Patent · US Expired

Concentrate and aqueous developer produced therefrom for imagewise exposed recording materials

US6365330B1 · kind B1 · utility

9Cited by

5References

29Claims

0Family size

Assignee

Agfa-Gevaert NV · BE

Inventors

Thomas Leichsenring · Mainz, DE
Mario Boxhorn · Mainz, DE
Andreas Elsaesser · Idstein, DE
Thorsten Lifka · Schlangenbad, DE
Rudolf Zertani · Mainz, DE

Key dates

Filing date	Oct 5, 1999
Grant date	Apr 2, 2002
Priority date	—
Expiry date	Oct 5, 2019

Classification

Technology area (CPC G)Physics
CPC primaryG03F7/322
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The invention relates to a developer concentrate which comprises water, at least one agent which is alkaline in water and an amphoteric surfactant and additionally at least one anionic surfactant, at least one complexing agent, at least one aminoalcohol and at least one N-alkoxylated mono- or polyfunctional amine. A ready-to-use developer can be prepared from this concentrate by dilution with tap water advantageously in the ratio of from 1:0.5 to 1:10, preferably in the ratio of from 1:2 to 1:6. The developer or the replenisher is preferably used in the production of printing plates.

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