Process for rejuvenating developer in printing plate development
US5811224A · kind A · utility
11Cited by
15References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1994 |
| Grant date | Sep 22, 1998 |
| Priority date | — |
| Expiry date | Aug 24, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/3092
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This invention pertains to an ultrafiltration process which maintains a constant developer strength in a printing plate developing operation. Such a process enables development of more plates than conventional processes while using less developer and generating less liquid waste. The ultrafiltration process is suitable for both batch and continuous plate development operations. By this process, used developer is filtered and the fluid portion returned to the working developer solution. The filtered out remainder mass is treated with an absorber to convert it into a solid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.