EP0014948A1 - Dispositif et procédé d'impression permettant d'obtenir un espacement de caractères régulier - Google Patents

Dispositif et procédé d'impression permettant d'obtenir un espacement de caractères régulier Download PDF

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Publication number
EP0014948A1
EP0014948A1 EP80100714A EP80100714A EP0014948A1 EP 0014948 A1 EP0014948 A1 EP 0014948A1 EP 80100714 A EP80100714 A EP 80100714A EP 80100714 A EP80100714 A EP 80100714A EP 0014948 A1 EP0014948 A1 EP 0014948A1
Authority
EP
European Patent Office
Prior art keywords
carriage
type
motor
drive
printing unit
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.)
Granted
Application number
EP80100714A
Other languages
German (de)
English (en)
Other versions
EP0014948B1 (fr
Inventor
Heinz Gerjets
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.)
Olympia Werke AG
Original Assignee
Olympia Werke AG
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 Olympia Werke AG filed Critical Olympia Werke AG
Publication of EP0014948A1 publication Critical patent/EP0014948A1/fr
Application granted granted Critical
Publication of EP0014948B1 publication Critical patent/EP0014948B1/fr
Expired 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
    • B41J1/00—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies
    • B41J1/22—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on carriers rotatable for selection
    • B41J1/24—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on carriers rotatable for selection the plane of the type or die face being perpendicular to the axis of rotation
    • 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
    • B41J19/00—Character- or line-spacing mechanisms
    • B41J19/18—Character-spacing or back-spacing mechanisms; Carriage return or release devices therefor
    • B41J19/20—Positive-feed character-spacing mechanisms
    • B41J19/202—Drive control means for carriage movement
    • 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
    • Y10S400/00—Typewriting machines
    • Y10S400/903—Stepping-motor drive for carriage feed

