US3644930A - Multistylus recorder - Google Patents

Multistylus recorder Download PDF

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Publication number
US3644930A
US3644930A US829638A US3644930DA US3644930A US 3644930 A US3644930 A US 3644930A US 829638 A US829638 A US 829638A US 3644930D A US3644930D A US 3644930DA US 3644930 A US3644930 A US 3644930A
Authority
US
United States
Prior art keywords
recording medium
recording
panel
recorder
zone
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
US829638A
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English (en)
Inventor
Klaus K Stange
Thomas K Robinson Jr
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.)
Xerox Corp
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Xerox Corp
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Filing date
Publication date
Application filed by Xerox Corp filed Critical Xerox Corp
Application granted granted Critical
Publication of US3644930A publication Critical patent/US3644930A/en
Anticipated expiration legal-status Critical
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
    • B41J2/41—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
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
    • G03G21/1642—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements for connecting the different parts of the apparatus
    • G03G21/1647—Mechanical connection means
    • 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
    • Y10S101/00—Printing
    • Y10S101/37—Printing employing electrostatic force

Definitions

  • ABSTRACT A multistylus electrographic recorder including a housing with a hinged top panel which supports the recording medium path defining structures and a viewing window as well as the medium supply and the manual/automatic driving assembly therefor. This latter assembly operates automatically with the top panel closed and is manually operable with the top panel I in a loading position. Recording, developing and fusing apparatus are also disclosed.
  • Another object of the present invention is to provide an improved recorder having a simplified recording medium path facilitating low cost use and ease of threading.
  • FIG. 1 is a side view of the present invention with some parts removed for clarity;
  • HO. 2 is an exploded view of the drive system for the present invention.
  • FIG. 3 is a perspective view of the recording components of the present invention.
  • HO. 1 depicts a side view of the present invention with a side panel and some of the drive mechanism removed for purposes of clarity.
  • the recorder is housed in a suitable housing comprising a back panel 2, bottom panel 4, and a front panel 6 which may be integral with the bottom panel 4.
  • Two side panels are also included, one of which is illustrated and designated by the reference numeral 8.
  • Back panel 2 has attached to its upper edge a hinge pin 10 which supports for rotation about one edge a top panel 12 which will be described in more detail hereinafter.
  • acompartment panel 14 which serves to segregate the roll of recording medium 16 mounted for rotation on an idler shaft 18 from the remaining parts of the recorder.
  • This idler shaft 18 is connected to top panel 12 by flange l9 integral with the top panel.
  • a drag arm 20 is also supported by the hinge pin 10 and is spring biased so as to exert a constant drag on the recording medium roll 16 regardless of the amount of recording material remaining on shaft 18. ln this way, any momentum of therecording medium roll will not permit slack to develop after the pulling force on the roll has ceased. 1
  • the recording medium moves through its path in the present invention, it passes successively through a recording zone, a development zone, a fusing/viewing zone, and finally an access zone.
  • the recording medium leaves roll 16 at the top and passes over an extension 22 of the compartment panel 14 and across a backing electrode 24.
  • This extension defines one side ofthe recording zone.
  • discrete electrostatic charges are placed on the recording medium in patterns conforming to informational data. This is accomplished by the energization of recording styli with suitable. electrical signals as the styli traverse the recording medium in contact therewith.
  • the styli are supported on a styli card which is fixed to an insulative body 42.
  • a plurality of these bodies are fixed to a dielectric belt 44 which, as will be described in more detail hereinafter, is driven in a cyclic manner to move the styli through the recording zone in a direction substantially perpendicular to the movement of the recording medium.
  • a spring brush 38 also fixed to body 44.
  • Each of these brushes are engageable with a commutator bar mounted on one side of a dielectric member 46 to form a commutator assembly as will be described in more detail hereinafter in connection with FIG. 3. Electrical signals provided to these commutator bars pass to the styli via the spring brushes electrically connected therewith during a recording cycle.
  • a resilient seal 62 preferably made of a silicon rubber, which marks the end of the recording zone and the beginning of the development zone.
  • the latent electrostatic charge pattern is rendered visible by bringing into contact with the recording medium electroscopic marking particles commonly referred to as toner, which are attracted thereto in configuration with the charge patterns.
