EP0335913A1 - Planar ink printing head in a dual-in-line casing. - Google Patents

Planar ink printing head in a dual-in-line casing.

Info

Publication number
EP0335913A1
EP0335913A1 EP88902108A EP88902108A EP0335913A1 EP 0335913 A1 EP0335913 A1 EP 0335913A1 EP 88902108 A EP88902108 A EP 88902108A EP 88902108 A EP88902108 A EP 88902108A EP 0335913 A1 EP0335913 A1 EP 0335913A1
Authority
EP
European Patent Office
Prior art keywords
ink
sandwich
head
print head
elements
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.)
Granted
Application number
EP88902108A
Other languages
German (de)
French (fr)
Other versions
EP0335913B1 (en
Inventor
Erich Kattner
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
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0335913A1 publication Critical patent/EP0335913A1/en
Application granted granted Critical
Publication of EP0335913B1 publication Critical patent/EP0335913B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B41J2/16—Production of nozzles
    • B41J2/1621—Manufacturing processes
    • B41J2/1623—Manufacturing processes bonding and adhesion
    • 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
    • B41J2/14233—Structure of print heads with piezoelectric elements of film type, deformed by bending and disposed on a diaphragm
    • 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
    • B41J2/16—Production of nozzles
    • B41J2/1607—Production of print heads with piezoelectric elements
    • B41J2/161—Production of print heads with piezoelectric elements of film type, deformed by bending and disposed on a diaphragm
    • 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
    • B41J2/16—Production of nozzles
    • B41J2/1621—Manufacturing processes
    • B41J2/1626—Manufacturing processes etching
    • 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
    • B41J2/16—Production of nozzles
    • B41J2/1621—Manufacturing processes
    • B41J2/1632—Manufacturing processes machining
    • 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
    • B41J2/16—Production of nozzles
    • B41J2/1621—Manufacturing processes
    • B41J2/164—Manufacturing processes thin film formation
    • B41J2/1643—Manufacturing processes thin film formation thin film formation by plating
    • 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 an ink print head for an ink print device and a method for its production according to the preambles of claims 1 and 11.
  • DE-OS 32 42 283 describes a multi-layer ink jet print head which has, inter alia, a chamber strip in which a feed channel for the ink and the pressure chambers of the drive elements are incorporated. Furthermore, the chamber strip has a connection piece for the ink supply.
  • the nozzle channels themselves are made by their own
  • Main body of the ink jet print head and open at the other end of the body in closely spaced nozzles of a nozzle plate.
  • the nozzle plate itself is pressed against the base body by a tension spring.
  • the side of the chamber bar into which the pressure chambers and nozzle channels are stamped is covered by a metal membrane that extends across the entire width of the chamber bar.
  • the metal membrane is used to hold the drive elements, which consist of piezo plates.
  • the chamber strip and the connection to the metal membrane are produced in such a way that the conical chambers and throttle channels are first embossed in the chamber bar and then the nozzle channels are drilled.
  • the metal membrane and the chamber strip are then connected by diffusion welding.
  • an ink writing head constructed in this way is difficult to manufacture.
  • the length of the nozzle channels and their course within a bulky base body * have an effect. partly on the font quality or the efficiency of the piezoelectric drive elements.
  • Multilayer ink printheads in planar technology are also known from DE-OS 36 12 846.
  • the print head itself consists of several plate-shaped elements made of rustproof metal e.g. Steel or the like, which are welded together. Inside the print head there are ink channels created by mounting the individual plate-shaped elements and pressure chambers created by corresponding mounting. In the ink printing device, the ink print head is mounted directly on a carriage.
  • the object of the invention is to design an ink print head of the type mentioned at the outset in such a way that on the one hand it can be produced and contacted fully automatically in a simple manner and on the other hand it can be easily attached to the ink print device.
  • a method for manufacturing the ink print head is characterized by claim 11.
  • the ink print head consists of a sandwich ink head consisting of individual plates arranged one above the other, receiving ink channels, drive elements, pressure chambers and the like, which are firmly connected to one another and having a plug housing designed as a dual INLINE housing and receiving the sandwich ink head Connecting legs.
  • An opening in the plug housing enables access to the sandwich ink head in order to be able to electrically balance and contact the sandwich ink head. This contacting and adjustment opening is sealed ink-tight after the adjustment.
  • the ink print head has an ink connection opening for supplying the writing liquid.
  • An ink printhead constructed in this way can be produced automatically and also makes it possible to arrange the printhead over the connection legs of the plug housing in a corresponding plug or soldering holder, which enables easy replacement of the printhead in the event of service.
  • an electrical balancing element is assigned in each drive element of the sandwich ink head, the balancing elements consisting of resistors which can be laser balanced and which are arranged integrated on a plate in the sandwich ink head.
  • the sandwich ink head can have elements for ink heating.
  • the required trimming resistors are arranged on the sandwich ink head and can be automatically compared using lasers, no further trimming of the ink printhead using a special trimming assembly is necessary when changing the printhead.
  • the ink print head itself is constructed in such a way that it has the necessary stability to accommodate cleaning and sealing stations possibly arranged in front of the print head.
  • Lips arranged laterally on the plug housing and projecting beyond the plug housing prevent the connecting legs from being contaminated by ink, and a drip channel formed on the top of the plug housing also ensures that the excess ink is reliably drained off.
  • a resilient adapter connection which lies against the ink supply opening when the ink printhead is installed, ensures simple coupling of the ink printhead to the ink supply system.
  • the ink print head is manufactured in a simple manner by first manufacturing the sandwich ink head using planar technology, then fastening the sandwich ink head in the plug housing itself using welding or spraying technology and then the electrical contacts between the sandwich -Ink head and the connecting legs are closed using automatic bonding machines.
  • an electrical adjustment of the series resistors assigned to each individual drive element is carried out by laser during a test printing operation. After the contact and adjustment opening has been closed, for example by ultrasound welding or gluing, the ink print head is ready for operation and can be fastened in a corresponding connector strip or another receiving device of the printer carriage.
