Developers for thermal recording materials and thermal...

Details Developers for thermal recording materials and thermal... Developers for thermal recording materials and thermal...

2006-11-28

2006-11-28

Chea, Thorl (Department: 1752)

Radiation imagery chemistry: process, composition, or product th

Dye image from radiation sensitive dye or dye former by dry...

C430S224000, C430S243000, C430S334000

Reexamination Certificate

active

07141359

ABSTRACT:
The object of the present invention is to provide a novel developer capable or realizing a thermal recording material superior in preservation stability (i.e., heat resistance, moisture resistance) of color images and non-image areas, while satisfying the recent request for high sensitivity, and a thermal recording material using the developer.The developer for a thermal recording material of the present invention is characterized in that it consists of a composition containing, of condensates represented by the formula (I):wherein R is a halogen atom, a hydroxyl group, an alkyl group having 1 to 5 carbon atoms, an alkoxyl group having 1 to 5 carbon atoms, a cyano group, a nitro group, an aryl group or an aralkyl group, R in the number of m may be the same or different and m is an integer of 0–3, and n is an integer of 0–3, a condensate having two cores wherein n=0 as a main component, and at least one kind of condensate of the formula wherein n=1–3, and that a thermal recording material obtained using this developer shows high sensitivity, high dynamic color density, and superior preservation stability.

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3M's Dry Silver Teachnology, 3M Company St. Paul, Minnesota, David A. Morgan, Mar. 1975.

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