Laser-induced thermal dye transfer with bleachable near-infrared

Details Laser-induced thermal dye transfer with bleachable near-infrared Laser-induced thermal dye transfer with bleachable near-infrared

1992-02-10

1993-06-15

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Transfer procedure between image and image layer, image...

Imagewise heating, element or image receiving layers...

430201, 430944, 430945, 430339, 346 76L, 428195, 503227, G03C 810, G03C 824

Patent

active

052197034

ABSTRACT:
The present invention relates to laser-induced thermal dye transfer using heat-transferable dyes, bleachable and heat-transferable near-infrared absorbing sensitizers, acid-photogenerating compounds, and optional near-ultraviolet absorbing sensitizers. The combination of the near-infrared absorbing sensitizer and acid-photogenerating compounds effects transfer of the heat-transferable dyes and bleaching of the near-infrared absorbing sensitizer to eliminate unwanted visible light absorption. The acid-photogenerating compound may be present in either the dye-donor or dye-receiver element. If the acid-photogenerator is in the dye-donor, bleaching will occur upon initial exposure of the dye-donor to near-infrared or near-ultraviolet radiation. If present in the dye-receiver element, bleaching will occur upon subsequent exposure of the dye receiver to near-infrared or near-ultraviolet radiation.

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