  • the actual development may be carried out in many conventional ways. Illustrated as an example is the use of a natural fur brush 50 of cylindrical cross section mounted for rotation with shaft 52 in the direction of the arrow, i.e., against the movement of the recording medium. As the brush 50 rotates, it brushes the medium supported by member 26 as well as contacts a donor roller 54 which is fixed on shaft 56 for rotation opposite to that of the developing brush 50.
  • the donor roll may also take many forms and is illustrated as a metal roller which may be coated with a suitable triboelectric material. The donor roller may be partially immersed in a developer mixture which is held in a sump defined by member 58 which is supported by the side panels by way of tie bar 49.
  • a hood 60 extends from the egress of the development zone to the donor roller to confine any cloud of developer mixture to the development zone. This same role is played by seal 62 mounted on the edgeof member 58 at the entrance to the development zone since stray particles in the recording zone could interfere with the performance of the moving parts as well as disrupt proper electrical contact between the brushes 38 and the commutator bars.
  • Stray marking particles escaping from the exit of the development zone could cloud the viewing window 64 which forms part of the fusing/viewing zone.
  • the electroscopic marking particles which have made visible the recorded electrostatic patterns are permanently fixed on or fused with the recording medium by the application of a suitable amount of heat.
  • the source of this heat is a resistance element 27 imbedded in a platen 28 across which the toner-laden medium is pulled.
  • Window 64 is mounted on the top panel 12 by a flanged member 66.
  • an operator symbolized by the eye 68, may view the recording through the window 64 with the illumination provided by lamp 70 mounted in a reflector 72 supported by the side panels via tie bar 73.
  • the recording medium is ultimately pulled through its path by means of a driven roller 30 mounted on shaft 32 and a spring-loaded pinch roller 33 mounted on shaft 34.
  • Shafts'32 and 34 are each supported for rotation by the top panel 12.
  • Shaft 32 also has fixed at one end thereof a thumb wheel 74 which is depicted in the phantom portion of FIG. 1 for purposes of clarity.
  • the recording medium now bearing pennanent visible information passes-a tear bar 76 the edge of which defines the beginning of the access zone.
  • This zone is further defined by the inclined depression in the top panel 12 which forms an opening therein for passage of the recording medium.
  • the recorded information is physically accessible and may be torn off with the help of the tear bar 76.
  • um roll, pinch roller-driven roller assembly including rollers 30 and 33, backing electrode 24 and developer support 26 along with window 64 and member 66 are all moved with the top panel 12 when the panel is moved to its phantom position.
  • thumb wheel 74 In addition to the elements already alluded to as being moved in fixed relation with the top panel 12 there is an additional item, thumb wheel 74.
  • this wheel may be made of a suitable plastic material having a serrated edge or periphery to permit a person to easily rotate it with contact by his thumb or other finger.
  • the shaft 32 on which the wheel is mounted is positioned inside the recorder housing when the top panel is down in such a manner so the wheel 74 protrudes as shown in the phantom view slightly above the respective portion of the top panel 12 to permit access thereto by operator. Since the thumb wheel 74 is mounted on the same shaft 32 as is drive roller 30 for therecording medium manual movement of the recording media by an operator is possible.
  • box 78 in the lower lefthand corner of the housing of FIG. 1 which may include suitable electronics for generating electrical signals which would be conveyed to the commutator bars for the recording of alphanumeric information on the recording medium.
  • the source of all driving power in the apparatus is generated from motor 80 having a shaft 81 which transmits motive power to an endless drivebelt 82 entrained about roller 83, idler roller 84 and roller 85.
  • Roller 85 is fixed to and rotates with main drive shaft 52 having one end fixed to the developing brush 50.
  • the other end of the main drive shaft 52 is fixed to drive gear 86 which cooperates with an intermediate gear 87 to drive gear 88.
  • These three gears cooperate to reduce the drive speed on shaft 90 fixed to gear 88 and gear 91.
  • Gear 92 cooperates with gear 92 to translate this drive force thereto.
  • Gear 92 then acts to drive shaft 56 which translates this driving force to the donor roll 54.
  • shaft 56 is also coupled to roller 93 which drives endless belt 94 entrained thereabout and about idler rollers 95 and 96.
  • Belt 94 is in driving relationship-with the thumb wheel 74 mounted on shaft 32 to drive drive roller 30 of the pinch roller assembly previously alluded to in connection with the description of FIG. 1. As the drive belt 94 is driven the thumb wheel acts as a driven roller to feed paper through the pinch roll assembly from the recording medium roll 16.
  • thumb wheel 74 engages drivebelt 94 for automatic drive.
  • Shaft 98 is fixed to and rotates with roller 83 and has one end coupled to helical gear 100.
  • this helical gear 100 cooperates with helical gear 102 to drive shaft 104 which is coupled via a conventional wrap spring clutch 106 to a sprocket wheel which is best seen in FIG. 3.
  • shaft 104 is fixed to a sprocket wheel to drive endless belt 44 previously alluded to in connection with FIG. 1.
