Patent · US Expired

Camera back

US4568163A · kind A · utility

4Cited by

13References

11Claims

0Family size

Assignee

Polaroid Corporation · US

Inventors

Frank M. Czumak · Salem, US
Joseph A. Stella · Peabody, US
Joseph H. Wright · Marblehead, US

Key dates

Filing date	Nov 28, 1984
Grant date	Feb 4, 1986
Priority date	—
Expiry date	Nov 28, 2004

Classification

Technology area (CPC G)Physics
CPC primaryG03B17/52
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Apparatus, e.g., a camera back, for locating a film cassette containing a plurality of individual, pre-mounted transparency film frames of the self-developing type in position for exposure. The apparatus includes a lighttight chamber into which the film frames are moved subsequent to their exposure. After the exposure of one or more of the film frames, the apparatus may be coupled to a film processor wherein the exposed film frames are individually removed from the lighttight chamber, processed, and delivered to the operator. The apparatus also includes a film advancing member which automatically removes a dark slide from the film cassette as it is being loaded into the apparatus.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.