C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 311/53 (2006.01) B41M 5/26 (2006.01) B41M 5/333 (2006.01) C07C 311/51 (2006.01) C07C 335/16 (2006.01) C07C 335/20 (2006.01) C07C 335/22 (2006.01)
Patent
CA 2157140
A thermal recording sheet wherein a compound of Formula (I) or (II) is contained in a thermal color developing layer including a basic colorless dye and an organic color developer as main ingredients: Image ...... (I) (wherein A denotes hydrogen atom, an alkyl group of C1 to C4, an alkoxy group of C1 to C4, hydroxy group, or nitro group, R1, R2, and R3 are hydrogen atom, an alkyl group of C1 to C4, an alkoxy group of C1 to C4, hydroxy group, or nitro group, R1 and R2 may combine with each other to form an aromatic ring, Y is sulfur or oxygen atom). Image ...... (II) (wherein B denotes hydrogen atom, an alkyl group of C1 to C4, an alkoxy group of C1 to C4, hydroxy group, or nitro group, R1, R2, and R3 are hydrogen atom, an alkyl group of C1 to C4, an alkoxy group of C1 to C4, hydroxy group, or nitro group, R1 and R2 may combine with each other to form an aromatic ring, Y is sulfur or oxygen atom). The thermal recording sheet has a high sensitivity and high image stability.
Hamada Kaoru
Kinishi Ryoichi
Minami Toshiaki
Nagai Tomoaki
Ninakami Ryuzo
Nippon Paper Industries Co. Ltd.
Smart & Biggar
Yoshitomi Pharmaceutical Industries Ltd.
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