WAERMEEMPFINDLICHES AUFZEICHNUNGSBLATT

• Main Authors: MAEDA, RYUGO, KOBE-SHI HYOGO-KEN, JP, INAGAKI, MASAJI, ASHIYA-SHI HYOGO-KEN, JP, ARAKI, SHINGO, OSAKA-FU, JP, KITAO, TEIJIRO, TONDABAYASHI-SHI OSAKA-FU, JP, UENO, SHIGEKI, NISHINOMIYA-SHI HYOGO-KEN, JP
• Format: Patent
• Language: German
• Published: 17.12.1992
• Edition: 5
• Subjects: COLOUR PRINTING; LINING MACHINES; PERFORMING OPERATIONS; PRINTING; PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; STAMPS; TRANSPORTING; TYPEWRITERS

A thermosensitive recording sheet having a coated film containing a color-forming lactone compound, an acidic substance and a sensitizer. The sensitizer is at least one aliphatic carboxylic acid ester represented by the formula wherein R and R are identical or different and each represents an alkyl group having 1 to 20 carbon atoms, a cycloalkyl group, an aryl group, a group of the formula -CnH2n-Ar in which n is an integer of 1 to 8 and Ar is an aryl group, or a group of the formula -CnH2n-CO-Ar in which n and Ar are as defined; R represents a group of the formula -CnH2n- in which n is as defined; R and R are identical or different and each represents an alkyl group having 1 to 20 carbon atoms, a cycloalkyl group, a group of the formula -CnH2n-Ar in which n and Ar are as defined, or a group of the formula -CnH2n-CO-Ar in which n and Ar are as defined; and R represents an alkyl group having 2 to 6 carbon atoms and substituted by a halogen atom selected from chlorine, bromine and iodine atoms; with the proviso that the alkyl group having 1 to 20 carbon atoms for R , R , R and R may be substituted by a halogen atom, and the cycloalkyl group, the aryl group and Ar in -CnH2n-Ar and -CnH2n-CO-Ar may be substituted by an alkyl, cycloalkyl, aryl, aralkyl, phenacyl, alkyloxy, aryloxy, aralkyloxy, arylcarbonyl, arylsulfonyl, nitro or ammoniumsulfonic acid group or a halogen atom.