  • FIG. 2 shows a schematic illustration of the ink print head in the working position with the ink adapter connected
  • FIG. 3 shows a schematic illustration of the ink print head with the housing open from below
  • FIG. 5 shows a schematic sectional view of the ink print head.
  • an ink printing head is arranged on a disc carriage, which is written line by line along a recording medium in the writing mode.
  • the ink writing head contains a sandwich ink head constructed in planar technology, which in the exemplary embodiment shown in FIG. 1 is composed of five metal plates.
  • One boundary side of the sandwich ink head forms a diaphragm plate 15 made of nickel with a plate thickness of 0.03 mm on which, according to the number of nozzles (in this case 24), piezo plates 14 with a diameter of approx. 1 mm as drive elements for the Pressure chambers are arranged.
  • a pressure chamber plate 16 adjoins the membrane plate, which is also made of nickel and has a thickness of 0.2 mm corresponding to the desired height of the pressure chambers.
  • the pressure chamber plate 16 there are all pressure chambers 17 of the sandwich head as well as supply structures 18 for the ink supply.
  • the pressure chamber plate 16 is followed by a cover plate 19 of a thickness of approximately 0.1 mm, which contains the mouth areas of the nozzle channel 20 and the ink supply channel 21 of each pressure chamber 17, furthermore recesses 22 are the components of the ink supply.
  • throttling sections 24 with a columnar cross section in the form of slots are arranged and recesses 25 as components of the ink supply.
  • the sandwich ink head is closed by a nozzle plate 26 (thickness 0.1 mm) which is also made of nickel and on which the Düsen ⁇ réelleen 27 are arranged in a configuration corresponding to the desired resolution '. This results in the ink flow in the head indicated by an arrow 51, starting from the ink supply opening 44 to. Nozzle plate 26.-
  • the metal plates After the individual metal plates have been produced by means of pointed, stamping or galvanoplastic, the metal plates are layered one on top of the other and connected to one another by diffusion welding. For this purpose, the plates are pressed together and thus exposed to an elevated temperature under a protective gas or vacuum. The temperature and holding time depend on the respective material of the nozzle plates.
  • Diffusion welding is advantageous in the production of inkjet printheads because a flat metallic connection is produced and no changes in the channel structure due to excess solder or adhesive occur. This also results in a heat-resistant structure and uniform metal can be used for the head.
  • plates made of highly etchable material such as To produce nickel silver, but to silver them to achieve a good welded connection and to weld these silver-plated parts in combination with nickel parts.
  • Diffusion welding is possible at temperatures between 40 and 90% of the absolute melting temperature of the part material. In order to achieve a material pairing with silver that is favorable for diffusion welding, it is sufficient, among other things, to silver-plate at least every second plate in the layer structure.
  • this head which will be referred to as sandwich ink head in the following, which can be carried out fully automatically, the piezoplates 14 are glued onto the membrane plate 15, if not already done beforehand.
  • the sandwich ink head has a resistance array 30 on the membrane plate 15.
  • This resistance array 27 consists of a large number of integrated individual resistors 31 which, when installed, are connected in series with the piezo plates 14 and serve as trimming resistors for the piezo plates 14.
  • the resistance array 30 and the heating element 32 can either be designed and arranged galvanoplastic on the metal plate or else they are manufactured separately and glued to the metal plate or connected to the metal plate by diffusion welding.
  • the resistor array is designed and constructed from a material such that it is adjusted using a laser beam, ie the value of the individual resistors 31 is changed. that can. This is generally done in that a laser beam cuts the individual resistors 31 and thereby change the material cross section and thus the resistance.
  • Plug-in housings are constructed as dual-INLINE housings that are constructed in accordance with DIN 41866 and are made of plastic. They contain a number of connecting legs 33, which are arranged between an upper and lower part of the injection molded plastic housing. The connecting legs 33 are arranged in two rows and face each other in the housing with their connecting lugs. It is also possible to arrange the connecting legs on one side, so that the ink head can be inserted laterally or downwards.
  • the plug housing has on its upper side a receiving opening 35 for receiving the sandwich ink head and a contact and adjustment opening 36 on its lower side, which can be closed by a cover 37.
  • strips 38 are formed which project beyond the actual body of the plug housing and prevent the excess ink emerging from the sandwich ink head from the nozzles from contaminating the connecting legs 33.
  • the upper part 39 of the plug housing itself has a triangular drip edge 40 on its underside, which projects beyond the body 34 of the plug housing and feeds the excess ink 41 to a collecting device, not shown here.
  • the entire ink print head is manufactured in such a way that the prefabricated sandwich ink head is introduced into the receiving opening .35 and is welded there, for example by ultrasound. However, it is also possible to inject the sandwich ink head directly into the plug housing.
  • the Wi are derstandsarray 30 ⁇ and the heating elements 32 and the Piezo ⁇ plate 15 via the contacting and matching opening 36 accessible.
  • the sandwich ink head fixed in the plug housing is fed to a fully automatic bonding device which, in a known manner, also carries the connections of the sandwich ink head including heating elements and resistance array 30 with the corresponding connections of the connecting legs 33 corresponding bond wire 42 connects.
  • the ink printhead is then introduced into a matching machine, not shown here, which fills the ink printhead with ink and uses lasers to match the individual resistors 31 in such a way that a uniform one is obtained
  • Airspeed adjusts the ejected ink droplets.
  • the contacting and sealing opening 36 are closed in an ink-tight manner by welding (ultrasound) the cover 37.
  • the ink print head thus finished can now be latched or soldered in a simple manner, as shown in FIG. 2, in a holding device 43 arranged on the carriage of the ink print device in the form of, for example, a holder or a printed circuit board with corresponding openings.
  • the ink printhead is connected to the ink supply system of the ink printing device via the ink connection opening 44.
  • a resilient ink adapter 45 is arranged on the printer carriage, which adapter consists of a Piece 46 movable mouthpiece 47 exists because, under the action of a spring 48, seals 49 abuts against the ink connection opening 44 and seals them so that ink can be supplied to the ink print head without leakage via the ink channel 50.
  • the drip edge 40 discharges excess ink emerging from the sandwich ink head onto a collecting device, not shown here.

