Heat-sensitive recording material

Details Heat-sensitive recording material Heat-sensitive recording material

2006-08-29

2006-08-29

Hess, Bruce H. (Department: 1774)

Record receiver having plural interactive leaves or a colorless

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

Having nonchromogenic liquid spread-control or...

C503S200000, C503S216000, C503S221000, C503S226000

Reexamination Certificate

active

07098168

ABSTRACT:
(B) A thermosensitive recording material comprises a thermosensitive recording layer containing an electron-donating colorless dye, an electron-accepting compound which develops color upon a reaction with the electron-donating colorless dye and a sensitizer, wherein the thermosensitive recording material satisfies at least one of the following conditions (1) to (3).(1) An image density when thermal printing is performed with a printing energy is 1.20 or more, and the thermosensitive recording material is used for a recording device having a printing speed of 10 cm/sec or more.(2) An image density after the thermosensitive recording material is brought into contact with a heat source of 70° C. for 5 seconds is 0.15 or less, and the sensitizer is 2-benzyloxynaphthalene or the like.(3) the electron-accepting compound is a compound represented by R1-Ph-SO2R2wherein R1represents a hydroxyl group or an alkyl group, R2represents -Ph, —NH-Ph, -Ph-OR3or —NH—CO—NH-Ph, R3represents an alkyl group, Ph represents a phenyl group and may be substituted with a substituent containing SO2R2, and a volume-averaged grain size is in a range of 0.5 to 1.0 μm.

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