Photocopying – Contact printing – Fluid pressure retention of carrier and receiver in exposure...
Patent
1990-02-08
1991-05-21
Wintercorn, Richard A.
Photocopying
Contact printing
Fluid pressure retention of carrier and receiver in exposure...
355132, G03B 2720, G03B 2702
Patent
active
050179608
ABSTRACT:
An apparatus for copying transparent and optionally mask films (19,20) onto a radiation sensitive plate (12) comprises a plate carrier (2) on which one or more radiation sensitive plates (12) and one or more transparent films (20) and optionally mask films (19) can be placed in predetermined mutual positions. The apparatus includes a contact frame (3) having means (18) for vacuum connecting the contact frame (3) to the plate carrier (2) and means (V1,V2) for vacuum connecting the transparent film(s) (20) and the mask film(s) (19) to a contact glass (16) of the contact frame (3). An exposure light (4) is provided for directing radiation through the transparent film(s) (20) and the mask film(s) (19) so as to copy them onto the radiation sensitive plate (12). The plate carrier (2) comprises a flexible support plate (8) which is connected to the apparatus frame (1) only along its outer edges, and which carries a flexible rubber blanket (10), which is connected to the support plate (8) only along its outer edges. The support plate (8) together with the rubber blanket (10) and the radiation sensitive plate (12) are able to bend convexly upwards under the influence of the vacuum and into contact with the contact frame (3) starting at the center of the contact frame (3) and thereafter successively proceeding out in all directions towards the edges of the contact frame (3) until there is a total contact.
REFERENCES:
patent: 3119318 (1964-01-01), Forester et al.
patent: 3922087 (1975-11-01), Dillow
patent: 4080068 (1978-03-01), Madigan et al.
patent: 4576475 (1986-03-01), Kitagawa et al.
patent: 4754309 (1988-06-01), Lesko
patent: 4812883 (1989-03-01), Ohlig
STD Engineering AB
Wintercorn Richard A.
LandOfFree
Exposure of radiation sensitive materials does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Exposure of radiation sensitive materials, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exposure of radiation sensitive materials will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-241904