EP0038283B1 - Matrixdrucker mit einem zur Druckspalteinstellung anstellbaren Druckkopf - Google Patents

Matrixdrucker mit einem zur Druckspalteinstellung anstellbaren Druckkopf Download PDF

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Publication number
EP0038283B1
EP0038283B1 EP81730020A EP81730020A EP0038283B1 EP 0038283 B1 EP0038283 B1 EP 0038283B1 EP 81730020 A EP81730020 A EP 81730020A EP 81730020 A EP81730020 A EP 81730020A EP 0038283 B1 EP0038283 B1 EP 0038283B1
Authority
EP
European Patent Office
Prior art keywords
insert frame
printing
matrix
press
frame
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
Application number
EP81730020A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0038283A1 (de
Inventor
Günter Gomoll
Wolfgang Hendrisck
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.)
Vodafone GmbH
Original Assignee
Mannesmann 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 Mannesmann AG filed Critical Mannesmann AG
Priority to AT81730020T priority Critical patent/ATE3193T1/de
Publication of EP0038283A1 publication Critical patent/EP0038283A1/de
Application granted granted Critical
Publication of EP0038283B1 publication Critical patent/EP0038283B1/de
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
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/22—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material
    • B41J2/23—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material using print wires
    • B41J2/235—Print head assemblies
    • B41J2/24—Print head assemblies serial printer type
    • 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
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J25/304—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface
    • B41J25/308—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with print gap adjustment mechanisms

Definitions

  • DE-AS 2516 149 discloses a device for keeping the distance between the print head of a matrix printer and the recording medium constant.
  • the print head itself is slidably attached to the print carriage, is under the load of a spring acting between the print head and the slide, and adjusts its distance to the recording medium automatically via a feeler roller.
  • the object of the invention is to provide a matrix printer, in which the printing gap can be predetermined and varied within predetermined ranges, without an automatic printing gap setting. This task has arisen from the requirement to create a structurally simple, inexpensive printer suitable for large series production.
  • the object is achieved in a technically advanced manner by the invention in that the mobility required for positioning the printhead is placed in the displaceable insert frame and a rigid connection between the printhead and the carriage can thereby be established.
  • This is a significant advantage in terms of production and manufacturing costs, because movement mechanisms on a moving part, while simultaneously fulfilling precise guidance of the moving parts, are very complex. This also reduces the mass of the moving parts, which can also reduce the drive power for the print head.
  • Claim 2 shows that the pressure can be adjusted in a simple manner via eccentrics. If these eccentrics are non-rotatably connected to the guide rod, a simple rotation of the guide rod is sufficient to set a desired pressure gap.
  • the insert frame with all units to be attached to it can be manufactured separately, regardless of the parts permanently installed in the printer housing.
  • a simple form-fitting plug-in coupling is sufficient, which allows their coupling parts to be axially displaced from one another.
  • the matrix printer shown in Fig. 1 has a print head 1 which is fixed immovably on a carriage 2. At the front end of the carriage 2, a cylindrical guide sleeve 3 is attached and attached to a guide rod 4. The guide rod 4 is arranged parallel to a platen 7 in the form of a friction roller. At both ends of the guide rod 4 there are eccentrics 5 and 6 which, under the action of a spring 23 (see FIG. 2), rest on corresponding parts of the printer housing 8.
  • the guide rod 4 is held in an insert frame 9.
  • a timing disk 12 is connected to the motor shaft of the main drive motor 11, which uses a light barrier 28 to determine the respective position of the print carriage 2 and thus the respective position Print position of the print head 1 reports a control, not shown.
  • the drive system also includes a power take-off motor 13, which drives a shaft 16 with a worm gear 15 in one direction of rotation via a gear 26 and freewheels, not further described, and drives a drive shaft 14 of the ink ribbon system via this, and a line switching device 17 in another direction of rotation. Furthermore, a lancing freewheel 22 is provided for rotating the counterpart 7.
  • the ribbon cassette includes an ink ribbon 21, which is drawn in a short section.
  • the axis of the print head 1 is designated by a dash-dotted line 24.
  • Fig. 2 shows the eccentric 5 which bears against the printer housing 8 under the action of the spring 23 and which here is to be connected in a rotationally fixed manner to the guide rod 4.
  • a screw 26 is provided to fix the eccentric position.
  • a slideway 27 of the printer housing 28 is indicated, on which the insert frame 9 rests.

