EP0159402A1 - Dispositif d'enregistrement par encre pour obtenir des caractères de qualité variable - Google Patents

Dispositif d'enregistrement par encre pour obtenir des caractères de qualité variable Download PDF

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Publication number
EP0159402A1
EP0159402A1 EP84115424A EP84115424A EP0159402A1 EP 0159402 A1 EP0159402 A1 EP 0159402A1 EP 84115424 A EP84115424 A EP 84115424A EP 84115424 A EP84115424 A EP 84115424A EP 0159402 A1 EP0159402 A1 EP 0159402A1
Authority
EP
European Patent Office
Prior art keywords
ink
recording medium
quality
characters
diameter
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
EP84115424A
Other languages
German (de)
English (en)
Other versions
EP0159402B1 (fr
Inventor
Artur Dipl.-Ing. Milbrandt
Rüdiger Ing. Hillmann
Hubertus Ing. Reinfeld
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
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP0159402A1 publication Critical patent/EP0159402A1/fr
Application granted granted Critical
Publication of EP0159402B1 publication Critical patent/EP0159402B1/fr
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
    • B41J2/485—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
    • 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
    • B41J2/005—Typewriters 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
    • B41J2/01—Ink jet
    • B41J2/21—Ink jet for multi-colour printing
    • B41J2/2121—Ink jet for multi-colour printing characterised by dot size, e.g. combinations of printed dots of different diameter
    • B41J2/2128—Ink jet for multi-colour printing characterised by dot size, e.g. combinations of printed dots of different diameter by means of energy modulation

