EP0083876A2 - Farbstrahlanordnung - Google Patents

Farbstrahlanordnung Download PDF

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Publication number
EP0083876A2
EP0083876A2 EP82307016A EP82307016A EP0083876A2 EP 0083876 A2 EP0083876 A2 EP 0083876A2 EP 82307016 A EP82307016 A EP 82307016A EP 82307016 A EP82307016 A EP 82307016A EP 0083876 A2 EP0083876 A2 EP 0083876A2
Authority
EP
European Patent Office
Prior art keywords
ink jet
transducers
jet array
compliant
array 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.)
Ceased
Application number
EP82307016A
Other languages
English (en)
French (fr)
Other versions
EP0083876A3 (de
Inventor
Thomas William De Young
John Atwater Mccormick
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.)
ExxonMobil Technology and Engineering Co
Original Assignee
Exxon Research and Engineering Co
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 Exxon Research and Engineering Co filed Critical Exxon Research and Engineering Co
Publication of EP0083876A2 publication Critical patent/EP0083876A2/de
Publication of EP0083876A3 publication Critical patent/EP0083876A3/de
Ceased 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
    • B41J2/005—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
    • B41J2/14201—Structure of print heads with piezoelectric elements
    • 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
    • B41J2002/14387—Front shooter

Definitions

  • This invention relates to an ink jet array.
  • an ink jet array characterised in that it comprises a plurality of chambers having ink jet droplet ejection orifices therein, a plurality of elongate transducers respectively coupled to said chambers for ejecting ink from said orifices in response to energisation thereof, and supporting means for said transducers comprising a rigid portion and a compliant clamping portion between said rigid portion and said transducers in an area along the axis of elongation of the transducers.
  • the compliant clamping portion may comprise an elastomeric material. Silicone rubber has been found to be particularly suitable.
  • the ink jet array may further comprise compliant electrical connections to the transducers.
  • the electrical connections may comprise flexible wires or a flexible printed circuit.
  • the compliant clamping means may substantially surround a transverse cross-section of the transducers.
  • the compliant clamping portion may only partially surround a transverse cross-section of the transducers.
  • an ink jet apparatus comprises a plurality of chambers 200 having orifices 202 and an orifice plate 218 for ejecting droplets of ink in response to the state of energization of the transducers 204.
  • the transducers 204 which are rectangular in cross-section transverse to the axis of elongation expand and contract along the axis of elongation as depicted by the arrowheads shown in Fig. la.
  • coupling means 206 including a foot 207, a viscoelastic material 208 juxtaposed to the foot 207 and a diaphragm 210 which is preloaded to a position best shown in Fig. 1a.
  • the opening 214 is located in a restrictor plate 216 best shown in Fig. 2.
  • the reservoir 212 is formed by a concave region in a chamber plate 220 which is covered by the restrictor plate 216 so as to form an acute angle along one side of the reservoir 212 leading to the inlet 214.
  • a feeder input tube 223 communicates with the reservoir 212 at one end thereof as shown in Fig. 1.
  • a heater assembly 225 is also shown in Fig. 1.
  • Fig 1 discloses a transducer support means including a plate 226 and a plate 228.
  • the plate 226 of the transducer support means includes bearing means in the form of a hole 224 which receives the foot 207 attached to an extremity of the transducer 204. It will be appreciated that the foot 207 is free to move longitudinally within the hole 224 thereby permitting longitudinal motion of the transducer along the axis of elongation of the transducer while substantially preventing lateral motion of the transducer.
  • Mounting means for the transducer 204 provided by the plate 228 includes slots 232 best shown in Fig. 2.
  • Compliant mounting means 230 as shown in Figs. 21 and 3 clamp the transducers 204 adjacent the extremities of the transducers 204 remote from the chambers 200. It will be appreciated that the compliant mounting means 230 provides a shear bond with the transducer 204.
  • the compliant mounting means 230 provide a sufficient clamping action with respect to the transducers 204 so as to substantially prevent any longitudinal motion of the transducers along the axis of elongation at the compliant clamping means 230 such that expansion and contraction of the transducer 204 is translated along the transducer 204 and into the movement of the foot 207 through the bearing holes 224 in the plate 226.
  • the stiffness (which is low) of the compliant mounting means 230 is nevertheless sufficient in the direction of elongation of the transducers 204 so as to achieve substantial movement of the transducer extremity adjacent the foot 207 in the direction of expansion and contraction.
  • the low mechanical stiffness minimises the reaction force that one transducer 204 transmits laterally to other transducers 204 in the array when driven or energised.
