US3739087A - Multi point distributor head for signal recording or the like - Google Patents

Multi point distributor head for signal recording or the like Download PDF

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Publication number
US3739087A
US3739087A US00192386A US3739087DA US3739087A US 3739087 A US3739087 A US 3739087A US 00192386 A US00192386 A US 00192386A US 3739087D A US3739087D A US 3739087DA US 3739087 A US3739087 A US 3739087A
Authority
US
United States
Prior art keywords
stylii
head
conductive members
drum
web
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
US00192386A
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English (en)
Inventor
K Metcalfe
W Lowe
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.)
Commonwealth of Australia Department of Supply
Australian Government
Original Assignee
Australian Government
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 Australian Government filed Critical Australian Government
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Publication of US3739087A publication Critical patent/US3739087A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
    • G03G15/34—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the powder image is formed directly on the recording material, e.g. by using a liquid toner
    • 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
    • B41J2/39—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 using multi-stylus heads
    • 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
    • B41J2/41—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 electrostatic printing
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
    • G03G15/32—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the charge pattern is formed dotwise, e.g. by a thermal head
    • G03G15/321—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the charge pattern is formed dotwise, e.g. by a thermal head by charge transfer onto the recording material in accordance with the image
    • G03G15/325—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the charge pattern is formed dotwise, e.g. by a thermal head by charge transfer onto the recording material in accordance with the image using a stylus or a multi-styli array
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
    • G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
    • G06K15/14—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by electrographic printing, e.g. xerography; by magnetographic printing
    • 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
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/032—Details of scanning heads ; Means for illuminating the original for picture information reproduction
    • 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
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/12—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using the sheet-feed movement or the medium-advance or the drum-rotation movement as the slow scanning component, e.g. arrangements for the main-scanning
    • 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
    • H04N1/29—Reproducing arrangements involving production of an electrostatic intermediate picture

