Photographic apparatus for using roll films

US4340292A · kind A · utility

Assignee

• Carl Koch · CH

Inventors

• Carl Koch · Cincinnati, US
• Rolf Meyer · Wennigsen (Deister), DE
• Richard Zehnder · Eschenz, CH

Key dates

• Filing date: May 20, 1981
• Grant date: Jul 20, 1982
• Expiry date: May 20, 2001

Classification

• Technology area (CPC G): Physics
• CPC primary: G03B17/305
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A roll film cassette facilitating the loading of film in ordinary light conditions without risk of exposure comprises a housing, a window adjacent one end of the housing, a film supply spool for unexposed film and a take-up spool for exposed film at the window end of the housing, and a reversing roller at the opposite end of the housing. The two spools are incorporated into a common spool-holder unit bodily attachable in and removable from the housing. The parts of the spool-holder unit for mounting the supply spool include a light-tight sleeve with an opening for the insertion and removal of the spool. The opening has a hinged door-like lid and an axial slot for the accommodation of a leader portion of the film.