Process and apparatus for converging developing vapors in diazocopy machines
US4289394A · kind A · utility
1Cited by
4References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 22, 1979 |
| Grant date | Sep 15, 1981 |
| Priority date | — |
| Expiry date | Jun 22, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03D7/00
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to an improvement in diazocopy development machines. A development chamber is used in which ammonia vapors are generated. A converging system made up of converging walls which accelerate the hot ammonia vapors, without additional means, channels the vapors toward the copy support. Thus, a striking is made of the support with the vapors and the development speed can be significantly increased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.