Patent · US Expired

Photographic film unit with integral structure

US4242443A · kind A · utility

2Cited by

8References

15Claims

0Family size

Assignee

AGFA-Gervaert AG · DE

Inventors

Hermann Luhrig · Leverkusen, DE
Guido Kovacic · Unkel, DE
Horst-Peter Muller · Cologne, DE

Key dates

Filing date	Oct 1, 1979
Grant date	Dec 30, 1980
Priority date	—
Expiry date	Oct 1, 1999

Classification

Technology area (CPC G)Physics
CPC primaryG03C8/46
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The invention relates to a photographic film unit with a picture sheet and a covering sheet which are joined together by means of an interposed mask, and a container for photographic developer material is located at the front end and a trap for collecting excess developer material is located at the rear end of the picture unit and whereby air guiding channels connect the trap compartment with the container compartment to conduct the surplus air or also developer past towards the empty developer container.

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