Method for making compensations for register deviations
US7478593B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2005 |
| Grant date | Jan 20, 2009 |
| Priority date | — |
| Expiry date | Jan 7, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/10
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method of compensating for register deviations, which enables printing quality-reducing register deviations to be avoided at all printing or coating units of a rotary printing press. The method includes: a one-time determination of rotational vibrations in the driving gear train and of thereby caused register deviations between the printing or coating units only in the resonance regions of rotational speed under printing conditions within a rotary printing speed range; ascertaining counter-directed harmonic compensation moments from discrete harmonic portions of the rotational vibrations in the resonance range of rotational speeds; storing the parameters of the harmonic compensation moments and assigning them to the resonance ranges of rotational speed in the driving control system; and superimposing the stored compensation moments as a function of the rotational speed on the driving moment of the main drive motor in printing operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.