EP1824683A1 - Agencement symétrique de buses - Google Patents

Agencement symétrique de buses

Info

Publication number
EP1824683A1
EP1824683A1 EP04761161A EP04761161A EP1824683A1 EP 1824683 A1 EP1824683 A1 EP 1824683A1 EP 04761161 A EP04761161 A EP 04761161A EP 04761161 A EP04761161 A EP 04761161A EP 1824683 A1 EP1824683 A1 EP 1824683A1
Authority
EP
European Patent Office
Prior art keywords
rows
circuitry
printhead module
row
module according
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Withdrawn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
EP04761161A
Other languages
German (de)
English (en)
Other versions
EP1824683A4 (fr
Inventor
Kia Silverbrook Research Pty Ltd Silverbrook
Mark Silverbrook Research Pty Ltd JACKSON PULVER
Michael John Silverbrook Research Pty Ltd WEBB
John Robert Silverbrook Research Pty SHEAHAN
Simon R. Silverbrook Research Pty Ltd. WALMSLEY
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.)
Zamtec Ltd
Original Assignee
Silverbrook Research Pty Ltd
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 Silverbrook Research Pty Ltd filed Critical Silverbrook Research Pty Ltd
Publication of EP1824683A1 publication Critical patent/EP1824683A1/fr
Publication of EP1824683A4 publication Critical patent/EP1824683A4/fr
Withdrawn legal-status Critical Current

Links

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
    • B41J2/005—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
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2/14016—Structure of bubble jet print heads
    • B41J2/14072—Electrical connections, e.g. details on electrodes, connecting the chip to the outside...
    • 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
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads

