Inking system on printing presses having provision for varying ink distribution peripherally on printing plate
US3983812A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 10, 1975 |
| Grant date | Oct 5, 1976 |
| Priority date | — |
| Expiry date | Sep 10, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S101/38
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An inking system for a printing plate having a printing density which varies arbitrarily from the leading end of the plate to the trailing end including a source of ink film, rollers arranged in series between the source and the plate cylinder, the last roller in the series being a form roller in contact with the plate, with at least one of the rollers being a vibrated roller. Thrusting means are provided for imparting reciprocating movement to the vibrated roller. Means are provided for establishing a succession of sources of control signal at different levels tailored to the printing density of the plate at corresponding points about the periphery. A reference member coupled to the plate cylinder commutates the sources to produce a phased control signal which varies with ink need about the periphery of the plate. The control signal is utilized to vary the instantaneous velocity of the thrusting means inversely with the printing density of the plate so that ink is deposited on successive peripheral portions of the plate in a thickness tailored to need. In a preferred form of the invention a control board is used to set up the succession of sources of control signal visually corres…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.