Method of monitoring ink-water balance on a lithographic printing press
US4677298A · kind A · utility
25Cited by
8References
63Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1984 |
| Grant date | Jun 30, 1987 |
| Priority date | — |
| Expiry date | Jun 7, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S101/45
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a lithographic printing system, a light source and a plurality of photodetectors are used to monitor the amount of fountain solution interacting with the ink. The light source irradiates an ink form roller and the photodetectors are disposed at a specular angle and at one or more non-specular angles to monitor the reflected light. An electronic circuit is responsive to the output of the photodetectors and is used for providing an indication of the amount of fountain solution emulsified in the ink, and lying on the surface of the ink.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.