EP0031421A2 - Drucksystem und Verfahren für Mehrfach-Schreibarten - Google Patents

Drucksystem und Verfahren für Mehrfach-Schreibarten Download PDF

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Publication number
EP0031421A2
EP0031421A2 EP80106694A EP80106694A EP0031421A2 EP 0031421 A2 EP0031421 A2 EP 0031421A2 EP 80106694 A EP80106694 A EP 80106694A EP 80106694 A EP80106694 A EP 80106694A EP 0031421 A2 EP0031421 A2 EP 0031421A2
Authority
EP
European Patent Office
Prior art keywords
printing
array
axis
printing elements
columns
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.)
Withdrawn
Application number
EP80106694A
Other languages
English (en)
French (fr)
Other versions
EP0031421A3 (de
Inventor
Thomas Ashbrook Hoskins
Ta Cheng Ku
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of EP0031421A2 publication Critical patent/EP0031421A2/de
Publication of EP0031421A3 publication Critical patent/EP0031421A3/de
Withdrawn legal-status Critical Current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
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J25/001—Mechanisms for bodily moving print heads or carriages parallel to the paper surface
    • B41J25/003—Mechanisms for bodily moving print heads or carriages parallel to the paper surface for changing the angle between a print element array axis and the printing line, e.g. for dot density changes

