EP0636485A1 - Verfahren und Vorrichtung für einen Punktdrucker - Google Patents

Verfahren und Vorrichtung für einen Punktdrucker Download PDF

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Publication number
EP0636485A1
EP0636485A1 EP94401538A EP94401538A EP0636485A1 EP 0636485 A1 EP0636485 A1 EP 0636485A1 EP 94401538 A EP94401538 A EP 94401538A EP 94401538 A EP94401538 A EP 94401538A EP 0636485 A1 EP0636485 A1 EP 0636485A1
Authority
EP
European Patent Office
Prior art keywords
printing
document
displacement
resolution
print head
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Withdrawn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
EP94401538A
Other languages
English (en)
French (fr)
Inventor
Pascal Guiheneuf
Maurice Lemoine
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.)
Nortel Networks France SAS
Original Assignee
Matra Communication SA
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 Matra Communication SA filed Critical Matra Communication SA
Publication of EP0636485A1 publication Critical patent/EP0636485A1/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Withdrawn legal-status Critical Current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
    • 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
    • B41J2/51—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 serial printer type

Definitions

  • the present invention relates to a method and a device for dot printing, which can be applied in particular to facsimile.
  • Dots printing devices comprising a dots printing head, for example an ink jet printing head mounted on a carriage associated with drive members for moving the carriage relative to a document according to two substantially perpendicular directions of movement.
  • a head of this type has a series of print nozzles arranged in a line or a matrix. The print nozzles are spaced from each other and are arranged so that a displacement of the print head in a first direction prints a strip formed of elementary dots emitted by the nozzles of the head which are controlled for printing.
  • the resolution of an ink jet print head is defined by the number of dots printed per unit of length according to the direction considered.
  • Successive bands of dots are produced sequentially by carrying out a relative displacement of the print head and the document in a second direction, for example by advancing the document in a direction perpendicular to the direction of movement of the carriage, the number of bands being determined to scan the desired format of the document.
  • the document advance in the second direction is calculated so that the successive bands are joined, that is to say that the document advance is equal to the product of the distance between nozzles taken in the direction of advance, by the number of nozzles included in the print head in this direction.
  • a slight overlap zone could be created between each printed strip, for example by printing the strips at a reference resolution, that is to say a resolution which would theoretically allow to attach the bands by a corresponding advance, and to ensure a relative displacement of the document and the print head according to a step less than that corresponding to the reference resolution.
  • a reference resolution that is to say a resolution which would theoretically allow to attach the bands by a corresponding advance, and to ensure a relative displacement of the document and the print head according to a step less than that corresponding to the reference resolution.
  • the number of bands produced being determined regardless of the advance of the document, advancing at a step lower than that corresponding to the reference resolution would have the effect of shifting all the successive bands in the same direction, by an increasing amplitude , which would decrease the size of the printed document.
  • a printing method which comprises the steps of printing dots at a resolution lower than the reference resolution while retaining a relative movement of the document and the print head according to a corresponding pitch. at the reference resolution.
  • the decrease in resolution which is associated with a corresponding magnification of the dimension of the elementary points causes a widening of each strip, which is regularly distributed over the whole document and thus ensures a slight overlap of the strips without offset from them. and without any noticeable change in format.
  • a dot printing device equipped with a printing head. associated with displacement members to effect relative displacement of the print head and of a document to be printed in at least one direction of movement, the print head comprising a series of print members spaced apart from one another others in the direction of movement of an effective spacing distance greater than a reference spacing distance, these printing members being made to print dots having an effective dimension greater than a reference dimension, the displacement being effected according to a step corresponding to the reference spacing distance.
  • the ink jet print head 1 is carried by a carriage 2 which moves in a first direction 4 which will be referred to hereinafter as the horizontal direction.
  • the carriage 2 slides on a guide 3 arranged parallel to the horizontal direction.
  • the movement of the carriage 2 on the guide 3 is ensured by drive members (5, 6).
  • these members comprise a belt 6 fixed to the carriage 2 and a motor 5 driving this belt.
  • the document to be printed 8 rests on a support 7 and moves thanks to drive means 9, relative to the print head 1 in a second direction 10 which will be referred to as direction vertical.
  • the drive means 9 comprise two rollers 11 between which the document is pinched.
  • the roller located under the document is equipped with a drive motor 12.
  • Figure 2 is an enlarged schematic representation of the face of the print head which faces the document to be printed.
  • the head 1 has a line of nozzles 13 inclined at an angle A relative to the vertical direction to obtain the desired resolutions in the horizontal and vertical directions.
  • the spacing distance d taken in the vertical direction is the inverse of the resolution taken in this direction. This resolution corresponds to a dimension of the nozzles for producing an impression of elementary stitches joined when adjacent nozzles are simultaneously controlled for printing.
  • a reference resolution for example equal to 7.7 point per millimeter in the vertical direction 10, corresponds to a reference spacing distance, ie 0.1299 millimeter in the example mentioned.
  • the corresponding reference feed of the document will have a reference pitch of 8.31 mm.
  • the vertical resolution of the print head is modified so that it is less than the reference resolution, for example 7.65 points per millimeter, which corresponds to an effective spacing distance d in the vertical direction greater than the reference spacing distance, ie 0.1307 mm in the example cited.
  • FIG. 3 the result of the printing of four successive bands of theoretically contiguous dots is partially illustrated, the left part of the figure illustrating the result obtained with a conventional inkjet printhead, and the part right illustrating the result obtained according to the invention.
  • the printing is supposed to be carried out by means of an ink jet printing head comprising three printing nozzles.
  • the successive bands bear the reference 14 and the specific references 14.1, 14.2, 14.3, and 14.4.
  • the elementary points bear the reference numeral 15 and have been hatched with different inclinations depending on the band to which they belong.
  • the elementary dots 15 are printed by a print head at the reference resolution and the advance of the document to pass from one strip to the other is carried out at a step corresponding to this reference resolution.
  • the successive printed bands 14 are not always perfectly joined, this is reflected for example by the appearance of a fictitious white line 16 between the bands 14.2 and 14.3.
  • the successive strips bear the reference numeral general 18 and the specific references 18.1, 18.2, 18.3 and 18.4.
  • the elementary points bear the reference numeral 17.
  • the elementary points 17 are printed with a printing head with a resolution lower than the reference resolution and have an effective dimension greater than the reference dimension of the points 15.
  • the step of relative displacement of the document and the head remains that corresponding to the reference resolution. This is reflected in the figure by the coincidence of the center line of the strips 14 and 18 illustrated in the figure by a fixed line.
  • the printed bands 18 are wider than the bands 14, which results in a slight overlap 19 between the bands 18.1 and 18.2 d on the one hand, and the bands 18.3 and 18.4 on the other hand, and the disappearance of the fictitious line 16 between the bands 18.2 and 18.3 without general offset of the bands.
  • This widening of the bands results in a very slight overflow of the extreme bands.
  • the resulting enlargement of the format is, however, completely imperceptible due to its extremely small amplitude.
  • the print head has been described with a single line of nozzles, it may include a series of nozzles arranged in a matrix. It is even possible to provide a print head comprising a number of nozzles sufficient to produce a whole strip of elementary dots at a single stroke, the relative movement of the print head and of the document being effected in one direction.

