GB1448293A - Signal-controlled system for ejecting liquid drops from a nozzle - Google Patents

Signal-controlled system for ejecting liquid drops from a nozzle

Info

Publication number
GB1448293A
GB1448293A GB543974A GB543974A GB1448293A GB 1448293 A GB1448293 A GB 1448293A GB 543974 A GB543974 A GB 543974A GB 543974 A GB543974 A GB 543974A GB 1448293 A GB1448293 A GB 1448293A
Authority
GB
United Kingdom
Prior art keywords
transducer
conduit
nozzle
pressure waves
feb
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.)
Expired
Application number
GB543974A
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.)
Gould Inc
Original Assignee
Gould Inc
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 Gould Inc filed Critical Gould Inc
Publication of GB1448293A publication Critical patent/GB1448293A/en
Expired 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
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/055—Devices for absorbing or preventing back-pressure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/04—Gramophone pick-ups using a stylus; Recorders using a stylus
    • H04R17/08—Gramophone pick-ups using a stylus; Recorders using a stylus signals being recorded or played back by vibration of a stylus in two orthogonal directions simultaneously

Landscapes

  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Facsimile Heads (AREA)
  • Special Spraying Apparatus (AREA)

Abstract

1448293 Ink jet production GOULD Inc 6 Feb 1974 [7 Feb 1973] 05439/74 Heading B6P Ink jet producing system comprises an electro-acoustic transducer 17 acting on conduit 5 to produce pressure waves in ink 2 which result in drops 13 being formed at nozzle 11. Pressure waves travelling back towards the reservoir 1 are absorbed by means such as a viscoelastic conduit 4 which ensures that no reflected waves pass back to the nozzle 11 and cause undesired drop formation. As shown the transducer 17 is cylindrical with a lead zirconate-lead titanate ceramic tube 20 having electrodes 22, 23 and is radially polarized. The dimensions of the conduit 4 may be determined experimentally by using a second similar but shorter transducer 32 which senses the pressure waves created by the transducer 17 over a range of frequencies applied to it. This produces a graph of the transducer's 32 output against frequency for different conduit constructions, the more even response being preferred.
GB543974A 1973-02-07 1974-02-06 Signal-controlled system for ejecting liquid drops from a nozzle Expired GB1448293A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00330360A US3832579A (en) 1973-02-07 1973-02-07 Pulsed droplet ejecting system

Publications (1)

Publication Number Publication Date
GB1448293A true GB1448293A (en) 1976-09-02

Family

ID=23289421

Family Applications (1)

Application Number Title Priority Date Filing Date
GB543974A Expired GB1448293A (en) 1973-02-07 1974-02-06 Signal-controlled system for ejecting liquid drops from a nozzle

Country Status (8)

Country Link
US (1) US3832579A (en)
JP (1) JPS5432572B2 (en)
AU (1) AU472397B2 (en)
CA (1) CA1000344A (en)
DE (1) DE2405584C3 (en)
FR (1) FR2216029B1 (en)
GB (1) GB1448293A (en)
IT (1) IT1002860B (en)

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Also Published As

Publication number Publication date
IT1002860B (en) 1976-05-20
JPS5432572B2 (en) 1979-10-15
DE2405584B2 (en) 1980-05-14
JPS49118334A (en) 1974-11-12
AU472397B2 (en) 1976-05-20
DE2405584A1 (en) 1974-08-15
FR2216029B1 (en) 1976-11-26
AU6531674A (en) 1975-08-07
US3832579A (en) 1974-08-27
FR2216029A1 (en) 1974-08-30
DE2405584C3 (en) 1981-01-22
CA1000344A (en) 1976-11-23

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19940205