EP0097220A2 - Stabilisierung von leucomethylenblauen Farben auf einer Druckschrift - Google Patents

Stabilisierung von leucomethylenblauen Farben auf einer Druckschrift Download PDF

Info

Publication number
EP0097220A2
EP0097220A2 EP83101757A EP83101757A EP0097220A2 EP 0097220 A2 EP0097220 A2 EP 0097220A2 EP 83101757 A EP83101757 A EP 83101757A EP 83101757 A EP83101757 A EP 83101757A EP 0097220 A2 EP0097220 A2 EP 0097220A2
Authority
EP
European Patent Office
Prior art keywords
acid
printing substrate
printing
leucomethylene blue
substrate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP83101757A
Other languages
English (en)
French (fr)
Other versions
EP0097220A3 (en
EP0097220B1 (de
Inventor
Paul Lewis Gendler
Annette Bronkesh Jaffe
Robert James Twieg
William Emmett Bernier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of EP0097220A2 publication Critical patent/EP0097220A2/de
Publication of EP0097220A3 publication Critical patent/EP0097220A3/en
Application granted granted Critical
Publication of EP0097220B1 publication Critical patent/EP0097220B1/de
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
    • B41M5/337—Additives; Binders
    • B41M5/3375—Non-macromolecular compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/26—Printing on other surfaces than ordinary paper
    • B41M1/36—Printing on other surfaces than ordinary paper on pretreated paper, e.g. parchment, oiled paper, paper for registration purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/124—Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components
    • B41M5/128—Desensitisers; Compositions for fault correction, detection or identification of the layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/20—Duplicating or marking methods; Sheet materials for use therein using electric current

Definitions

  • This invention relates to substrates for printing on which leucomethylene blue dyes have been stabilized against background formation by the addition of an additive material.
  • Leucomethylene blue dyes find widespread application in color printing technologies such as thermal printing, pressure printing and electrolytic printing.
  • One common problem with the different leuco dyes used in these technologies is their spontaneous conversion to the dye form by ambient conditions.
  • many methods involving protection of the leuco dyes have been used, such as encapsulation and the use of stilt layers. Such methods have given some success in various printing technologies, but they are not applicable to electrochromic printing, where the mechanism requires an aqueous electrolyte layer to be in intimate contact with the colour-forming agent. It is in electrochromic printing that the present invention finds its most particularly useful application.
  • Electrochromic printing is well known in the art.
  • the present state of electrochromic printing is referenced by U.S. patents 4,211,616 and 4,309,255, along with the art cited therein. No prior art of which we are aware, however, suggests the use of the additives which are the subject matter of the present invention.
  • a printing substrate comprising a leucomethylene blue dye characterized in that the substrate also includes a stabilizing amount of an additive selected from the group consisting of citric acid, aspartic acid, malonic acid, oxalic acid, ascorbic acid, tartaric acid, ketomalonic acid monohydrate, glucose and methionine.
  • an additive selected from the group consisting of citric acid, aspartic acid, malonic acid, oxalic acid, ascorbic acid, tartaric acid, ketomalonic acid monohydrate, glucose and methionine.
  • paper is treated with an aqueous solution containing from about .5 to 5% by weight of a leuco dye. Generally about 1% is the most preferred level.
  • the solution also contains a stabilizer in an amount which is, at minimum, equal to the molar amount of the dye. The stabilizer may be present up to about 5% by weight concentration. In most instances the solution will also contain bromide ions in an amount of from 1% to 30%, generally about 15%.
  • the paper contains approximately 10 mg of leuco dye for each standard size page of 8 1/2 x 11 inch dimensions.
  • the operative additives do, however, have a community of physical and mechanical properties. They are all solids which are soluble in water and they all contain an oxygen atom doubly bonded to a carbon atom.
  • the experimental results obtained using the additives of the present invention are summarized in the following table I, showing results obtained with o- sulfobenzoylleucomethylene blue (o-SBLMB) as the substrate leucodye.
  • the most preferred additive is malonic acid.
  • a typical formulation is the following applied to Hammermill Bond paper.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Color Printing (AREA)
EP83101757A 1982-06-18 1983-02-23 Stabilisierung von leucomethylenblauen Farben auf einer Druckschrift Expired EP0097220B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US38983382A 1982-06-18 1982-06-18
US389833 1995-02-15

