Device for ink profile-dependent regulation dampening solution
US4485737A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 2, 1983 |
| Grant date | Dec 4, 1984 |
| Priority date | — |
| Expiry date | Jun 2, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41F7/24
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Device for ink profile-dependent regulation of dampening solution in an offset printing unit having an inking-dampening unit which, over the width of a type form, supplies a dampening solution film of substantially uniform thickness to the plate cylinder and to the inking part of the inking-dampening unit, including a hydrophilic measuring roller in contact with one of a plurality of inking unit rollers; a measuring device disposed in vicinity of the measuring roller for determining extent of wetting of an outer cylindrical surface of the measuring roller section-by-section over the entire width of the measuring roller and for transmitting corresponding signals; means for varying the proportion of the dampening solution in the ink film section-by-section; and a control stage for converting the signals from the measuring device into adjustment commands and applying them to the proportion varying means for varying section-by-section the proportion of dampening solution in the ink film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.