Nippon Soda Co., Ltd.

Kazumi Hamakawa

Hiroshi Sakai

Shuntaro Kinoshita

Kayoko Tada

Kayoko Nomura

A recording material and a recording sheet having better color-developing performance, storage stability, etc. A recording material which contains (A) at least one color former, (B) at least one compound selected from the group including compounds represented by the following formula (I), and (C) at least one compound selected from the group including compounds represented by the following formula (II) (wherein Rto Reach represent a halogen atom, a nitro group, a Cto Calkyl group, a Cto Calkoxy group, a Cto Calkenyl group or a Cto Chaloalkyl group, n1 and n3 each independently represent any integer of 0 to 5, n2 represents any integer of 0 to 4, and X represents &#x2014;SO&#x2014;O&#x2014; or &#x2014;O&#x2014;SO&#x2014;). 

Recording material and recording sheet

A recording material and a recording sheet having excellent color-developing performance and storage stability and particularly having excellent heat-resistance of background. The recording material contains a color former (A), a compound represented by formula (I) (B), and a compound represented by formula (II) (C). 

Recording material, and recording sheet

An object of the invention is to provide a recording material and recording sheet having excellent color-developing performance, storage stability, etc. A recording material having good color-developing performance and storage stability may be obtained by using a specific compound having a benzhydrol skeleton as an additive in a recording material employing color development through a reaction between a color former and a color-developing agent.

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Ichihara, Japan

Kazumi Hamakawa