EP1333987A1 - Procede et dispositif d'orientation de tetes d'impression - Google Patents

Procede et dispositif d'orientation de tetes d'impression

Info

Publication number
EP1333987A1
EP1333987A1 EP01996463A EP01996463A EP1333987A1 EP 1333987 A1 EP1333987 A1 EP 1333987A1 EP 01996463 A EP01996463 A EP 01996463A EP 01996463 A EP01996463 A EP 01996463A EP 1333987 A1 EP1333987 A1 EP 1333987A1
Authority
EP
European Patent Office
Prior art keywords
printing
printhead
printing direction
print
print head
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
EP01996463A
Other languages
German (de)
English (en)
Other versions
EP1333987B1 (fr
Inventor
Rainer Eck
Michael Koblinger
Karl Erich Albert Schaschek
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer 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 Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP1333987A1 publication Critical patent/EP1333987A1/fr
Application granted granted Critical
Publication of EP1333987B1 publication Critical patent/EP1333987B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/10—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme
    • B41C1/1066—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme by spraying with powders, by using a nozzle, e.g. an ink jet system, by fusing a previously coated powder, e.g. with a laser
    • 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
    • B41J2/485—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by the process of building-up characters or image elements applicable to two or more kinds of printing or marking processes
    • B41J2/505—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by the process of building-up characters or image elements applicable to two or more kinds of printing or marking processes from an assembly of identical printing elements
    • B41J2/515—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by the process of building-up characters or image elements applicable to two or more kinds of printing or marking processes from an assembly of identical printing elements line printer type

Definitions

  • the invention relates to a method and device for aligning a print head according to the preamble of claims 1 or 8.
  • GB 2349607 A shows a printing device with a plurality of printing heads which are arranged offset from one another. These print heads are arranged inclined in the radial direction with respect to a printing cylinder.
  • the invention has for its object to provide a method and apparatus for aligning printheads.
  • the advantages that can be achieved with the invention are, in particular, that instead of moving the printhead biaxially, in order to transfer it from the printhead to the print material to adjust the sprayed print image accordingly, the alignment of the print head or its print image can be achieved more easily by the combination of a mechanical alignment in one axis and a timing of the shot of the print head.
  • the printhead is thus moved transversely to the printing direction to align the printhead, while the timing of the printhead is changed to align the printhead in the printing direction.
  • printing direction means the direction of movement of the printed material to be printed relative to the print heads. If printing plates mounted on rotating printing plate cylinders are provided as printing material, the printing direction is perpendicular to the axis of rotation of the printing plate cylinder.
  • the timing of the shot is expediently changed as a function of the printing speed, ie the running speed of the printed material. If the timing of the print head is delayed, the print material continues to pass under the print head and vice versa, so that the print image is adjusted in the printing direction.
  • a plurality of printheads of a multi-head printer can be aligned with one another, with at least one of the printheads being displaced transversely to the printing direction for aligning the printheads and / or at least one of the printheads being controlled to align the printheads in the printing direction.
  • the shift and a change in the time of the shot can be carried out individually for each printhead or, if appropriate, also for groups of the printheads together.
  • the print heads are advantageously moved uniaxially. They are only moved in order to achieve an orientation of the printed image transversely to the printing direction. This considerably simplifies the adjustment. In the case of a shift in only one direction, it need not be taken into account that the printed image could also be shifted in the other axis. The latter is adjusted by the timing of the shooting time. Preferably, all print heads that are moved are moved in the same direction, that is, along parallel axes. This simplifies the alignment process of the print heads relative to each other.
  • the print heads can be moved across the print direction. As a result, the alignment transverse to the printing direction is decoupled from the alignment in the printing direction, which simplifies the alignment process as a whole.
  • the print heads can each be pushed along an axis which encloses an acute angle to the printing direction.
  • a resulting offset of the print heads in the printing direction can be compensated for by a corresponding change in the moment of firing of the respective print head.
  • the displacement of the printheads parallel to the inclined position i. H. parallel to the longitudinal direction of the print heads defined by the row of printing nozzles.
  • an adaptation of the printing screen spacing in the printing direction to the printing nozzle spacing transversely to the printing direction can be accomplished by timing the individual nozzle sections as a function of the printing speed.
  • the alignment can advantageously be carried out using a printhead positioning device for the alignment of the print head only transversely to the print direction and a timing device for controlling the timing of the print head for its alignment in the print direction.
  • the positioning device is preferably designed as a uniaxial displacement device with which the printhead can be displaced along an axis.
  • the displacement axis of the positioning device can be arranged transversely to the printing direction.
  • the printhead positioning device has an axis of displacement which includes an acute angle to the printing direction.
  • the time control device is designed in such a way that the resulting offset of the print head in the printing direction is compensated for by a change in the point in time at which the print head shoots the individual drops.
  • the device has a plurality of print head positioning devices for aligning a plurality of print heads relative to one another.
  • the print heads can preferably be set independently of one another.
  • the control device can be designed in such a way that the time at which the print heads are fired can be set individually and / or in groups.
  • FIG. 1 An embodiment of the invention is shown in the drawing and will be described in more detail below.
  • the single figure shows a schematic representation of a multi-head inkjet printing system with a device for aligning the print heads of the printing system according to a preferred embodiment of the invention.
  • a multi-head inkjet printing system 3 is provided to image the printing plate. This has a pressure bar 4, which is parallel to the longitudinal axis 2 of the printing plate cylinder 1 extends opposite its circumferential side.
  • the print heads 5 are arranged in two rows, the print heads 5 being arranged offset in the different rows transversely to the printing direction 6.
  • the printing direction 6 is determined by the rotational movement of the printing plate cylinder 1, it runs perpendicular to the longitudinal axis 2.
  • the print heads 5 are slidably mounted on the print bar 4.
  • the printheads 5 can be individually displaced relative to the printhead 4 along an axis, so that the position of the respective printhead 5 changes transversely to the printing direction 6, that is to say parallel to the longitudinal axis 2.
  • the print image can be set transversely to the printing direction 6.
  • a time control device 8 which controls the timing of the shot of the individual print heads 5 or the individual print nozzles.
  • One axis is defined by the direction in which the print material is moving. Accordingly, this axis can be aligned by skilful timing of the shooting time of the individual pressure nozzles.
  • the other axis is accordingly transverse to the printing direction, in the example shown parallel to the longitudinal axis 2. This axis alone can accordingly be mechanically aligned more easily.
  • the alignment described can also be used in other printhead printing systems for other printing applications in which the position of the printheads 5 is to be aligned.
  • This printing device applies a means for changing the coating (an additional coating can be applied, properties of a coating can be changed) of a printing form, in particular a planographic printing form of a printing press.

