FR2184699B1 - - Google Patents

Info

Publication number
FR2184699B1
FR2184699B1 FR7317040A FR7317040A FR2184699B1 FR 2184699 B1 FR2184699 B1 FR 2184699B1 FR 7317040 A FR7317040 A FR 7317040A FR 7317040 A FR7317040 A FR 7317040A FR 2184699 B1 FR2184699 B1 FR 2184699B1
Authority
FR
France
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
Application number
FR7317040A
Other versions
FR2184699A1 (fr
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.)
NCR Voyix Corp
Original Assignee
NCR 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 NCR Corp filed Critical NCR Corp
Publication of FR2184699A1 publication Critical patent/FR2184699A1/fr
Application granted granted Critical
Publication of FR2184699B1 publication Critical patent/FR2184699B1/fr
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
    • B41M5/124—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
    • B41M5/132—Chemical colour-forming components; Additives or binders therefor
    • B41M5/136—Organic colour formers, e.g. leuco dyes
    • B41M5/145—Organic colour formers, e.g. leuco dyes with a lactone or lactam ring

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Indole Compounds (AREA)
  • Color Printing (AREA)
FR7317040A 1972-05-12 1973-05-11 Expired FR2184699B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00252785A US3812146A (en) 1972-05-12 1972-05-12 Phthalide

Publications (2)

Publication Number Publication Date
FR2184699A1 FR2184699A1 (fr) 1973-12-28
FR2184699B1 true FR2184699B1 (fr) 1978-08-04

Family

ID=22957539

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7317040A Expired FR2184699B1 (fr) 1972-05-12 1973-05-11

Country Status (6)

Country Link
US (1) US3812146A (fr)
BE (1) BE799406A (fr)
DE (1) DE2322497C3 (fr)
ES (1) ES414206A1 (fr)
FR (1) FR2184699B1 (fr)
GB (1) GB1379712A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3899511A (en) * 1971-08-30 1975-08-12 Polaroid Corp Photographic processes and products employing benzindole phthaleins as optical filter agents
GB1467898A (en) * 1974-04-09 1977-03-23 Ciba Geigy Ag Heterocyclic substituted lactone compounds their manufacture and use
US4075224A (en) * 1976-01-22 1978-02-21 Sterling Drug Inc. 3,5-Bis (indolyl)-5-(indolyl)-2(5H)-furanones
US4189171A (en) * 1977-03-01 1980-02-19 Sterling Drug Inc. Marking systems containing 3-aryl-3-heterylphthalides and 3,3-bis(heteryl)phthalides

Also Published As

Publication number Publication date
FR2184699A1 (fr) 1973-12-28
US3812146A (en) 1974-05-21
BE799406A (fr) 1973-08-31
DE2322497C3 (de) 1979-02-15
ES414206A1 (es) 1976-05-01
GB1379712A (en) 1975-01-08
DE2322497A1 (de) 1973-11-29
DE2322497B2 (de) 1978-06-22

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Legal Events

Date Code Title Description
CD Change of name or company name
TP Transmission of property
TP Transmission of property
ST Notification of lapse