Method for erasing image on thermoreversible recording medium

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United States of America Patent

PATENT NO 8455161
APP PUB NO 20100069238A1
SERIAL NO

12559714

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Abstract

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A method for erasing an image including irradiating an image formed on a thermoreversible recording medium with a laser light having a wavelength of 700 nm to 1,500 nm so as to erase the image, wherein an energy density of the laser light is in a range of the energy density which can erase the image and a center value or less of the range, wherein the thermoreversible recording medium includes a support, and a thermoreversible recording layer on the support, and wherein the thermoreversible recording layer contains a leuco dye serving as an electron-donating color-forming compound and a reversible developer serving as an electron-accepting compound, in which color tone reversibly changes by heat, and at least one of the thermoreversible recording layer and a layer adjacent to the thermoreversible recording layer contains a photothermal conversion material, which absorbs the light and converts the light into heat.

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Patent Owner(s)

Patent OwnerAddress
RICOH COMPANY LTD3-6 NAKAMAGOME 1-CHOME OHTA-KU TOKYO 1438555 ?1438555

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Asai, Toshiaki Numazu, JP 33 352
Hotta, Yoshihiko Mishima, JP 129 2333
Ishimi, Tomomi Numazu, JP 58 506
Kawahara, Shinya Numazu, JP 51 513

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