ZA723842B - Colourless colour formers for use in copying processes - Google Patents

Colourless colour formers for use in copying processes

Info

Publication number
ZA723842B
ZA723842B ZA723842A ZA723842A ZA723842B ZA 723842 B ZA723842 B ZA 723842B ZA 723842 A ZA723842 A ZA 723842A ZA 723842 A ZA723842 A ZA 723842A ZA 723842 B ZA723842 B ZA 723842B
Authority
ZA
South Africa
Prior art keywords
copying processes
colour formers
colourless colour
colourless
formers
Prior art date
Application number
ZA723842A
Other languages
English (en)
Inventor
A Renfrew
R Evans
K Holt
Original Assignee
Ici 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 Ici Ltd filed Critical Ici Ltd
Publication of ZA723842B publication Critical patent/ZA723842B/xx

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
    • 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
    • B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
    • B41M5/0253—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet using a chemical colour-forming ink, e.g. chemical hectography
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B11/00—Diaryl- or thriarylmethane dyes
    • C09B11/02—Diaryl- or thriarylmethane dyes derived from diarylmethanes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Color Printing (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Peptides Or Proteins (AREA)
  • Paper (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Developing Agents For Electrophotography (AREA)
ZA723842A 1971-06-14 1972-06-06 Colourless colour formers for use in copying processes ZA723842B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2776571 1971-06-14

Publications (1)

Publication Number Publication Date
ZA723842B true ZA723842B (en) 1973-05-30

Family

ID=10264916

Family Applications (2)

Application Number Title Priority Date Filing Date
ZA723842A ZA723842B (en) 1971-06-14 1972-06-06 Colourless colour formers for use in copying processes
ZA723843A ZA723843B (en) 1971-06-14 1972-06-06 Spirit-reproducing carbon papers

Family Applications After (1)

Application Number Title Priority Date Filing Date
ZA723843A ZA723843B (en) 1971-06-14 1972-06-06 Spirit-reproducing carbon papers

Country Status (14)

Country Link
AR (1) AR194248A1 (it)
AT (1) AT318659B (it)
BE (2) BE784875A (it)
BR (2) BR7203824D0 (it)
CH (1) CH577389A5 (it)
CS (1) CS156545B2 (it)
DD (2) DD100909A5 (it)
DE (2) DE2229032C3 (it)
ES (1) ES403844A1 (it)
FR (2) FR2142413A5 (it)
IT (2) IT960689B (it)
LU (2) LU65518A1 (it)
NL (2) NL7208129A (it)
ZA (2) ZA723842B (it)

Also Published As

Publication number Publication date
ZA723843B (en) 1973-05-30
AR194248A1 (es) 1973-06-29
CS156545B2 (it) 1974-07-24
BR7203823D0 (pt) 1973-06-14
NL7208106A (it) 1972-12-18
FR2140687B3 (it) 1975-08-08
IT972151B (it) 1974-05-20
FR2140687A1 (en) 1973-01-19
NL7208129A (it) 1972-12-18
CH577389A5 (it) 1976-07-15
DE2229032B2 (de) 1977-08-11
DE2229031A1 (de) 1973-01-04
AT318659B (de) 1974-11-11
BE784875A (it) 1972-12-14
DE2229032C3 (de) 1978-04-06
FR2142413A5 (it) 1973-01-26
DE2229032A1 (de) 1972-12-21
LU65517A1 (it) 1972-10-23
BE784876A (fr) 1972-12-14
LU65518A1 (it) 1972-10-23
DD100909A5 (it) 1973-10-12
BR7203824D0 (pt) 1973-06-14
DD98693A5 (it) 1973-07-05
ES403844A1 (es) 1975-05-01
IT960689B (it) 1973-11-30

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