Patent · US Active

Process and apparatus for treating an imaged printing form, re-imageable printing form and machine for processing printing material

US8276512B2 · kind B2 · utility

0Cited by

4References

6Claims

0Family size

Assignee

Heidelberger Druckmaschinen AG · DE

Inventors

Michael Pasuch · Walldorf, DE
Helge Grandt · Reilingen, DE
Matthias Schlörholz · Heidelberg, DE

Key dates

Filing date	Dec 18, 2007
Grant date	Oct 2, 2012
Priority date	—
Expiry date	Feb 15, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/263
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A process for treating an imaged printing form, in particular a printing form covered with amphiphilic molecules or with polymers, such as saccharides, includes applying a gum, in particular a microscopic gum layer, to the surface of the printing form in the liquid state. The gum is removed or reduced down to a remaining nanoscopic covering after a short or negligible time interval, relative to the time interval until the application of lithographic liquid, for example dampening solution or printing ink, to the surface. The removal or reduction of the gum is preferably carried out in the still liquid state, i.e. before the applied gum dries on, and preferably immediately after the application. The remaining gum covering protects the printing form against contaminants and increases its hydrophily/hydrophoby contrast. An apparatus for treating an imaged printing form, a re-imageable printing form and a machine for processing printing material, are also provided.

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