Imaging media containing hindered amine light stabilizers or nit

Details Imaging media containing hindered amine light stabilizers or nit Imaging media containing hindered amine light stabilizers or nit

1991-05-06

1992-10-06

Schwartz, Pamela R.

Record receiver having plural interactive leaves or a colorless

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

Having nonchromogenic liquid spread-control or...

503216, 503217, 503218, 503224, B41M 530

Patent

active

051531690

ABSTRACT:
An imaging medium has at least one color-forming layer comprising a thermal color-forming composition adapted to undergo a change of color upon increase in the temperature of the color-forming layer above a color-forming temperature for a color-forming time, the color-forming layer further comprising a color stabilizer which is a hindered amine light stabilizer or a nitrones. The color stabilizer prevents development of color in the medium during storage before or after imaging, thereby reducing the minimum optical density of the imaged medium and/or color distortion in the image.

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patent: 4960901 (1990-10-01), Borrer et al.
Padron, A. J. C., Rev. Macromol. Chem. Phys. 30(1), 107-154 (1990).

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