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.]
  • Y10T428/24851—Intermediate layer is discontinuous or differential
  • Y10T428/24868—Translucent outer layer
• • 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.]
  • Y10T428/24851—Intermediate layer is discontinuous or differential
  • Y10T428/24868—Translucent outer layer
  • Y10T428/24876—Intermediate layer contains particulate material [e.g., pigment, etc.]
• • 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.]
  • Y10T428/24851—Intermediate layer is discontinuous or differential
  • Y10T428/24868—Translucent outer layer
  • Y10T428/24884—Translucent layer comprises natural oil, wax, resin, gum, glue, gelatin
• • 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

• the invention relates to a carbon film consisting of a colorless plastic film as a layer support, an ink-releasing carbon layer and a thin intermediate layer arranged between the layer support and the carbon layer.
• carbon films serve as sheets for the production of copies when writing an original in the typewriter or as ink ribbons in the typewriter.
• carbon layer is to be understood in the broadest sense, and encompass all layers that contain carbon black or other color pigments or also e.g. magnetic pigments, provided they have a sufficiently dark color.
• paper was used as a carrier for the carbon layer to produce carbon copies, and in order to be able to design the back of the paper, a cover layer with a desired color design was applied, which was then required in a further operation on the cover layer still the ones you want to print figurative and verbal representations.
• paper when using paper as a support for the carbon layer, one also had to rely on an additional coating on the back, because this was the only way to prevent the paper provided with the carbon layer from rolling in the coating as a result of one-sided stresses and thus the practical Difficult to use.
• This intermediate layer which is usually also antistatic, has a layer thickness of only about 2 to 10 ⁇ m.
• the carbon material penetrates into this layer or penetrates through it, as a result of which the rear side of the film does not offer a handsome appearance, but becomes largely dull black.
• the intermediate layer is pigmented with conventional color pigments, i.e. even then there is no color effect on the back of the film.
• a cover layer has hitherto also been applied to the back of carbon films for optical reasons, although it was also necessary here to print on the labels after the cover layer had been applied in a further operation.
• the invention has for its object a carbon To create film that offers a rear appearance with an attractive color design without an additional cover layer and which can be produced in a simple and cost-saving manner.
• the object is achieved in a carbon film of the type mentioned in the invention in that the intermediate layer contains artificial pearlescent pigments.
• Artificial pearlescent pigments are known per se, e.g. from the plastics, coatings and cosmetics industries. They are very finely divided, predominantly flat particles that can be aligned largely parallel to the surface in thinly applied layers, and they are characterized in that they are transparent and therefore show multiple reflection when oriented in parallel. Therefore, you can achieve effects that are very similar to the gloss of the natural pearl, because periodically alternating layers of transparent fabrics with different refractive index are e.g. the building principle characteristic of pearls. It is therefore an important prerequisite for the effect of artificial pearlescent pigments that they have a high refractive index.
• An example of such artificial pearlescent pigments are mica flakes, which may be vapor-coated with color-doped titanium dioxide layers. The titanium dioxide has a refractive index of 2.4 to 2.8.
• the effect of a pearlescent pigment layer is based on the interference colors formed by the refraction and depends on the color of the substrate. Its color is reflected on a light background, so that the intensity of the reflection color is weakened and hardly comes into its own. The luminosity of the reflected color is greatest on a dark surface, since the transmitted light is absorbed.
• the addition of pearlescent pigments to the intermediate layer of carbon films leads to a surprising effect. While hitting the carbon layer had the undesirable effect that the back of the film turned unsightly black and therefore had to be eliminated by an additional coating, the penetration of the carbon layer into an intermediate layer interspersed with pearlescent pigments means that the effect of the Pearlescent pigments required intimate contact with a dark background is created, so that as a result the back of the film appears uniformly shiny in the reflected color and receives an excellent appearance.
• the previously required additional coating of the back of the film can thus be dispensed with, and the film can already be printed on its back before it is coated, the pearlescent pigments emphasizing the printing in a particularly concise manner.
• the invention results in a very considerable simplification for the production of the carbon film.
• the printing process can already take place in the course of the production of the transparent film, which is considerably easier than before, where the film first had to be coated as a separate working step.
• the further and much more serious simplification is achieved by the fact that the operation of coating the back is omitted.

Landscapes

• Laminated Bodies (AREA)
• Duplication Or Marking (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (3)

Family

ID=6089199

Family Applications (1)

Country Status (12)

Families Citing this family (1)

Family Cites Families (8)

• 1980
  • 1980-12-19 ES ES498024A patent/ES8200270A1/es not_active Expired
  • 1980-12-19 YU YU03233/80A patent/YU323380A/xx unknown
  • 1980-12-20 JP JP17972780A patent/JPS56106894A/ja active Pending
  • 1980-12-22 DD DD80226423A patent/DD155600A5/de unknown
  • 1980-12-22 AU AU65662/80A patent/AU544776B2/en not_active Expired - Fee Related
  • 1980-12-22 DE DE8080730082T patent/DE3067299D1/de not_active Expired
  • 1980-12-22 ZA ZA00807993A patent/ZA807993B/xx unknown
  • 1980-12-22 EP EP80730082A patent/EP0032104B1/fr not_active Expired
  • 1980-12-22 AT AT80730082T patent/ATE6840T1/de not_active IP Right Cessation
  • 1980-12-22 US US06/219,090 patent/US4389449A/en not_active Expired - Fee Related
  • 1980-12-22 DK DK547180A patent/DK547180A/da not_active Application Discontinuation
• 1982
  • 1982-01-01 AR AR22633182D patent/AR226331A1/es active

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