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Ink Jet (AREA)
  • Facsimile Heads (AREA)
EP01996463A 2000-11-17 2001-10-15 Procede et dispositif d'orientation de tetes d'impression Expired - Lifetime EP1333987B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10057062A DE10057062C1 (de) 2000-11-17 2000-11-17 Verfahren und Vorrichtung zum Ausrichten von Druckköpfen
DE10057062 2000-11-17
PCT/DE2001/003945 WO2002040280A1 (fr) 2000-11-17 2001-10-15 Procede et dispositif d'orientation de tetes d'impression

Publications (2)

Publication Number Publication Date
EP1333987A1 true EP1333987A1 (fr) 2003-08-13
EP1333987B1 EP1333987B1 (fr) 2005-08-17

Family

ID=7663672

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01996463A Expired - Lifetime EP1333987B1 (fr) 2000-11-17 2001-10-15 Procede et dispositif d'orientation de tetes d'impression

Country Status (6)

Country Link
US (1) US6805421B2 (fr)
EP (1) EP1333987B1 (fr)
AT (1) ATE302119T1 (fr)
AU (1) AU2002223486A1 (fr)
DE (2) DE10057062C1 (fr)
WO (1) WO2002040280A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102285229B (zh) * 2008-05-08 2013-05-22 金宝电子工业股份有限公司 喷墨头的定位装置
CN101574868B (zh) * 2008-05-08 2012-01-25 金宝电子工业股份有限公司 喷墨头的定位方法
CN101407135B (zh) * 2008-10-17 2011-03-30 北大方正集团有限公司 数码印刷设备、主机、印刷机及数据传输方法
JP5713608B2 (ja) * 2010-09-01 2015-05-07 キヤノン株式会社 プリント装置
DE102010060405B4 (de) 2010-11-08 2017-08-31 Océ Printing Systems GmbH & Co. KG Vorrichtung zur Positionierung mindestens eines Druckriegels in Druckposition bei einem Tintendruckgerät
DE102010060412B4 (de) 2010-11-08 2017-10-26 Océ Printing Systems GmbH & Co. KG Vorrichtung zur mechanischen Einstellung eines Druckkopfes bei einem Tintendruckgerät
DE102012101432A1 (de) 2012-02-23 2013-08-29 OCé PRINTING SYSTEMS GMBH Verfahren zur Einstellung mindestens eines Druckkopfes in einer Druckkopfanordnung bei einem Tintendruckgerät
DE102016209945A1 (de) 2015-07-07 2017-01-12 Heidelberger Druckmaschinen Ag Drucker

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4675696A (en) * 1982-04-07 1987-06-23 Canon Kabushiki Kaisha Recording apparatus
EP0257570A3 (fr) * 1986-08-25 1988-11-30 Siemens Aktiengesellschaft Méthode d'alignement des injecteurs d'une tête d'impression à jet d'encre dans un dispositif d'enregistrement à encre et circuit électronique adapté à la mise en oeuvre de cette méthode
JPH022017A (ja) * 1988-06-13 1990-01-08 Brother Ind Ltd 印字装置
US5428375A (en) * 1992-05-29 1995-06-27 Simon; Robert J. Multiple print head ink jet printer
US5625389A (en) * 1994-01-31 1997-04-29 Tektronix, Inc. Ink-jet print head array and interlace method
US5719602A (en) * 1995-01-20 1998-02-17 Hewlett-Packard Company Controlling PWA inkjet nozzle timing as a function of media speed
US5838343A (en) * 1995-05-12 1998-11-17 Moore Business Forms, Inc. Backup print cartridge for bank of ink-jet printing cartridges
JPH10100396A (ja) 1996-09-30 1998-04-21 Canon Inc インクジェット記録システム及びインクジェット記録方法及びライン間の混色の防止方法
FR2758762B1 (fr) * 1997-01-24 1999-04-16 Neopost Ind Tete d'impression postale munie d'un dispositif de reglage d'alignement
JP2000000963A (ja) * 1998-06-16 2000-01-07 Canon Inc 印刷装置
US6154232A (en) * 1999-01-19 2000-11-28 Hewlett-Packard Company Drum-based printers using multiple pens per color
US6655771B2 (en) * 2000-06-27 2003-12-02 Fuji Photo Film Co., Ltd. Head position detecting method, recording head, image recording apparatus and storage medium

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0240280A1 *

Also Published As

Publication number Publication date
WO2002040280A1 (fr) 2002-05-23
ATE302119T1 (de) 2005-09-15
AU2002223486A1 (en) 2002-05-27
DE50107151D1 (de) 2005-09-22
DE10057062C1 (de) 2002-05-23
EP1333987B1 (fr) 2005-08-17
US20040036727A1 (en) 2004-02-26
US6805421B2 (en) 2004-10-19

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