WO2003008195A1 - Dispositif d'impression a tete d'impression a jet d'encre de type parallele - Google Patents

Dispositif d'impression a tete d'impression a jet d'encre de type parallele Download PDF

Info

Publication number
WO2003008195A1
WO2003008195A1 PCT/IT2002/000442 IT0200442W WO03008195A1 WO 2003008195 A1 WO2003008195 A1 WO 2003008195A1 IT 0200442 W IT0200442 W IT 0200442W WO 03008195 A1 WO03008195 A1 WO 03008195A1
Authority
WO
WIPO (PCT)
Prior art keywords
nozzles
printing
head
motion
sheet
Prior art date
Application number
PCT/IT2002/000442
Other languages
English (en)
Inventor
Renato Conta
Alessandro Scardovi
Original Assignee
Olivetti I-Jet S.P.A.
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 Olivetti I-Jet S.P.A. filed Critical Olivetti I-Jet S.P.A.
Priority to DE60235631T priority Critical patent/DE60235631D1/de
Priority to AT02755626T priority patent/ATE460286T1/de
Priority to EP02755626A priority patent/EP1412194B1/fr
Publication of WO2003008195A1 publication Critical patent/WO2003008195A1/fr

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01Ink jet
    • B41J2/21Ink jet for multi-colour printing
    • B41J2/2132Print quality control characterised by dot disposition, e.g. for reducing white stripes or banding
    • B41J2/2139Compensation for malfunctioning nozzles creating dot place or dot size errors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/36Blanking or long feeds; Feeding to a particular line, e.g. by rotation of platen or feed roller
    • B41J11/42Controlling printing material conveyance for accurate alignment of the printing material with the printhead; Print registering
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J13/00Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
    • B41J13/26Registering devices
    • B41J13/32Means for positioning sheets in two directions under one control, e.g. for format control or orthogonal sheet positioning
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/145Arrangement thereof
    • B41J2/155Arrangement thereof for line printing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01Ink jet
    • B41J2/21Ink jet for multi-colour printing
    • B41J2/2132Print quality control characterised by dot disposition, e.g. for reducing white stripes or banding
    • B41J2/2146Print quality control characterised by dot disposition, e.g. for reducing white stripes or banding for line print heads
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/485Typewriters 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
    • B41J2/505Typewriters 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
    • B41J2/515Typewriters 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J25/00Actions or mechanisms not otherwise provided for
    • B41J25/001Mechanisms for bodily moving print heads or carriages parallel to the paper surface