Landscapes

  • Ink Jet (AREA)
  • Dot-Matrix Printers And Others (AREA)
EP94401538A 1993-07-27 1994-07-05 Verfahren und Vorrichtung für einen Punktdrucker Withdrawn EP0636485A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9309233A FR2708233B1 (fr) 1993-07-27 1993-07-27 Procédé et dispositif d'impression par points.
FR9309233 1993-07-27

Publications (1)

Publication Number Publication Date
EP0636485A1 true EP0636485A1 (de) 1995-02-01

Family

ID=9449678

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94401538A Withdrawn EP0636485A1 (de) 1993-07-27 1994-07-05 Verfahren und Vorrichtung für einen Punktdrucker

Country Status (3)

Country Link
EP (1) EP0636485A1 (de)
JP (1) JPH07148976A (de)
FR (1) FR2708233B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0832744A2 (de) * 1996-09-30 1998-04-01 Canon Kabushiki Kaisha Tintenstrahldruckvorrichtung und Tintenstrahldruckverfahren
EP0832743A2 (de) * 1996-09-30 1998-04-01 Canon Kabushiki Kaisha Tintenstrahldrucker und Tintenstrahldruckverfahren, Zusatzstück, Tintenstrahlkopf, Verfahren zur Korrektur der Verformung, Tintenstrahlkopfelement und Verfahren zur Reduzierung der Farbenmischung
US6409309B1 (en) * 1995-12-29 2002-06-25 Sony Corporation Recording apparatus having high resolution recording function
EP1392091A2 (de) * 2002-08-20 2004-02-25 Xerox Corporation Verfahren und System zum Drucken von integrierten Schaltungsplänen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57176176A (en) * 1981-04-23 1982-10-29 Hitachi Ltd Printing system
EP0507328A2 (de) * 1991-04-05 1992-10-07 Seiko Epson Corporation Druckverfahren für einen Seriendrucker und Seriendrucker hierfür
DE4141736A1 (de) * 1991-03-28 1993-06-17 Mannesmann Ag Verfahren zum aufzeichnen von informationen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58188661A (ja) * 1982-04-30 1983-11-04 Canon Inc 記録装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57176176A (en) * 1981-04-23 1982-10-29 Hitachi Ltd Printing system
DE4141736A1 (de) * 1991-03-28 1993-06-17 Mannesmann Ag Verfahren zum aufzeichnen von informationen
EP0507328A2 (de) * 1991-04-05 1992-10-07 Seiko Epson Corporation Druckverfahren für einen Seriendrucker und Seriendrucker hierfür

