Patent · US Expired

Self-developing type photographic apparatus with spread roller system

US4017879A · kind A · utility

3Cited by

7References

12Claims

0Family size

Assignee

AGFA-Gervaert AG · DE

Inventors

Peter Lermann · Feldkirchen-Westerham, DE
Gunter Fauth · Unterhaching, DE
Herbert Muller

Key dates

Filing date	Sep 29, 1975
Grant date	Apr 12, 1977
Priority date	—
Expiry date	Sep 29, 1995

Classification

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

Abstract

A self-developing type photographic apparatus includes a self-developing packet having a pair of juxtaposed sheet elements and a supply of film-processing fluid provided between the sheet elements with at least one of the sheet elements forming part of an area which is to be coated and developed by the fluid. The packet is adapted to be advanced through a pressure-generating gap defined between a pair of juxtaposed rollers. One of the rollers has a rigid sheet-contacting surface, whereas the other of the rollers has an outer resilient material layer. Various embodiments for facilitating the uniform spreading of the film-processing fluid over the film area are disclosed, particularly in the border regions thereof.

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