  • the recording styli card 40 is shown mounted on body 42 which is in turn adhered to the outer surface of belt 44 and is associated with two slots 108 which permit the body 42 to easily maneuver the bend'in the path of belt 44 as it is driven about the two sprockets wheels 105 and 110. Also associated with body 42 are a plurality of spring brushes 38 equal in number to the number of styli on card 40 which are in electrical contact during a recording cycle with commutator bars 112 embedded in the under side of a dielectric member 114. These commutator bars and member 114 make up the commutator assembly 46 previously referred to in connection with FIG 1.
  • Shaft 104 associated with sprocket wheel 105 and shaft 116 associated with sprocket wheel are each fixed to a sprocketless wheel shown through the portion of belt 44 broken away and given the reference numeral 118. Both shafts 104 and 116 are mounted in bearings fixed to flange support member 120 as shown in FIG. 1 which in turn is connected to the side panels in a rigid manner by way of tie bar 122.
  • motor 80 When the recorder of the present invention is in operation, motor 80 is energized and clutch 106 is engaged to translate motive power from shaft 104 to sprocket drive wheel 105 to move belt 44 through its path. In so doing, the recording stylus 44 mounted on body 42 are caused to be moved across the recording zone associated with backing electrode 24 to contact recording medium 16 driven thereacross. During this traversal of the recording medium by the styli, electrical signals conventionally provided by suitable electronics in box 78 are supplied via the commutator bars 112, and the spring brushes 38 to the appropriate styli connectedthereto.
  • the recording information bearing medium is moved past seal 62, which does not effect the recorded charges, to the development zone where the recording is rendered visible.
  • the platen 28 and the backing'electrode 24 are substantially parallel and connected physically by the support member 26. This configuration assists the pinch roll assembly in maintaining the toner-laden recording medium taut and in good contact with platen 28 for efficient fusing.
  • the recording medium portion bearing the fused image then passes the pinch roll assembly to the opening in the top panel 12 where it may be retrieved by tearing it from the remaining recording medium.
  • a housing including a panel movable between recorder operating and servicing positions;
  • a pinch roll assembly including driven and idler rollers the latter being biased against the former, said pinch roll assembly being mounted to said panel' and movable therewith;
  • An information recorder according to claim 2 wherein said drive means comprises a belt and said manually actuatable means comprises a wheel.
  • a multistylus information recorder comprising:
  • a housing including a panel movable between recorder operating and recording servicing positions;
  • a recording zone including a recording head bearing a linear array of styli fixed to a drive member adapted to move said styli across a recording medium at said recording zone between said styli and a backing member and means for supplying recording signals to said styli during movement thereof to effect the deposition of electrostatic charges on said medium; shaft mounted on said panel for supporting a supply of recording medium; 7 development zone including a development support member and means for depositing electrostatic marking particles on a recording medium to render electrostatic charges thereon visible;
  • a fusing station including platen means for fixing electroscopic marking particles to a recording medium in contact with a surface thereof in said fusing zone;
  • a pinch roll assembly including a driven roller and an idler roller spring loaded against the driven roller, said assembly being adapted to pull successive portions of a recording medium from said shaft to said stations in the I order recited hereinabove;
  • said backing and said support members, said platen means, said pinch roll assembly and said manually actuatable means being mounted to said panel and movable therewith.
  • a recorder as defined in claim 5 further including:
  • a recorder as defined in claim 5 further including means for isolating the recording zone from the development zone having a nonconductive seal positioned to be in pressure contact against said recording medium as it moves from the recording zone to the development zone, said seal extending across the entire width of said recording medium in a direction transverse to the direction of movement thereof.
  • a recorder as defined in claim 9 further including:
  • drive means coupled to said source and engageable with said wheel when said panel is in said operating position for coupling said motive power to said driven roller and disengaged therefrom whey in the servicing position.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electronic Switches (AREA)
  • Recording Measured Values (AREA)
  • Printing Methods (AREA)
  • Combination Of More Than One Step In Electrophotography (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Electrophotography Using Other Than Carlson'S Method (AREA)
  • Fax Reproducing Arrangements (AREA)
  • Time Recorders, Dirve Recorders, Access Control (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
US829638A 1969-06-02 1969-06-02 Multistylus recorder Expired - Lifetime US3644930A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US82963869A 1969-06-02 1969-06-02

