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
• • 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
  • Y10S428/00—Stock material or miscellaneous articles
  • Y10S428/914—Transfer or decalcomania
• • 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
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
  • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
  • Y10T428/24893—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including particulate material
  • Y10T428/24901—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including particulate material including coloring matter

Definitions

• This invention relates to a duplicating material comprising a color layer, which under writing or typing pressure is selectively transferable to copy sheets provided with a special adhesive layer. It is an object of the present invention to inhibit the above-mentioned transferability in predetermined areas of the duplicating set.
• duplicating systems making use of so-called selective ink transfer are particularly suitable for such form sets because their manufacture is simple and inexpensive.
• the uppermost sheet to be written or typed upon is provided on the rear with a color layer, which under the writing or typing pressure is not transferable to ordinary paper but is transferable to papers which on the side facing the color layer are provided with a colorreceiving layer.
• This color-receiving layer acts substantially as an auxiliary adhesive.
• auxiliary adhesives numerous waxes are suitable, as well as plastic materials, such as polyethylene, polyisobutylene, vinyl polymers and others.
• blank areas could be provided by omitting in those areas in which copies are not desired the transferable color layer or the adhesive primer forming the receiving layer.
• Such layers can be made only by special coating equipment not available in a formprinting office. Only an endless coating of such webs will be economical, the layer either extending throughout the width of the web or being applied, at best, in strips which extend throughout the length of the web.
• the additional hinder or resist layer is desirably applied in such a manner that it at least partially fills the interstices of the color layer.
• the additional binder may consist, e.g., of a wax. In this case a hot printing process is utilised to apply the wax.
• a filmforming material soluble in a volatile solvent may be used, such as polyvinylacetate, polyisobutylene, cellulose derivatives or the like substances. In this case it is recommendable to apply the additional binder by flexographic printing.
• the additional binder may have the same composition as the auxiliary adhesive used as a receiving layer on the copy sheet.
• a duplicating material comprising a color layer not transferable alone, which color layer is covered by a layer of adhesive plastics material.
• That layer of adhesive plastics material serves as an auxiliary adhesive and under the writing or typing pressure causes the color layer to be transferred to ordinary paper.
• the materials intended to be used as such auxiliary adhesives for a coating layer belong in part to the same class of substances as those which according to the invention are used as a resist to inhibit copying transfer. While the mechanism of this surprising behaviour cannot yet be fully explained, it is believed that the binder of the cover layer partly fills the pores between the binder particles in the color layer and thus increases the cohesion of the color layer. It is impotant for this reason that the additional layer be applied from a homogeneous solution or melt so that it can penetrate the surface of the color layer.
• a coating mixture having the following composition is applied to the rear side of the top sheet:
• color layer of sheet (A) is covered in discrete areas with a further layer (C) consisting of a mixture of percent by weight paraffin 20 percent by weight polyisobutylene (Oppanol B50 of Badische Anilin & Soda-Fabrik AG, Ludwigshafen, West Germany) which mixture is applied in a molten state; the transfer copying ability in the areas covered with this layer C will be entirely eliminated.
• C a further layer consisting of a mixture of percent by weight paraffin 20 percent by weight polyisobutylene (Oppanol B50 of Badische Anilin & Soda-Fabrik AG, Ludwigshafen, West Germany) which mixture is applied in a molten state; the transfer copying ability in the areas covered with this layer C will be entirely eliminated.
• EXAMPLE 2 A color layer (A) as described in Example 1 is coated by printing in certain fields with a cover layer (C) using the following mixture:
• a selectively transferable color layer (A) is formed by the application of the following mixture:
• a cover layer (C) having the same composition as the cover Layer (C) described in Example 1 is applied to the color layer (A) by hot printing
• the receiving sheet is provided with a layer (B) having the same composition as cover layer (C). In this case too transfer copies may be produced in areas only in which there is no cover layer (C) over the color layer (A).
• a color layer (A) is made by the application of the following mixture:
• a cover layer C consisting of polyisobutylene.
• the copy sheet is coated with a color-receiving layer (B) which has the same composition as the cover layer (C). Copies can be produced only in those areas of the color layer (A) not provided with the cover layer (C).
• EXAMPLE 5 A color layer (A) as described in Example 3 is covered with a cover layer (C) applied as a molten mixture having the following composition:
• polyethylene (AC6 of Allied Chemical Corporation, New York, U.S.A.)
• the copy sheet is provided with an adhesive layer (B) as described in Example 4.
• EXAMPLE 6 A color layer (A) as described in Example I is pro vided by flexographic printing with a cover layer (C) applied as a mixture of 15 percent by weight Movilith 5O (poly-'vinylacetate) 85 percent by weight alcohol
• the copy sheet is the same as in Examples 1 and 2. Transfer copies are produced only in the areas which are not provided with a cover layer (C).
• EXAMPLE 7 A color layer (A) as described in Example 4 is provided in various areas with a layer (C) of ozokerite (softening point C) by hot printing (hot-spot). The copy sheet is covered with a layer (B) having the same composition as cover layer (C) so that it corresponds exactly to the receiving sheet of Example 1.
• the mixtures mentioned in the Examples for the several layers (A), (B), and (C) may be used in combina tions other than those mentioned in the Examples. provided that the solubility of the resins and plastics materials for the color layer is taken into consideration in the selection of the solvent for the cover layer. Care must be exercised to prevent the situation in which the solvent for the cover layer attacks the binder for the color layer so strongly that the color layer is lifted off in the printing machine and soils the cylinders.
• a duplicating material comprising a color layer which has a loosened structure and is pressure selectively transferable to a receiving sheet which is provided with a special adhesive layer, the transfer of the color layer being inhibited in certain areas by a resist which is applied to the color layer in those areas in which a transfer of the color layer is to be inhibited, said resist at least partially filling the interstices of the color layer, with the result that blocked areas are provided on the color layer which will not transfer from one sheet to another.
• a duplicating material according to claim 3, wherein the resist has the same chemical composition as the adhesive layer provided on the receiving sheet. l

Landscapes

• Color Printing (AREA)
• Thermal Transfer Or Thermal Recording In General (AREA)
• Medicinal Preparation (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=3553461

Family Applications (1)

Country Status (7)

Cited By (1)

Citations (8)

• 1971
  • 1971-04-28 AT AT365171A patent/AT308149B/de not_active IP Right Cessation
• 1972
  • 1972-04-01 DE DE19722216122 patent/DE2216122A1/de active Pending
  • 1972-04-10 ZA ZA722410A patent/ZA722410B/xx unknown
  • 1972-04-18 ES ES401872A patent/ES401872A1/es not_active Expired
  • 1972-04-21 GB GB1870172A patent/GB1389296A/en not_active Expired
  • 1972-04-24 FR FR7214410A patent/FR2136636A5/fr not_active Expired
  • 1972-04-25 US US00247463A patent/US3837888A/en not_active Expired - Lifetime

Patent Citations (8)

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