EP0307800B1 - Imprimante par matrice de points - Google Patents

Imprimante par matrice de points Download PDF

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Publication number
EP0307800B1
EP0307800B1 EP88114695A EP88114695A EP0307800B1 EP 0307800 B1 EP0307800 B1 EP 0307800B1 EP 88114695 A EP88114695 A EP 88114695A EP 88114695 A EP88114695 A EP 88114695A EP 0307800 B1 EP0307800 B1 EP 0307800B1
Authority
EP
European Patent Office
Prior art keywords
write
rows
distance
writing
heads
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 - Lifetime
Application number
EP88114695A
Other languages
German (de)
English (en)
Other versions
EP0307800A1 (fr
Inventor
Kenth Dipl.-Ing. Nilsson
Bengt Dipl.-Ing. Jofs
Göran Dipl.-Ing. Skog
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.)
Siemens AG
Siemens Elema AB
Original Assignee
Siemens AG
Siemens Elema 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 Siemens AG, Siemens Elema AB filed Critical Siemens AG
Publication of EP0307800A1 publication Critical patent/EP0307800A1/fr
Application granted granted Critical
Publication of EP0307800B1 publication Critical patent/EP0307800B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B41J2/485—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
    • 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
    • B41J2202/20—Modules

Definitions

  • Matrix writing devices are generally understood to mean all writing devices which apply gradual, alphanumeric characters or images to a recording medium. Examples of this are dot matrix printers or ink drop printers. The width of the print heads is limited for manufacturing reasons. For the same reasons, the distance between adjacent writing elements cannot be reduced arbitrarily.
  • An ink mosaic writing device of this type is known for example from DE 25 27 647 CI. The maximum possible resolution is approx. 4 writing elements, i.e. Ink nozzles per mm.
  • US 4,593,295 shows a matrix writing device for multi-color printing, in which a block with a plurality of rows of writing nozzles arranged for gaps is used for different colors. This block is moved across the paper transport direction in both directions. In order to be able to print in both directions without noticeable differences in the color texture, the colors are distributed over the staggered rows in such a way that the different color texture results for neighboring points and thus outside the color discrimination of the human eye.
  • the present invention has for its object to provide a matrix writing device of the type mentioned that such that the resolution is better than that of the individual with a writing width that is greater than that of a single printhead and with a minimum number of necessary rows of printheads Print head and / or multi-color printing is made possible.
  • Phase means the distance between the individual writing elements.
  • the distance between two writing elements in a writing head corresponds to a phase shift of 360 °.
  • the arrangement of the write heads according to the invention makes it possible to obtain an increased resolution and at the same time a large write width with a minimal number of rows of write heads. If one were to attempt to achieve this goal with the known means, one would first have to arrange two rows of these write heads offset from one another to cover the entire desired writing width in order to achieve the basic resolution, which means the resolution of the individual write heads. If you only wanted to double the resolution, two further rows would have to be arranged with a gap between them, this time with a phase shift of 180 to that of the first two rows. In total, four rows of print heads would be necessary. Six rows would be necessary for a triple resolution.
  • the matrix writing device can also be used to achieve multi-color printing. If the normal raster principle is used, in which there is a shift between the individual color points, the factor by which the resolution should otherwise be increased can only be replaced by the number of desired colors. Four rows are required for three-color printing, each row being assigned a color and the first and fourth rows using the same color.
  • a multi-color print "in phase” is desired, ie a print in which ver If different colors are assigned to the same recording point, then according to the invention the phase shift is selected to be zero and the color of the print heads is cyclically interchanged in each row and between the rows.
  • a write head (1) is shown schematically in FIG. 1, which can represent, for example, the top view of the nozzle outlet openings of a piezoelectric ink drop recorder.
  • the writing elements (2) are practically formed by the nozzle outlet openings.
  • a needle or thermal printer can also be used instead of an ink drop pen. It is only essential that e.g. the alphanumeric characters or images to be displayed on a record carrier consist of the points of a matrix.
  • A denotes the write width of the write head (1), i.e. the distance from the center of the extreme left to the center of the extreme right writing element.
  • B denotes the width of the entire print head and s the distance between two writing elements (calculated from center to center).
  • FIG. 2 A known writing device is shown schematically in FIG. 2, in which it is only a matter of increasing the writing width in the case of stationary writing heads with unchanged resolution.
  • the resolution of the individual write head is referred to below as the basic resolution G.
  • four write heads (3 to 6) are arranged zigzag in a row in two rows.
  • the write heads (1, 3 to 6,) have edge regions that are larger than half the distance between two writing elements. It is therefore not possible to arrange the print heads in a row without having to accept resolution losses in the transition area from one write head to another. With the extremely small dimensions - about four writing elements per mm can be achieved in practice today - it is hardly possible in terms of manufacturing technology to achieve narrower edge areas.
  • FIG. 3 shows an arrangement known, for example from DE 33 06 098 A1, for increasing the resolution with a writing width which approximately corresponds to the writing width A.
  • Three write heads (7-9) are shown, each of which is 120 "out of phase with each other. This enables a resolution to be achieved that is three times higher than the basic resolution G.
  • the factor by which the basic resolution must be multiplied in order to achieve the one achieved Achieving resolution is denoted by n. By this factor, the distances between the matrix points that can be generated by the writing elements are practically reduced compared to the distance between the writing elements themselves.
  • the matrix writing device can also be used for multi-color representations.
  • 6 shows an exemplary embodiment for a three-color representation with a resolution that corresponds to the basic resolution G.
  • the basic resolution is four writing elements per mm.
  • the three colors should be shown shifted against each other according to the raster principle.
  • the colors selected are, for example, yellow, cyan and magenta.
  • the phase shift is again 120 0. In the lower part of FIG. 6, the recording points of the three colors are shown with the corresponding phase shift.
  • FIG. 7 shows a further example for four colors, black being added as the fourth color.
  • multi-color representations are intended in which all colors are to a certain extent "in phase", i.e. that they are plotted on top of one another on the same recording point, the formulas have to be varied slightly.
  • M m x n.
  • the shift results in D m x s.
  • the width of the print head here B (n + I) x m + s.
  • the number of rows of write heads required is n + I.
  • FIGS. 8 and 9 show two examples of three and four-color representations.
  • n 8
  • a four-color display with double basic resolution can be obtained for each color.
  • 9 rows of write heads are required compared to 16 rows in a conventional arrangement. This case is shown in FIG 10.
  • FIG. 11 shows schematically the outer basic structure of a complete matrix writing device.
  • a recording medium (12) for example normal registration paper, is drawn over transport rollers (10, 11) in the direction of arrow (13) via a spacer (14) on the end face (15) of a housing (16).
  • the connecting line (17) is guided into the housing (16) and is provided at its free end with a plug (18) for connection to a corresponding control device that supplies the control signals for recording the desired courses, characters or images.
  • the housing (16) contains the rows of write heads arranged according to the invention.

