WO1999022942A1 - Imprimante - Google Patents

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Publication number
WO1999022942A1
WO1999022942A1 PCT/SE1998/001960 SE9801960W WO9922942A1 WO 1999022942 A1 WO1999022942 A1 WO 1999022942A1 SE 9801960 W SE9801960 W SE 9801960W WO 9922942 A1 WO9922942 A1 WO 9922942A1
Authority
WO
WIPO (PCT)
Prior art keywords
bit map
actuator
channels
pixel positions
mode
Prior art date
Application number
PCT/SE1998/001960
Other languages
English (en)
Inventor
Joachim Kretschmer
Gerhard Beurer
Original Assignee
Xaarjet Ab
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 Xaarjet Ab filed Critical Xaarjet Ab
Priority to AU10576/99A priority Critical patent/AU1057699A/en
Publication of WO1999022942A1 publication Critical patent/WO1999022942A1/fr

Links

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
    • B41J2/485—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
    • B41J2/5056—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 using dot arrays providing selective dot disposition modes, e.g. different dot densities for high speed and high-quality printing, array line selections for multi-pass printing, or dot shifts for character inclination
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G06K15/10—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by matrix printers
    • G06K15/102—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by matrix printers using ink jet print 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
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01—Embodiments of or processes related to ink-jet heads
    • B41J2202/10—Finger type piezoelectric elements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K2215/00—Arrangements for producing a permanent visual presentation of the output data
    • G06K2215/0002—Handling the output data
    • G06K2215/0077—Raster outputting to the print element(s)

Definitions

  • Images to be reproduced sometimes include straight line images.
  • Modern word processing output for example, often includes lines such as frames for tables. Such straight lines are commonly parallel or perpendicular to the direction of scanning movement of the printhead relative to the substrate.
  • An aspect of the invention relates to the problem of obtaining a droplet deposition apparatus capable of selectably reproducing an image with a first resolution or with a second, lower resolution in a shorter time, while eliminating droplet positioning errors and nrinimizmg distortion of the reproduced image
  • Yet an aspect of the invention relates to the problem of obtaining a droplet deposi- tion apparatus enabling a quick reproduction of an image with a decreased resolution while mamtaining accurate reproduction of straight line images at least in the horizontal and in the vertical directions.
  • a method of operating a droplet deposition apparatus comprising a movable carriage (60), an actuator (100) having a plurality of channels provided with electrodes being adapted to receive electric signals to cause liquid in selected channels to be ejected therefrom, where the actuator is mounted on the carriage, and means (440) for selecting a mode of operation.
  • Fig. 1 A shows a schematic block diagram of an embodiment of a printer including a print head with an actuator.
  • Fig. 3 is an exploded partly diagrammatic perspective view of a portion of the actuator of Fig. 2, including an actuator plate.
  • Fig. 4 is a sectional perspective view of a part of the actuator plate of Fig. 3.
  • Fig. 6 shows, schematically, the print head of Fig. 2 against the background of a print matrix.
  • Fig. 7 shows, schematically, the tilted print head of Fig. 6 at a time when one group of nozzles are in a printing position.
  • Fig. 8 illustrates the relation between shuttle velocity and horizontal resolution.
  • Fig. 9 illustrates a pattern of pixel positions.
  • Fig. 10 is a schematic block diagram of an embodiment of the printer data interface shown in Fig. 1.
  • Fig. 12 illustrates an example image to be printed.
  • Fig. 14 illustrates the bit map portion of Fig. 13 together with an indication of nozzles used for achieving the pixel positions according to Fig. 13 in a first resolution mode.
  • Fig. 15 illustrates a tilted matrix grid superposed on the pixel positions of Fig. 9.
  • the printer includes means for feeding a substrate 80 in a direction y perpendicular to the reciprocal motion of the shuttle unit.
  • the ink jet printhead outputs ink droplets and the shuttle as well as the substrate 80 is arranged to move relative to one-another so that dots of ink are deposited in precise patterns on the surface of the substrate 80.
  • the printhead 50 is coupled to the printer data interface 30 via a plurality of electrical conductors 90.
  • the ink jet printhead 50 includes an actuator 100 and an actuator control unit 110.
  • the actuator 100 includes a plurality of channels having nozzles for ejecting ink droplets (Figure IB).
  • FIG 3 is an exploded partly diagrammatic perspective view of a portion of the actuator 100.
  • the actuator comprises an actuator plate 200 made from polarized piezo-electric material.
  • the actuator plate 200 includes grooves of a rectangular cross section forming channels 220.
  • the channels 220 are separated by side walls 230.
  • a plate 265 provided with nozzle openings 120 is arranged such that all channels are provided with a nozzle.
  • a cover plate 210 is cemented onto the actuator plate 200 so as to define, together with the walls 230, channels 220 with nozzles 120.
  • Figure 4 is a sectional perspective view of a part of the actuator plate 200.
  • the bond wire Dl connects to a thin metal layer 270 on a surface of the actuator plate 200.
  • the metal layer also covers a part of the surface of the wall 230 facing towards channel Cl as illustrated by the shaded area El in Figure 3.
  • Another bond wire D2 connects to metal layers E2 in channel C2 in the same manner.
  • the metal layers E2 form electrodes on the wall surfaces facing channel C2.
  • Figure IB is a block diagram of an embodiment comprising the actuator 100, the actuator control circuit 110, printer data interface 30 and a power supply 320.
  • the actuator control unit 110 comprises a plurality of controllable actuator drive signal outputs 330. Each actuator drive signal output is coupled to the electrode E of a corresponding channel in the actuator 100, as illustrated in Figure IB and described above.
  • the actuator is tilted by an angle ⁇ in relation to the direction x of movement of the actuator.
  • a tilt angle ⁇ 31 degrees a resolution of 360 dpi is obtained.
  • the angle 31 degrees corresponds to a tilt ratio of 5/3, as seen in Figure 6.
  • the carriage speed is 352,8 mm s and with the altered resolution mode the carriage speed is doubled to 705,6 mm/s.
  • the frequency of droplet ejection is 5000 Hz in both modes of operation.
  • printing phase order is CB A in the positive shuttle movement direction under normal resolution mode
  • the phase order is reversed (ABC) when the horizontal resolution is decreased by a factor two (2). It is also within the scope of the invention to decrease the horizontal resolution by a factor exceeding two.
  • the phase order will be CBA in the positive shuttle movement, and the carriage speed will be quadrupled.
  • ⁇ tan "1 [Y/X], where Y/X is: 1/3, 2/3; 4/3; 5/3; 7/3; 8/3; 10/3; 11/3; 13/3; 14/3 or 16/3.
  • the bit map illustrated in Fig 13, is delivered to print order adapter 470 by PDL interpreter 432.
  • the purpose of adapter 470 is to obtain a bit map adapted such that the printer can achieve a print out of the image in short time and with optimum print quality.
  • the adapter 470 receives a matrix having a binary bit for defining each pixel position, as exemplified in Fig 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Ink Jet (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)