Definitions

  • ABSTRACT The method of signal transfer by multi-point distributor heads using a multiplicity of individually insulated conductive members and applying an electrical signal to the conductive members selectively from one side of the head by means of stylii adapted to impress or receive a signal, the other side of the head being in contact with a web either adapted to receive a signal or containing a signal.
  • a facsimile recorder at the other end can reproduce the original, allowing messages to be readily transmitted over wire or by any other means, including illustrations or the like.
  • the object of the present invention is to overcome the difficulties which have existed in the past and to provide a reliable and highly effective form of signal recording by means of a multi-stylii distributor head.
  • the stylii contacted atape or other recording surface to apply a signal to such a recording surface, or to receive a signal from such a surface, which relative movement takes place between the stylii and the tape or member, but such a system, because of pressure applied by the stylii to the recording surface causes unwanted triboelectric markings due to pressure as the recording member moves beneath the stylii. Also effective contact is difficult to obtain.
  • An object of the present invention is to provide a system and apparatus for multiple stylus recording in which defects such as that referred to above will be eliminated.
  • a drum or platten or other member is provided with a series of finely spaced conductive members which can have a spacing similar to the clot formation used in half tone reproduction, although this dimensioning is referred to merely for convenience and the invention is not limited to such proportions.
  • a signal is then applied by means of a plurality of stylii to one side of this drum or platten, or is received by the stylii, and the other side of the drum or platten is either in contact with a signal-receptive or signalimparting paper or film or is provided with inking or developing means such that an image produced can be transferred to a suitable medium.
  • a signal can readily be transferred between multiple stylii and these conductive members and will then pass as a localised signal through the member to the other side thereof.
  • Transfer through such a medium can be better effected so that the conductive dot formation of the unit, which is in contact with the multiple point signal producing system, utilizes dots the spacing of which can be regular or random or can correspond for instance to the dots of a half tone reproduction, but any signal applied to a particular dot will pass through that conductive dot and will be exactly placed on the sheet or film on which the signal is reproduced, irrespective of whether there is a degree of roughness in this surface because firstly it would be possible to exert considerable pressure between the paper or film and the like and the medium which has the conductive dots or members in it, such for instance as by forming the one member as a cylinder of insulating material with the conductive dots through it, and this could be in contact with a further drum between which two drums the paper or film passes 'with the application of the necessary pressure.
  • the drum or platten with the conductive members in it could'actually pass through a developing bath so that as each of the conductive member has a charge applied to it, it will hold this charge because of the fact that the member is insulated from the surrounding members by being embedded in the insulator and therefore the outer side of this conductive member will attract developer and will hold it and carry it to a transfer locality such as where a sheet of paper or the like presses against this drum or medium and lifts the dots of developer from the drum and transfers them to the paper or the like.
  • the received signal is applied by means of a multiplicity of stylii to a series of individual conductive members embedded in an insulating drum or platten, thus localising the signal in these conductive members, from which the signal is then transferred to the receiving element either by utilizing an element having a photoconductive surface or an insulating surface or a surface which can be dielectrically modified, but which can subsequently be developed, or can have developer applied to the drum or platten which developer is then transferred to the receiving surface.
  • a transmitter can have a similarly formed scanning drum.
  • FIG. 1 is a perspective view of a drum used as a reproducer according to one system as defined in this invention, in which the drum has a series of conductive members extending through it which are contacted on the inside of the drum by stylii, the drum being in contact with a tape onto which the signal or image is to be transferred and being held in contact with the drum by a pressure roller.
  • FIG. 2 is an enlarged fragmentary section of the drum showing the relative position of the stylii.
  • FIG. 3 shows two forms of conductive members which can be used in the drum.
  • FIG. 4 shows a drum similar to that used in the device of FIG. 1 but illustrates how the conductive members can pick up developer and transfer them to a web or tape with the aid of a pressure roller,
  • FIG. 5 demonstrates schematically how the conductive members can be electrostatically deposited on a surface and fixed to the surface to provide the assembly of conductive members which can then be machined and further treated to produce the final drum, and
  • FIG. 6 shows a platten-type head in which the stylii move over the head.
  • a drum 1 is provided with a shaft 2 which can be supported in any suitable bearings.
  • the drum is formed of an insulating medium which is indicated by the numeral 3, and has embedded in it a multiplicity of conductive members, which can finish flush with the outer surface 5 of the drum 1 as shown in A of FIG. 3 but preferably project from the inner surface 6 of the drum so that they can be physically contacted by the stylii 7 which are supported in a row on a manifold 8 passing through the drum 1, the individual stylii 7 being insulated from each other and connected to leads not shown which leave the distributor box and have the necessary signals applied thereto.
  • the conductive members do not extend to the surface 5. In this case the stylii transfer signals through the head but without continuous contact between the stylii and means on the other side of the head to which the signal is applied.
  • the outer surface of the drum 1 is in contact with the web 11 which is in this case is in the form of a tape and which may have its one surface photoconductive so that the photoconductive surface is in contact with the drum 1, or the web may be formed on an insulating medium capable of receiving a charge and holding it.
  • the web 11 is pressed to the drum 1 by a pressure roller 12 which maintains rolling contact between the drum 1 and the web 11 so that there is no sliding contact which could give rise to defects caused through triboelectric effects.
  • a reverse effect could also be obtained by using a modified image such as an image developed by a conductive devloper on a web of suitable material in that when contact is made with the conductive or non conductive section of the web by the conductive members, current flow can be instituted to the stylii in accordance with this effect.
  • the device then acts as a reader of information to be transmitted.
