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
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
  • B01J13/02—Making microcapsules or microballoons
  • B01J13/025—Applications of microcapsules not provided for in other subclasses
• • 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
  • B41J31/02—Ink ribbons characterised by the material from which they are woven
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
  • B41M1/00—Inking and printing with a printer's forme
  • B41M1/26—Printing on other surfaces than ordinary paper
  • B41M1/36—Printing on other surfaces than ordinary paper on pretreated paper, e.g. parchment, oiled paper, paper for registration purposes
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
  • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
  • D06P5/001—Special chemical aspects of printing textile materials
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S101/00—Printing
  • Y10S101/29—Printing involving a color-forming phenomenon

Definitions

• This invention relates to a method of making difierent colored marks with a single fluid and more particularly pertains to a liquid containing an ink and a color-forming reactant to be used in conjunction with sensitized and unsensitized record material, said fluid, when applied to unsensitized record material, without visually perceptible delay making a permanently stable color mark thereon by reason of the intrinsic color of the ink, and, when applied to sensitized record material, without visually perceptible delay making a permanently stable differently colored mark thereon by reason of the intrinsic color of the ink blending with the color produced in the colorforming reactant on contact with the sensitized record material.
• a fluid is first prepared containing a selected ink and a selected color-forming reactant, and then the dualpurpose fluid is applied selectively to unsensitized or sensitized receiving material.
• the ink may be of either the dye or the pigment. type, and the color-forming reactant may be a liquid or a solid which is dissolved so as to form a fluid mixture with the ink.
• the ink if it is itself a fluid, may be used as a solvent or vehicle for the color-forming reactant or vice versa. In any instance, it is proposed that the color-forming reactant will remain in its unreacted state in the fluid or as marks of dried fluid unless it comes into contact with the sensitized material.
• the invention is primarily important in the field of record keeping, where the distinctiveness of the aminophenyl) 6-dime thylamino phthalide, having the two difierent colors must be maintained, it is important vat dyes, which are sometimes used in conjunction with inks in the so-called fraud-preventing inks, such as those described in United States Patent No. 2,068,204, which issued on the application of B, W. Smith.
• Another object of the invention is to provide such a method in which the ink color blends with the color formed by the color-forming reactant, on reaction, to produce a color distinctive from that of the ink and unreacted color-forming reactant.
• the invention will be described as embodied in a preferred and other forms, showing its utility and noveltyl
• the method will be assumed to be used in conjunction with paper having sensitized and unsensitized areas.
• the s'ensitiz'a-j tion is carried out by application to the paper of fine particles of attapulgite, sometimes known as Attapulg'us clay, which is white and ideally suited as a paper coating in the mannerthatother clays are ordinarily used.
• This attapulgite 'inay' be applied to the'paper by use of paper coating starch in'the following manner: Twenty per cent, by weight, of paper coating starch in water is cooked at 200 degrees Fahrenheit for fifteen minutes and, after cooling, adding to one part, by weight, of the cooked starch four parts, by weight, of a dispersion of one part, by weight, of attapulgite in three parts, by weight, of water. This coating material is applied to paper, on selected areas, at room temperature, and
• the recommended thickness of the coating may be varied considerably.
• the preferred fluid is made by dissolving three per cent, -by-weight, of crystal violet lactone, which is'3,3,bis(p-dimethyl structure and three per cent, byweight, of vthe red dye Sudan III, which is 9% per cen-t-., by weight, of chlorinated diphenyl of 48- per cent, by weight, chlorine contentv
• the fluid is then ready to be absorbed: in a stamp pad, transferred to the stamp, and applied by the stamp to sensitized or nnsensit-izedareas of the paper, as desired;
• This fluid is normally red and will make a reel print when applied By the stamp to unsensitized record material but will make a very dark purplish print when applied to record materialsensit-i'zed' by the attapulgite.
• Crystal violet lactone may he produced by a method described in United States Patent No: Re. 23,024, which issued on the application of Clyde S. Adams There'may'be substituted for the crystal violet lact'one of the preferred embodiment other color-forming react ants which are considered equivalents of that compound, which: have a normally colorless state, and which assome a color, without visuallyperceptible delay, when in adsorption contact with atta'pu'lgit'e'.