Definitions

  • the present invention relates to the field of printheads.
  • the invention has primarily been developed for use with applicant's inkjet printhead comprising a plurality of printhead modules extending across a pagewidth, and will be described with reference to this application. However, it will be appreciated that the invention can be applied to other printhead arrangements having multiple rows of print nozzles.
  • One of these relates to the provision of drive and control signals to nozzles.
  • One way to do this is to have a CMOS layer in the same substrate as the print nozzles are constructed. This integration saves space and enables relatively short links between drive circuitry and nozzle actuators.
  • each color in a printhead includes an odd and an even row, which are offset across the pagewidth by half the horizontal nozzle pitch.
  • Each nozzle and its drive circuit are arranged, in plan, in a line parallel to the direction of print media travel relative to the printhead.
  • all the nozzle/circuitry pairs in printhead are orientated in the same way. Using odd and even rows offset by half the horizontal nozzle pitch allows dots to be printed more closely together across the page than would be possible if the nozzles and associated drive circuitry had to be positioned side by side in a single row. Dot data to the appropriate row needs to be delayed such that data printed by the two rows ends up aligned correctly on the page.
  • the relative difference in space requirement for the CMOS and nozzles means there is still some wasted area in the printhead. Also, in designs where high-voltage circuitry is disposed adjacent low-voltage circuitry from another row, careful design and spacing is required to avoid interference between the two. It would be desirable to improve space usage in a printhead circuit having multiple rows of print nozzles, or at least to provide a useful alternative to prior art arrangements.
  • the present invention provides a printhead module comprising at least first and second rows of print nozzles that extend along at least part of a pagewidth to be printed, each nozzle including first circuitry of a first type and second circuitry of a second type, such that, in plan view, the first and second circuitry are generally located at opposite ends of the nozzle, wherein the nozzles are orientated such that the respective positions of the first and second circuitry of each nozzle of the first row are mirrored or rotated relative to the respective positions of the first and second circuitry of corresponding nozzles in the second row.
  • the respective positions of the first and second circuitry of each nozzle of the first row are rotated 180 degrees relative to the respective positions of the first and second circuitry of the corresponding nozzles in the second row.
  • first and second circuitry of each nozzle are positioned in a line perpendicular to the pagewidth.
  • the first and second rows of nozzles at least partially interlock.
  • the first circuitry of each nozzle in the first row at least partially interlocks with the first circuitry of at least one adjacent nozzle from the second row.
  • each of at least a majority of nozzles in the first row is paired with a corresponding nozzle in the second row.
  • the printhead module includes a plurality of first rows and second rows, each of the first rows being paired with one of the second rows.
  • first and second rows are configured to print the same color.
  • first and second rows are configured to print the same ink.
  • the first and second rows are coupled to the same ink supply.
  • the printhead further includes a plurality of first rows and second rows, each of the first rows being paired with one of the second rows, wherein the first and second rows in each pair are configured to print the same ink as each other.
  • first and second rows in each pair are coupled to the same ink supply.
  • the first and second rows are configured to share at least one power supply node.
  • the power supply node is an earth.
  • the earth is rated to conduct current on the basis that only one of the first and second rows will be conducting current to earth at any one time.
  • the power supply node is a current supply conduit.
  • the current supply conduit is rated to conduct current on the basis that only one of the first and second rows will be sourcing current via the current supply conduit at any one time.
  • the first and second rows are configured to share at least one global signal.
  • the global signal is a fire signal.
  • the global signal is a clock signal.
  • the present invention provides a printhead module comprising at least first and second rows of print nozzles that extend along at least part of a pagewidth to be printed, each nozzle including first circuitry of a first type and second circuitry of a second type, such that, in plan view, the first and second circuitry are generally located at opposite ends of the nozzle, wherein the nozzles are orientated such that the first circuitry of the nozzles of the first row are closer to the first circuitry of the nozzles of the second row than to the second circuitry of the nozzles of the second row.
  • the respective positions of the first and second circuitry of each nozzle of the first row are rotated 180 degrees relative to the respective positions of the first and second circuitry of the corresponding nozzles in the second row.
  • first and second circuitry of each nozzle are positioned in a line perpendicular to the pagewidth.
  • first and second rows of nozzles at least partially interlock.
  • the first circuitry of each nozzle in the first row at least partially interlocks with the first circuitry of at least one adjacent nozzle from the second row.
  • each of at least a majority of nozzles in the first row is paired with a corresponding nozzle in the second row.
  • the printhead module includes a plurality of first rows and second rows, each of the first rows being paired with one of the second rows.
