Treating solution for lithographic printing plate
US5525455A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 1995 |
| Grant date | Jun 11, 1996 |
| Priority date | — |
| Expiry date | Jan 27, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41N3/08
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides a treating solution for lithographic printing plates having ink receptive silver images in which the compound having a mercapto group or a thione group and an oleophilic group which is added to improve ink-receptivity can be solubilized without damaging the ink-receptivity and with using no solvent and in which hydrophilic colloid particles are excellent in time stability. The solution contains at least one alkanolamine and a compound having a mercapto group or a thione group and an oleophilic group and being free from sulfo group and carboxyl group. Preferably, the solution additionally contains an amino acid and hydrophilic colloid particles which are inorganic fine particles having an average particle size of 0.1 .mu.m or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.