Photocopying – Projection printing and copying cameras – Detailed holder for original
Patent
1978-07-31
1980-01-01
Hix, L. T.
Photocopying
Projection printing and copying cameras
Detailed holder for original
G03B 2762
Patent
active
041814282
ABSTRACT:
The invention relates to a compound for holding photographic slides or negatives for reproduction thereof or for the production of special effects. The compound may be used with most reproduction or special effects cameras now available and is provided with movable table portions which are subject to micrometer adjustment for accurate positioning of the slide relative to the camera. In addition the table portions are rotatable relative to a base portion which is actually mounted adjacent the camera light source. Of particular interest is the device utilized to hold a slide in the compound. It includes a platen base which may be removably received in the uppermost compound table portion. The platen base is provided with at least three registration pins for mating with corresponding ones of the usual sprocket holes or perforations in a slide. Each pin is rectangular in cross-section with the major dimension of each being equal to one of the dimensions of length or width of a slide perforation. Preferably one pin has its major dimension equal to the length of a perforation while the other two pins have their major dimension equal to the width of a perforation. The minor dimension of each pin is of course less than the corresponding dimension of a slide perforation. By using these pins the slide is accurately held on the platen base and there is little chance of damaging the slide. Also positionable on the platen base is a release plate having openings through which the registration pins may pass. A platen is provided as well, the slide being sandwiched between the release plate and platen before being positioned on the platen base. Thus the slide is accurately held between the release plate and the platen on the platen base and the entire assembly may be readily assembled to or removed from the compound as required without damage to the slide.
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Brady W. J.
Hix L. T,.
Optical Art Camera Corporation
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