US3891991A - Recording apparatus with improved counterelectrode - Google Patents

Recording apparatus with improved counterelectrode Download PDF

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Publication number
US3891991A
US3891991A US400319A US40031973A US3891991A US 3891991 A US3891991 A US 3891991A US 400319 A US400319 A US 400319A US 40031973 A US40031973 A US 40031973A US 3891991 A US3891991 A US 3891991A
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US
United States
Prior art keywords
web
counterelectrode
combination
path
roller
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.)
Expired - Lifetime
Application number
US400319A
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English (en)
Inventor
Kurt Hurst
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Application granted granted Critical
Publication of US3891991A publication Critical patent/US3891991A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/385—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective supply of electric current or selective application of magnetism to a printing or impression-transfer material
    • B41J2/425—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective supply of electric current or selective application of magnetism to a printing or impression-transfer material for removing surface layer selectively from electro-sensitive material, e.g. metal coated paper
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D15/00—Component parts of recorders for measuring arrangements not specially adapted for a specific variable
    • G01D15/06—Electric recording elements, e.g. electrolytic

Definitions

  • the present invention relates to apparatus for recording intelligence on tapes or webs, and more particularly for recording intelligence on webs of electrosensitive paper or the like. Still more particularly, the invention relates to improvements in electrode means for recording intelligence on a tape or web of electrosensitive material.
  • roller-shaped counterelectrodes A drawback of presently known roller-shaped counterelectrodes is that their peripheral surfaces are likely to become contaminated after relatively short periods of use and the layer of foreign matter on the roller-shaped electrodes adversely affects the flow of current between the conductive film and the electrodes, especially if the web is coated with aluminum.
  • An object of the invention is to provide a novel and improved counterelectrode which can be used in apparatus for recording information on electrosensitive webs or tapes and which remains in a highly satisfactory contact with the conductive film of the web even if the film consists of aluminum.
  • Another object of the invention is to provide a counterelectrode in an apparatus for recording information on electrosensitive webs or tapes with novel and improved web-contacting means which insures a satisfactory contact with the conductive film irrespective of whether or not the counterelectrode is freshly installed in the apparatus or is in use for an extended period of time.
  • a further object of the invention is to provide a counterelectrode which can be installed in existing recording apparatus.
  • the invention is embodied in an apparatus for recording intelligence on an electrosensitive web which may include a strip of paper one side of which is coated with aluminum or another metal.
  • the apparatus comprises transporting means which serves to advance a web lengthwise, along a predetermined path and includes a roller or another suitable advancing member which engages one side of the web in the predetermined path, at least one first electrode which contacts the other side of the web, and a counterelectrode which is adjacent to the other side of the web opposite the advancing member and has a plurality of web-engaging projections, e.g., in the form of an external thread whose helices are biased against the other side of the web.
  • the counterelectrode may constitute a roller which extends transversely of the path of the web and is parallel to the advancing member of the transporting means.
  • the projections are preferably uniformly distributed at the periphery of the counterelectrode.
  • FIG. 1 is a fragmentary perspective view of a recording apparatus wherein the counterelectrode is constructed in accordance with the invention.
  • FIG. 2 is an elevational view of the counterelectrode.
  • FIG. 1 shows an apparatus wherein a driven roller 1 which forms part of a transporting mechanism serves to advance a web 2 of electrosensitive paper in the direction indicated by arrow A.
  • the reference character 3 denotes an amplifier one output of which is connected to a first electrode 4 constituting a writing head and another output of which is connected to a second electrode 5 which constitutes a counterelectrode and is constructed, assembled and mounted in accordance with the present invention.
  • the counterelectrode 5 is a roller shaped body having a shaft 6 which is mounted in bearings 70, 7b and is biased by helical springs 80, 8b or analogous biasing means so as to urge the counterelectrode against the conductive film at the upper side of the web 2. As shown, the counterelectrode 5 biases the web 2 against the periphery of the advancing roller I ahead of the point where the writing head 4 engages the conductive film of the web. Such film is assumed to consist of aluminum.
  • FIG. 2 shows that the counterelectrode 5 is formed with uniformly distributed external projections 5a which alternate with helical grooves and constitute a helical thread.
  • the top lands of the helices which form the thread 5a engage the conductive film of the web 2 to thus insure that current flowing between the electrodes 4, S encounters minimal resistance at the points where the threads 5a engage the web.
  • the springs 80, 8b are strong enough to insure that the threads 50 bear against the conductive layer of the web 2 with a substantial force.
  • threads 5a reduces the total area of contact between the web 2 and counterelectrode 5 with the result that the conditions for establishing a satisfactory path for electric current are much more satisfactory than in conventional apparatus wherein the counterelectrode is a roller having a cylindrical web-engaging peripheral surface.
  • the manner of completing the circuit of the electrodes 4, 5 and amplifier 3 in order to record intelligence on the web 2 is known in the art and, therefore, is not shown in the drawing.
  • the apparatus may comprise two or more writing heads.
  • a combination comprising transporting means arranged to advance a web lengthwise along a predetermined path and including an advancing member engaging one side of the web in said path; at least one writing electrode contacting the other side of the web in said path; and a counterelectrode adjacent to said other side of the web opposite said advancing member, said counterelectrode having a plurality of web-engaging projections forming part of an external thread on said counterelectrode.
  • said advancing member is a roller which extends transversely of said path and said counterelectrode constitutes a second roller which is parallel to said first mentioned roller.
  • a combination comprising transporting means arranged to advance a web lengthwise along a predetermined path and including an advancing member engaging one side of the web in said path; at least one writing electrode contacting the other side of the web in said path; and a counterelectrode adjacent to said other side of the web opposite said advancing member, said counterelectrode having a plurality of web-engaging projections, said counterelectrode constituting a roller extending transversely of said path and said projections being uniformly distributed at the periphery of said roller.
  • a combination as defined in claim 6, further comprising means for biasing said counterelectrode against said other side of the web in said path so that said projections urge the one side of the web against said advancing member.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electronic Switches (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
  • Recording Measured Values (AREA)
  • Facsimile Heads (AREA)
US400319A 1972-10-02 1973-09-24 Recording apparatus with improved counterelectrode Expired - Lifetime US3891991A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722248318 DE2248318A1 (de) 1972-10-02 1972-10-02 Schreibgeraet