  • the first and second rows are configured to print the same color.
  • the first and second rows are configured to print the same ink.
  • the first and second rows are coupled to the same ink supply.
  • printhead including a plurality of first rows and second rows, each of the first rows being paired with one of the second rows, wherein the first and second rows in each pair are configured to print the same ink as each other.
  • first and second rows in each pair are coupled to the same ink supply.
  • first and second rows are configured to share at least one power supply node.
  • the power supply node is an earth.
  • the earth is rated to conduct current on the basis that only one of the first and second rows will be conducting current to earth at any one time.
  • the power supply node is a current supply conduit.
  • the current supply conduit is rated to conduct current on the basis that only one of the first and second rows will be sourcing current via the current supply conduit at any one time.
  • the first and second rows are configured to share at least one global signal.
  • the global signal is a fire signal.
  • the global signal is a clock signal.
  • Figure 1 shows schematics of three separate layers that comprise a unit cell (ie, a nozzle) of a printhead;
  • Figure 2 shows a vertical elevation of the three layers of Figure 1 , in their operative relative positions
  • Figure 3 shows a known layout of columns and rows of the unit cells of Figures 1 and 2;
  • Figure 4 shows a layout of columns and rows of the unit cells of Figures 1 and 2, in accordance with the invention.
  • Figure 1 shows the three layers 2, 4, 6 that together make up a unit cell 1 (ie, a nozzle) 1 for a MemjetTM MEMS printhead. Whilst Figure 1 shows three separate layers in plan, it will be appreciated that, in use, the unit cell is manufactured such that the layers are stacked on top of each other, as shown in side elevation in Figure 2. It will also be understood that each of the layers 2, 4, 6 is made up of further sublayers and subcomponents, the details of which are omitted for clarity.
  • the lowest layer 2 contains active CMOS circuits, and is divided into two main regions.
  • the first region contains low voltage CMOS logic circuits 8 that control whether and when the cell 1 ejects ink.
  • the second region contains high voltage CMOS, comprising a large drive transistor 10 that provides the electric current to an actuator (see Figure 2) that ejects the ink when enabled by the control logic.
  • the intermediate layer 4 is made up of CMOS metal layer structures that provide contacts to the MEMs layer 6.
  • the drive transistor 10 connects to a drive contact area 12.
  • a ground contact area 14 provides a return path for the current and lies physically above the control logic region 8.
  • the upper layer 6 is a MEMs layer that includes a MEMs actuator 17.
  • the actuator 17 is connected at one end 16 to the drive transistor 10 through contact area 12, and at the other end 18 to ground contact area 14.
  • the connection through the various layers is best shown in Fig. 2. It will also be noted from Fig. 1 that an ink hole 20 extends through the first and second layers 2, 4 to supply ink to the third layer 6 for expulsion by the actuator.
  • CMOS active layer As shown in Fig. 3, when unit cells (ie, nozzles) 1 are arrayed in rows and columns to form a complete prior art printhead, various constraints apply to abutting cells. For clarity, only the CMOS active layer is shown but the position and orientation of the others layers will be clear to one skilled in the art based on the nozzle layout shown in Fig. 1
  • control logic circuits 8 of horizontally adjacent rows of nozzles 1 generally abut directly, and global control signals are routed through this area so that they are provided to each cell.
  • the ground contact areas (not shown) of horizontally adjacent cells form a continuous metal strip.
  • the vertical spacing of the rows is determined by the spacing constraints that apply to each layer.
  • the critical spacing is between the high voltage area of one cell, and the low voltage area of the cell in the adjacent row.
  • the critical spacing is between the drive contact of one cell, and the ground contact of the cell in the adjacent row.
  • the critical spacing is between the drive terminal of one actuator, and the ground contact of the actuator in the adjacent row
  • Figure 4 shows the preferred embodiment of arranging cells into rows in an array, in which every second row is flipped or mirrored.
  • Reference numerals used in this Figure correspond with the features described earlier for those numerals.
  • pairs of rows can share a common ground contact area. As cells in adjacent rows are never fired simultaneously in the preferred embodiment, this shared ground contact need only be large enough to carry the current for a single row.
  • the ground terminals of the actuators on the MEMs layer can be shared, reducing the size requirement.
  • current can also be supplied to the drive circuits by way of a supply current conduit shared by adjacent rows.
  • alternate rows of nozzles are rotated 180 degrees relative to each other, it will be appreciated that they can also be mirror images of each other. Moreover, the rotation or mirroring need not involve a complete 180 degree rotational offset. Much of the advantage of the invention can be achieved with lesser angles of relative rotation. Also, although the preferred embodiment shows devices that are identical in plan, it will be appreciated that the devices in the rows need not be identical. It need merely be the case that the requirement of at least some of the circuitry of nozzles in adjacent rows is asymmetric, such that space and/or design improvements can be taken advantage of by flipping, mirroring or otherwise rotating the nozzle layouts in adjacent rows.
  • the present invention offers a smaller array size than existing layouts, without affecting the CMOS and MEMs component sizes.

