EP0062889B1 - Mit Flüssigkeitströpfchen arbeitendes Schreibgerät - Google Patents

Mit Flüssigkeitströpfchen arbeitendes Schreibgerät Download PDF

Info

Publication number: EP0062889B1
Authority: EP; European Patent Office
Prior art keywords: teeth; comb; nozzles; recording; liquid droplets
Prior art date: 1981-04-08
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

EP82102956A

Other languages

German (de)

English (en)

French (fr)

Other versions

EP0062889A1 (de

Inventor

Kenth Dipl.-Ing. Nilsson

Jan Bolmgren

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.)

Siemens AG

Siemens Elema AB

Original Assignee

Siemens AG

Siemens Elema AB

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.)

1981-04-08

Filing date

1982-04-06

Publication date

1984-09-05

1982-04-06 Application filed by Siemens AG, Siemens Elema AB filed Critical Siemens AG

1982-10-20 Publication of EP0062889A1 publication Critical patent/EP0062889A1/de

1984-09-05 Application granted granted Critical

1984-09-05 Publication of EP0062889B1 publication Critical patent/EP0062889B1/de

Status Expired legal-status Critical Current

Images

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
- B41J2/145—Arrangement thereof
- B41J2/155—Arrangement thereof for line printing
- 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
- B41J2/14282—Structure of print heads with piezoelectric elements of cantilever type
- 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

the invention relates to a writing device working with liquid droplets for the point-by-point recording of analog courses or alphanumeric characters as well as images, whereby there are nozzles arranged in rows for writing the individual points, in front of whose inlet openings contacted piezoelectric transducers are arranged in such a way that writing fluid occurs when the voltage changes at the contact is pushed out of the nozzle and applied to a recording medium arranged in front of the outlet opening of the nozzles, the individual transducers being formed by the teeth of a comb-like piezo plate and the plate material itself being bilaminarly formed from piezoceramic and a carrier material.
Such a writing instrument in which the plate material consists of piezoceramic and metal, is known from DE-OS 2 527 647. Because of the shape of the piezo plate and the plate material, a mechanical coupling is created between the teeth via the common ridge of the teeth. If a tooth is excited by a tension in such a way that it bends, the result is that the neighboring teeth also bend, although not equally strongly, with a certain delay. Due to the mechanical coupling, the more distant teeth are also affected; the excitation of these teeth decreases with the distance to the excited tooth. In the known writing instrument, the comb web of the piezo plate is fastened to a carrier, so that this part of the piezo plate cannot be bent. If the comb of the piezo plate to be clamped to the holder of the writing instrument is slightly bent, the plate can easily break when clamped.
each tooth must be in the rest position before it is actuated. If two adjacent teeth are to be actuated one after the other, the first actuated tooth should not cause the adjacent tooth to vibrate. If this is done, the time interval between the actuation pulses must be made so long that the vibration of the adjacent tooth has subsided. The result is a sharp drop in the maximum write speed.
the invention has for its object to provide a writing instrument of the type mentioned, in which the mechanical coupling between the teeth of the piezo plate is reduced so that the transmission of the coupling forces from an activated tooth to the adjacent teeth is eliminated.
the piezo plate should be so flexible that a break when clamping the back of the comb is avoided.
This object is achieved according to the invention in that, in order to reduce the mechanical coupling between the teeth, the ceramic material in the extension of the interdental spaces is also removed on the comb web via the comb web common to all teeth. Because only the carrier material connects the teeth to one another, the mechanical coupling between the teeth is reduced in such a way that when a tooth is activated, the adjacent teeth are not influenced. Furthermore, the piezo plate is now so flexible that no breakage can occur in the plate when the back of the comb is clamped.
FIG. 3 shows the outer basic structure of a writing instrument.
the record carrier 3 z. B. normal registration paper, drawn in the direction of arrow 4 over a spacer 5 on the side 6 of the housing 7.
the connecting line 8 is guided, which is provided at its free end with a plug 9 for connection to a control device, not shown, which supplies the control signals for recording the desired courses, characters or images.
the side 6 is the side of a carrier 10 which has a number of nozzles 11 arranged in a row next to one another.
rod-shaped transducers 12 made of piezoelectric material are present in the housing 7, which are contacted and arranged in such a way that they spray writing fluid in the form of a droplet from the nozzle 11 with appropriate electrical control.
the piezo comb 14 consisting of the transducers 12 and the comb back 13 is arranged parallel to the plane of the carrier 10.
FIG. 4 shows that the comb-like piezo plate is bilaminar and is formed from a piezoceramic layer 16 and a metal layer 17.
the free end area of the individual transducers 12 is in front of the one individual nozzles 11 of the row of nozzles.
the comb back 13 is screwed to the carrier 10 receiving the row of nozzles with a fastening screw set 15.
ceramic or glass e.g. As aluminum oxide or silicon may be provided.

