket lifting apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vacuum blanket lifting apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1313852