Definitions

  • This invention relates to a printing device with parallel or "in-line” type ink jet head, used for forming black or colour images on a print medium.
  • the invention concerns a printing device with parallel or in-line ink jet head, comprising a plurality of nozzles according to the introductory part of claim 1.
  • the printing device may be used in general purpose printers . or for photographic reproductions, in labelling machines, or in similar machines. Printing is effected on a medium consisting of a sheet of paper, or plastic, or other material.
  • An ink jet printhead of the thermal type for instance, provides for a plate with one or more rows of nozzles, an actuating assembly with resistors associated with the nozzles and the emission of droplets of ink perpendicularly to the plate.
  • This is widely known, and will not therefore be described in detail herein.
  • Addressing techniques have also been developed that modulate various dots on the same print location (multidrop), obtaining effects similar to those of an enhanced printing definition. This is particularly widespread in coloui- heads, and requires compact size actuators and hydraulic circuits, precision of assembly and stringent tolerances.
  • Printing devices with parallel or in-line type ink jet head produce printouts in a short space of time, in relation to the number of dots comprising the image, and are compact. Furthermore, on account of the fixed head, these devices have a lesser number of moving parts than the devices that employ a serial type ink jet head.
  • a common problem shared by all printing devices based on ink jet technologies concerns the fact that operating defects of the individual nozzles are intrinsically evident on the printed sheet.
  • shingling In printing devices with a serial head, to obtain high quality images, "shingling" is used, by which is meant methods in which the sheet is fed by an amount less than the height of the head and in which a final line of print is obtained with various overlapping passes.
  • An elementary row is not printed by one nozzle associated therewith but is composed by dots of ink emitted by nozzles in different parts of the head. The advantage lies in the fact that the effect of dots missing due to a defective nozzle is lessened over various rows, and the visual disturbance is reduced.
  • any defect of a nozzle is particularly obvious on the printed sheet, where the printing positions on the sheet are unambiguously associated with the individual nozzles, since all the elementary rows into which an image is broken down and on the same print grid, the dot associated with the faulty nozzle is missing. This is manifested in the appearance of an unprinted, and therefore clearer, line over the entire height of the image.
  • the object of this invention is to produce a printing device with "in-line” ink jet head, in which the faulty operation of a nozzle has minimal visual disturbance on the printed sheet.
  • Another object is to obtain high definition printing using an in-line head having a density of nozzles with lower definition, or to obtain printing of average definition and high speed with a nozzle density lesser than that of the printable dots.
  • Another object of the invention is to provide a printing device with ink jet head that has a good dot definition and which is suitable for miniaturization, in particular for integration in digital cameras or in associated compact accessories.
  • a further object of the invention is to obtain a printing device with an in-line ink jet head suitable for miniaturization and autonomous feeding and in which the peak currents absorbed by the actuators of the row of nozzles in the head are minimal.
  • the tanks for the different colour inks may be applied to the medium of the head and be easily interchangeable.
  • the tanks may be unconstrained from the head when the head is subject to the alternating motion, according to the characteristic part of claim 17.
  • Fig. 1 Represents a schematic view of a printer that employs a printing device with parallel or in-line type ink jet head, according to the invention
  • Fig. 2 is a partial schematic view of an in-line ink j et head
  • Fig. 3 represents a block diagram of control of the printing device according to the invention.
  • Fig. 4 represents a variant of a printing device with ink jet head according to the invention.
  • Fig. 5 is a diagram of dots printed by a device according to the known art
  • Figs. 5a, 5b and 5c represent different diagrams of dots printable by a printing device of the invention, in accordance with a first methodology
  • Fig. 6a represents a diagram of dots printable by a device of the invention, in accordance with a second methodology
  • Fig. 6b represents a variant of the diagram of printable dots of Fig. 6a
  • Fig. 7 is a diagram of an in-line ink jet head according to the invention.
  • Fig. 8 represents a diagram of operation of the printing device according to the invention.
  • a printer 31 comprising a fixed structure 32 and a printing device
  • the device 33 includes a contrast roller (or platen) 34, electronic control means 36 and a colour, parallel or in-line type printhead 37.
  • the head 37 is arranged in front of the platen
  • the platen 34 for its full length and comprises a plurality of nozzles 38 suitable for actuation by corresponding resistors.
  • the platen 34 supports a print medium which consists of a sheet 39 of paper, plastic or other material and is fed by a step motor 41 (Fig. 3) by way of the electronic means 36 for defining the elementary lines of the image.
  • Fig. 1 Also shown in Fig. 1 are the reference axes X, Y and Z:
  • the X axis is horizontal in use, i.e. parallel to the axis of the platen 34 and to a transverse axis of the head 37;
  • the Y axis is vertical, i.e. parallel to the direction of motion of the medium 39 during the line feed function;
  • the Z axis is perpendicular to the X and Y axes, parallel to the direction of emission of the ink droplets by the nozzles 38.
  • the nozzles 38 of the head 37 are made on a nozzles plate 51, arranged in three rows 56, 57, 58 parallel to the X axis, respectively associated with the colours yellow, magenta and cyan.
  • the distance between the end nozzles of a row, indicated M, is associated with the effective width for in-line printing.
  • the nozzles plate 51 (Figs. 2 and 7) is, for example, of the type described in the patent
  • EP 0 652 107 made up of six printing modules 59, having a distance H between the end nozzles of 25.4 mm (1 inch) in order to form the distance M.
  • Each module 59 contains 600 nozzles 38 kept apart by a distance "p" of 42 ⁇ m (1/600 of an inch) and a definition of 1/600".
  • Each colour row 56, 57, 58 is made up of pairs of staggered modules in such a way as to have 1200 nozzles, giving a printing width of 50.8 mm.
  • the head 37 (Fig. 1) is made to move with respect to the sheet 39, making allowance for extra nozzles 38 with respect to those necessary to perform a line of print according to the known technique of figure 5. Movement and actuation of the nozzles are regulated individually in a reciprocal relationship and with respect to the sheet feeding motion in such a way as to conceal possible unprinted dots on the sheet and/or increase the equivalent print definition.
  • the volume of the droplets emitted by the nozzles remains the same but each line is printed in several passes, activating the nozzles with permutations consistent with the number of passes.