Definitions

  • This invention relates to devices for printing data. More particularly, this invention is directed to a technique for providing at least two degrees of printing quality, at different speeds, with a printer utilizing a matrix print head.
  • Patent US -A- 4,031,992 IBM Technical Disclosure Bulletin, "PRINTER TRANSPORT MOTION IMPEDIENT PROTECTION", Vol. 22, No. 6, pages 2433 - 35 (November, 1979);IBM Technical Disclosure Bulletin, “WIRE PRINTER”, Vol. 22, No. 4, pages 1589 - 92 (September, 1979); IBM Technical Disclosure Bulletin, "INK JET HEAD", Vol. 20, No. 2, pages 553 - 54 (July, 1977).
  • a matrix print head includes a plurality of printing elements arranged in one or more straight lines. This line of printing elements is mounted on a head carrier for lateral movement across a print line.
  • a printing medium for example, paper, is positioned so that an images can be selectively imparted from the individual printing elements relative to the paper as the line of printing elements is laterally moved across a desired print line on the paper.
  • FIG. 2 of this article shows a block diagram of the control circuitry necessary to coordinate the energization of the individual printing elements with the lateral position of these elements along the print line so that the appropriate images of the characters are made to appear on the printing medium.
  • the printing technology suggested in this article is that of wire matrix impact printing although the principles of synchronizing the lateral movement of a plurality of printing elements arranged in a line with the activation of these elements for printing is equally applicable to other " printing technologies, for example, ink jet printing or electro- erosion printing.
  • the IBM Technical-Disclosure Bulletin article entitled "INK JET HEAD” shows a configuration in Fig. 1 thereof in which an ink jet print head includes two separate columns of printing elements with the printing elements in one column being staggered relative to the printing elements in the other column. Lateral movement of this arrangement across a print line makes possible the composition of characters having the graphical elements thereof spaced more closely together, for higher print quality, than might be possible with a single column of printing elements.
  • patent US -A- 4,031,992 shows a wire matrix print head that is capable of a slight degree of rotation such that in a first vertical position a character such as a E is printed with its vertically oriented line substantially perpendicular to its horizontally oriented lines. In a second position of the print head the line of printing wires is rotated slightly off of the vertical axis so that the vertically disposed line on the E is slanted such that an angle of less that 90° exists between this vertically disposed line and the bottom horizontal line of the E. No other difference in printing quality appears to be suggested by this patent.
  • the same number of graphical elements are used in constructing each of the versions.
  • the apparent lines forming the characters made up by the dots printed by the wires have no more of a continuous appearance in the slanted E as compared with the other E or vice versa.
  • the print head of a matrix printer is mounted for lateral movement along a desired print line at more than one angle of the printing elements of the head relative to the print line.
  • the angle is chosen to provide a greater spacing between the printing elements of the head relative to the print line than is realized in a final mode of printing wherein the angle is chosen to provide a smaller spacing between printing elements relative to the print line.
  • the printing technologies to which the invention is applicable includes wire matrix printing and ink jet printing as two examples.
  • a single column of printing elements is disposed at a 90° angle relative to the desired printing line.
  • two lines of characters are printed on the paper with a predetermined few of the printing elements of the head being inactive to provide vertical spacing between the printed lines.
  • the vertical spacing between the printing elements is relatively large so that the characters appear to be constructed of a plurality of dots or other shaped graphical elements rather than continuous lines.
  • this fact is not particularly objectionable in the draft mode wherein high printing speed is realized by printing two lines with each single lateral sweep of the head across the paper.
  • a second, or final quality, printing mode the single line of printing elements is rotated to a position at which the entire plurality of printing elements is used to print only one line of characters at a time. All of the printing elements are utilized, including the ones that were inactive in the draft mode to provide space between the two printed lines. This provides much higher quality printing because the character elements of which the printed characters are composed are spaced much more closely together in the vertical axis. This provides a printing quality much more closely associated with that of printing technologies in which characters are composed of continous segments of straight and curved lines.
  • the print head includes two parallel columns of printing elements with the printing elements of one column being staggered relative to the printing elements of the other column.
  • the apparent vertical axis spacing of the graphical elements of which the character is composed appears to be substantially half the spacing of the printing elements in either of the columns.
  • the head can be swept laterally across the page at a higher printing speed by alternating use of adjacent printing elements and allowing speeds that are a multiple of the maximum repetition rate of a single printing element although the printed characters produced are substantially smaller than the characters produced in the final mode with.this head configuration.
  • the print head may be a wire matrix print head, an Ink jet print head, or the printing head of any type printer in which individual printing elements are used to impart a plurality of graphical elements onto a medium to construct images such as alphanumeric characters.
  • the print head 1 is of the wire matrix type although the invention, of course, is not so limited.
  • the individual printing elements of the print head 1 are the print wires 2 through 8. While seven wires are shown for the purposes of illustration in Fig. 1 it will, of course, be understood that any number of wires may be used to produce characters of various size and quality.
  • the spacing between the wires in the vertical axis is shown as dV.
