Thermosensitive recording material, and synthesis method of...

Details Thermosensitive recording material, and synthesis method of... Thermosensitive recording material, and synthesis method of...

2005-04-12

2005-04-12

Schilling, Richard L. (Department: 1752)

Record receiver having plural interactive leaves or a colorless

Having a colorless color-former, developer therefor, or...

Identified organic electron acceptor other than phenolic resin

C430S338000, C430S964000

Reexamination Certificate

active

06878671

ABSTRACT:
A thermosensitive recording material comprising a thermosensitive layer provided on a substrate, and the thermosensitive layer comprises as main ingredients a leuco dye and a developer to make colored state of said leuco dye when heated, wherein the developer is an oligomer composition obtained from the reaction of a polyvalent isocyanate compound represented by following Formula (I) with an aromatic amine represented by following Formula (II);in-line-formulae description="In-line Formulae" end="lead"?X(NCO)a  Formula (I)in-line-formulae description="In-line Formulae" end="tail"?where X represents a try- or more-valent group, a represents an integer numeral of 3 or more, b and c represent respectively integer numerals in the range of 0 to 5 and they satisfy a relation of b+c=1 to 5, Z represents hydrogen atom, alkyl group, allyl group or aryl group, and the aryl group may include condensed ling structure thereof, and d represents an integer numeral in the range of 0 to 4. This developer shows excellent reliabilities of both image and background area, and also shows an excellent color-developing characteristics (color developing sensitivity and image density).

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