  • the plate 228 includes a recessed area 229 shown in Fig. 1 below the slots 232 which is spaced from the transducers 204. Thus, there is no contact along the area 229. Moreover, it will be appreciated that portions of the plate 228 including the slots 232 in conjunction with the area 229 and the portion of the plate 226 extending toward the holes 224 forms a C-shape cross-section designated with broken lines identified with the character C where the region 229 forms the center of the C. Note that the space between the region 229 and the transducer permits the transducer to have a substantially larger dimension than the foot 207 while still avoiding contact with the plate 228.
  • the foot 207 extends sufficiently far upwardly toward the slots 232 so as to assure that the transducer 204 may expand and contract without contacting any portion of the plate 226.
  • the transducer 204 may be rectangular in cross-section having a substantially greater dimension in the direction shown in the plane of Fig. 1 as compared with the direction shown in the plane of Fig. 2.
  • the overall length of the longitudinal bearing surface represented by the hole 224 in the direction of the axis of elongation of the transducer 204 is substantially less than the overall length of the transducer 204 along that axis.
  • the overall length of the bearing surface 224 along the axis is less than twice the maximum cross- sectional dimension of the transducer as also shown in Fig. 1.
  • the compliant material 230 surround all four sides of the transducers 204 and the slots 232. However, it will be appreciated that the compliant material 230 need not surround all four sides. In the embodiment as shown in Fig. 4, the compliant material 330 is located between a single side of the transducers 204 in one wall of the slots 232. It will be appreciated that any number of walls of the transducers 204 may be surrounded by the compliant material. Therefore, it will be appreciated that regardless of the amount of compliant material utilized to clamp the transducers 204 in place, the magnitude of the mechanical disturbance from one transducer to another is substantially minimized. As a consequence, the erroneous ejection of a droplet from a neighboring channel or ink jet chamber is minimized.
  • the wire leads 240 and 242 are connected to pins 250 extending into a planar insulator 244 extending across the top of the plate 228. Each of the pins 250 is capable of coupling an electrical signal to a particular transducer 204 for selectively ejecting a droplet on demand.
  • the flexible wire leads 242 are connected to a bus 248 which in turn is connected to ground as shown in Fig. 2.
  • the compliant electrical connection to the transducer 204 minimizes the possibility of any mechanical disturbances being transmitted from one channel or one chamber to another channel or chamber by means of the electrical connection. Therefore, compliance is provided in both the mechanical mounting through means of the compliant material 230 as well as the electrical connection by means of the flexible or compliant leads 240 and 242. It will be appreciated that various types of electrical connections may be made at the electrodes 236 and 238 as well as at the pins 250 as shown in Figs. 2, 3 and 4, e.g., solder. The same compliant electrical connection is achieved in the embodiment of Fig. 4 utilizing flexible wire leads 240 and 242.
  • a flexible printed circuit board having a flexible substrate 300 is unsecured and free to move with respect to the top of the plate 228.
  • the substrate 300 includes a series of slots 302 which generally correspond and are aligned with the slots 232 in the plate 228 which are filled with the compliant material 230.
  • the printed circuit board also includes planar conductive portions 304 mounted on the substrate 300 which are coupled to the electrodes 236 of the transducers 204 by solder points 308. These planar conductive members 304 are selectively energized so as to produce drops on demand from the various chambers associated with the ink jets.
  • Additional planar conductive members 306 are connected to the electrodes 238 and a flexible ground bus bar 248 by solder points 308 to complete the electrical connection between the planar conductive members 304 and 306 and the electrodes 236 and 238.
  • Other techniques may be employed to minimize cross-talk including the slitting of the substrate 300 between transducers. It may also be desirable to employ other conductive patterns so as to permit a planar ground bus bar to be utilized.
  • the compliant clamping material may comprise a variety of elastomeric materials.
  • silicone rubber has been found to be particularly suitable for use.
  • Other elastomeric materials suitable for use include latex and Neoprene.
  • the electrical coupling may comprise wire leads or a flexible printed circuit board.
  • flexible leads having a lesser diameter than the thickness of the transducers 204 (e.g., less than .25 mm) have been found to provide the necessary compliance.
  • the thickness of the flexible circuit board substrate 300 should also be less than the thickness of the transducers 204 (e.g., less than .25 mm).

