Photographic system accessory for small format film sheets
US4227789A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 1978 |
| Grant date | Oct 14, 1980 |
| Priority date | — |
| Expiry date | May 2, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/52
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An accessory for use in an instant camera designed for standard film packs and by which the same camera can be used to expose and process self-processing film sheet assemblies of reduced image format size prepackaged in corresponding sized film packs. The accessory is in the nature of a U-shaped housing having exterior planar dimensions to complement the interior planar dimensions of a well in the camera for receiving a standard film pack. The U-shaped configuration of the housing defines a recess to receive and position the modified film pack of reduced size. The accessory carries movement transmitting relays by which actuation of a camera mounted switch is energized by insertion of the modified film pack and by which movement of a camera carried pick is transmitted to an accessory pick for initial ejecting movement of an exposed film sheet from the modified pack. The accessory pick is actuated preferably by a camera pick movement amplifier to accommodate the reduced exterior dimensions of the reduced format film sheet. Also, a viewfinder mask is provided as an adjunct to the accessory so that a viewed image will be collated with the reduced image format of film sheets in the modi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.