PURPOSE: To improve the durability of a colored picture and to alleviate yellowing by containing at least one kind of phthalimide carboxylic acid derivative and/or metal salt thereof, which is expressed by the specified general formula, and constituting a development sheet for pressure sensitive copy paper on a supporting body.
CONSTITUTION: A development sheet for pressure sensitive copy paper is constituted on a supporting body by containing at least one kind of phthalimide carboxylic acid derivative and/or metal salt thereof, which is expressed by the general formula. In this formula, R represent alkyl group, aralkyl group or aryl group, and X1 and X2 represent hydrogen atom, alkyl group, alkoxy group, nitro group of halogen atom. Thus, especially light-proof, plasticizer resistance and waterproof are improved. Yellowing caused by the light of the development sheet and NOx is alleviated.
OTSUJI ATSUO
KIDA JOTARO
HASEGAWA KIYOHARU
YOSHIKAWA KAZUYOSHI
NAKATSUKA MASAKATSU
YAMAMOTO CHEMICALS INC
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