Landscapes

  • Ink Jet (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Printers Characterized By Their Purpose (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)

Claims (6)

1. Dispositif d'inscription matriciel comportant plusieurs têtes d'inscription qui sont disposées côte-à-côte suivant une rangée, qui possèdent chacune un nombre limité d'éléments d'inscription par unité de longueur et qui comportent une zone marginale qui est d'une taille supérieure à la moitié de la distance entre deux éléments d'inscription voisins, et comportant au moins deux rangées de ce type parallèles entre elles, caractérisé par le fait qu'il est prévu plus de deux rangées et qu'au moins une caractéristique des têtes d'inscription dans chaque rangée et entre les rangées est permutée cycliquement, la caractéristique des têtes d'inscription étant constituée soit par le déphasage, avec lequel les têtes d'inscription sont disposées, la distance de deux éléments d'inscription dans une tête d'inscription correspondant à un déphasage de 3600, soit par la couleur utilisée pour les différentes têtes d'inscription.
2. Dispositif d'inscription matriciel suivant la revendication 1, caractérisé par le fait que les têtes d'inscription dans une rangée et les rangées entre elles sont disposées en étant respectivement déphasées de moins de 360°.
3. Dispositif d'inscription matriciel suivant la revendication 1, caractérisé par le fait que le déphasage est inversement proportionnel à un facteur entier n > 1, dont la distance des points de la matrice, pouvant être produits par les éléments d'inscription, doit être réduite par rapport à la distance des éléments d'inscription.
4. Dispositif d'inscription matriciel suivant l'une des revendications 1 à 3, dans lequel M est le nombre des éléments d'inscription pour chaque tête d'inscription, A est la distance entre les centres des deux éléments d'inscription les plus extérieurs d'une tête d'inscription et s est la distance entre deux éléments d'inscription, caractérisé par le fait que les têtes d'inscription de rangées voisines sont décalées de la distance D = A/n + I/n x s et, à l'intérieur de la même rangée, la distance C entre le dernier élément d'inscription d'une tête d'inscription et le premier élément d'inscription de la tête d'inscription voisine est égale à D + s.
5. Dispositif d'inscription matriciel suivant l'une des revendications 2 à 4, caractérisé par le fait que les couleurs des têtes d'inscription dans chaque rangée et entre les rangées sont permutées cycliquement.
6. Dispositif d'inscription matriciel suivant la revendication 1, caractérisé par le fait que le déphasage est nul et que les couleurs des têtes d'inscription dans chaque rangée et entre les rangées sont permutées cycliquement et que la distance D, dont les têtes d'inscription de rangées voisines sont décalées, est égale à D = M/n x s, n étant le nombre des couleurs devant être représentées.
EP88114695A 1987-09-14 1988-09-08 Imprimante par matrice de points Expired - Lifetime EP0307800B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873730844 DE3730844A1 (de) 1987-09-14 1987-09-14 Matrix-schreibeinrichtung
DE3730844 1987-09-14

