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
  • Y10S524/00—Synthetic resins or natural rubbers -- part of the class 520 series
  • Y10S524/925—Natural rubber compositions having nonreactive materials, i.e. NRM, other than: carbon, silicon dioxide, glass titanium dioxide, water, hydrocarbon or halohydrocarbon
  • Y10S524/926—Natural rubber compositions having nonreactive materials, i.e. NRM, other than: carbon, silicon dioxide, glass titanium dioxide, water, hydrocarbon or halohydrocarbon with water as NRM, exemplified

Definitions

• the object of my invention is the production of a liquid copying composition to be applied in the form of a thin and smudge-proof coat to the.
• tion or emulsion according to my present invenaside from the film-producing component and v the dye contains only water
• the ordinary ap- Paratus used for dyeing the paper also may be employed for the purpose of applying this dyecarrying paste.
• Transcrit which also operates without the use of carbon paper.
• This process mostly used only for the local printing on of the copyin dye-coat, is employing. however, the very same and relatively expensive dyefilm of the carbon paper, 1. e. a dye containing one therefore also has to "apply a thin coat of a film-producing substance to the surface of the sheet to be copied on.
• Paper treated in accordance with the present invention such as, e. g., coated with a solution of latex, may be written and printed on like any ordinary P per treated with glue.
• the process therefore, also may be made use of ili' making forms to be copied either by hand or by means of the typewriter.
• the process is, e. g., applied as follows: The one side of a roll orsheet of paper first is impregnated with a solution containing, per litre, 20 grams of Revertex T (a latex-concentrate containing about 75% dry substance) to which, if need be and so desired, protective agents against a e. g. phenyl-betanaphtylamin,- are added.
• Revertex T a latex-concentrate containing about 75% dry substance
• a further pronounced difierence between the' present and the known processes is that the paper of the former has to be coated on both sides.
• the dye on the back of the sheet, bound by the sulfonates etc. known to the trade under the film-producing substance such as, e. g., latex,
• a protective meansragainst aging may be added.
• a variation of the process described consists in .using unglued paper, substituting the passing of the paper through a Revertex-solution for the After such a passage the coat is dried and then the dye-film spread on.

Landscapes

• Paper (AREA)
• Color Printing (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=5774988

Family Applications (1)

Country Status (6)

Cited By (2)

Families Citing this family (2)

• 0
  • BE BE423600D patent/BE423600A/xx unknown
  • NL NL47381D patent/NL47381C/xx active
• 1937
  • 1937-09-07 US US162764A patent/US2279604A/en not_active Expired - Lifetime
  • 1937-09-09 GB GB24615/37A patent/GB501983A/en not_active Expired
  • 1937-09-15 FR FR826767D patent/FR826767A/fr not_active Expired
  • 1937-09-15 CH CH203156D patent/CH203156A/de unknown

Also Published As

Similar Documents