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ANONYMOUS: "All-points addressable printing improvement", IBM TECHNICAL DISCLOSURE BULLETIN, vol. 28, no. 8, January 1986 (1986-01-01), NEW YORK US, pages 3255 - 3256, XP002099003 *
PATENT ABSTRACTS OF JAPAN vol. 7, no. 24 (M - 189)<1169> 29 January 1983 (1983-01-29) *
TARVER, L.E. JR.: "Raster overlap in all-points-adressable printing", IBM TECHNICAL DISCLOSURE BULLETIN, vol. 23, no. 8, January 1981 (1981-01-01), NEW YORK US, pages 3780 - 3783 *

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6409309B1 (en) * 1995-12-29 2002-06-25 Sony Corporation Recording apparatus having high resolution recording function
EP0832744A2 (de) * 1996-09-30 1998-04-01 Canon Kabushiki Kaisha Tintenstrahldruckvorrichtung und Tintenstrahldruckverfahren
EP0832743A2 (de) * 1996-09-30 1998-04-01 Canon Kabushiki Kaisha Tintenstrahldrucker und Tintenstrahldruckverfahren, Zusatzstück, Tintenstrahlkopf, Verfahren zur Korrektur der Verformung, Tintenstrahlkopfelement und Verfahren zur Reduzierung der Farbenmischung
EP0832744A3 (de) * 1996-09-30 1999-01-13 Canon Kabushiki Kaisha Tintenstrahldruckvorrichtung und Tintenstrahldruckverfahren
EP0832743A3 (de) * 1996-09-30 1999-07-07 Canon Kabushiki Kaisha Tintenstrahldrucker und Tintenstrahldruckverfahren, Zusatzstück, Tintenstrahlkopf, Verfahren zur Korrektur der Verformung, Tintenstrahlkopfelement und Verfahren zur Reduzierung der Farbenmischung
US6109727A (en) * 1996-09-30 2000-08-29 Canon Kabushiki Kaisha Ink-jet printer and printing method, auxiliary member, ink-jet head, warp correction method, ink-jet head unit and color-mixture reducing method
US6227647B1 (en) 1996-09-30 2001-05-08 Canon Kabushiki Kaisha Ink-jet print apparatus and method using a pivoting ink-jet recording head
US6505908B1 (en) 1996-09-30 2003-01-14 Canon Kabushiki Kaisha Ink-jet printer and printing method, auxiliary member, ink-jet head, warp correction method, ink-jet head unit and color-mixture reducing method
EP1392091A2 (de) * 2002-08-20 2004-02-25 Xerox Corporation Verfahren und System zum Drucken von integrierten Schaltungsplänen
EP1392091A3 (de) * 2002-08-20 2004-12-01 Xerox Corporation Verfahren und System zum Drucken von integrierten Schaltungsplänen
US6890050B2 (en) 2002-08-20 2005-05-10 Palo Alto Research Center Incorporated Method for the printing of homogeneous electronic material with a multi-ejector print head
US7303244B2 (en) 2002-08-20 2007-12-04 Palo Alto Research Center Incorporated Method for the printing of homogeneous electronic material with a multi-ejector print head
US7549719B2 (en) 2002-08-20 2009-06-23 Palo Alto Research Center Incorporated Method for the printing of homogeneous electronic material with a multi-ejector print head
US7963628B2 (en) 2002-08-20 2011-06-21 Palo Alto Research Center Incorporated Method for the printing of homogeneous electronic material with a multi-ejector print head
US7992958B2 (en) 2002-08-20 2011-08-09 Palo Alto Research Center Incorporated Method for the printing of homogeneous electronic material with a multi-ejector print head
US7997680B2 (en) 2002-08-20 2011-08-16 Palo Alto Research Center Incorporated Method for the printing of homogeneous electronic material with a multi-ejector print head
US8104863B2 (en) 2002-08-20 2012-01-31 Palo Alto Research Center Incorporated Method for the printing of homogeneous electronic material with a multi-ejector print head

Also Published As

Publication number Publication date
FR2708233B1 (fr) 1995-09-01
JPH07148976A (ja) 1995-06-13
FR2708233A1 (fr) 1995-02-03

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