Publications (2)

Publication Number Publication Date
EP0307800A1 EP0307800A1 (fr) 1989-03-22
EP0307800B1 true EP0307800B1 (fr) 1992-03-11

Family

ID=6335975

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88114695A Expired - Lifetime EP0307800B1 (fr) 1987-09-14 1988-09-08 Imprimante par matrice de points

Country Status (4)

Country Link
US (1) US4922271A (fr)
EP (1) EP0307800B1 (fr)
JP (1) JPH01127364A (fr)
DE (2) DE3730844A1 (fr)

Families Citing this family (23)

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Publication number Priority date Publication date Assignee Title
CA2049571C (fr) 1990-10-19 2004-01-13 Kent D. Vincent Imprimante thermique a jet d'encre haute definition
US5347617A (en) * 1990-11-09 1994-09-13 Dataproducts Corporation Printer having a multiple scan line printhead controller
US5546114A (en) * 1991-09-18 1996-08-13 Tektronix, Inc. Systems and methods for making printed products
US5512930A (en) * 1991-09-18 1996-04-30 Tektronix, Inc. Systems and methods of printing by applying an image enhancing precoat
US5483268A (en) * 1992-04-17 1996-01-09 Rohm Co., Ltd. Method for driving ink jet print head
JPH05330085A (ja) * 1992-05-29 1993-12-14 Yoshida Kogyo Kk <Ykk> インクジェットによる連続走行帯状物用プリンター
DE4336416A1 (de) * 1993-10-19 1995-08-24 Francotyp Postalia Gmbh Face-Shooter-Tintenstrahldruckkopf und Verfahren zu seiner Herstellung
JPH0825635A (ja) * 1994-07-21 1996-01-30 Canon Inc インクジェットプリント装置およびプリントヘッドユニット
US6062666A (en) * 1994-11-07 2000-05-16 Canon Kabushiki Kaisha Ink jet recording method and apparatus beginning driving cycle with discharge elements other than at ends of substrates
US5598191A (en) * 1995-06-01 1997-01-28 Xerox Corporation Architecture for an ink jet printer with offset arrays of ejectors
JP3382438B2 (ja) * 1995-12-20 2003-03-04 キヤノン株式会社 記録装置
US6074112A (en) * 1996-12-19 2000-06-13 Agfa-Gevaert Printer for large format printing
US6102523A (en) * 1996-12-19 2000-08-15 Agfa-Gevaert Printer for large format printing using a direct electrostatic printing (DEP) engine
US5923348A (en) 1997-02-26 1999-07-13 Lexmark International, Inc. Method of printing using a printhead having multiple rows of ink emitting orifices
US6257699B1 (en) 1999-10-13 2001-07-10 Xerox Corporation Modular carriage assembly for use with high-speed, high-performance, printing device
FR2807360B1 (fr) * 2000-04-11 2002-10-31 Nipson Procede et dispositif de jonction de modules ou barrettes de tetes magnetographiques
AU2002223484A1 (en) 2000-11-17 2002-05-27 Koenig And Bauer Aktiengesellschaft Printing devices comprising a plurality of print heads
DE10057061C1 (de) * 2000-11-17 2002-05-23 Koenig & Bauer Ag Druckvorrichtung
US6663222B2 (en) 2000-12-22 2003-12-16 Agfa-Gevaert Ink jet printer with nozzle arrays that are moveable with respect to each other
DE10256614A1 (de) * 2002-12-03 2004-06-17 Basf Ag Vorrichtung und Verfahren zur Herstellung von Flexodruckplatten für den Zeitungsdruck mittels digitaler Bebilderung
US7530666B2 (en) * 2004-03-26 2009-05-12 Canon Kabushiki Kaisha Liquid discharge head, liquid discharge recording apparatus and liquid discharge recording method
US7645020B2 (en) 2004-07-27 2010-01-12 Neopost Technologies High speed serial printing using printheads
DE102005024007B4 (de) * 2005-05-25 2008-05-29 Koenig & Bauer Aktiengesellschaft Druckwerk mit Farbwerk zum Auftragen von Druckfarbe auf einen Formzylinder einer Druckmaschine

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DE3306098A1 (de) * 1983-02-22 1984-08-23 Siemens AG, 1000 Berlin und 8000 München Piezoelektrisch betriebener schreibkopf mit kanalmatrize
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Also Published As

Publication number Publication date
DE3730844A1 (de) 1989-03-23
JPH01127364A (ja) 1989-05-19
US4922271A (en) 1990-05-01
EP0307800A1 (fr) 1989-03-22
DE3869026D1 (de) 1992-04-16

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