  • a defect of one nozzle is diluted over a number of columns and for an extension depending on the number of passes and on the width of the oscillations.
  • a multi-pass mode is achieved which, by applying a shingling form of masking, reduces the visual disturbance.
  • Shown in the drawings of Figs. 5a, 5b and 5c are the dots formed by a generic nozzle in relation to a series of printing positions, relative to shingling modes with 2, 3 and 4 passes or levels, in the case of continuous feeding of the sheet 39.
  • each grid associated with the printing positions is sent various ink droplets of lesser volume than in the previous case (multidrop/multilayer).
  • the nozzles 38 may be controlled in relation to the alternating motion between the head 37 and the sheet 39 so as to address the droplets to different areas of the grid.
  • the droplets may be freely addressed to four areas of the grid.
  • the grid may therefore be covered by means of a quadruple form of dot addressing, giving an equivalent definition of approx. 1200 X 1200 dpi or, to use a different terminology, a definition of 600 X 600 dpi with four-level modulation.
  • the head 37 also has allowance for more nozzles 38 to cover all the dots of the grids associated with the end positions of the line of print.
  • Fig. 6a illustrates an example of printing with four-level modulation, volume 5 pi and an oscillation width of 5p in the two directions.
  • the result is an automatic shingling effect for the missing or defective dots.
  • Each grid has differently coloured dots and the number of extra nozzles is ten.
  • the grid may contain more or less dots.
  • heads of 20 pi. are suitable and for eight dots in the grid heads of 10 pi.
  • shingling mode and modulation mode lower the overall printing speed.
  • printing speed is high at any rate while the considerations regarding noise level and acoustic disturbance linked with the oscillation frequency of the head or sheet apply. Therefore, if the sheet feeding motion is lowered, the frequency is lowered to under 40 Hz.
  • the shingling of the first embodiment and the multi-level modulation of the second embodiment may be suitably combined to give different equivalent definitions and different levels of defect masking with a scanning motion amplitude that varies between one and sixty-four times the step "p".
  • the diagram of figure 6b shows an example of printing with shingling and four-level modulation and alternating motion amplitude equal to 9p in the two directions.
  • the number of extra nozzles is eighteen and the missing dot of a nozzle is distributed over a wide area and with a density that renders visual disturbance imperceptible.
  • Table 1 shows various application solutions by droplet volume, number of addressable dots, shingling levels, number of extra nozzles and frequencies of oscillation between head and sheet and other significant parameters.
  • the limit that defines the passage between increasing the modulation/definition levels and shingling is given upon reaching full printing saturation (volume of ink/pixel). For instance, for a grid of 600x600 dpi this limit is given by 20pl and shingling masking rules out the higher definition levels.
  • the head 37 is supported by a carriage 60 which can effect a scanning movement of the desired width with respect to the platen 34.
  • the carriage 60 is suitable for sliding on guides 61 and 62 and its movement is controlled, for example, by means of a cam
  • Fig. 8 in relation with figure 6a, depicts on the X axis the oscillation time of the carriage 60 and on the Y axis its displacement according to a law of linear motion.
  • Feeding of the sheet 39 in the direction of the Y axis is equal to p/4 (1/2400") for each pass and the relative scanning of the carriage in the direction of the X axis is equal to 5/4p.
  • Excitations of the nozzles 38 occur at constant intervals "t" equal to 1/16 of the period "T", corresponding to a double pass of the carriage.
  • the law of motion of the carriage may be sinusoidal type and actuation of the nozzles may be slave driven, with feedback, by a carriage linear position encoder or by other systems without feedback, which ensure that the dots are equidistant and that there is alignment of the printing positions of the different elementary line feeds.
  • the circuit 36 comprises, for example, a controller unit 71, a driver 72 for the motor 41 and a driver 73 for the actuators of the head 37.
  • the controller 71 controls the drivers 72 and 73 and performs, on each pass, the maskings and permutations of the commands of the nozzles, associated with the oscillating movement of the carriage and with the printing mode.
  • the unit 71 also provides the timing for command of the nozzles and synchronization of these commands with the line feed movements.
  • Carriage oscillation frequency is selected low, between 5 and 40 Hz and preferably less than 20 Hz. In this way, as well as lowering the noise emitted by the carriage when moving, the printing time may be considered instantaneous with respect to the movements under way and there is a wide dispersion of missing dots.
  • the control circuit 36 excites the resistors actuating the head 37 in sequential groups in order to minimize current peaks and allow use of an independent battery power supply.
  • the scanning movement of the head 37 does not substantially worsen the working characteristics of the printer 31.
  • a scanning frequency of 10 Hz it takes 25 ms to travel the distance equal to l A of the oscillation path of the carriage 60.
  • the time needed to write with 1200 nozzles is therefore 16 times less that the time needed to travel this distance and accordingly there are no drawbacks regarding deposition of the ink on the sheet.
  • Shown in figure 4 is a variant, designated with the numeral 76, of the printing device of the invention.
  • the printing sheet here designated with the numeral 77
  • the rollers 78-1, 78-2 and 79-1, 79-2 are driven by a relative step motor and provide the feeding movement of the sheet 77 on the Y axis. Again in this case, there is oscillating movement between head 37 and sheet 77.
  • the ink jet head 37 is fixed and the oscillating movement is obtained by moving the four rollers along their axis together with the sheet 77.
  • the four rollers are fixed along their axis and the head 37 is made oscillate with respect to the sheet 77.
  • the printing device 76 is suitable for miniaturization. It may be used to advantage in integration with digital cameras or in relative, compact accessories for printing adequately- sized photographs (10 x 15 cm). In these cases, in fact, the number of nozzles is low and the times needed to invert motion are perfectly acceptable.
  • the tanks for the different colour inks can be applied by pressure-fit into the head support and are easily interchanged, as indicated in the above- mentioned patent EP 0 652 107.
  • the three inlc tanks are in flexible connection, for example through bellows, with the rows of nozzles 38.
  • the tanks are in a fixed position and the head remains released from the tanks, minimizing inertia of the moving parts.
  • the device 74 is also open to feeding with an autonomous power supply. Excitation of the resistors actuating the head 37 in sequential groups in fact renders minimal the peak currents absorbed by the actuators of the nozzles, guaranteeing the batteries supplying power an acceptable life.