  • the stylii of which are coupled together by intermediate wiring, or transmission means a pattern on a web which influences the flow of current between the pressure roller 12 and the stylii 7, can be transmitted to a remote locality where a similar device, but operating in reverse, transfers the exact pattern to the web 11 at the area, which web can then have the pattern developed in any suitable manner to give a facsimile of the original transmitting web.
  • the drum is again provided with a shaft 21 so that it can be rotated and this drum has conductive members positioned through it in the same way as that described with the first embodiment, but in this case the drum 20 is in contact with a web 22 which is urged on to the drum 20 by the pressure roller 23, but it will be noted that the stylii 24 are now remote from the position at which the pressure roller 23 is located, and the drum 20 dips into developer 25 in a bath 26 so that as signals are transmitted from the manifold 27 to the stylii 24 it will cause a pattern to be formed on the drum of developer 25 corresponding to the impulse as applied to the respective stylii, the pattern so produced in the form of dots of developer being indicated by 28.
  • a signal receiver 29 is indicated which connects with the stylii 24 and the bath 26.
  • a drum with conductive members through it at required intervals can be formed in many ways, but a convenient method is illustrated in FIG. 5 where a hopper 30 carries short lengths of chopped enamelled wire 31, the lengths of enamelled wire being allowed to move from the hopper 30 on to the periphery of an adhesively coated mandrel 32, the chopped wires being orientated in their deposition on to the surface of the mandrel 32 by the application ofa field from the generator 33, which field is applied between the hopper 30 and the drum 34 on which the mandrel 32 is carried, so that the wires are stood on end on the mandrel 32 as it rotates, and the wires can then be permanently bonded together by spraying with a plastic material at the spraying station 35 where a gun 36 is shown.
  • the mandrel When the mandrel has been completely coated it is removed from the drum 34 and the surface of the orientated wires can be machined or otherwise treated after which the matrix formed by the wires and the bonding medium which was injected at the spraying station is removed from the mandrel so that a drum is then formed which after treating, such as machining of both faces, can then serve the purpose of this invention.
  • the conductive members are to project from the drum as on the stylii side as in A and B of FIG. 3, it is a simple matter to use a solvent for the insulating medium to allow the wires to project beyond the surface by removing a required amount of the insulator surface through solution on the face of the insulator. Similarly the wire could be etched to terminate it below the surface 5 as at the bottom of B of FIG. 3.
  • the material applied at the spraying station may not require a high degree of electrical resistivity because the conductive members themselves carry insulation to isolate them electrically from each other.
  • a platen 40 has conductive members 41 through it and it is in contact with a sheet 42.
  • the stylii 43 are carried by a manifold 44 which moves to traverse the stylii over the platen type head.
  • web includes sheets, or flat surfaces of paper, metal insulators or the like and can have photoconductive surfaces or image surfaces.
  • the method of signal transfer by multi-point distributor heads comprising, forming a head of insulating material with a multiplicity of individually insulated conductive members extending therethrough, applying an electrical signal to the said conductive members selectively from one side of the head, receiving the signal on the said conductive members at the other side of the said head, one side of the said head being in contact with stylii to impress or receive a signal and the other side of the said head being in contact with a web either adapted to receive a signal or containing a signal and providing relative motion between said head and stylii to cause the head to be scanned by the stylii which successively contact said conductive members.
  • the head is formed as a rotatable drum having the insulated conductive members projecting through its wall, the conductive members being contacted by stylii on a manifold within the drum, and rotating the drum while pressing the web against the outside of the drum to move the web and drum at the same linear speed.
  • the web is an insulator or photoconductive member which receives elecmembers projecting through its wall, the conductive members being contacted by stylii on a manifold within the drum, rotating the drum, contacting the periphery of the drum with a developer, and transferring the developed signal from the drum to a web.
  • the head is formed as a rotatable drum having the insulated conductive members projecting through its wall, the conductive members being contacted on one side of the platen by stylii on a manifold, moving the manifold and stylii across the platen, and pressing the web against the other side of the platen.
  • a device for receiving or recording signals comprising, a head having a multiplicity of individually insulated conductive members extending therethrough, stylii positioned for contacting said head on one side thereof, means for providing relative movement between said head and said stylii and means to press a web against the other side of said head whereby signals are transmitted between said stylii and said web through said conductive members when relative movement exists between said head and stylii.
  • a device wherein the head is a drum having the conductive members extending through its wall, said stylii contacting the inner surface of said drum, said web contacting the outer surface of said drum.
  • a device wherein the head is a platen having the conductive members extending through it, the said stylii contacting the platten on one side, said web contacting the other side of said platten.
  • the head comprises a wall of insulating material, a multiplicity of said conductive members being set in said wall to extend substantially from one face of the wall to the other, said stylii being supported in a row extending across said head to effect signal exchange between said stylii and said conductive members, said means which effects relative movement between said stylii and said head being constructed to produce such relative movement in a direction substantially at right angles to said row of stylii.
  • a device comprising a wall of insulating material, a plurality of said conductive members being set in said wall to extend from one face of said wall through said other face, said stylii being supported in a row extending across said head on the side thereof where the conductive members extend, whereby said stylii contact said conductive members, said means which effects relative movement between said stylii and said head being constructed to produce such relative movement in a direction substantially at right angles to said row of stylii.
  • the head comprises a wall of insulating material, a plurality of said conductive members being set in said wall to extend from one face to near said other face of said wall,- said stylii being supported in a row and extending across said head, whereby said stylii transfer signals through said head but without continuous contact between said stylii and the means on the other side of said head to which said signal is applied.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
US00192386A 1970-10-26 1971-10-26 Multi point distributor head for signal recording or the like Expired - Lifetime US3739087A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AUPA295670 1970-10-26