Publications (3)

Publication Number Publication Date
EP0097220A2 true EP0097220A2 (de) 1984-01-04
EP0097220A3 EP0097220A3 (en) 1985-05-22
EP0097220B1 EP0097220B1 (de) 1988-06-08

Family

ID=23539902

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83101757A Expired EP0097220B1 (de) 1982-06-18 1983-02-23 Stabilisierung von leucomethylenblauen Farben auf einer Druckschrift

Country Status (3)

Country Link
EP (1) EP0097220B1 (de)
JP (1) JPS58224788A (de)
DE (1) DE3376969D1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0418399A4 (en) * 1989-04-07 1991-11-13 Toppan Printing Co. Ltd. Composition for reversible thermal recording medium
EP0600441A1 (de) * 1992-11-30 1994-06-08 Dainippon Ink And Chemicals, Inc. Laserbeschriftung und Druckfarbstoff zur Beschriftung
DE10025832A1 (de) * 2000-05-25 2001-12-13 Aeg Niederspannungstech Gmbh Selektiver Leitungsschutzschalter mit Sperrelement
US8754005B2 (en) 2012-08-28 2014-06-17 Kimberly-Clark Worldwide, Inc. Color-changing composition and material

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005046272A1 (de) 2005-09-27 2007-03-29 Wipak Walsrode Gmbh & Co. Kg Individuell markierbare Polymerfolie, Verfahren zu deren Herstellung und zugehörige Produkte

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1135755B (de) * 1960-02-29 1962-08-30 Dr Karlheinz Pfoertner Fuer ionisierende Strahlen empfindliches, fuer sichtbares Licht unempfindliches Material und Verfahren zu dessen Herstellung
GB1141591A (en) * 1966-01-04 1969-01-29 Agfa Gevaert Nv Recording information with silver halide emulsion or 2-component diazo-type material
GB1360581A (en) * 1971-03-30 1974-07-17 Fuji Photo Film Co Ltd Thermosensitive recording material
US4262937A (en) * 1979-05-23 1981-04-21 Minnesota Mining And Manufacturing Company Carbonless imaging system
US4315068A (en) * 1980-02-05 1982-02-09 Ricoh Co., Ltd. Photo-sensitive and heat-sensitive composition and recording element using same
EP0056096A3 (de) * 1981-01-09 1983-03-23 International Business Machines Corporation Elektrolytisches Mehrfarbendruckverfahren
JPS57140175A (en) * 1981-02-24 1982-08-30 Ibm Printer

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0418399A4 (en) * 1989-04-07 1991-11-13 Toppan Printing Co. Ltd. Composition for reversible thermal recording medium
US5178669A (en) * 1989-04-07 1993-01-12 Toppan Printing Co., Ltd. Composition for reversible thermal recording media
EP0688679A1 (de) * 1989-04-07 1995-12-27 Toppan Printing Co., Ltd. Reversibles wärmeempfindliches Aufzeichnungsverfahren
EP0600441A1 (de) * 1992-11-30 1994-06-08 Dainippon Ink And Chemicals, Inc. Laserbeschriftung und Druckfarbstoff zur Beschriftung
US5413629A (en) * 1992-11-30 1995-05-09 Dainippon Ink And Chemicals, Inc. Laser marking and printing ink therefor
DE10025832A1 (de) * 2000-05-25 2001-12-13 Aeg Niederspannungstech Gmbh Selektiver Leitungsschutzschalter mit Sperrelement
US8754005B2 (en) 2012-08-28 2014-06-17 Kimberly-Clark Worldwide, Inc. Color-changing composition and material

Also Published As

Publication number Publication date
JPS58224788A (ja) 1983-12-27
DE3376969D1 (en) 1988-07-14
JPH0243639B2 (de) 1990-10-01
EP0097220A3 (en) 1985-05-22
EP0097220B1 (de) 1988-06-08

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