Thermosensitive recording medium, image recording method and image processing method
AssigneeRicoh Company, Ltd.
InventorsShinya Kawahara, Tomomi Ishimi, Toshiaki Asai, Yoshihiko Hotta
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Abstract
To provide a thermosensitive recording medium including: a support; an image recording layer on the support; and an inorganic material in particle form as a light-heat conversion material, wherein the inorganic material has a ratio of Y to X, represented by Y/X, of 2 or greater, where X denotes an average value of absorption intensities with respect to light having wavelengths in the range of 400 nm to 700 nm, and Y denotes a maximum value among absorption intensities with respect to light having wavelengths greater than 700 nm but smaller than or equal to 1,200 nm.
Claims10
A thermosensitive recording medium comprising:
- a support;
- an image recording layer on the support;
- and
- an inorganic material in particle form as a light-heat conversion material,
- wherein the inorganic material has a ratio of Y to X, represented by Y/X, of 2 or greater,
- where X denotes an average value of absorption intensities with respect to light having wavelengths in the range of 400 nm to 700 nm, and Y denotes a maximum value among absorption intensities with respect to light having wavelengths greater than 700 nm but smaller than or equal to 1,200 nm,
- wherein the image recording layer comprises the light-heat conversion material or the light-heat conversion material is a separate layer attached to the image recording layer,
- wherein the light-heat conversion material is at least one selected from the group consisting of a hexaboride, a tungsten oxide compound and zinc antimonite and
- wherein the image recording layer comprises a leuco dye and a reversible developer.
An image recording method comprising:
- applying light to a thermosensitive recording medium so as to record an image on the thermosensitive recording medium,
- wherein the thermosensitive recording medium comprises a support;
- an image recording layer on the support;
- and an inorganic material in particle form as a light-heat conversion material, and
- wherein the inorganic material has a ratio of Y to X, represented by Y/X, of 2 or greater,
- where X denotes an average value of absorption intensities with respect to light having wavelengths in the range of 400 nm to 700 nm, and Y denotes a maximum value among absorption intensities with respect to light having wavelengths greater than 700 nm but smaller than or equal to 1,200 nm,
- wherein the image recording layer comprises the light-heat conversion material, or the light-heat conversion material is a separate layer attached to the image recording layer,
- wherein the light-heat conversion material is at least one selected from the group consisting of a hexaboride, a tungsten oxide compound and zinc antimonite, and
- wherein the image recording layer comprises a leuco dye and a reversible developer.
An image processing method comprising:
- applying light to a thermosensitive recording medium so as to carry out at least one of image recording and image erasure on the thermosensitive recording medium,
- wherein the thermosensitive recording medium comprises a support;
- a thermoreversible recording layer on the support;
- and an inorganic material in particle form as a light-heat conversion material, and
- wherein the inorganic material has a ratio of Y to X, represented by Y/X, of 2 or greater,
- where X denotes an average value of absorption intensities with respect to light having wavelengths in the range of 400 nm to 700 nm, and Y denotes a maximum value among absorption intensities with respect to light having wavelengths greater than 700 nm but smaller than or equal to 1,200 nm;
- wherein the image recording layer comprises the light-heat conversion material, or the light-heat conversion material is a separate layer attached to either side of the image recording layer,
- wherein the light-heat conversion material is at least one selected from the group consisting of a hexaboride, a tungsten oxide compound and zinc antimonite, and
- wherein the image recording layer comprises a leuco dye and a reversible developer.
Dependencies are inferred from the claim text.