Publications (1)

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US3739087A true US3739087A (en) 1973-06-12

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US00192386A Expired - Lifetime US3739087A (en) 1970-10-26 1971-10-26 Multi point distributor head for signal recording or the like

Country Status (5)

Country Link
US (1) US3739087A (enrdf_load_stackoverflow)
BE (1) BE774506A (enrdf_load_stackoverflow)
CA (1) CA937874A (enrdf_load_stackoverflow)
DE (1) DE2154157B2 (enrdf_load_stackoverflow)
NL (1) NL7114694A (enrdf_load_stackoverflow)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4236834A (en) * 1978-09-28 1980-12-02 International Business Machines Corporation Electrothermal printing apparatus
US4335967A (en) * 1981-03-03 1982-06-22 International Business Machines Corporation Electrolytic printing apparatus including preheating pressure pad therefor
US4368669A (en) * 1981-01-02 1983-01-18 Milliken Research Corporation Method and apparatus for non-impact printing on barrier coated substrate
FR2524390A1 (fr) * 1982-04-02 1983-10-07 Cit Alcatel Imprimante electrostatique indirecte
US4441112A (en) * 1982-03-05 1984-04-03 Keller Michael I Non-impact dot matrix printer
EP0191521A1 (en) * 1985-02-06 1986-08-20 Océ-Nederland B.V. Printing device
FR2592836A1 (fr) * 1986-01-16 1987-07-17 Habauzit Gerard Nouvelle structure de tambour d'imprimante sans impact du type electrostatique
EP0235700A1 (en) * 1986-02-20 1987-09-09 ELCORSY, Inc. Monochromic and polychromic printing of an image reproduced by electro-coagulation of a colloid
EP0247699A1 (en) * 1986-05-29 1987-12-02 Océ-Nederland B.V. Image-forming element for an electrostatic printer, and a printer in which an element of this kind is used
EP0462457A3 (en) * 1990-06-18 1992-04-15 Casio Computer Company Limited Electrostatic recording apparatus
EP0667565A3 (en) * 1994-02-14 1996-04-10 Imagine Ltd Device and method for pattern formation on a dielectric substrate.

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2418632C3 (de) * 1974-04-18 1981-10-01 Philips Patentverwaltung Gmbh, 2000 Hamburg Verfahren und Vorrichtung zum elektrostatischen Drucken
DE4022493C2 (de) * 1990-07-14 1994-10-27 Bernhard Prof Dr Ing Hill Elektrophoretischer Drucker mit elektronischer Druckplatte oder -walze

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4236834A (en) * 1978-09-28 1980-12-02 International Business Machines Corporation Electrothermal printing apparatus
US4368669A (en) * 1981-01-02 1983-01-18 Milliken Research Corporation Method and apparatus for non-impact printing on barrier coated substrate
US4335967A (en) * 1981-03-03 1982-06-22 International Business Machines Corporation Electrolytic printing apparatus including preheating pressure pad therefor
US4441112A (en) * 1982-03-05 1984-04-03 Keller Michael I Non-impact dot matrix printer
US4514078A (en) * 1982-04-02 1985-04-30 Compagnie Industrielle Des Telecommunications Cit-Alcatel Indirect electrostatic printer
EP0091074A1 (fr) * 1982-04-02 1983-10-12 Alcatel Imprimante électrostatique indirecte
FR2524390A1 (fr) * 1982-04-02 1983-10-07 Cit Alcatel Imprimante electrostatique indirecte
EP0191521A1 (en) * 1985-02-06 1986-08-20 Océ-Nederland B.V. Printing device
FR2592836A1 (fr) * 1986-01-16 1987-07-17 Habauzit Gerard Nouvelle structure de tambour d'imprimante sans impact du type electrostatique
EP0235700A1 (en) * 1986-02-20 1987-09-09 ELCORSY, Inc. Monochromic and polychromic printing of an image reproduced by electro-coagulation of a colloid
EP0247699A1 (en) * 1986-05-29 1987-12-02 Océ-Nederland B.V. Image-forming element for an electrostatic printer, and a printer in which an element of this kind is used
EP0462457A3 (en) * 1990-06-18 1992-04-15 Casio Computer Company Limited Electrostatic recording apparatus
US5210551A (en) * 1990-06-18 1993-05-11 Casio Computer Co., Ltd. Electrostatic recording apparatus with an electrode drive means within the developer circulating path
EP0667565A3 (en) * 1994-02-14 1996-04-10 Imagine Ltd Device and method for pattern formation on a dielectric substrate.

Also Published As

Publication number Publication date
CA937874A (en) 1973-12-04
DE2154157B2 (de) 1973-10-04
BE774506A (fr) 1972-02-14
DE2154157C3 (enrdf_load_stackoverflow) 1974-05-02
DE2154157A1 (de) 1972-04-27
NL7114694A (enrdf_load_stackoverflow) 1972-04-28

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