Patent · US Active

Negative-working imageable elements

US8034538B2 · kind B2 · utility

6Cited by

5References

19Claims

0Family size

Assignee

EASTMAN KODAK COMPANY · US

Inventors

Bernd Strehmel · Berlin, DE
Harald Baumann · Tuttlingen, DE
Daniela Lummel · Drolshagen, DE

Key dates

Filing date	Feb 13, 2009
Grant date	Oct 11, 2011
Priority date	—
Expiry date	Nov 7, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S430/145
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

Negative-working imageable element can be used to prepared lithographic printing plates. These elements include a water-soluble contrast dye having a λmax in the range of from about 450 to about 750 nm and having an absorption that is lower than 10% with respect to the absorption of the radiation absorbing compound in the element at the wavelength used for exposure. The contrast dye is present in sufficient H-aggregation such that less than 40% of the entire absorption spectrum from the contrast dye is contributed by it in non-H-aggregated form.

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