Landscapes

  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
EP82307016A 1982-01-04 1982-12-31 Farbstrahlanordnung Ceased EP0083876A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US33660082A 1982-01-04 1982-01-04
US336600 1982-01-04

Publications (2)

Publication Number Publication Date
EP0083876A2 true EP0083876A2 (de) 1983-07-20
EP0083876A3 EP0083876A3 (de) 1984-08-29

Family

ID=23316833

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82307016A Ceased EP0083876A3 (de) 1982-01-04 1982-12-31 Farbstrahlanordnung

Country Status (3)

Country Link
EP (1) EP0083876A3 (de)
JP (1) JPS58119871A (de)
CA (1) CA1210989A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994026520A1 (en) * 1993-05-10 1994-11-24 Compaq Computer Corporation Differential drive system for an ink jet printhead

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3041952B2 (ja) * 1990-02-23 2000-05-15 セイコーエプソン株式会社 インクジェット式記録ヘッド、圧電振動体、及びこれらの製造方法
US6186619B1 (en) 1990-02-23 2001-02-13 Seiko Epson Corporation Drop-on-demand ink-jet printing head
EP0795404B1 (de) * 1991-12-26 2005-06-08 Seiko Epson Corporation Tintenstrahldruckkopf
US5764257A (en) 1991-12-26 1998-06-09 Seiko Epson Corporation Ink jet recording head
JP4607201B2 (ja) * 2008-03-19 2011-01-05 クラスターテクノロジー株式会社 液滴吐出装置及びその製造方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2397883A1 (fr) * 1977-07-18 1979-02-16 Mead Corp Tete d'impression par jets d'encre
GB2050949A (en) * 1979-06-01 1981-01-14 Xerox Corp Pulsed liquid droplet ejecting apparatus
FR2498988A1 (fr) * 1981-01-30 1982-08-06 Exxon Research Engineering Co Appareil a jet d'encre et ensemble de jets d'encre

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5519523A (en) * 1978-07-28 1980-02-12 Canon Inc Recording device
DE3007189A1 (de) * 1979-04-25 1980-11-06 Xerox Corp Mit druckimpulsen arbeitende vorrichtung zur erzeugung von fluessigkeitstroepfchen
JPS55166653U (de) * 1979-05-21 1980-12-01

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2397883A1 (fr) * 1977-07-18 1979-02-16 Mead Corp Tete d'impression par jets d'encre
GB2050949A (en) * 1979-06-01 1981-01-14 Xerox Corp Pulsed liquid droplet ejecting apparatus
FR2498988A1 (fr) * 1981-01-30 1982-08-06 Exxon Research Engineering Co Appareil a jet d'encre et ensemble de jets d'encre

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994026520A1 (en) * 1993-05-10 1994-11-24 Compaq Computer Corporation Differential drive system for an ink jet printhead

Also Published As

Publication number Publication date
JPS58119871A (ja) 1983-07-16
CA1210989A (en) 1986-09-09
JPH0431867B2 (de) 1992-05-27
EP0083876A3 (de) 1984-08-29

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Inventor name: DE YOUNG, THOMAS WILLIAM

Inventor name: MCCORMICK, JOHN ATWATER