Landscapes

Particle Formation And Scattering Control In Inkjet Printers (AREA)

EP82102956A 1981-04-08 1982-04-06 Mit Flüssigkeitströpfchen arbeitendes Schreibgerät Expired EP0062889B1 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE3114192		1981-04-08
DE19813114192 DE3114192A1 (de)	1981-04-08	1981-04-08	Mit fluessigkeitstroepfchen arbeitendes schreibgeraet

Publications (2)

Publication Number	Publication Date
EP0062889A1 EP0062889A1 (de)	1982-10-20
EP0062889B1 true EP0062889B1 (de)	1984-09-05

Family

ID=6129680

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP82102956A Expired EP0062889B1 (de)	1981-04-08	1982-04-06	Mit Flüssigkeitströpfchen arbeitendes Schreibgerät

Country Status (5)

Country	Link
US (1)	US4409601A (pt)
EP (1)	EP0062889B1 (pt)
JP (1)	JPS57178767A (pt)
BR (1)	BR8202012A (pt)
DE (2)	DE3114192A1 (pt)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3306101A1 (de) *	1983-02-22	1984-08-23	Siemens AG, 1000 Berlin und 8000 München	Mit fluessigkeitstroepfchen arbeitendes schreibgeraet
DE3317082A1 (de) *	1983-05-10	1984-11-15	Siemens AG, 1000 Berlin und 8000 München	Mit fluessigkeitstroepfchen arbeitendes schreibgeraet
DE3320441A1 (de) *	1983-06-06	1984-12-06	Siemens AG, 1000 Berlin und 8000 München	Mit fluessigkeitstroepfchen arbeitendes schreibgeraet mit an beiden enden starr mit einer duesenplatte verbundenen stabfoermigen piezoelektrischen wandlern
US5000786A (en) *	1987-11-02	1991-03-19	Seiko Epson Corporation	Ink composition and ink jet recording apparatus and method
US4962391A (en) *	1988-04-12	1990-10-09	Seiko Epson Corporation	Ink jet printer head
DE4435914C2 (de) *	1993-10-07	1999-02-25	Seiko Epson Corp	Piezoelektrischer Antrieb für einen Tintenstrahlaufzeichnungskopf und Verfahren zu dessen Herstellung
CH688960A5 (de)	1994-11-24	1998-06-30	Pelikan Produktions Ag	Tropfenerzeuger fuer Mikrotropfen, insbesondere fuer einen Ink-Jet-Printer.
JPH08187848A (ja) *	1995-01-12	1996-07-23	Brother Ind Ltd	積層式圧電素子およびその製造方法
US6270202B1 (en) *	1997-04-24	2001-08-07	Matsushita Electric Industrial Co., Ltd.	Liquid jetting apparatus having a piezoelectric drive element directly bonded to a casing
DE19911399C2 (de) *	1999-03-15	2001-03-01	Joachim Heinzl	Verfahren zum Ansteuern eines Piezo-Druckkopfes und nach diesem Verfahren angesteuerter Piezo-Druckkopf
JP2004055410A (ja) *	2002-07-22	2004-02-19	Advantest Corp	バイモルフスイッチ、バイモルフスイッチ製造方法、電子回路、及び電子回路製造方法
US20140333703A1 (en) *	2013-05-10	2014-11-13	Matthews Resources, Inc.	Cantilevered Micro-Valve and Inkjet Printer Using Said Valve
US11186084B2 (en)	2018-05-11	2021-11-30	Matthews International Corporation	Electrode structures for micro-valves for use in jetting assemblies
KR102791160B1 (ko)	2018-05-11	2025-04-07	매튜 인터내셔널 코포레이션	제팅 조립체에 사용되는 마이크로-밸브를 밀봉하는 시스템 및 방법
US10994535B2 (en)	2018-05-11	2021-05-04	Matthews International Corporation	Systems and methods for controlling operation of micro-valves for use in jetting assemblies
US11794476B2 (en)	2018-05-11	2023-10-24	Matthews International Corporation	Micro-valves for use in jetting assemblies
US11639057B2 (en)	2018-05-11	2023-05-02	Matthews International Corporation	Methods of fabricating micro-valves and jetting assemblies including such micro-valves
BR112022008418A2 (pt)	2019-11-01	2022-07-19	Matthews Int Corp	Sistema de deposição sem contato e dispositivo de interface tátil

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS56548B2 (pt) *	1973-02-03	1981-01-08
DE2361781A1 (de) *	1973-12-12	1975-06-19	Philips Patentverwaltung	Schreibwerk zum schreiben mit fluessiger farbe
DE2527647C3 (de) *	1975-06-20	1981-06-25	Siemens AG, 1000 Berlin und 8000 München	Mit Flüssigkeitströpfchen arbeitendes Schreibgerät
JPS5518276A (en) *	1978-07-27	1980-02-08	Seiko Epson Corp	Liquid injection apparatus