  • Figs 1 - 3 the character "F" is shown for illustrative purposes, as it would appear after lateral movement of the print head along the X axis.
  • the printing elements are activated during this lateral movement of head 1 such that the horizontal spacing dH between printed graphical elements is substantially equal to dV.
  • dH may vary over a wide range and is a function of the character to be printed and is controlled by printing element actuation timing.
  • dH dV is not a requirement.
  • Fig. 2 shows a matrix print head of the type shown in Fig. 1 which is positionable in accordance with this invention to provide either a draft quality or a final quality printing mode.
  • the print head 9 includes the 20 printing elements 10 - 29. In a draft mode position of print head 9 the angle between the printing line axis across which head 9 is moved in a lateral direction as indicated by the arrow X is substantially perpendicular.
  • the 20 printing elements shown the printing of two print lines, each having a height b, are possible during each lateral pass of print head 9 across the printing medium. Eight of the 20 printing elements are used in printing each of these two lines and four of the printing elements are unused in the draft mode position to provide a spacing h between the two print lines.
  • characters may be printed in each of the two lines having the quality of the F shown as an example in the upper left portion of Fig. 2. This is a high speed printing mode, because two lines are printed during each lateral pass of the print head 9.
  • Fig. 2 the print head is shown rotated into a final mode position as indicated by 9A.
  • An example of the F printed in this mode is shown in the upper right portion of Fig. 2, wherein the horizontal distance between printed graphical elements is maintained equal to the new vertical distance between printed graphical elements. It is readily apparent that the quality of the characters obtainable with the print head in this position is far superior to the quality of the characters shown with the print head rotated back through the angle A so that it is perpendicular to the print line in the draft mode position.
  • the print head 9A in the final mode position since the print head 9A in the final mode position only prints one line of characters per lateral pass along the print line the speed at which a page of N lines may be printed in the final mode position is, at most, only one-half the speed at which a page of N lines may be printed in the draft mode position.
  • the speed in the final mode position may be reduced below one-half by the fact that it may be necessary to laterally sweep the print head at a lower rate across the print line depending on the rate at which the printing elements may be activated to print the graphical elements on the paper.
  • a print head 30 is comprised of two parallel columns of printing elements.
  • a first column includes the eight printing elements 31 - 38 and the second column includes the eight printing elements 41 - 48.
  • the second column is downwardly displaced by half the distance between the printing elements so that as the print head 30 is swept laterally across the print line in the X axis the printing elements of the two columns may be sequencially activated to produce lines such as those shown in the F adjacent print head 30.
  • the print head 30 is positioned in the final printing mode when the print head is substantially perpendicular to the print line or X axis.
  • Rotation of the print head through angle B positions the print head, now designated 30A, for printing in the draft mode.
  • pairs of printing elements of different columns are aligned parallel to the print line or X axis so that the apparent distance between the printing elements becomes much greater on the print line than when the print head is in the final mode position.
  • the draft mode position of print head 30A has only eight printing elements useable in this mode.
  • the F printed in the draft mode position is substantially smaller than the F printed in the final mode position.
  • the printing speed can be substantially greater in the draft mode position because the printing elements can be alternately operated such that the apparent repetition rate of the elements is twice as great as if a single column of elements were operated in this manner.
  • Fig. 4 shows a schematically embodiment of a matrix print head 50 mounted on a matrix print head carrier 51.
  • Carrier 51 is slideably moveable along a rail 52 as indicated by the arrow X.
  • the print lines are also printed in the direction indicated by X.
  • Print head 50 is pivotally mounted to carrier 51 at pivot 53.
  • a head pivoting mechanism 54 is rigidly mounted to the head carrier 51 by a suitable structure 55.
  • Mechanism 54 is electromechanically or mechanically operable to engage rod 56 having one end thereof connected at pivot 57 to head 50. Movement of rod 56 relative to mechanism 54 causes a pivoting motion of head 50 about pivot 53 to cause the head 50 to assume various angles, other than that shown, relative to the print line.
  • Fig. 4 shows this arrangement for exemplary purposes only, it being understood that the particular arrangment to pivot the print head for the multiple modes of operation may take a variety of forms each depending on the particular printing technology to which this invention is applied.
  • a printing technique has been shown using a single matrix print head including a plurality of printing elements arranged in one or more straight lines and mounted for lateral movement across a print line at more than one angle.
  • the angle is chosen to provide a greater spacing between printing elements relative to the print line than is realized in the final or higher quality mode.
  • Various embodiments-of the invention have been shown including one embodiment wherein a single column of printing elements is utilized for printing more than one line at a time in the draft mode and a single line at a time in the final mode.
  • a printing element includes a plurality of parallel columns of printing elements with the columns staggered in the vertical axis to increase the density of printable graphical elements on the paper.
  • the print head is rotatable from a final mode position substantially perpendicular to the print line to a draft mode position in which the parallel columns of printing elements are positioned relative to the print line such that one printing element in each column is aligned horizontally relative to a printing element in each of the other columns. In this position a draft mode quality is realizable with a different size print character than that obtained in the final mode position.

