FR2440674A1 - Heater for processing thermally sensitive paper - has electrodes providing HF field parallel to sliding plane of paper - Google Patents

Heater for processing thermally sensitive paper - has electrodes providing HF field parallel to sliding plane of paper

Info

Publication number
FR2440674A1
FR2440674A1 FR7831224A FR7831224A FR2440674A1 FR 2440674 A1 FR2440674 A1 FR 2440674A1 FR 7831224 A FR7831224 A FR 7831224A FR 7831224 A FR7831224 A FR 7831224A FR 2440674 A1 FR2440674 A1 FR 2440674A1
Authority
FR
France
Prior art keywords
electrodes
paper
heater
sliding plane
thermally sensitive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
FR7831224A
Other languages
French (fr)
Inventor
Pierre Cassagne
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Societe des Telephones Ericsson SA
Original Assignee
Societe des Telephones Ericsson SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Societe des Telephones Ericsson SA filed Critical Societe des Telephones Ericsson SA
Priority to FR7831224A priority Critical patent/FR2440674A1/en
Publication of FR2440674A1 publication Critical patent/FR2440674A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/46—Dielectric heating
    • H05B6/60—Arrangements for continuous movement of material
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/46—Dielectric heating
    • H05B6/54—Electrodes

Abstract

The heater is powered from the dielectric loss of a material at a h.f. This is used to process isolating material in sheet form and allows the system to be used for reproduction of information received from a transmission line on a paper coated with thermosensitive material. The electrodes (10, 11) of the heater provide an HF electrical field whose lines of force are parallel to the sliding plane of a sheet (12) of material being processed. The electrodes are mounted in grooves in a bar of isolating material through which the sheet passes. A supplementary conductor (18) is used when a very high operating frequency is employed. The electrodes are driven from an oscillator (19) which drives a power stage comprising a transistor (21) through a low value capacitor (20). The electrodes are connected to a step up auto transformer (24) in the collector circuit.
FR7831224A 1978-11-03 1978-11-03 Heater for processing thermally sensitive paper - has electrodes providing HF field parallel to sliding plane of paper Withdrawn FR2440674A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7831224A FR2440674A1 (en) 1978-11-03 1978-11-03 Heater for processing thermally sensitive paper - has electrodes providing HF field parallel to sliding plane of paper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7831224A FR2440674A1 (en) 1978-11-03 1978-11-03 Heater for processing thermally sensitive paper - has electrodes providing HF field parallel to sliding plane of paper

Publications (1)

Publication Number Publication Date
FR2440674A1 true FR2440674A1 (en) 1980-05-30

Family

ID=9214460

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7831224A Withdrawn FR2440674A1 (en) 1978-11-03 1978-11-03 Heater for processing thermally sensitive paper - has electrodes providing HF field parallel to sliding plane of paper

Country Status (1)

Country Link
FR (1) FR2440674A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0535445A2 (en) * 1991-10-02 1993-04-07 H. Krantz GmbH & Co. Highfrequency dielectric heating oven with continuous movement of material
EP0651590A2 (en) * 1993-10-27 1995-05-03 STALAM S.r.l. Radio-frequency heating device for dielectric materials
US6246040B1 (en) * 1999-01-29 2001-06-12 Bradley R. Gunn Solid state RF generator for dielectric heating of food products

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB739332A (en) * 1954-01-07 1955-10-26 Julius Walter Mann Split pole parallel dielectric heating bonding process
US2870544A (en) * 1956-01-24 1959-01-27 Armstrong Cork Co Method of drying fibrous boards
DE1085984B (en) * 1955-06-06 1960-07-28 Pye Ltd Electrode arrangement for use in high frequency heating
FR2109628A5 (en) * 1970-06-23 1972-05-26 Koreska Gmbh W

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB739332A (en) * 1954-01-07 1955-10-26 Julius Walter Mann Split pole parallel dielectric heating bonding process
DE1085984B (en) * 1955-06-06 1960-07-28 Pye Ltd Electrode arrangement for use in high frequency heating
US2870544A (en) * 1956-01-24 1959-01-27 Armstrong Cork Co Method of drying fibrous boards
FR2109628A5 (en) * 1970-06-23 1972-05-26 Koreska Gmbh W

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0535445A2 (en) * 1991-10-02 1993-04-07 H. Krantz GmbH & Co. Highfrequency dielectric heating oven with continuous movement of material
EP0535445A3 (en) * 1991-10-02 1993-08-04 H. Krantz Gmbh & Co. Highfrequency dielectric heating oven with continuous movement of material
EP0651590A2 (en) * 1993-10-27 1995-05-03 STALAM S.r.l. Radio-frequency heating device for dielectric materials
EP0651590A3 (en) * 1993-10-27 1995-09-27 Stalam Srl Radio-frequency heating device for dielectric materials.
US6246040B1 (en) * 1999-01-29 2001-06-12 Bradley R. Gunn Solid state RF generator for dielectric heating of food products

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