Publications (1)

Publication Number Publication Date
US3891991A true US3891991A (en) 1975-06-24

Family

ID=5858010

Family Applications (1)

Application Number Title Priority Date Filing Date
US400319A Expired - Lifetime US3891991A (en) 1972-10-02 1973-09-24 Recording apparatus with improved counterelectrode

Country Status (10)

Country Link
US (1) US3891991A (enrdf_load_stackoverflow)
JP (1) JPS4974048A (enrdf_load_stackoverflow)
AT (1) AT337471B (enrdf_load_stackoverflow)
CH (1) CH551284A (enrdf_load_stackoverflow)
DE (1) DE2248318A1 (enrdf_load_stackoverflow)
FR (1) FR2201651A5 (enrdf_load_stackoverflow)
GB (1) GB1382930A (enrdf_load_stackoverflow)
IT (1) IT993963B (enrdf_load_stackoverflow)
NL (1) NL158741B (enrdf_load_stackoverflow)
SE (1) SE383292B (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4176364A (en) * 1975-09-09 1979-11-27 Sci Systems, Inc. Grounding device for rotary electrical printer and method
US4287607A (en) * 1979-05-17 1981-09-08 Burlington Industries, Inc. Ballistic vests
US4408908A (en) * 1980-12-19 1983-10-11 International Business Machines Corporation Ribbon feed system for a matrix printer

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5137947U (enrdf_load_stackoverflow) * 1974-09-12 1976-03-22
DE2619442C2 (de) * 1976-05-03 1983-04-28 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Andruck- und Haltevorrichtung für einen Druckkopf eines elektrographischen Druckers
FR3132888B1 (fr) 2022-02-24 2024-06-07 Psa Automobiles Sa Pièce de butée optimisée pour un panneau arrière d’un véhicule

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2391765A (en) * 1942-09-21 1945-12-25 Rca Corp Facsimile apparatus
US2391768A (en) * 1941-01-30 1945-12-25 Rca Corp Facsimile recorder
US2785944A (en) * 1953-06-30 1957-03-19 Faximile Inc Facsimile recorder
US3314072A (en) * 1962-12-31 1967-04-11 Columbia Broadcasting Syst Inc Electrolytic recording apparatus with continuously moving contact surface
US3435190A (en) * 1964-08-26 1969-03-25 Grace W R & Co Apparatus for perforating film
US3596282A (en) * 1968-02-20 1971-07-27 Milgo Electronic Corp Marking mechanism including a thin edged wheel stylus for electrosensitive recorder
US3781904A (en) * 1971-05-12 1973-12-25 Olympia Werke Ag Apparatus for producing raster dot images

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2391768A (en) * 1941-01-30 1945-12-25 Rca Corp Facsimile recorder
US2391765A (en) * 1942-09-21 1945-12-25 Rca Corp Facsimile apparatus
US2785944A (en) * 1953-06-30 1957-03-19 Faximile Inc Facsimile recorder
US3314072A (en) * 1962-12-31 1967-04-11 Columbia Broadcasting Syst Inc Electrolytic recording apparatus with continuously moving contact surface
US3435190A (en) * 1964-08-26 1969-03-25 Grace W R & Co Apparatus for perforating film
US3596282A (en) * 1968-02-20 1971-07-27 Milgo Electronic Corp Marking mechanism including a thin edged wheel stylus for electrosensitive recorder
US3781904A (en) * 1971-05-12 1973-12-25 Olympia Werke Ag Apparatus for producing raster dot images

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4176364A (en) * 1975-09-09 1979-11-27 Sci Systems, Inc. Grounding device for rotary electrical printer and method
US4287607A (en) * 1979-05-17 1981-09-08 Burlington Industries, Inc. Ballistic vests
US4408908A (en) * 1980-12-19 1983-10-11 International Business Machines Corporation Ribbon feed system for a matrix printer

Also Published As

Publication number Publication date
IT993963B (it) 1975-09-30
FR2201651A5 (enrdf_load_stackoverflow) 1974-04-26
DE2248318A1 (de) 1974-04-11
CH551284A (de) 1974-07-15
NL158741B (nl) 1978-12-15
SE383292B (sv) 1976-03-08
ATA817773A (de) 1976-10-15
GB1382930A (en) 1975-02-05
SE7313331L (enrdf_load_stackoverflow) 1974-04-03
JPS4974048A (enrdf_load_stackoverflow) 1974-07-17
AT337471B (de) 1977-07-11
NL7313479A (enrdf_load_stackoverflow) 1974-04-04

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