Definitions

  • the invention relates to an ink writing device for displaying characters and / or graphic patterns of different font quality according to the preamble of claim 1.
  • an ink writing device To display characters or graphic patterns with an ink writing device, it is known to spray individual ink droplets from one or more nozzles of an ink print head against a recording medium.
  • an ink writing device as described, for example, in Siemens magazine 51, 1977, pages 219 to 221, the droplet is ejected in such a way that the drive elements assigned to the individual nozzles of the ink print head, hereinafter referred to as transducers, are individual, that is to say depending on them whether droplet ejection should take place or not be controlled by a control circuit.
  • transducers the drive elements assigned to the individual nozzles of the ink print head
  • any desired character can be represented on the recording medium in this way by a grid-like arrangement of ink dots.
  • the characters or patterns shown are therefore always in a grid, the column and line spacing of which is determined by the movement of the write head in relation to the record carrier and by the spray frequency of the ink print head.
  • Each ejected ink droplet has the same size, ie the ink volume of each ejected ink droplet chens is constant. This means that the diameters of the ink dots applied to the recording medium also have a constant diameter.
  • the signals for controlling the piezo transducers are formed in a control circuit as a function of the information about the character to be displayed, which information is taken from a character generator, wherein the grid in which the character is represented in a dot form is also taken into account.
  • an improvement in font quality over standard quality can be achieved by increasing the number of ink droplets ejected to represent a character within the matrix, which is tantamount to reducing the printing speed.
  • the individual points of the matrix are overwritten, so to speak, it being expedient to carry out a feed comprising, for example, half a column spacing.
  • the object of the invention is to provide a possibility for an ink writing device with which, even when displaying characters or patterns with different, different font qualities, there is always a largely closed line of characters or patterns without changing the geometry of the ink print head.
  • One of the main advantages of the invention is that the setting of the font quality for the characters to be displayed, in particular the setting for the display in a draft, a standard or in a fine writing quality can be carried out in a simple manner in the control circuit of the ink writing device, whereby by changing the droplet size, ie by varying the volume of the ink individual droplets in both cases a closed line as well as a sharp contour of the characters shown is guaranteed.
  • Fig. 1 serves to explain the imprint of a character with different font quality according to the prior art, in which the ink droplets each have the same, constant diameter, i.e. have the same and constant volume.
  • This example is based on a matrix with five columns (x-direction) and seven rows (y-direction), which is often used to display characters with matrix printers.
  • the outlet openings of the nozzles of an ink print head which are usually arranged in a nozzle plate D.P., are shown on the left in FIG.
  • the seven outlet nozzles D1 to D7 arranged here as an example and arranged in a vertical row
  • an arrangement with two or more rows of nozzles, which are then expediently offset from one another could also be used.
  • the character “L” is to be printed first in the so-called draft font quality (font quality S1), not all of the cross points of the matrix are used. Rather, both in the column direction (x direction) and in the row direction (y direction) of the matrix, only every second crossing point is printed.
  • the character “L” then has the shape provided with the reference symbol S1.
  • the shape of the character printed with this font quality has the shape provided with the reference character S2.
  • the matrix dots are first printed with standard font quality as in the printing of the character, with the feed in the x direction being simultaneously reduced to half. Then there is an offset in the y direction by half a line spacing with subsequent ejection of ink droplets for the individual columns.
  • the character formed in this way is shown under the reference symbol S3 in FIG. 1.
  • Fig. 2 shows the representation of the character "L” taking into account the teaching of the invention.
  • the size of the ink droplets applied to the recording medium ie the volume of each individual ink droplet, is changed depending on the type of font quality selected.
  • the nozzle plate DP shown on the left in FIG. 3 with the seven outlet openings of the nozzles D1 to D7 corresponds to that shown in FIG. 1 th nozzle plate.
  • To represent the character "L” in draft font quality 51 ink droplets with a relatively large volume of ink are ejected, so that the diameter d1 of the ink dots applied to the recording medium is such that the individual ink dots touch, for example as shown in FIG .
  • the volume of ink ejected with each ink droplet is reduced compared to the design font quality 51.
  • the ink dots applied to the recording medium for this standard font quality have a diameter d2 which is smaller than the diameter d1. In this way, the character "L" provided with the reference symbol 52 is formed.
  • the volume of ink that is ejected with each ink droplet is reduced again.
  • the ink dots applied to the recording medium then each have a diameter d3, which in turn is smaller than the diameter d2. In this way, the character "L" provided with the reference symbol S3 in FIG. 3 is produced.
  • the lines of the character shown form a closed form in all three font qualities, and that, in addition, the outer contours of the characters are sharper even when the ink dots overlap on the recording medium due to the reduction in the diameter of the individual ink droplets. Overall, the visual impression is significantly improved with each of the selected font qualities.
  • the ink writing device consists of the actual ink print head K, which is, for example, a plastic body which contains a plurality of ink channels which point in the direction of the recording medium P end at the nozzle plate DP.
  • a transducer (not shown here) is assigned to each ink channel and can be controlled in pulses by means of an electronic control ST. Depending on a drive pulse, the transducer is deformed, which leads to the ejection of a single droplet of ink.
  • the control pulses are formed in accordance with the signals which are emitted by a character generator ZG.
  • the control circuit ST also has the input signals S1, S2 and S3 available, which are output in accordance with the selected font quality.
  • the signals S1, S2 and S3 can be input, for example, by means of manually operated switches.
  • the matrix pattern corresponding to the corresponding font quality is defined in the control circuit ST and the activation of the transducers is determined according to the selected matrix pattern.
  • the signals for the movement of the ink print head K and the recording medium P are also emitted via the control circuit ST.
  • two drive devices namely a first motor MI for moving the ink print head K and a second motor M2 for moving the recording medium P.
  • the ink print head is moved line by line, that is to say horizontally, along the line over the recording medium P via the first motor M1.
  • the second motor M2 is used for line-by-line transport of the recording medium P.
  • the motor M2 also takes over the transport offset by half a line spacing of the record carrier for the representation of a character in visual lettering quality.

