Laser dye or pigment removal imaging process
US5672458A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1996 |
| Grant date | Sep 30, 1997 |
| Priority date | — |
| Expiry date | Jul 29, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/146
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A process of forming a single color, ablation image having improved abrasion resistance comprising: PA1 a) imagewise-heating by means of a laser an ablative recording element comprising a support having thereon an image layer comprising an image dye or pigment dispersed in a polymeric binder, which causes the image layer to ablate imagewise, the image layer having a near infrared-absorbing material associated therewith to absorb at a given wavelength of the laser used to expose the element, the image dye or pigment absorbing in the region of from about 300 to about 700 nm; PA1 b) removing the ablated material to obtain an image in the ablative recording element; PA1 c) either charging the imaged, ablative recording element to a given polarity or applying a voltage across the surface of the element which is attracted to a conductive surface behind the element; PA1 d) applying colorless, charged particles to the element which causes them to be electrostatically attracted to the surface of the image layer; and PA1 e) heat-fusing the particles to obtain a protective overcoat over the entire surface of the image layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.