Non-label printing process for direct thermal imaging materials including an organic silver salt
US6375371B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1999 |
| Grant date | Apr 23, 2002 |
| Priority date | — |
| Expiry date | Nov 30, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/4989
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A printing process for a substantially light-insensitive thermographic monosheet material having two edges parallel to one another and >12 cm apart (non-label) for obtaining a desired optical density and a desired colour tone comprising:selecting a thermographic monosheet material, the selected thermographic monosheet material being a black and whitethermographic monosheet material having a support and a thermosensitive element;supplying image data to a processing unit of a thermal printer including a printhead having energizable heating elements arranged in a column C;converting the image data which are not zero into at least one activation pulse per pixel to be printed;energising the heating elements printing-line by printing-line adjacent to the selected substantially light-insensitive thermographic monosheet material thereby producing an image;transporting the imaging material past and adjacent to the printhead in a transport direction with a transport system;forming an image dot with a heat energy of 50 to 200 mJ/mm2 of heating element surface area;wherein the thermosensitive element contains a substantially light-insensitive organic silver salt, a reducing agent therefor in t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.