PRINTING MEDIUM AND USE THEREOF
    1.
    发明专利

    公开(公告)号:CA1184031A

    公开(公告)日:1985-03-19

    申请号:CA441820

    申请日:1983-11-24

    Applicant: IBM

    Abstract: PRINTING MEDIUM AND USE THEREOF A printing medium which includes a substrate coated with a compound of the formula: wherein R3 is a ring group having certain substituents in at least one ortho position with respect to the atom connected to C = 0; and each R1 and R2 individually is aryl or alkaryl or are interconnected to form with the nitrogen atom a phenothiazine, phenoxazine, or phenazine or substituted derivative; and coated with an oxidizing agent or reduced form thereof; and method of use. EN9-82-028

    ELECTROCHROMIC RECORDING PAPER
    2.
    发明专利

    公开(公告)号:CA1156458A

    公开(公告)日:1983-11-08

    申请号:CA381202

    申请日:1981-07-06

    Applicant: IBM

    Abstract: ELECTROCHROMIC RECORDING PAPER A medium for electrochromic recording is provided by treating paper with a water soluble leuco methylene blue compound having the formula wherein R is a sulfonated aromatic or sulfonated aliphatic moiety. SA980013

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