Landscapes

  • Ink Jet (AREA)
  • Dot-Matrix Printers And Others (AREA)
EP80106694A 1979-12-26 1980-10-31 Drucksystem und Verfahren für Mehrfach-Schreibarten Withdrawn EP0031421A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10662579A 1979-12-26 1979-12-26
US106625 1979-12-26

Publications (2)

Publication Number Publication Date
EP0031421A2 true EP0031421A2 (de) 1981-07-08
EP0031421A3 EP0031421A3 (de) 1982-09-22

Family

ID=22312424

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80106694A Withdrawn EP0031421A3 (de) 1979-12-26 1980-10-31 Drucksystem und Verfahren für Mehrfach-Schreibarten

Country Status (4)

Country Link
EP (1) EP0031421A3 (de)
JP (1) JPS5693559A (de)
AU (1) AU6410180A (de)
ES (1) ES497028A0 (de)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0098530A2 (de) * 1982-07-08 1984-01-18 Alcatel N.V. Typenscheibendrucker
EP0107502A2 (de) * 1982-10-27 1984-05-02 Royden C. Sanders, Jr. Punktmatrixdrucker mit einer Dichtesteuervorrichtung für die Druckpunkte
FR2540043A1 (fr) * 1983-01-27 1984-08-03 Hoffmann Cyklop Dispositif pour le marquage des objets
EP0159642A2 (de) * 1984-04-16 1985-10-30 Hitachi, Ltd. Thermodruckkopf
US4739415A (en) * 1984-05-01 1988-04-19 Canon Kabushiki Kaisha Image handling system capable of varying the size of a recorded image
US4791437A (en) * 1985-12-23 1988-12-13 Ing. C. Olivetti & C., S.P.A. Multiple nozzle ink jet dot printer
US4794407A (en) * 1986-11-12 1988-12-27 Markpoint System Ab Recording device having rotatable matrix unit and sensor means for detecting relative movement direction, relative speed and rotation angle of matrix column
US4929099A (en) * 1988-01-19 1990-05-29 Qume Corporation Multi-line serial printer
US4941761A (en) * 1988-06-13 1990-07-17 Brother Kogyo Kabushiki Kaisha Printing device capable of low-density printing and high-density printing
US4972270A (en) * 1989-04-17 1990-11-20 Stephen Kurtin Facsimile recorder with acutely mounted staggered array ink jet printhead
EP0408071A2 (de) * 1989-07-13 1991-01-16 Matsushita Electric Industrial Co., Ltd. Hin- und hergehendes Mehrfarbendrucksystem mit spezifizierter Positionierung von Druckköpfen relativ zu einem Druckbogen
US5078521A (en) * 1988-08-05 1992-01-07 Microlys S.P.A. High-speed or high-definition dot matrix printing head
US5347617A (en) * 1990-11-09 1994-09-13 Dataproducts Corporation Printer having a multiple scan line printhead controller
EP0665112A2 (de) * 1989-01-28 1995-08-02 Canon Kabushiki Kaisha Tintenstrahlaufzeichnungsgerät
US5924804A (en) * 1997-07-15 1999-07-20 Brother Kogyo Kabushiki Kaisha Information recording head
US6003969A (en) * 1995-06-07 1999-12-21 Canon Kabushiki Kaisha Matrix printer with canted printing head
US6092887A (en) * 1996-07-22 2000-07-25 Minolta Co., Ltd. Ink-jet printer
US6189991B1 (en) * 1998-08-14 2001-02-20 Eastman Kodak Company Compensating for receiver skew and changing resolution in ink jet printer
US6202550B1 (en) * 1998-12-30 2001-03-20 Eastman Kodak Company Printer and method for printing indicia on a compact disk using a plurality of ink jet or laser rotatable print heads
US6575557B2 (en) * 2000-08-31 2003-06-10 Seiko Instruments Inc. Recording unit and ink jet type recording apparatus equipped with the recording unit
US7156482B2 (en) * 2001-08-28 2007-01-02 Hewlett Packard Development Company, L. P. Printhead-to-platen spacing variation along scan axis due to carriage guide, measured by simple sensor on carriage

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4059182A (en) * 1973-12-20 1977-11-22 U.S. Philips Corporation Mosaic printer
DE2729495A1 (de) * 1976-08-26 1978-03-02 Zentronik Veb K Mosaikdruckkopf
US4153950A (en) * 1978-07-21 1979-05-08 International Business Machines Corp. Data bit assembler
WO1979000627A1 (en) * 1978-02-15 1979-09-06 N Sinoto Printing device
EP0027734A1 (de) * 1979-10-17 1981-04-29 Ing. C. Olivetti & C., S.p.A. Punktmatrixdrucker

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4059182A (en) * 1973-12-20 1977-11-22 U.S. Philips Corporation Mosaic printer
DE2729495A1 (de) * 1976-08-26 1978-03-02 Zentronik Veb K Mosaikdruckkopf
WO1979000627A1 (en) * 1978-02-15 1979-09-06 N Sinoto Printing device
US4153950A (en) * 1978-07-21 1979-05-08 International Business Machines Corp. Data bit assembler
EP0027734A1 (de) * 1979-10-17 1981-04-29 Ing. C. Olivetti & C., S.p.A. Punktmatrixdrucker

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IBM TECHNICAL DISCLOSURE BULLETIN, vol.20, no.12, May 1978, IBM Corp., New York (US) *