Publications (1)

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US3644930A true US3644930A (en) 1972-02-22

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ID=25255089

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Application Number Title Priority Date Filing Date
US829638A Expired - Lifetime US3644930A (en) 1969-06-02 1969-06-02 Multistylus recorder

Country Status (11)

Country Link
US (1) US3644930A (xx)
JP (1) JPS4911766B1 (xx)
BE (1) BE751150A (xx)
BR (1) BR7017361D0 (xx)
CA (1) CA944812A (xx)
DE (1) DE2026792A1 (xx)
ES (1) ES380273A1 (xx)
FR (1) FR2052451A5 (xx)
GB (1) GB1297110A (xx)
NL (1) NL7007785A (xx)
SE (1) SE368289B (xx)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3757352A (en) * 1970-03-11 1973-09-04 Eg & G Inc Digitally pulsed dielectric line scan recorder
US3786515A (en) * 1972-06-19 1974-01-15 Horizons Inc Latent image recording method and electric recording apparatus
US3947190A (en) * 1973-03-15 1976-03-30 Hitachi, Ltd. Electrophotographic apparatus for recording images in superimposed relationship
US3971042A (en) * 1970-02-25 1976-07-20 Xerox Corporation Writing apparatus having wear resistant material
FR2324033A1 (fr) * 1975-09-12 1977-04-08 Versatec Dispositif du type enregistreur/traceur montable dans un espace tres reduit et procede de fabrication d'un tel dispositif
US4079826A (en) * 1974-06-11 1978-03-21 Digital Computer Controls, Inc. Paper tape housing for a business machine
US4240084A (en) * 1979-09-28 1980-12-16 Xerox Corporation Electrographic recorder with writing, developing and driving assembly
US4240085A (en) * 1979-09-28 1980-12-16 Xerox Corporation Electrographic recorder
FR2477074A1 (fr) * 1980-02-28 1981-09-04 Sagem Imprimante agencable pour l'emploi d'un support d'impression choisi parmi une pluralite de supports de types differents
US4408210A (en) * 1981-08-12 1983-10-04 Wang Laboratories, Inc. Paper feed and fusing assembly for magnetographic printing apparatus
US4995746A (en) * 1988-03-10 1991-02-26 U.S. Philips Corporation Office machine
US5219236A (en) * 1988-03-11 1993-06-15 Brother Kogyo Kabushiki Kaisha Recording apparatus capable of recording information on both a continuous recording medium and a cut-sheet recording medium
US5296879A (en) * 1990-07-09 1994-03-22 Brother Kogyo Kabushiki Kaisha Image recording apparatus having detachable cartridge
US5355160A (en) * 1984-05-19 1994-10-11 Canon Kabushiki Kaisha Recorder having separate recording means and feeding means housings
US20090272838A1 (en) * 2008-04-30 2009-11-05 Ricoh Company, Limited Roll-sheet feeding device and image forming apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2610936C3 (de) * 1976-03-16 1980-07-24 Robert Bosch Gmbh, 7000 Stuttgart Schreibvorrichtung zur zeilenweisen Wiedergabe der Anzeige eines elektronischen Taschenrechners o.dgl. elektronischen Kleingerätes

