Title:
ERASER
Document Type and Number:
Japanese Patent JPH1134585
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To make an image formed on an eraser hard to change with time by forming plasticizer only of polyester plasticizer of phthalic acid. SOLUTION: Since polyester plasticizer of phthalic acid is high molecular weight substance, it is scarcely moved in the eraser, and sublimable dye is also scarcely diffused from a surface of the eraser. However, a profile of a sublimable transfer image cannot be prevented from being dimmed similarly with the polyester plasticizer of adipic acid of the high molecular weight plasticizer. And, in the case of forming a vinyl chloride resin film in which an adding amount of the polyester plasticizer of the phthalic acid is small as a coating layer on a surface of an erasing material, diffusion of the dye is small due to small plasticizer amount. And, since the materials of the coating layer and erasing material are the same, adhesive properties of the both are satisfactory, and hence even it is worn, no adverse influence is effected for erasability.
Inventors:
TAKAHASHI YASUHIRO
Application Number:
JP20996497A
Publication Date:
February 09, 1999
Filing Date:
July 18, 1997
Export Citation:
Assignee:
PENTEL KK
International Classes:
B43L19/00; (IPC1-7): B43L19/00