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Ink Jet (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
EP84115424A 1984-04-27 1984-12-14 Dispositif d'enregistrement par encre pour obtenir des caractères de qualité variable Expired EP0159402B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3415787 1984-04-27
DE3415787 1984-04-27

Publications (2)

Publication Number Publication Date
EP0159402A1 true EP0159402A1 (fr) 1985-10-30
EP0159402B1 EP0159402B1 (fr) 1989-03-01

Family

ID=6234546

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84115424A Expired EP0159402B1 (fr) 1984-04-27 1984-12-14 Dispositif d'enregistrement par encre pour obtenir des caractères de qualité variable

Country Status (3)

Country Link
EP (1) EP0159402B1 (fr)
JP (1) JPS60239249A (fr)
DE (1) DE3476860D1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988006524A1 (fr) * 1987-02-27 1988-09-07 Siemens Aktiengesellschaft Procede et agencement de memorisation de signes permettant de reduire le nombre de signes redondants dans des imprimantes matricielles a passage multiples
US4803500A (en) * 1986-07-04 1989-02-07 Siemens Aktiengesellschaft Ink printer means comprising interchangeable ink heads
DE4001879A1 (de) * 1989-01-27 1990-08-02 Hitachi Koki Kk Rasterdrucker mit einstellbarer druckdichte
DE4012355A1 (de) * 1989-04-28 1990-10-31 Siemens Ag Steuerverfahren fuer einen schreibkopf zum aufbringen von beschriftungen, insbesondere einen laserschreibkopf
EP0396855A1 (fr) * 1989-02-08 1990-11-14 Canon Kabushiki Kaisha Appareil d'enregistrement à jet liquide et procédé
DE4004543A1 (de) * 1990-02-14 1991-08-22 Siemens Ag Verfahren zum bedrucken von folien mittels tintenschreibeinrichtungen
EP0588616A1 (fr) * 1992-09-18 1994-03-23 Canon Kabushiki Kaisha Appareil d'enregistrement
EP0816103A2 (fr) * 1996-07-01 1998-01-07 Xerox Corporation Méthode d'impression à encre liquide
EP0916494A3 (fr) * 1997-11-17 2000-07-05 Canon Kabushiki Kaisha Impression à plusieurs têtes à différentes résolutions
WO2012064476A1 (fr) * 2010-11-11 2012-05-18 Eastman Kodak Company Système d'impression à jet d'encre continu à résolutions multiples
EP1294578B2 (fr) † 2000-06-26 2018-10-17 Interglarion Limited Procede permettant de realiser des elements structurels ayant une apparence de surface predeterminee, notamment des plaques frontales d'elements de cuisine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0645244B2 (ja) * 1987-11-04 1994-06-15 シャープ株式会社 インクジェットプリンタの印字方法
JPH02235759A (ja) * 1989-03-10 1990-09-18 Canon Inc インクジェット記録装置
EP0491961B1 (fr) * 1990-07-10 1995-12-20 Fujitsu Limited Tete d'impression

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4216480A (en) * 1978-11-13 1980-08-05 International Business Machines Corporation Multiple speed ink jet printer
DE3012552A1 (de) * 1979-04-02 1980-10-09 Canon Kk Elektronische aufzeichnungseinrichtung
GB2050252A (en) * 1979-04-02 1981-01-07 Canon Kk Droplet generating method and apparatus therefor
DE3009333A1 (de) * 1980-03-11 1981-09-17 Siemens AG, 1000 Berlin und 8000 München Tintendruckanordnung zum darstellen von halbtonbildern
US4302761A (en) * 1976-09-30 1981-11-24 Sharp Kabushiki Kaisha Ink jet system printer of the charge amplitude controlling type capable of printing different size characters

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5413339A (en) * 1977-06-30 1979-01-31 Sharp Corp Ink jet printer
JPS54158232A (en) * 1978-06-05 1979-12-13 Oki Electric Ind Co Ltd Multi-nozzle ink jet printer of variable resolution
JPS5574883A (en) * 1978-12-04 1980-06-05 Hitachi Ltd Inject printer
JPS55139270A (en) * 1979-04-19 1980-10-30 Mielke Klaus Ink injection type printer
JPS56126172A (en) * 1980-03-10 1981-10-02 Hitachi Ltd Liquid drop injector

