THERMOSENSITIVE RECORDING BODY

• Main Authors: TOSAKA MASAYA, KOSHI TATSURO, HIRAI KENJI, MIDORIKAWA YOSHIMI
• Format: Patent
• Language: English; Japanese
• Published: 22.09.2023
• Subjects: COLOUR PRINTING; LINING MACHINES; PERFORMING OPERATIONS; PRINTING; PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; STAMPS; TRANSPORTING; TYPEWRITERS

To provide a thermosensitive recording body which uses a color developing system containing both a leuco dye type color developing component and a metal chelate type color-developing component in a thermosensitive recording layer and is significantly improved in heat resistance and yellowing resistance.SOLUTION: There is provided a thermosensitive recording body which has a thermosensitive recording layer containing a colorless or light-colored electron-donating leuco dye and an electron-accepting color developing agent on a support, wherein the ratio of the total content (solid content) of the metal chelate type color-developing component to the total (leuco dye type color developing component) content (solid content) of the electron-donating leuco dye and the electron-accepting color developing agent is 0.05 to 0.15.SELECTED DRAWING: None 【課題】感熱記録層にロイコ染料型発色成分と金属キレート型発色成分の両方を含む発色系を利用した感熱記録体であって、耐熱性や耐黄変性が顕著に改善された感熱記録体を提供する。【解決手段】支持体上に、無色ないし淡色の電子供与性ロイコ染料及び電子受容性顕色剤を含有する感熱記録層を有する感熱記録体において、該感熱記録層中の、電子供与性ロイコ染料及び電子受容性顕色剤の合計（ロイコ染料型発色成分）含有量（固形分）に対する金属キレート型発色成分の合計含有量（固形分）の比は、０．０５～０．１５である。【選択図】なし