Landscapes

  • Common Mechanisms (AREA)
  • Impact Printers (AREA)
EP81730020A 1980-04-15 1981-02-19 Matrixdrucker mit einem zur Druckspalteinstellung anstellbaren Druckkopf Expired EP0038283B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81730020T ATE3193T1 (de) 1980-04-15 1981-02-19 Matrixdrucker mit einem zur druckspalteinstellung anstellbaren druckkopf.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3014823A DE3014823C2 (de) 1980-04-15 1980-04-15 Matrixdrucker mit einem zur Druckspalteinstellung anstellbaren Druckkopf
DE3014823 1980-04-15

Publications (2)

Publication Number Publication Date
EP0038283A1 EP0038283A1 (de) 1981-10-21
EP0038283B1 true EP0038283B1 (de) 1983-05-04

Family

ID=6100319

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81730020A Expired EP0038283B1 (de) 1980-04-15 1981-02-19 Matrixdrucker mit einem zur Druckspalteinstellung anstellbaren Druckkopf

Country Status (5)

Country Link
US (1) US4609294A (enrdf_load_stackoverflow)
EP (1) EP0038283B1 (enrdf_load_stackoverflow)
JP (1) JPS56166079A (enrdf_load_stackoverflow)
AT (1) ATE3193T1 (enrdf_load_stackoverflow)
DE (1) DE3014823C2 (enrdf_load_stackoverflow)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4738552A (en) * 1985-03-11 1988-04-19 Oki Electric Industry Co., Ltd. Platen gap adjusting mechanism of printer
JPS6273978A (ja) * 1985-09-26 1987-04-04 Brother Ind Ltd 印字装置
DE3608001A1 (de) * 1986-03-11 1987-09-24 Mannesmann Ag Einrichtung zum verstellen des abstandes zwischen druckkopf und schreibwiderlager eines druckers, insbes. eines matrixdruckers
JP3025778B2 (ja) * 1988-04-08 2000-03-27 レックスマーク・インターナショナル・インコーポレーテッド 印刷ヘツドの間隙調節機能付きのプリンタ
US4893950A (en) * 1988-09-28 1990-01-16 Xerox Corporation Apparatus and method for controlling the positioning of marking elements in a serial impact printer
US4990004A (en) * 1988-10-12 1991-02-05 Brother Kogyo Kabushiki Kaisha Printer having head gap adjusting device
DE69309255T2 (de) * 1993-04-28 1997-07-03 Compuprint Spa Punktmatrixdruckkopf und zugehöriges Druckgerät
US6736557B2 (en) 2002-09-05 2004-05-18 Lexmark International, Inc. Printhead gap adjustment mechanism for an imaging apparatus
US6872019B2 (en) * 2003-04-09 2005-03-29 Hewlett-Packard Development Company, L.P. Carriage rod and media support
TW201136774A (en) * 2010-04-20 2011-11-01 Cal Comp Electronics & Comm Co A fixing structure for print head carriage rod
CN108248222B (zh) * 2018-01-09 2019-06-25 天津腾坤博硕科技有限公司 条形码生成器
CN110525062B (zh) * 2019-09-20 2024-03-12 重庆品胜科技有限公司 一种打印头位置自动调节结构及打印机

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2516149B2 (de) * 1975-04-11 1978-04-20 Mannesmann Ag, 4000 Duesseldorf Vorrichtung zum Konstanthalten des Abstandes des Druckkopfes eines Matrixdruckers vom Aufzeichnungsträger

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7140524U (enrdf_load_stackoverflow) * 1900-01-01 Nixdorf Ag
JPS5135889B2 (enrdf_load_stackoverflow) * 1971-11-26 1976-10-05
GB1447926A (en) * 1973-08-30 1976-09-02 Nixdorf Computer Ag Electromecahnical writing devices
JPS585786B2 (ja) * 1973-09-12 1983-02-01 株式会社日立製作所 印字ヘッド組立体の位置調整機構
US4024940A (en) * 1976-04-13 1977-05-24 Mannesmann Aktiengesellschaft Matrix printer having document thickness compensating device
US4063630A (en) * 1976-06-25 1977-12-20 International Business Machines Corporation Typewriter impact position adjustment mechanism
US4218151A (en) * 1976-10-14 1980-08-19 Lrc, Inc. Serial impact calculator printer
US4086997A (en) * 1977-03-07 1978-05-02 Wang Laboratories, Inc. Adjustable support for print head assembly
US4189244A (en) * 1977-11-21 1980-02-19 Data Products Corporation Platen gap adjuster
US4178106A (en) * 1977-11-25 1979-12-11 General Electric Company Print gap adjust mechanism for printers
JPS54100808A (en) * 1978-01-25 1979-08-08 Suwa Seikosha Kk Printer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2516149B2 (de) * 1975-04-11 1978-04-20 Mannesmann Ag, 4000 Duesseldorf Vorrichtung zum Konstanthalten des Abstandes des Druckkopfes eines Matrixdruckers vom Aufzeichnungsträger

Also Published As

Publication number Publication date
JPS56166079A (en) 1981-12-19
DE3014823A1 (de) 1981-10-22
DE3014823C2 (de) 1986-10-09
EP0038283A1 (de) 1981-10-21
ATE3193T1 (de) 1983-05-15
JPH032671B2 (enrdf_load_stackoverflow) 1991-01-16
US4609294A (en) 1986-09-02

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