GB695548A - Improvements in or relating to means for producing colour-variable writing - Google Patents
Improvements in or relating to means for producing colour-variable writingInfo
- Publication number
- GB695548A GB695548A GB3298349A GB3298349A GB695548A GB 695548 A GB695548 A GB 695548A GB 3298349 A GB3298349 A GB 3298349A GB 3298349 A GB3298349 A GB 3298349A GB 695548 A GB695548 A GB 695548A
- Authority
- GB
- United Kingdom
- Prior art keywords
- colouring materials
- mixed
- bleaching
- colour
- solution
- 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
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
- B41M5/10—Duplicating or marking methods; Sheet materials for use therein by using carbon paper or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J31/00—Ink ribbons; Renovating or testing ink ribbons
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/16—Writing inks
- C09D11/18—Writing inks specially adapted for ball-point writing instruments
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
Abstract
695,548. Colour variable writing & compositions therefor. MERRITT, D. L. Nov. 9, 1950. [Dec. 23, 1949] No. 32983/49. Class 146 (iii). [Also in Group XVI] A colour variable writing composition comprises two or more colouring materials combined in such proportions as to produce a colour different from that of any of the colouring materials, at least one of the colouring materials being bleachable by a reagent which has no bleaching action on at least one of the other colouring materials. In examples (1) a typewriter ribbon is impregnated with an ink made by milling a mixture of Malachite Green A dissolved in oleic acid and Monolite Fast Scarlet R to which thin spindle oil has been added. The black print obtainable from this ribbon may be changed to red by bleaching with sodium hypochlorite solution ; (2) a carbon paper is made by coating paper with a composition obtained by milling a mixture of Malachite Green A dissolved in oleic acid and Monolite Fast Scarlet R admixed with carnauba wax and petroleum jelly; (3) Magenta is mixed with Monastral Blue VS ; (4) Rhodamine B is mixed with Monastral Blue S ; and (5) Acridine Orange A is mixed with carbon black. The ink may also be used directly by means of a writing instrument such as a pen or may be applied to a printing matrix. Bleaching, e.g. with a solution of sodium hypochlorite containing sodium chloride, may be followed by treatment with a dilute solution of hydrochloric or oxalic acid.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3298349A GB695548A (en) | 1949-12-23 | 1949-12-23 | Improvements in or relating to means for producing colour-variable writing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3298349A GB695548A (en) | 1949-12-23 | 1949-12-23 | Improvements in or relating to means for producing colour-variable writing |
Publications (1)
Publication Number | Publication Date |
---|---|
GB695548A true GB695548A (en) | 1953-08-12 |
Family
ID=10346912
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3298349A Expired GB695548A (en) | 1949-12-23 | 1949-12-23 | Improvements in or relating to means for producing colour-variable writing |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB695548A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2138835A (en) * | 1983-04-25 | 1984-10-31 | Sakura Color Prod Corp | Ink composition |
US4604139A (en) * | 1982-02-02 | 1986-08-05 | Sakura Color Products Corp. | Dual color ink composition |
US4657591A (en) * | 1983-03-18 | 1987-04-14 | Sakura Color Products Corp. | Ink composition |
-
1949
- 1949-12-23 GB GB3298349A patent/GB695548A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4604139A (en) * | 1982-02-02 | 1986-08-05 | Sakura Color Products Corp. | Dual color ink composition |
US4657591A (en) * | 1983-03-18 | 1987-04-14 | Sakura Color Products Corp. | Ink composition |
GB2138835A (en) * | 1983-04-25 | 1984-10-31 | Sakura Color Prod Corp | Ink composition |
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