公开(公告)号：DE3165051D1

公开(公告)日：1984-08-30

申请号：DE3165051

申请日：1981-07-06

Applicant: IBM

Inventor： GENDLER PAUL LEWIS ,  GRANT BARBARA DIANNE ,  SNYDER CLINTON DAVID

IPC: C09K9/02 ,  B41M5/20 ,  D21H19/10 ,  G02F1/15 ,  G02F1/153 ,  G02F1/17

公开(公告)号：DE3376969D1

公开(公告)日：1988-07-14

申请号：DE3376969

申请日：1983-02-23

Applicant: IBM

Inventor： GENDLER PAUL LEWIS ,  JAFFE ANNETTE BRONKESH ,  TWIEG ROBERT JAMES ,  BERNIER WILLIAM EMMETT

IPC: B41M1/36 ,  B41M5/124 ,  B41M5/128 ,  B41M5/20 ,  B41M5/337 ,  B41M5/12 ,  B41M5/26

Abstract: Substrate comprises (1) leucomethylene blue dye (I) and (2), as stabiliser, citric, aspartic, malonic, oxalic, ascorbic or tartaric acids; ketomalonic acid monohydriate; glucose or methionine. Most pref. is malonic acid. Pref. the mole ratio of (I):stabiliser is about 1:1 and the substrate, which is esp. paper, may also contain bromide ions. Typically the paper is treated with an aq. soln. contg. 0.5-5 (1) wt. %(I), a stoichiometric amt. of stabiliser and 1-30(15)% bromide ion. Each 8.5 by 11 inch sheet of paper contains about 10 mg (I). The stabiliser inhibts background formation, i.e. oxidative conversion of (I) to the coloured form. The substrates are most useful for electrochromic printing and give prints of improved storage qualities.

公开(公告)号：DE3373799D1

公开(公告)日：1987-10-29

申请号：DE3373799

申请日：1983-05-02

Applicant: IBM

Inventor： GENDLER PAUL LEWIS ,  TWIEG ROBERT JAMES

IPC: C08K5/00 ,  B41M5/20 ,  C08K5/35 ,  C08K5/357 ,  C09B21/00 ,  C09K9/00 ,  G02F1/15 ,  G02F1/17

Abstract: An electrochromic recording substrate comprising bromide ions and a leucodye having the structurewherein R is lower alkyl, lower alkoxy, lower thioalkyl, lower dialkylamino, or diarylamino.

公开(公告)号：DE3379719D1

公开(公告)日：1989-06-01

申请号：DE3379719

申请日：1983-12-28

Applicant: IBM

Inventor： BERNIER WILLIAM EMMETT ,  EMMI FRANCIS ,  FEY EDMOND OTTO ,  GENDLER PAUL LEWIS ,  TWIEG ROBERT JAMES

IPC: B41M5/20

公开(公告)号：DE3475051D1

公开(公告)日：1988-12-15

申请号：DE3475051

申请日：1984-11-16

Applicant: IBM

Inventor： GENDLER PAUL LEWIS ,  TWIEG ROBERT JAMES

IPC: B41M5/20 ,  G01D15/06

Abstract: Certain phenazine leucodyes are useful in electrochromic recording systems. The specification discloses a leucodye having the structurewherein R is an acyl group having from 1 to 6 carbon atoms.