Microwave-heated film processing apparatus
US5302993A · kind A · utility
2Cited by
6References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 22, 1992 |
| Grant date | Apr 12, 1994 |
| Priority date | — |
| Expiry date | Jan 22, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03D13/006
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A compact developing apparatus that can quickly modify processing chemistries is disclosed. A web coated with a photograph emulsion or other photosensitive material forms one wall of a processing chamber and processing chemicals are introduced sequentially into the stationary chamber. The heating of the processing chemicals to their required temperatures is accomplished by applying microwave energy to the chemicals upstream of the chamber. The heating is controlled by a programmed digital computer to provide forward and backward feedback control of the microwave output in response to temperature and flow rate measurements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.