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Ink Jet (AREA)
  • Facsimile Heads (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)

Abstract

L'invention concerne un dispositif d'impression (33) comportant une tête à jet d'encre (37) en ligne. Le dispositif selon l'invention comprend une pluralité de buses (38) disposées côte-à-côte, face à une feuille d'impression (39), pouvant se déplacer longitudinalement pour permettre l'impression en ligne par les buses. La tête (37) est ouverte à un mouvement transversal par rapport au support d'impression (39), associé au mouvement longitudinal de la feuille (39), sur une extension, la commande des activations des buses produisant un effet de masquage des points n'ayant pas été imprimés suite à un dysfonctionnement d'au moins une des buses et/ou à une augmentation de la définition d'impression équivalente.
PCT/IT2002/000442 2001-07-19 2002-07-04 Dispositif d'impression a tete d'impression a jet d'encre de type parallele WO2003008195A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE60235631T DE60235631D1 (de) 2001-07-19 2002-07-04 Druckvorrichtung mit tintenstrahldruckkopf des zeilentyps
AT02755626T ATE460286T1 (de) 2001-07-19 2002-07-04 Druckvorrichtung mit tintenstrahldruckkopf des zeilentyps
EP02755626A EP1412194B1 (fr) 2001-07-19 2002-07-04 Dispositif d'impression a tete d'impression a jet d'encre de type parallele

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO2001A000707 2001-07-19
IT2001TO000707A ITTO20010707A1 (it) 2001-07-19 2001-07-19 Dispositivo di stampa con testina a getto di inchiostro di tipo parallelo.

