Patent · US Expired

Method and device for eliminating peeled-off surface portions of an ink-repellent layer of an offset printing plate

US6061867A · kind A · utility

4Cited by

12References

5Claims

0Family size

Assignee

Heidelberger Druckmaschinen AG · DE

Inventors

Andreas Schorpp · Bruchsal, DE
Bernhard Mechler · Heidelberg, DE
Andreas Detmers · Heddesheim, DE

Key dates

Filing date	May 26, 1998
Grant date	May 16, 2000
Priority date	—
Expiry date	May 26, 2018

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41P2235/23
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A method and a device for eliminating peeled-off surface portions of an ink-repellent layer of an offset printing plate. With known plate-cylinder washing devices such peeled-off surface portions of an ink-repellent layer cannot be eliminated from the offset printing plate completely. The method and device according to the present invention enables the complete elimination of said peeled-off surface portions. Using the surface of non-woven fabric mounted on a shaft in spiral-like manner, the ink-repellent layer is brushed off without any fluid added. The method and device are used in connection with the direct imaging of offset printing plates in the dry-offset process.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.