Laser-driven method and apparatus for lithographic imaging and printing plates for use therewith
US5540150A · kind A · utility
9Cited by
11References
44Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 30, 1995 |
| Grant date | Jul 30, 1996 |
| Priority date | — |
| Expiry date | Jan 30, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/165
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Apparatus and methods for imaging lithographic plates using laser devices that emit in the near-infrared region, and plates suitable for imaging with the apparatus and methods. Laser output either ablates one or more plate layers or physically transforms a surface layer, in either case resulting in an imagewise pattern of features on the plate. The image features exhibit an affinity for ink or an ink-abhesive fluid that differs from that of unexposed areas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.