Definitions

  • the invention relates to a printing unit for producing a typeface with uniform character spacing for typewriters or similar office machines of the type specified in the preamble of patent claim 1.
  • the prior art also discloses arrangements with servo or stepper motor drives in which the type carrier moves from a set position to a desired position both in one and in the other direction of rotation is adjustable. In order to reach the desired position for the type holder as quickly as possible, it is advisable to choose the shortest adjustment path.
  • These reversible drives for setting the type carriers have the disadvantage that the positioning accuracy has a large hysteresis due to the setting from different directions. The positioning accuracy is also very much influenced by the angle of rotation that the type holder has to go through when setting from an old to a new setting position.
  • a possibly existing centering device must therefore be able to align the type carrier within the large hysteresis, which is associated with time and great effort. In the case of printing units without a centering device, the large hysteresis means that a clean typeface with evenly spaced characters cannot be achieved.
  • the invention has for its object to provide a printing unit for typewriters or similar office machines with which a clean typeface with always uniform character spacing is generated even in printing units without a centering device for the sum type carrier.
  • the hysteresis for the positioning accuracy should be as small as possible, even in the case of printing units in which the type carrier is set with the shortest rotation path from different directions.
  • the printing unit according to the invention enables a typeface with uniform character spacing, since the type holder always executes a vocational step movement in the same direction and with the same increment after his setting process. This creates the same stop conditions.
  • the subject matter of claim 2 enables easy control.
  • control device can consist in a known manner of a control element with ring counters, a bit pattern generator, etc.
  • FIG. 1 shows a top view of a type wheel printer 1 according to the invention, between the side walls 3, 5 of which a carriage 13 is mounted so as to be longitudinally displaceable on axes 9, (11).
  • the carriage 13 has a base plate 7 which has a type wheel drive arrangement 15 shown in FIG. 1 and a type stop device with a pressure hammer 17 and an electromagnet 19.
  • On the base plate 7 there is also an ink ribbon cassette 21 with an ink ribbon 22 which is guided by means of the guides 23 and 25 between the recording medium 27 and the rotatably mounted type wheel 29.
  • the record carrier 27 can be driven in a known manner via a paper roller 31, which can be driven via a motor (not shown).
  • two drive gears 33, 35 are rotatably mounted, which cooperate in a form-fitting manner with a toothed belt 37 fixedly connected to the slide 13.
  • the gear 35 is via a motor, for. B. driven by a stepper motor 39 in both step directions 41.
  • the total type carrier consists of the type disk 29, which has a plurality of elastic type lamellae, at the free ends of which the types are arranged.
  • the type plate 29 is a motor that can be operated in start-stop operation, e.g. B. stepper motor 43 gradually adjustable.
  • an optical coding disk 47 is fastened, which interacts with a light source 49 and a plurality of light-sensitive elements 53 arranged in the housing 51.
  • coded signals 57 corresponding to the characters to be printed are sent from a keyboard 55 to a control element 59, which can be a microprocessor or a commercially available computer.
  • the control element 59 receives the data, carries out certain calculations and sends drive pulses to the slide stepper motor 39 via amplifiers 61 and 63 and to the type wheel stepping motor 43. If the carriage stepping motor 39 has been subjected to twelve drive pulses in half-step operation, then the carriage 13 has moved by one printing position at a 1/12 inch pitch.
  • the type wheel stepper motor 43 requires four drive pulses to move the type plate by one character.
  • the electromagnet 19 for the hammer 17 also receives drive pulses from the control element 59 via an amplifier 65.
  • the type wheel stepper motor 43 can be controlled via the control element 59 serving as a control device in such a way that after the setting process of the type carrier 29 on the character to be printed, one or more drive pulses and then an equal number of reset pulses to the characters Type wheel stepper motor 43 are delivered in such a way that the type carrier 29 always executes a U step movement in the same direction and with the same step size according to FIG. 4 immediately before the selected character is printed by the hammer 17. If the type plate 29 z. B. from an old to a new setting position according to arrow direction 67 in FIG. 4 in the impression position, the type plate performs a mit step movement first in arrow direction 69 and then in arrow direction 71.
  • the type plate If the type plate is brought into the impression position in the direction of arrow 73, the type plate then executes the same vocational step movement in the arrow directions 75 and 77.
  • the vocational movements of the type holder always result in the same stopping conditions, since the type plate is brought into the impression point in the same direction and with the same step size immediately before the impression process. For this reason, a clean typeface with uniform spacing is guaranteed.
  • the hysteresis of the posi tioning accuracy is so small even with a setting of the type plate 29 from the different directions 67 and 73 that any remaining positioning that may be required can be carried out with little effort by a centering device.
  • the individual parts for such a centering device can be made light, which also has a favorable effect on the centering speed.
  • the carriage 13 In order to correct a character that has been mistakenly reproduced by hitting it again with the interposition of an adhesive tape, it is necessary that the carriage always occupies the same position if a complete lift is to take place. An exact positioning of the carriage 13 is of course also necessary if the individual characters are to be evenly spaced. If a correction process is required, the carriage 13 is first z. by pressing a backspace key in the keyboard 55 by means of the slide drive motor 39 in the opposite direction to the writing direction until one switching step away from the correction position.
  • the correction key 81 in the keyboard 55 is then actuated, as a result of which the control element 59 outputs a number of "n” reset pulses and then a number of "n-1" feed pulses to the slide step motor 39 in such a way that the slide 13 makes a mit step movement before each deletion process according to FIG. 5 always in the same direction and with the same step size.
  • the carriage 13 is first brought into the position 83 according to FIG. 5, which is a reset step from the correction position (impression position). After actuation of the correction key, the carriage 13 is moved out of the position 83 in the direction of arrow 85 beyond the correction position and then moved into the correction position 87 in the direction of arrow 89 by "n-1" feed pulses.
  • the carriage 13 in the same direction with each correction process device and performed with the same step size the same stop condition for the carriage 13 is always created. This enables a complete lifting off of the character erroneously printed from the recording medium 27.
  • the device according to the invention enables a clean typeface with always uniform character spacing.

Landscapes

  • Character Spaces And Line Spaces In Printers (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
EP80100714A 1979-02-17 1980-02-13 Dispositif et procédé d'impression permettant d'obtenir un espacement de caractères régulier Expired EP0014948B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2906135 1979-02-17
DE2906135A DE2906135C2 (de) 1979-02-17 1979-02-17 Druckwerk zur Herstellung eines Schriftbildes mit gleichmäßigen Zeichenabständen

Publications (2)

Publication Number Publication Date
EP0014948A1 true EP0014948A1 (fr) 1980-09-03
EP0014948B1 EP0014948B1 (fr) 1983-06-08

Family

ID=6063173

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80100714A Expired EP0014948B1 (fr) 1979-02-17 1980-02-13 Dispositif et procédé d'impression permettant d'obtenir un espacement de caractères régulier

Country Status (3)

Country Link
US (1) US4311398A (fr)
EP (1) EP0014948B1 (fr)
DE (1) DE2906135C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0122774A2 (fr) * 1983-04-13 1984-10-24 Ing. C. Olivetti & C., S.p.A. Machine à écrire portable électrique
US6374757B1 (en) * 1999-12-02 2002-04-23 Avner Farkash Credit card security device

