Planographic printing
US6182571A · kind A · utility
20Cited by
19References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1999 |
| Grant date | Feb 6, 2001 |
| Priority date | — |
| Expiry date | Jun 29, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41N3/038
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for forming a planographic printing member is disclosed. A hydrophilic layer is formed on a support by contacting the support with a silicate solution that contains a silicate and a particulate material. An image layer is provided over the hydrophilic layer. The hydrophilic layer is treated to ensure that the image layer is able to change color on exposure. The hydrophilic layer may be treated with an acid, with a buffer formulation, with a colloidal suspension, or with a salt. Preferably the hydrophilic layer is treated with aluminum sulphate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.