Landscapes

  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Ink Jet (AREA)

Abstract

L'invention concerne un module de tête d'impression comprenant au moins des première et seconde rangées de buses d'impression qui s'étendent le long d'au moins une partie d'une largeur de page à imprimer, chaque buse comprenant des premiers circuits d'un premier type et des seconds circuits d'un second type, de telle sorte que, dans une vue en plan, les premiers et seconds circuits soient situés de manière générale à des extrémités opposées de la buse, où les buses sont orientées de telle sorte que les positions respectives des premiers et seconds circuits de chaque buse de la première rangée soient réfléchis ou tournés par rapport aux positions respectives des premiers et seconds circuits des buses correspondantes dans la seconde rangée.
EP04761161A 2004-08-23 2004-08-23 Agencement symétrique de buses Withdrawn EP1824683A4 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/AU2004/001124 WO2006021018A1 (fr) 2004-08-23 2004-08-23 Agencement symétrique de buses

Publications (2)

Publication Number Publication Date
EP1824683A1 true EP1824683A1 (fr) 2007-08-29
EP1824683A4 EP1824683A4 (fr) 2010-01-06

Family

ID=35967096

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04761161A Withdrawn EP1824683A4 (fr) 2004-08-23 2004-08-23 Agencement symétrique de buses

Country Status (6)

Country Link
EP (1) EP1824683A4 (fr)
JP (1) JP4713587B2 (fr)
CN (1) CN101005951B (fr)
AU (1) AU2004322632B2 (fr)
CA (1) CA2577338C (fr)
WO (1) WO2006021018A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1977605B1 (fr) 2006-01-23 2020-04-15 Telefonaktiebolaget LM Ericsson (publ) Traitement d'image
WO2018097255A1 (fr) * 2016-11-25 2018-05-31 京セラ株式会社 Tête d'évacuation de liquide et dispositif d'enregistrement utilisant ladite tête
CA3126057C (fr) 2019-02-06 2023-08-22 Hewlett-Packard Development Company, L.P. Matrice pour tete d'impression
EP3710276B1 (fr) 2019-02-06 2021-12-08 Hewlett-Packard Development Company, L.P. Matrice pour tête d'impression
CN113543978B (zh) 2019-02-06 2023-06-30 惠普发展公司，有限责任合伙企业 打印头的管芯、打印头和形成打印头的管芯的方法
MX2021009040A (es) 2019-02-06 2021-08-27 Hewlett Packard Development Co Troquel para un cabezal de impresion.

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4999650A (en) * 1989-12-18 1991-03-12 Eastman Kodak Company Bubble jet print head having improved multiplex actuation construction
AUPN623895A0 (en) * 1995-10-30 1995-11-23 Eastman Kodak Company A manufacturing process for lift print heads with nozzle rim heaters
US6234598B1 (en) * 1999-08-30 2001-05-22 Hewlett-Packard Company Shared multiple terminal ground returns for an inkjet printhead
JP2001199074A (ja) * 2000-01-17 2001-07-24 Sony Corp インクジェットプリンタ
AUPQ595900A0 (en) * 2000-03-02 2000-03-23 Silverbrook Research Pty Ltd Modular printhead
DE60126869T2 (de) * 2000-07-11 2007-11-08 Samsung Electronics Co., Ltd., Suwon Tintenstrahldruckkopf des mit Bläschen angetrieben Typs
US6585352B1 (en) * 2000-08-16 2003-07-01 Hewlett-Packard Development Company, L.P. Compact high-performance, high-density ink jet printhead
TW552201B (en) 2001-11-08 2003-09-11 Benq Corp Fluid injection head structure and method thereof
TW538911U (en) * 2002-03-14 2003-06-21 Int United Technology Co Ltd Ink cartridge allowing providing ink to single side heating device
US6817704B2 (en) * 2002-08-20 2004-11-16 Sony Corporation Liquid ejecting device and liquid ejecting method

Also Published As

Publication number Publication date
WO2006021018A1 (fr) 2006-03-02
AU2004322632A1 (en) 2006-03-02
JP2008510635A (ja) 2008-04-10
AU2004322632B2 (en) 2008-07-17
JP4713587B2 (ja) 2011-06-29
CA2577338A1 (fr) 2006-03-02
CN101005951B (zh) 2010-05-26
EP1824683A4 (fr) 2010-01-06
CN101005951A (zh) 2007-07-25
CA2577338C (fr) 2010-12-14

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