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2928079A1 (de) * 1979-07-12 1981-01-29 Olympia Werke Ag Schreib- o.ae. bueromaschine mit einer loeschvorrichtung zur korrektur falsch abgedruckter schriftzeichen
DE3014769A1 (de) * 1980-04-17 1981-10-22 Olympia Werke Ag, 2940 Wilhelmshaven Verfahren zur erzeugung von soch teilweise ueberdeckenden schriftzeichen auf einem aufzeichnungstraeger in schreib- o.ae. brueomaschinen
JPS58160181A (ja) * 1982-03-19 1983-09-22 Canon Inc 印字装置
JPS59158280A (ja) * 1983-02-28 1984-09-07 Canon Inc 印字装置
DE3312842C2 (de) * 1983-04-09 1985-12-19 Olympia Werke Ag, 2940 Wilhelmshaven Antriebsvorrichtung für einen entlang eines Aufzeichnungsträgers in Zeilenrichtung bewegbaren Druckwerkswagen in Schreib- oder ähnlichen Büromaschinen
DE3322791A1 (de) * 1983-06-24 1985-01-03 Olympia Werke Ag, 2940 Wilhelmshaven Positioniervorrichtung fuer einen druckwerkswagen in schreib- oder aehnlichen bueromaschinen
GB2154949B (en) * 1984-01-31 1988-04-27 Canon Kk Selective printer
US4758104A (en) * 1984-07-06 1988-07-19 Brother Kogyo Kabushiki Kaisha Printing device
DE3709127A1 (de) * 1986-03-26 1987-10-01 Seiko Epson Corp Automatische papiereinziehvorrichtung fuer drucker
JPS63109599U (fr) * 1986-12-30 1988-07-14
JPS63281875A (ja) * 1987-05-14 1988-11-18 Brother Ind Ltd 印字装置
US4953996A (en) * 1987-10-27 1990-09-04 Pitney Bowes Inc. Printwheel setting device for a postage meter
US10161861B2 (en) * 2016-12-13 2018-12-25 Hong Kong Applied Science and Technology Research Institute Company Limited Compact device for sensing a liquid with energy harvesting from liquid motion

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2026004A1 (de) * 1969-05-23 1970-11-26 Ing. C. Olivetti & C., S.P.A., Ivrea, Turin (Italien) Serien-Druckanordnung für Fernschreiber
GB1219222A (en) * 1969-02-04 1971-01-13 Starkstrom Anlagenbau Veb K Control circuit for machine tools
FR2178161A1 (fr) * 1972-03-30 1973-11-09 Aeg Elotherm Gmbh
FR2212783A5 (fr) * 1972-12-11 1974-07-26 Ibm

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1463045A1 (de) * 1964-06-24 1969-09-18 Citograf Aktiebolag Elektromechanische Steuervorrichtung und mit der Steuervorrichtung ausgeruestete tastenbetaetigte Praegemaschine
FR2142938B1 (fr) * 1970-01-29 1973-07-13 Honeywell Inf Systems
US3861512A (en) * 1972-08-10 1975-01-21 Supreme Equip & Syst Label-making machine
US3834505A (en) * 1972-12-11 1974-09-10 Ibm Ink jet printing apparatus with line sweep and incremental printing facilities
DE2658123C3 (de) * 1976-12-22 1979-06-13 Olympia Werke Ag, 2940 Wilhelmshaven Schreibwerk mit einer Typenscheibe
CA1097582A (fr) * 1978-01-30 1981-03-17 Milburn H. Kane, Iii Traduction non-disponible
DE2831488B2 (de) * 1978-07-18 1980-09-11 Triumph-Werke Nuernberg Ag, 8500 Nuernberg Verfahren zur Steuerung des Korrekturvorganges fur elektronisch gesteuerte Schreibmaschinen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1219222A (en) * 1969-02-04 1971-01-13 Starkstrom Anlagenbau Veb K Control circuit for machine tools
DE2026004A1 (de) * 1969-05-23 1970-11-26 Ing. C. Olivetti & C., S.P.A., Ivrea, Turin (Italien) Serien-Druckanordnung für Fernschreiber
FR2178161A1 (fr) * 1972-03-30 1973-11-09 Aeg Elotherm Gmbh
FR2212783A5 (fr) * 1972-12-11 1974-07-26 Ibm

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0122774A2 (fr) * 1983-04-13 1984-10-24 Ing. C. Olivetti & C., S.p.A. Machine à écrire portable électrique
EP0122774A3 (en) * 1983-04-13 1986-03-05 Ing. C. Olivetti & C., S.P.A. Portable electric typewriter
US6374757B1 (en) * 1999-12-02 2002-04-23 Avner Farkash Credit card security device

Also Published As

Publication number Publication date
EP0014948B1 (fr) 1983-06-08
DE2906135A1 (de) 1980-08-28
US4311398A (en) 1982-01-19
DE2906135C2 (de) 1985-07-11

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