1981
- 1981-04-08 DE DE19813114192 patent/DE3114192A1/de not_active Withdrawn
1982
- 1982-03-25 US US06/361,982 patent/US4409601A/en not_active Expired - Lifetime
- 1982-04-06 EP EP82102956A patent/EP0062889B1/de not_active Expired
- 1982-04-06 DE DE8282102956T patent/DE3260645D1/de not_active Expired
- 1982-04-07 BR BR8202012A patent/BR8202012A/pt unknown
- 1982-04-08 JP JP57058925A patent/JPS57178767A/ja active Pending

Also Published As

Publication number	Publication date
EP0062889A1 (de)	1982-10-20
BR8202012A (pt)	1983-03-15
DE3114192A1 (de)	1982-10-28
DE3260645D1 (en)	1984-10-11
JPS57178767A (en)	1982-11-04
US4409601A (en)	1983-10-11

Publication	Publication Date	Title
EP0062889B1 (de)	1984-09-05	Mit Flüssigkeitströpfchen arbeitendes Schreibgerät
DE2527647C3 (de)	1981-06-25	Mit Flüssigkeitströpfchen arbeitendes Schreibgerät
EP0092229A2 (de)	1983-10-26	Mit Flüssigkeitströpfchen arbeitendes Schreibgerät
DE69129159T2 (de)	1998-07-16	Tintenstrahlkopf
EP0062888B1 (de)	1985-02-13	Mit Flüssigkeitströpfchen arbeitendes Schreibgerät
DE2361781A1 (de)	1975-06-19	Schreibwerk zum schreiben mit fluessiger farbe
EP0128456A2 (de)	1984-12-19	Piezoelektrisch betriebener Schreibkopf
EP0119489A2 (de)	1984-09-26	Mit Flüssigkeitströpfchen arbeitendes Schreibgerät
DE60318772T2 (de)	2009-01-22	Flüssigkeitsstrahlkopf und Flüssigkeitsstrahlvorrichtung
EP0121894B1 (de)	1986-10-15	Piezoelektrisch betriebener Schreibkopf für Tintenmosaikschreibeinrichtungen
DE2532796C2 (de)	1982-12-30	Einrichtung zur Tröpfchenanregung mit Hilfe einer Wanderwellenanregung für einen Tintentröpfchenschreiber
DE69305394T2 (de)	1997-02-27	Auffangvorrichtung für kontinuierlichen Tintenstrahl mit Schirmstruktur
DE69805457T2 (de)	2003-01-16	Tintenstrahlaufzeichnungskopf
EP0062353B1 (de)	1984-08-15	Mit Flüssigkeitströpfchen arbeitendes Schreibgerät
DE69515715T2 (de)	2000-11-23	Farbstrahlaufzeichnungskopf
DE2835567C2 (de)	1984-01-05	Vorrichtung zum Anregen von Flüssigkeitsstrahlen zur Erzielung einer Aufspaltung der Flüssigkeitsstrahlen in Ströme aus regelmäßig geformten Tröpfchen für einen Tintenstrahldruckkopf
DE3147107A1 (de)	1982-07-01	Tintenstrahldruckkopf
EP0131704B1 (de)	1988-09-14	Mit Flüssigkeitströpfchen arbeitendes Schreibgerät
DE3104077A1 (de)	1982-09-09	"schreibkopf fuer tintenstrahldrucker"
DE69207532T2 (de)	1996-07-04	Tintentröpfchenausstossgerät
DE3028404A1 (de)	1982-07-22	Tintenstrahldrucker
EP0142150B1 (de)	1988-05-11	Verfahren und Wandler zum Erhöhen der Auflösung bei einer Tintenmosaikschreibeinrichtung
EP0326804A2 (de)	1989-08-09	Piezoelektrisch betriebener Schreibkopf in Tintenmosaikschreibeinrichtungen
DE3324043C2 (pt)	1988-11-10
DE2637234C2 (de)	1981-10-01	Tintenstrahlschreiber mit Ladungsamplitudensteuerung

Legal Events

Date	Code	Title	Description
1982-08-20	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1982-10-20	AK	Designated contracting states	Designated state(s): BE DE FR GB IT NL SE
1983-03-02	17P	Request for examination filed	Effective date: 19821217
1984-05-18	ITF	It: translation for a ep patent filed
1984-07-07	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1984-09-05	AK	Designated contracting states	Designated state(s): BE DE FR GB IT NL SE
1984-10-11	REF	Corresponds to:	Ref document number: 3260645 Country of ref document: DE Date of ref document: 19841011
1984-11-02	ET	Fr: translation filed
1985-04-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: BE Effective date: 19850430
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1985-07-11	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1985-09-11	26N	No opposition filed
1985-10-31	BERE	Be: lapsed	Owner name: SIEMENS A.G. BERLIN UND MUNCHEN Effective date: 19850406
1991-04-30	ITTA	It: last paid annual fee
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