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
  • B41M5/20—Duplicating or marking methods; Sheet materials for use therein using electric current
• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
  • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
  • D21H17/03—Non-macromolecular organic compounds
  • D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
  • D21H17/14—Carboxylic acids; Derivatives thereof
• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
  • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
  • D21H17/63—Inorganic compounds
• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
  • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
  • D21H23/76—Processes or apparatus for adding material to the pulp or to the paper characterised by choice of auxiliary compounds which are added separately from at least one other compound, e.g. to improve the incorporation of the latter or to obtain an enhanced combined effect
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
  • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
  • H01B1/20—Conductive material dispersed in non-conductive organic material
  • H01B1/22—Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L13/00—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00
  • H04L13/02—Details not particular to receiver or transmitter
  • H04L13/06—Tape or page guiding or feeding devices
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
  • H04N1/23—Reproducing arrangements
• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
  • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
  • D21H17/03—Non-macromolecular organic compounds
  • D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
  • D21H17/06—Alcohols; Phenols; Ethers; Aldehydes; Ketones; Acetals; Ketals
• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
  • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
  • D21H17/63—Inorganic compounds
  • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
  • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
  • D21H17/63—Inorganic compounds
  • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
  • D21H17/69—Water-insoluble compounds, e.g. fillers, pigments modified, e.g. by association with other compositions prior to incorporation in the pulp or paper
• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
  • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
  • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
  • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
  • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added

Definitions

• the present invention relates generally to a novel conducting paper, and more particularly to a light colored conducting paper and the method of rendering the fibrous structure of the paper electrically conductive.
• the principal object of this invention is to produce a novel light colored recording paper suitable for use without preparation or treatment supplementary to the recording rocess.
• Another object of this invention is to produce a metal bearing recording paper which is electrically conductive.
• a still further object of this invention is to provide a paper containing aluminum powder and suitable for electrical recording.
• a still further object of this invention is to provide a method of rendering a light colored paper containing aluminum prowder electrically conductive.
• Such material may for example be solid aliphatic and aromatic alcohols, both monohydric and polyhydric, Or aldehyde or ketone type materials with or without a dissolved electrolyte.
• mannitol also known as mannite. This is a hexahydric alcohol and is obtainable in white powder form.
• a second important material is .diglycol stearate, that is, a stearic acid ester of diethylene glycol, which gives results comparable with those of mannitol'
• Another material which will serve as aprotecting medium is erythritol, which is a tetrahydric alcohol;
• erythritol which is a tetrahydric alcohol.
• Each of the polyhydric alcohols mentioned is a simple polyhydric alcohol.
• Other materials may be resorcinol, a dihydroxybenzene, which may be considered a phenolic alcohol, monohydric alcohols where there are tenor more atoms of carbon in the molecule, certain sugars such as dextrose, maltose and sucrose and certain hydroxy and dibasic acids such as succinic or malic acid.
• Higher aldehydes such as paraldol and lactic aldehyde and ketones such as benzophenone are solids and may also be utilized in the same manner.
• Preferred protective materials are solid polyhydric alcohols and their derivatives; however, related materials and their derivatives, such as aldehydes, ketones, sugars and certain hydroxy acids exhibit the same tendencies. Esters of alcohols such as camauba wax are also suitable.
• These materials may be melted and mixed with from 30 to of metal powder, such as aluminum, and allowed to cool.
• metal powder such as aluminum
• This mixture is found to be electrically conductive and may therefore be incorporated in fibrous sheets I such as paper.
• Aluminum is cited by way of example only, since it is obvious that other powdered metals may be substituted, such as copper, brass, bronze, iron, zinc, etc.
• These metallic powders which are obtained in flaky form, such as aluminum, copper, brass, bronze, etc. are preferred due to the greater light reflecting proper-. ties thereof and hence lighter color.
• any of the mixtures of one of the materials named above and a metal powder may be incorporated into a sheet of paper by first introducin the aluminum or other metal powder into a beater with the paper pulp in the usual manner, and after the web is at least partially dried the mixturemay be impregnated with an aqueous or alcoholic solution of one of the materials named above, preferably diglycol stearate or mannite.
• the web may be impregnated by running the ierring the vehicle from a roll to the web.
• glycol stearate and iorm a conducting mixture with the metal powder in the paper.
• Conductive papers of this nature are usually provided with a color-changing material whereby the passage 01 marking current through the paper produces a color change in accordance with the desired pattern to be reproduced thereon.
• Materials such as lead thiosulphate, lead thiocyanate or mercuric sulphide may-be put in the beaters with the metallic powder whereby the material becomes an integral part of the fibrous structure of the paper.
• the coloring material may also be incorporated as a layer external to the web or the paper.
• a conducting paper comprising a fibrous body containing a mixture of finely divided metal particles and a solid, fusible compound of the class consisting of monohydric alcohols, simple polyhydric alcohols, and sugars, dispersed throughout said fibrous body, said compound pro moting conductive intimacy of said metal particles.
• a conducting paper comprising a fibrous body containing a mixture of finely divided metal particles and mannitol dispersed throughout said fibrous body, said mannitol promoting conductive intimacy of said metal particles.
• a conducting paper comprising a fibrous body containing a mixture of finely divided metal particles and erythritol dispersed throughout said fibrous body, said erythritol' promoting conductive intimacy of said metal particles.

Landscapes

• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Signal Processing (AREA)
• Dispersion Chemistry (AREA)
• Inorganic Chemistry (AREA)
• Physics & Mathematics (AREA)
• Multimedia (AREA)
• Spectroscopy & Molecular Physics (AREA)
• Computer Networks & Wireless Communication (AREA)
• Paper (AREA)
• Liquid Developers In Electrophotography (AREA)
• Electrophotography Using Other Than Carlson'S Method (AREA)
• Photoreceptors In Electrophotography (AREA)

Priority Applications (5)

Applications Claiming Priority (1)

Publications (1)

Family

ID=23100223

Family Applications (1)

Country Status (5)

Cited By (16)

Families Citing this family (2)

• 0
  • BE BE460345D patent/BE460345A/xx unknown
• 1939
  • 1939-07-27 US US286804A patent/US2374214A/en not_active Expired - Lifetime
• 1940
  • 1940-07-12 GB GB11634/40A patent/GB537770A/en not_active Expired
  • 1940-07-27 DE DEI3198D patent/DE902111C/de not_active Expired
• 1941
  • 1941-03-22 FR FR889820D patent/FR889820A/fr not_active Expired

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