Heat-sensitive recording material

Details Heat-sensitive recording material Heat-sensitive recording material

2007-02-13

2007-02-13

Hess, Bruce H. (Department: 1774)

Record receiver having plural interactive leaves or a colorless

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

Identified reactant isolating material or capsule wall...

Reexamination Certificate

active

10743713

ABSTRACT:
The present invention provides a heat-sensitive recording material including a support having disposed thereon a heat-sensitive recording layer containing microcapsules in which an electron-donating dye precursor is encapsulated and outside which an electron-accepting compound is present, the electron-donating dye precursor being capable of reacting with the electron-accepting compound to develop color, wherein the microcapsules include at least two kinds of microcapsules having mutually different volume average particle diameters or different glass transition temperatures. A difference between each of the glass transition temperatures of the at least two microcapsules having different glass transition temperatures is preferably in a range from 20° C. to 70° C. According to the invention, a heat-sensitive recording material, which is superior in the reproduction of the gradation of an image and enables recording at high density, is obtained.

REFERENCES:
patent: 5525571 (1996-06-01), Hosoi
patent: 08-156421 (1996-06-01), None
patent: 2000-233574 (2000-08-01), None

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