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4302761A (en) * 1976-09-30 1981-11-24 Sharp Kabushiki Kaisha Ink jet system printer of the charge amplitude controlling type capable of printing different size characters
US4216480A (en) * 1978-11-13 1980-08-05 International Business Machines Corporation Multiple speed ink jet printer
DE3012552A1 (de) * 1979-04-02 1980-10-09 Canon Kk Elektronische aufzeichnungseinrichtung
GB2050252A (en) * 1979-04-02 1981-01-07 Canon Kk Droplet generating method and apparatus therefor
US4353079A (en) * 1979-04-02 1982-10-05 Canon Kabushiki Kaisha Electronic device having a variable density thermal ink jet recorder
DE3009333A1 (de) * 1980-03-11 1981-09-17 Siemens AG, 1000 Berlin und 8000 München Tintendruckanordnung zum darstellen von halbtonbildern

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IBM TECHNICAL DISCLOSURE BULLETIN, Band 24, Nr. 8, Januar 1982, Seite 4181, Armonk, US; J.R. BERTSCHY u.a.: "Ink jet printing method" *

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4803500A (en) * 1986-07-04 1989-02-07 Siemens Aktiengesellschaft Ink printer means comprising interchangeable ink heads
WO1988006524A1 (fr) * 1987-02-27 1988-09-07 Siemens Aktiengesellschaft Procede et agencement de memorisation de signes permettant de reduire le nombre de signes redondants dans des imprimantes matricielles a passage multiples
US5117371A (en) * 1987-02-27 1992-05-26 Franz Kristen Character storage process and arrangement for reducing the redundancy of characters for matrix printers with multipass printing
DE4001879A1 (de) * 1989-01-27 1990-08-02 Hitachi Koki Kk Rasterdrucker mit einstellbarer druckdichte
EP0396855A1 (fr) * 1989-02-08 1990-11-14 Canon Kabushiki Kaisha Appareil d'enregistrement à jet liquide et procédé
US5132702A (en) * 1989-02-08 1992-07-21 Canon Kabushiki Kaisha Liquid jet recording apparatus and method
DE4012355A1 (de) * 1989-04-28 1990-10-31 Siemens Ag Steuerverfahren fuer einen schreibkopf zum aufbringen von beschriftungen, insbesondere einen laserschreibkopf
DE4004543A1 (de) * 1990-02-14 1991-08-22 Siemens Ag Verfahren zum bedrucken von folien mittels tintenschreibeinrichtungen
EP0588616A1 (fr) * 1992-09-18 1994-03-23 Canon Kabushiki Kaisha Appareil d'enregistrement
US6065830A (en) * 1992-09-18 2000-05-23 Canon Kabushiki Kaisha Recording apparatus for recording at different recording speeds
CN1071198C (zh) * 1992-09-18 2001-09-19 佳能株式会社 打印装置
US6575568B1 (en) 1992-09-18 2003-06-10 Canon Kabushiki Kaisha Recording apparatus
EP0816103A2 (fr) * 1996-07-01 1998-01-07 Xerox Corporation Méthode d'impression à encre liquide
EP0816103A3 (fr) * 1996-07-01 1999-06-09 Xerox Corporation Méthode d'impression à encre liquide
US6264298B1 (en) 1996-07-01 2001-07-24 Xerox Corporation High frequency shingled multiple drop per pixel ink overprinting method
EP0916494A3 (fr) * 1997-11-17 2000-07-05 Canon Kabushiki Kaisha Impression à plusieurs têtes à différentes résolutions
US6359701B1 (en) 1997-11-17 2002-03-19 Canon Kabushiki Kaisha Multi-head printing with differing resolutions
EP1294578B2 (fr) † 2000-06-26 2018-10-17 Interglarion Limited Procede permettant de realiser des elements structurels ayant une apparence de surface predeterminee, notamment des plaques frontales d'elements de cuisine
WO2012064476A1 (fr) * 2010-11-11 2012-05-18 Eastman Kodak Company Système d'impression à jet d'encre continu à résolutions multiples

Also Published As

Publication number Publication date
EP0159402B1 (fr) 1989-03-01
DE3476860D1 (en) 1989-04-06
JPS60239249A (ja) 1985-11-28

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