Replenishment systems
US5279930A · kind A · utility
4Cited by
9References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 29, 1992 |
| Grant date | Jan 18, 1994 |
| Priority date | — |
| Expiry date | May 29, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C5/31
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
It is known to replenish processing solutions in photographic processing apparatus in accordance with the throughput of material being processed. However, in low usage apparatus, there is no allowance for other losses which may occur, for example due to evaporation and/or oxidation. Described herein is a method of replenishing such processing solutions which allows for losses due to evaporation and/or oxidation. The method comprises determining a relationship between loss rates due to evaporation and/or oxidation, and water evaporation rate from the apparatus. It has been found that the relationship is substantially linear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.