• the compound 3,3 bisp-diethylaminophenyl),-6- dimethylamino phthalidq. having: the structure itcliils producing a dark blue color
• the compound o-hydroxybenzalacetophenone having the structure v H v which normally is or a light yellow color and produces, on reaction, a reddish-yellow color, such being suitable for use with blue dye to produce a green mark on sensitized paper and a purple mark on unsensitized paper.
• color reactants 1 to 8 react with halloysite, magnesium trisilicate, and sodium aluminum silicate zeolite material, all suitable for making recording surfaces and all to be considered equivalents of attapulgite.
• Color reactants 9 and 10 additionally, react with bentonite and halloysite.
• the sensitized surface may be prepared by binding such sensitizing material in any way, as by adhesives or paints which do not mask the surface of the particles, so that they remain available to the fluid-carried color-forming reactant applied thereto.
• any color-reactant compound that may be carried in a liquid vehicle, which compound is color-stable in light or air in the uncolored or unreacted form in which it is present in the unapplied printing fluid, which is color-stable on unsensitized record material in the presence of light or air, but which will turn to a colored form on contact with record material sensitized as specified, without visually perceptible delay, and remain colorstable in the colored form in the presence of light or air.
• compounds of the vat dye class disclosed in the before-mentioned United States Patent No. 2,068,204, which issued on the application of B. W.
• the embodiments of the invention disclosed produce marks that usefully are color-stable to the aging influence of light and the atmosphere.
• the inks are stable in color on both the unsensitized and sensitized areas of the associated record material.
• the color reactant in the applied fluid is stable to light and atmospheric aging in the unreacted condition on the unsensitized portions of the record material and likewise stable in the reacted color condition on the sensitized portions of the record material.
• the use of pigments in the ink is contemplated if such are selected so as not to mask the color produced by the color-forming reactant material.
• sensitized and unsensitized materials may be separate entities and not merely areas on a single unitary surface.
• the method of making, by use of a single marking fluid, marks of one color on unsensitized record material and marks of another color on: record material sensitized with particles of attapulgite including the step of applying, according to the required configuration to form the marks, to the unsensitized record material and to the sensitized record material, as desired, a colored marking fluid including as a component thereof the normally substantially colorless color reactant 3,3 bis(p-dimethylaminophenyl) G-dimethylamino phthalide, having the structure and which is stable to light or air on the unsensitized record material, but turns dark blue, without visually perceptible delay, upon coming into contact with record material sensitized with attapulgite, whereby marks made on unsensitized record material are distinctively difierent in color from marks made on sensitized record material.
• the method of making marks of different color on a single piece of record material, by use of a single marking fluid including the steps of preparing markingfluid-receiving record material by sensitizing selected areas of the record material by applying thereto particles of attapulgite; preparing a marking fluid having a normal color and having therein a substantially colorless fluid vehicle in which has been dispersed 3,3 bis(p-dimethylaminophenyl) 6-dimethy1amino phthalide, having the and selectively applying the fluid to sensitized and unsensistructure 7 tiied ziras 6f the fc'ofd material, as desired.

Landscapes

• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Organic Chemistry (AREA)
• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• General Chemical & Material Sciences (AREA)
• Dispersion Chemistry (AREA)
• Color Printing (AREA)
• Inks, Pencil-Leads, Or Crayons (AREA)
• Heat Sensitive Colour Forming Recording (AREA)

Priority Applications (7)

Applications Claiming Priority (2)

Publications (1)

Family

ID=26739883

Family Applications (1)

Country Status (6)

Cited By (7)

Families Citing this family (1)

Citations (5)

• 0
  • NL NL71971D patent/NL71971C/xx active
  • FR FR999064D patent/FR999064A/fr not_active Expired
  • BE BE492062D patent/BE492062A/xx unknown
• 1949
  • 1949-11-12 CH CH292807D patent/CH292807A/fr unknown
  • 1949-11-16 DE DEN160A patent/DE853455C/de not_active Expired
  • 1949-11-16 DE DEN161D patent/DE851641C/de not_active Expired
• 1952
  • 1952-05-28 US US290556A patent/US2714074A/en not_active Expired - Lifetime

Patent Citations (5)

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