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0098530A3 (de) * 1982-07-08 1986-07-09 Alcatel N.V. Typenscheibendrucker
EP0098530A2 (de) * 1982-07-08 1984-01-18 Alcatel N.V. Typenscheibendrucker
EP0107502A2 (de) * 1982-10-27 1984-05-02 Royden C. Sanders, Jr. Punktmatrixdrucker mit einer Dichtesteuervorrichtung für die Druckpunkte
EP0107502A3 (de) * 1982-10-27 1985-08-07 Royden C. Sanders, Jr. Punktmatrixdrucker mit einer Dichtesteuervorrichtung für die Druckpunkte
FR2540043A1 (fr) * 1983-01-27 1984-08-03 Hoffmann Cyklop Dispositif pour le marquage des objets
EP0159642A3 (en) * 1984-04-16 1986-12-30 Hitachi, Ltd. Thermal head
EP0159642A2 (de) * 1984-04-16 1985-10-30 Hitachi, Ltd. Thermodruckkopf
US4739415A (en) * 1984-05-01 1988-04-19 Canon Kabushiki Kaisha Image handling system capable of varying the size of a recorded image
US4791437A (en) * 1985-12-23 1988-12-13 Ing. C. Olivetti & C., S.P.A. Multiple nozzle ink jet dot printer
US4794407A (en) * 1986-11-12 1988-12-27 Markpoint System Ab Recording device having rotatable matrix unit and sensor means for detecting relative movement direction, relative speed and rotation angle of matrix column
US4929099A (en) * 1988-01-19 1990-05-29 Qume Corporation Multi-line serial printer
US4941761A (en) * 1988-06-13 1990-07-17 Brother Kogyo Kabushiki Kaisha Printing device capable of low-density printing and high-density printing
US5078521A (en) * 1988-08-05 1992-01-07 Microlys S.P.A. High-speed or high-definition dot matrix printing head
EP0665113A3 (de) * 1989-01-28 1996-03-06 Canon Kk Tintenstrahlaufzeichnungsgerät.
US5745135A (en) * 1989-01-28 1998-04-28 Canon Kabushiki Kaisha Ink jet recording method and color ink jet recording device for practicing the same
EP0665112A3 (de) * 1989-01-28 1996-03-06 Canon Kk Tintenstrahlaufzeichnungsgerät.
EP0665111A3 (de) * 1989-01-28 1996-02-21 Canon Kk Tintenstrahlaufzeichnungsgerät.
EP0665112A2 (de) * 1989-01-28 1995-08-02 Canon Kabushiki Kaisha Tintenstrahlaufzeichnungsgerät
EP0665113A2 (de) * 1989-01-28 1995-08-02 Canon Kabushiki Kaisha Tintenstrahlaufzeichnungsgerät
US4972270A (en) * 1989-04-17 1990-11-20 Stephen Kurtin Facsimile recorder with acutely mounted staggered array ink jet printhead
EP0408071A2 (de) * 1989-07-13 1991-01-16 Matsushita Electric Industrial Co., Ltd. Hin- und hergehendes Mehrfarbendrucksystem mit spezifizierter Positionierung von Druckköpfen relativ zu einem Druckbogen
EP0408071A3 (en) * 1989-07-13 1991-10-23 Matsushita Electric Industrial Co., Ltd. Reciprocating color printing system
US5347617A (en) * 1990-11-09 1994-09-13 Dataproducts Corporation Printer having a multiple scan line printhead controller
US6003969A (en) * 1995-06-07 1999-12-21 Canon Kabushiki Kaisha Matrix printer with canted printing head
US6092887A (en) * 1996-07-22 2000-07-25 Minolta Co., Ltd. Ink-jet printer
US5924804A (en) * 1997-07-15 1999-07-20 Brother Kogyo Kabushiki Kaisha Information recording head
US6189991B1 (en) * 1998-08-14 2001-02-20 Eastman Kodak Company Compensating for receiver skew and changing resolution in ink jet printer
US6202550B1 (en) * 1998-12-30 2001-03-20 Eastman Kodak Company Printer and method for printing indicia on a compact disk using a plurality of ink jet or laser rotatable print heads
US6575557B2 (en) * 2000-08-31 2003-06-10 Seiko Instruments Inc. Recording unit and ink jet type recording apparatus equipped with the recording unit
US7156482B2 (en) * 2001-08-28 2007-01-02 Hewlett Packard Development Company, L. P. Printhead-to-platen spacing variation along scan axis due to carriage guide, measured by simple sensor on carriage

Also Published As

Publication number Publication date
JPS5693559A (en) 1981-07-29
ES8206286A1 (es) 1982-01-16
ES497028A0 (es) 1982-01-16
EP0031421A3 (de) 1982-09-22
AU6410180A (en) 1981-08-20

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