Publications (1)

Publication Number Publication Date
WO2003008195A1 true WO2003008195A1 (fr) 2003-01-30

Family

ID=11459064

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2002/000442 WO2003008195A1 (fr) 2001-07-19 2002-07-04 Dispositif d'impression a tete d'impression a jet d'encre de type parallele

Country Status (5)

Country Link
EP (1) EP1412194B1 (fr)
AT (1) ATE460286T1 (fr)
DE (1) DE60235631D1 (fr)
IT (1) ITTO20010707A1 (fr)
WO (1) WO2003008195A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1533124A1 (fr) * 2003-11-24 2005-05-25 Xerox Corporation Méthodes pour compenser des jets d'encre fonctionnant mal
EP1714787A1 (fr) 2005-04-20 2006-10-25 Samsung Electronics Co., Ltd. dispositif de formation d'images à jet d'encre
EP1733891A1 (fr) * 2005-06-17 2006-12-20 Samsung Electronics Co, Ltd Imprimante
DE102006038750A1 (de) * 2006-08-17 2008-02-21 Robert Bürkle GmbH Vorrichtung zum Bedrucken von starren Werkstücken
EP1946936A2 (fr) * 2007-01-18 2008-07-23 Samsung Electronics Co., Ltd Imprimante à jet d'encre, procédé de formations d'images et son procédé de compensation de la qualité d'image
EP2474419A1 (fr) * 2009-08-31 2012-07-11 Mimaki Engineering Co., Ltd. Imprimante à jet d encre en trois dimensions
WO2015180818A1 (fr) * 2014-05-28 2015-12-03 Durst Phototechnik Ag Procédé bidimensionnel avec module d'impression à balayage et alimentation en support
JP2017052182A (ja) * 2015-09-09 2017-03-16 カシオ計算機株式会社 印刷装置、印刷方法、及びプログラム

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20020876A1 (it) 2002-10-10 2004-04-11 Olivetti I Jet Spa Dispositivo di stampa a getto di inchiostro in parallelo

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4223323A (en) * 1978-12-15 1980-09-16 Ncr Corporation Ink jet printer
EP0023433A2 (fr) * 1979-07-30 1981-02-04 Xerox Corporation Enregistreur à grande vitesse à jet d'encre
EP0652107A2 (fr) * 1993-11-10 1995-05-10 OLIVETTI - CANON INDUSTRIALE S.p.A. Appareil pour l'impression en parallèle à structure modulaire et sa méthode de production
WO1997042035A1 (fr) * 1996-05-06 1997-11-13 Graphic Utilities, Inc. Reservoir d'encre auxiliaire, systeme et procede d'alimentation destines aux cartouches a jet d'encre
EP0963854A2 (fr) * 1998-05-25 1999-12-15 Konica Corporation Imprimante à jets d'encre du type en-ligne
US6217148B1 (en) * 1996-02-27 2001-04-17 Idanit Technologies Ltd. Method for operating an ink jet printer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4223323A (en) * 1978-12-15 1980-09-16 Ncr Corporation Ink jet printer
EP0023433A2 (fr) * 1979-07-30 1981-02-04 Xerox Corporation Enregistreur à grande vitesse à jet d'encre
EP0652107A2 (fr) * 1993-11-10 1995-05-10 OLIVETTI - CANON INDUSTRIALE S.p.A. Appareil pour l'impression en parallèle à structure modulaire et sa méthode de production
US6217148B1 (en) * 1996-02-27 2001-04-17 Idanit Technologies Ltd. Method for operating an ink jet printer
WO1997042035A1 (fr) * 1996-05-06 1997-11-13 Graphic Utilities, Inc. Reservoir d'encre auxiliaire, systeme et procede d'alimentation destines aux cartouches a jet d'encre
EP0963854A2 (fr) * 1998-05-25 1999-12-15 Konica Corporation Imprimante à jets d'encre du type en-ligne

