Apparatus for simultaneously processing plural webs of photosensitive material
US5250975A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 1992 |
| Grant date | Oct 5, 1993 |
| Priority date | — |
| Expiry date | Jun 3, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03D3/135
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Apparatus for simultaneously treating two or more webs of photosensitive material has a tank with sets of pulleys for advancement of discrete webs. The sets of pulleys are installed in discrete compartments which are separated from each other by one or more light-intercepting partitions having one or more passages for the flow of liquid but preventing the penetration of light. Each set of pulleys is driven by a discrete motor or by a discrete clutch receiving torque from a single prime mover. The compartments are sealed by discrete closures. If the parts which are used to advance and treat a particular web happen to be defective or require attention for any other reason, the respective set of pulleys is arrested while the other set or sets of pulleys continue to transport the respective web or webs, and the cover for the compartment which confines the arrested set of pulleys is removed to afford access to the respective compartment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.