摘要:
There is described, in thermograhic recording films, the use of a compound containing at least two epoxide moieties in the protective layer and/or in a layer on top of the protective layer of thermographic recording films to reduce gouging and streaking of the printed image film and to reduce head build-up on the thermal printhead.
摘要:
A heat-sensitive imaging material (10) comprises a support (12) on which is formed a heat-sensitive imaging layer (18), the latter comprising a color forming amount of a substantially colorless, finally divided noble metal salt of an organic acid, an organic reducing agent that is capable of a color-forming reaction with the noble metal salt under heating conditions to produce a colored image, and a stabilizer compound of formula (I) that mitigates the formation of non-imaging background color in the imaging layer:
In formula (I), Z 1 , Z 2 and Z 3 each independently represents hydrogen, an alkali metal ion, an alkyl group comprising 1 to about 8 carbon atoms, an aralkyl or cycloalkyl group comprising 5 to about 10 carbon atoms, or an aryl group comprising 6 to about 15 carbon atoms; or Z 1 and Z 2 together represent a divalent alkaline earth metal ion, a divalent alkylene group comprising 2 to about 8 carbon atoms, or a divalent aryl group comprising 6 to about 30 carbon atoms, with the proviso that, when Z 1 and Z 2 together do not represent a divalent alkaline earth metal ion, at least one of Z 1 , Z 2 and Z 3 represents hydrogen or an alkali metal ion.
摘要:
An infrared laser heat sensitive recording material is provided which includes a support and a heat sensitive layer provided thereon. The heat sensitive layer includes an organic silver salt, a developer for the organic silver salt, a water soluble binder, and a tricarbocyanine dye having at least two acidic groups whose maximum absorption wave length is at least 50 nm longer than a maximum absorption wave length of an aqueous solution of the tricarbocyanine dye and is in a range of 650 to 1300 nm. The present invention increases infrared laser light absorption efficiency, reduces degree of coloration of background, and enables recording of images with good quality.
摘要:
A thermosensitive recording material suited for use in direct thermal imaging by means of an information-wise energized heating element, said recording material containing a thermosensitive recording layer of which the optical density is changed by heat, characterized in that said recording layer is coated with a protective transparent layer essentially consisting of a cellulose nitrate having a substitution degree (DS) in the range of 2.2 to 2.32.
摘要:
A direct thermal recording process wherein a direct thermal recording material is heated dot-wise and said direct thermal recording material comprises on a substrate an imaging layer containing uniformly distributed in a film-forming polymeric binder (i) one or more substantially light-insensitive organic silver salts being no double salts, said silver salt(s) being in thermal working relationship with (ii) an organic reducing agent therefor, characterized in that said reducing agent is a benzene compound the benzene nucleus of which is substituted by no more than two hydroxy groups which are present in 3,4-position on said nucleus and have in the 1-position of said nucleus a substituent linked to said nucleus by means of a carbonyl group.
摘要:
A direct thermal imaging process wherein a non-photosensitive direct thermal recording material is heated dot-wise, and said direct thermal recording material comprises an imaging layer containing uniformly distributed in a film-forming polymeric binder (i) one or more substantially light-insensitive organic silver salts, said silver salt(s) being uniformly in thermal working relationship with (ii) one or more organic reducing agents therefor, however neither including 3,5-dihydroxybenzoic acid as acidic reagent nor di-tert-butyl-p-cresol as a sole reducing agent, characterized in that said imaging layer contains at least one polycarboxylic acid and/or anhydride thereof in a molar percentage of at least 20 with respect to said silver salt(s).