Photographic processing apparatus
US5319410A · kind A · utility
4Cited by
11References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 15, 1993 |
| Grant date | Jun 7, 1994 |
| Priority date | — |
| Expiry date | Apr 15, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03D3/065
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
When using unstable processing solutions, high recirculation and/or replenishment rates may be required. However, when replenisher is added to a processing tank, a noticeable drop in the temperature of the processing solution may occur. Such a drop in temperature may lead to variable photographic sensitometry of the material being processed. Described herein is apparatus in which temperature control means (28) are provided to ensure that the temperature of the solution being added to the processing tank does not produce such a temperature drop.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.