Ink key control in a printing press including lateral ink spread, ink saturation, and back-flow compensation
US5967049A · kind A · utility
36Cited by
19References
35Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1997 |
| Grant date | Oct 19, 1999 |
| Priority date | — |
| Expiry date | Dec 23, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41F31/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method is disclosed for correction of the effects of ink back-flow and lateral flow in the inking system of a web-offset printing press. A plate coverage equation dependent on plate coverage is used to compensate for ink back-flow into the ink reservoir. An ink key distribution function is utilized to correct for the blurring effects of lateral ink spread caused by the action of vibrator rollers. A correction is also made for the ink saturation effect. The method is applicable to an ink key preset system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.