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1533124A1 (fr) * 2003-11-24 2005-05-25 Xerox Corporation Méthodes pour compenser des jets d'encre fonctionnant mal
US7021739B2 (en) 2003-11-24 2006-04-04 Xerox Corporation Ink jet processes
EP1714787A1 (fr) 2005-04-20 2006-10-25 Samsung Electronics Co., Ltd. dispositif de formation d'images à jet d'encre
EP1733891A1 (fr) * 2005-06-17 2006-12-20 Samsung Electronics Co, Ltd Imprimante
DE102006038750A1 (de) * 2006-08-17 2008-02-21 Robert Bürkle GmbH Vorrichtung zum Bedrucken von starren Werkstücken
EP1946936A2 (fr) * 2007-01-18 2008-07-23 Samsung Electronics Co., Ltd Imprimante à jet d'encre, procédé de formations d'images et son procédé de compensation de la qualité d'image
EP1946936A3 (fr) * 2007-01-18 2010-01-27 Samsung Electronics Co., Ltd Imprimante à jet d'encre, procédé de formations d'images et son procédé de compensation de la qualité d'image
EP2474419A1 (fr) * 2009-08-31 2012-07-11 Mimaki Engineering Co., Ltd. Imprimante à jet d encre en trois dimensions
EP2474419A4 (fr) * 2009-08-31 2013-09-04 Mimaki Eng Kk Imprimante à jet d encre en trois dimensions
WO2015180818A1 (fr) * 2014-05-28 2015-12-03 Durst Phototechnik Ag Procédé bidimensionnel avec module d'impression à balayage et alimentation en support
JP2017052182A (ja) * 2015-09-09 2017-03-16 カシオ計算機株式会社 印刷装置、印刷方法、及びプログラム

Also Published As

Publication number Publication date
ITTO20010707A1 (it) 2003-01-20
ATE460286T1 (de) 2010-03-15
EP1412194A1 (fr) 2004-04-28
EP1412194B1 (fr) 2010-03-10
DE60235631D1 (de) 2010-04-22
ITTO20010707A0 (it) 2001-07-19

Similar Documents

Publication Publication Date Title
JP2657560B2 (ja) 2重モードインクジェットプリンター
US6464316B1 (en) Bi-directional printmode for improved edge quality
JP3163089B2 (ja) 複数ノズル型インクジェットプリンタによるピクセル位置印刷方法
US6547354B1 (en) Printing system that utilizes print masks with resolutions that are non-integral multiples of each other
JPH10508808A (ja) 高解像度マトリクスインクジェット装置
US20120105532A1 (en) Inkjet recording apparatus and image forming method
US8740329B2 (en) Inkjet printing apparatus and method for controlling drive of nozzles in inkjet printing apparatus
EP1412194B1 (fr) Dispositif d'impression a tete d'impression a jet d'encre de type parallele
US8562108B2 (en) Two pass print mode method and apparatus for limiting wind-related print defects
JP2003118098A (ja) プリントヘッド
JPH0569598A (ja) インタレース印刷方法
CN109318591B (zh) 图像形成装置以及图像形成方法
JPH07276794A (ja) 図形像のプリンティング方法及びそのプリンティング装置
US10265953B2 (en) Inkjet printer and printing method
EP3698978B1 (fr) Appareil de décharge de liquide, procédé de commande d'émission de lumière pour appareil de décharge de liquide et programme de commande d'émission de lumière
JP2012254615A (ja) 画像形成装置及び画像形成方法
US6695426B2 (en) Ink jet printer improved dot placement technique
JPH1148503A (ja) インクジェット記録ヘッドおよびインクジェット記録装置
JP2007130790A (ja) インクジェット記録装置
US6604812B2 (en) Print direction dependent firing frequency for improved edge quality
US20070013745A1 (en) Image forming apparatus and droplet ejection control method
JP5832360B2 (ja) インクジェット記録装置
JP2001038926A (ja) インクジェット記録装置
JP2001038927A (ja) インクジェット記録装置
JPH04361055A (ja) インクジェット記録方法

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AU BR CA CN HU IL IN JP KR MX RU SG SI TR US YU ZA

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LU MC NL PT SE SK TR

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 2002755626

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 2002755626

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP