Photocopying – Projection printing and copying cameras – Detailed holder for photosensitive paper
Patent
1993-02-22
1995-01-17
Wintercorn, Richard A.
Photocopying
Projection printing and copying cameras
Detailed holder for photosensitive paper
101378, 1014151, 226 93, 271276, 355 47, G03B 2760
Patent
active
053830016
ABSTRACT:
A rotatable drum for use in a plotter, or similar device, that provides vacuum for holding the film or other media to the drum's surface, so as to easily accommodate films of various sizes. The drum includes first and second journals and a plate mounted on the circumference of the first and second journals. At least one of the journals has defined on its circumference circumferential channels. The plate has interior and exterior sides, and the first and second journals and a portion of the plate's interior side define a chamber. The plate's exterior side has defined thereon a plurality of grooves. In one embodiment, at least one of the grooves, associated with a first film size, is in fluid communication with the chamber, and some of the remaining grooves, associated with the larger film sizes, are in fluid communication with the channels. A vacuum is supplied to the chamber, and a valve is provided for controlling fluid communication between the channels and the chamber.
REFERENCES:
patent: 4005653 (1977-02-01), Arkell
patent: 4056057 (1977-11-01), Smith
patent: 5183252 (1993-02-01), Wolber et al.
Intergraph Corporation
Wintercorn Richard A.
LandOfFree
Vacuum drum for mounting media of different sizes 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 drum for mounting media of different sizes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vacuum drum for mounting media of different sizes will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-750491