DE3836797C2 - - Google Patents

Info

Publication number
DE3836797C2
DE3836797C2 DE19883836797 DE3836797A DE3836797C2 DE 3836797 C2 DE3836797 C2 DE 3836797C2 DE 19883836797 DE19883836797 DE 19883836797 DE 3836797 A DE3836797 A DE 3836797A DE 3836797 C2 DE3836797 C2 DE 3836797C2
Authority
DE
Germany
Prior art keywords
carbon atoms
alkyl
leuco
leuco dyes
alkoxy
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.)
Expired - Lifetime
Application number
DE19883836797
Other languages
German (de)
English (en)
Other versions
DE3836797A1 (de
Inventor
Kunio Gotenba Shizuoka Jp Hayakawa
Masahiro Kawanishi Hyogo Jp Nakata
Kaoru Kodera
Osamu Miyazaki
Kouji Toyonaka Osaka Jp Oohara
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Publication of DE3836797A1 publication Critical patent/DE3836797A1/de
Application granted granted Critical
Publication of DE3836797C2 publication Critical patent/DE3836797C2/de
Granted legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B23/00Methine or polymethine dyes, e.g. cyanine dyes
    • C09B23/0091Methine or polymethine dyes, e.g. cyanine dyes having only one heterocyclic ring at one end of the methine chain, e.g. hemicyamines, hemioxonol
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00Duplicating or marking methods; Sheet materials for use therein
    • B41M5/124Duplicating 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
    • B41M5/132Chemical colour-forming components; Additives or binders therefor
    • B41M5/136Organic colour formers, e.g. leuco dyes
    • B41M5/145Organic colour formers, e.g. leuco dyes with a lactone or lactam ring
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/30Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
    • B41M5/323Organic colour formers, e.g. leuco dyes
    • B41M5/327Organic colour formers, e.g. leuco dyes with a lactone or lactam ring
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B11/00Diaryl- or thriarylmethane dyes
    • C09B11/02Diaryl- or thriarylmethane dyes derived from diarylmethanes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)
  • Color Printing (AREA)
DE19883836797 1987-10-29 1988-10-28 Leukofarbstoffe Granted DE3836797A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP27378787 1987-10-29
JP10156388 1988-04-25

Publications (2)

Publication Number Publication Date
DE3836797A1 DE3836797A1 (de) 1989-05-11
DE3836797C2 true DE3836797C2 (enrdf_load_stackoverflow) 1990-05-31

Family

ID=26442433

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19883836797 Granted DE3836797A1 (de) 1987-10-29 1988-10-28 Leukofarbstoffe

Country Status (1)

Country Link
DE (1) DE3836797A1 (enrdf_load_stackoverflow)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4020056A (en) * 1975-04-10 1977-04-26 Ncr Corporation Di-vinyl phthalides color formers
JPS58157779A (ja) * 1982-03-13 1983-09-19 Kanzaki Paper Mfg Co Ltd フタリド誘導体、その製造方法およびその誘導体を用いた感熱記録体
JPS57167979A (en) * 1981-04-08 1982-10-16 Kanzaki Paper Mfg Co Ltd Phthalide derivative, its preparation, recording material using it
JPS59199757A (ja) * 1983-04-28 1984-11-12 Yamamoto Kagaku Gosei Kk フルオレン化合物、その製造法およびそれを用いる記録材料
JPS60226871A (ja) * 1984-04-25 1985-11-12 Yamamoto Kagaku Gosei Kk フルオレン化合物、その製造法および該化合物を用いる記録材料
JPS60231766A (ja) * 1984-05-01 1985-11-18 Ricoh Co Ltd 新規なロイコ染料
JPS6285986A (ja) * 1985-10-11 1987-04-20 Shin Nisso Kako Co Ltd 発色性記録体

Also Published As

Publication number Publication date
DE3836797A1 (de) 1989-05-11

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Free format text: BARZ, P., DIPL.-CHEM. DR.RER.NAT., PAT.-ANW., 80803 MUENCHEN

8339 Ceased/non-payment of the annual fee