CH490972A - Form and carbon copy typeset using color reaction papers - Google Patents

Form and carbon copy typeset using color reaction papers

Info

Publication number
CH490972A
CH490972A CH870769A CH870769A CH490972A CH 490972 A CH490972 A CH 490972A CH 870769 A CH870769 A CH 870769A CH 870769 A CH870769 A CH 870769A CH 490972 A CH490972 A CH 490972A
Authority
CH
Switzerland
Prior art keywords
typeset
color reaction
carbon copy
reaction papers
papers
Prior art date
Application number
CH870769A
Other languages
German (de)
Inventor
Kunkel Ernst
Original Assignee
Pelikan Werke Wagner Guenther
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 Pelikan Werke Wagner Guenther filed Critical Pelikan Werke Wagner Guenther
Publication of CH490972A publication Critical patent/CH490972A/en

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
    • 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
    • B41M5/15—Spiro-pyrans

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Color Printing (AREA)
  • Paints Or Removers (AREA)
CH870769A 1968-06-22 1969-06-09 Form and carbon copy typeset using color reaction papers CH490972A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19681761678 DE1761678A1 (en) 1968-06-22 1968-06-22 Writing set made of color icon papers
NL6910550A NL6910550A (en) 1968-06-22 1969-07-09

Publications (1)

Publication Number Publication Date
CH490972A true CH490972A (en) 1970-05-31

Family

ID=25755281

Family Applications (1)

Application Number Title Priority Date Filing Date
CH870769A CH490972A (en) 1968-06-22 1969-06-09 Form and carbon copy typeset using color reaction papers

Country Status (7)

Country Link
BE (1) BE724978A (en)
CH (1) CH490972A (en)
DE (1) DE1761678A1 (en)
FR (1) FR1593459A (en)
GB (1) GB1210996A (en)
LU (1) LU57270A1 (en)
NL (1) NL6910550A (en)

Also Published As

Publication number Publication date
DE1761678A1 (en) 1971-08-05
GB1210996A (en) 1970-11-04
FR1593459A (en) 1970-05-25
LU57270A1 (en) 1970-05-13
NL6910550A (en) 1971-01-12
BE724978A (en) 1969-06-05

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Legal Events

Date Code Title Description
PL Patent ceased