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3971042A (en) * 1970-02-25 1976-07-20 Xerox Corporation Writing apparatus having wear resistant material
US3757352A (en) * 1970-03-11 1973-09-04 Eg & G Inc Digitally pulsed dielectric line scan recorder
US3786515A (en) * 1972-06-19 1974-01-15 Horizons Inc Latent image recording method and electric recording apparatus
US3947190A (en) * 1973-03-15 1976-03-30 Hitachi, Ltd. Electrophotographic apparatus for recording images in superimposed relationship
US4079826A (en) * 1974-06-11 1978-03-21 Digital Computer Controls, Inc. Paper tape housing for a business machine
FR2324033A1 (fr) * 1975-09-12 1977-04-08 Versatec Dispositif du type enregistreur/traceur montable dans un espace tres reduit et procede de fabrication d'un tel dispositif
US4042939A (en) * 1975-09-12 1977-08-16 Xerox Corporation Printer/plotter style system for confined installation and method
US4240085A (en) * 1979-09-28 1980-12-16 Xerox Corporation Electrographic recorder
US4240084A (en) * 1979-09-28 1980-12-16 Xerox Corporation Electrographic recorder with writing, developing and driving assembly
FR2477074A1 (fr) * 1980-02-28 1981-09-04 Sagem Imprimante agencable pour l'emploi d'un support d'impression choisi parmi une pluralite de supports de types differents
US4408210A (en) * 1981-08-12 1983-10-04 Wang Laboratories, Inc. Paper feed and fusing assembly for magnetographic printing apparatus
US5355160A (en) * 1984-05-19 1994-10-11 Canon Kabushiki Kaisha Recorder having separate recording means and feeding means housings
US4995746A (en) * 1988-03-10 1991-02-26 U.S. Philips Corporation Office machine
US5219236A (en) * 1988-03-11 1993-06-15 Brother Kogyo Kabushiki Kaisha Recording apparatus capable of recording information on both a continuous recording medium and a cut-sheet recording medium
US5296879A (en) * 1990-07-09 1994-03-22 Brother Kogyo Kabushiki Kaisha Image recording apparatus having detachable cartridge
US20090272838A1 (en) * 2008-04-30 2009-11-05 Ricoh Company, Limited Roll-sheet feeding device and image forming apparatus
US8191816B2 (en) * 2008-04-30 2012-06-05 Ricoh Company, Limited Roll-sheet feeding device and image forming apparatus

Also Published As

Publication number Publication date
DE2026792A1 (de) 1970-12-17
CA944812A (en) 1974-04-02
BR7017361D0 (pt) 1973-01-25
SE368289B (xx) 1974-06-24
FR2052451A5 (xx) 1971-04-09
GB1297110A (xx) 1972-11-22
JPS4911766B1 (xx) 1974-03-19
ES380273A1 (es) 1972-09-01
NL7007785A (xx) 1970-12-04
BE751150A (fr) 1970-11-30

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