Method for making an image using a direct thermal imaging element
US5573995A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1994 |
| Grant date | Nov 12, 1996 |
| Priority date | — |
| Expiry date | Apr 14, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/40043
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for making an image using a direct thermal imaging element, comprising on a support a thermosensitive layer incorporating an organic silver salt and a reducing agent contained in said thermosensitive layer and/or in other optional layers, said imaging element being imagewise heated by means of a thermal head having energisable heating elements, characterised in that the activation of the heating elements is executed line by line with a line duty cycle .DELTA. representing the ratio of activation time to total line time, such that the following equation is satisfied EQU P.ltoreq.P.sub.max 3.3 W/mm.sup.2 +(9.5 W/mm.sup.2 .times..DELTA.) wherein P.sub.max is the maximal value over all heating elements of the time averaged power density P dissipated by a heating element during a line time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.