Abstract

L'invention porte sur un procédé d'exploitation d'un dispositif de dépôt de gouttelettes comportant: un chariot mobile (60); un actionneur (100) monté sur le chariot et comportant une série de canaux munis d'électrodes recevant des signaux électriques entraînant l'éjection du liquide présent dans lesdits canaux; et un moyen (440) de sélection du mode de fonctionnement. Le procédé comporte les étapes suivantes: réception d'informations d'impression; production à partir des informations d'impression d'un premier topogramme binaire définissant les premières positions de pixels à cibler dans un premier mode, lesquelles positions présentant des espacements Sx selon une droite orientée dans un premier sens (x); production à partir du premier topogramme binaire d'un deuxième topogramme binaire définissant de deuxièmes positions de pixels à cibler dans un deuxième mode; mise en mouvement du chariot à une vitesse dépendant du mode sélectionné et entraînant l'éjection du liquide des canaux sélectionnés de manière à ce que chacun desdits groupes de positions de pixels présente de premiers espacements plus rapprochés RSx selon une droite orientée dans la première direction de la matrice (x), R étant un entier positif égal ou supérieur à deux, et de deuxièmes espacements plus rapprochés selon une droite inclinée d'un angle β par rapport à la première direction (x) de la matrice, ce deuxième espacement étant inférieur à RSx.
PCT/SE1998/001960 1997-10-31 1998-10-29 Imprimante WO1999022942A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU10576/99A AU1057699A (en) 1997-10-31 1998-10-29 Printer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9703999-4 1997-10-31
SE9703999A SE511213C2 (sv) 1997-10-31 1997-10-31 Förfarande för drift av en droppdeponeringsanordning samt en droppdeponeringsanordning

Publications (1)

Publication Number Publication Date
WO1999022942A1 true WO1999022942A1 (fr) 1999-05-14

Family

ID=20408828

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1998/001960 WO1999022942A1 (fr) 1997-10-31 1998-10-29 Imprimante

Country Status (3)

Country Link
AU (1) AU1057699A (fr)
SE (1) SE511213C2 (fr)
WO (1) WO1999022942A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1120256A2 (fr) * 2000-01-25 2001-08-01 Seiko Epson Corporation Dispositif d'enregistrement jet d'encre, méthode pour le commander, et support dans lequel la méthode a été enregistrée

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995007185A1 (fr) * 1993-09-09 1995-03-16 Xaar Limited Appareil de depot de gouttelettes

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995007185A1 (fr) * 1993-09-09 1995-03-16 Xaar Limited Appareil de depot de gouttelettes

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1120256A2 (fr) * 2000-01-25 2001-08-01 Seiko Epson Corporation Dispositif d'enregistrement jet d'encre, méthode pour le commander, et support dans lequel la méthode a été enregistrée
EP1120256A3 (fr) * 2000-01-25 2001-10-31 Seiko Epson Corporation Dispositif d'enregistrement jet d'encre, méthode pour le commander, et support dans lequel la méthode a été enregistrée
US6726299B2 (en) 2000-01-25 2004-04-27 Seiko Epson Corporation Ink jet recording apparatus, method of controlling the apparatus, and recording medium having the method recorded thereon
US7441855B2 (en) 2000-01-25 2008-10-28 Seiko Epson Corporation Ink jet recording apparatus, method of controlling the apparatus, and recording medium having the method recorded thereon

Also Published As

Publication number Publication date
SE9703999D0 (sv) 1997-10-31
SE511213C2 (sv) 1999-08-23
AU1057699A (en) 1999-05-24
SE9703999L (sv) 1999-05-01

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