Abstract

Une tête d'impression sandwich à l'encre construite selon une technique planaire est soudée dans un boîtier enfichable Dual-In-Line ayant dans sa partie supérieure une ouverture (35) pour recevoir la tête d'impression sandwich et dans sa partie inférieure une ouverture de réglage et de contact (36) pouvant être fermée de manière étanche à l'encre et un orifice d'alimentation (44) en encre liquide (41). Après l'introduction de la tête d'impression sandwich dans le boîtier Dual-In-Line, on règle électriquement la tête d'impression par l'ouverture de réglage et de contact (36), au moyen d'une rangée de résistances (30) agencée sur la tête d'impression sandwich. L'agencement de la tête d'impression dans le boîtier Dual-In-Line permet de fixer celle-ci de manière interchangeable dans un dispositif de retenue de chariot d'impression. La liaison entre la tête d'impression et le système d'alimentation en encre de l'imprimante est assurée par un adaptateur à ressort.An ink sandwich print head constructed using a planar technique is welded into a Dual-In-Line plug-in housing having in its upper part an opening (35) to receive the sandwich print head and in its lower part a adjustment and contact opening (36) which can be closed in an ink-tight manner and a supply port (44) for liquid ink (41). After the sandwich print head has been inserted into the Dual-In-Line box, the print head is electrically adjusted via the adjustment and contact opening (36) by means of a row of resistors ( 30) arranged on the sandwich printing head. The arrangement of the print head in the Dual-In-Line box allows it to be fixed interchangeably in a print carriage retainer. The connection between the print head and the ink supply system of the printer is ensured by a spring adapter.

Description

Planartintendruckkopf im Dual-INLINE-Gehäuse Layout type print head in a dual INLINE housing
Die Erfindung betrifft einen Tintendruckkopf für eine Tin- tendruckeinrichtung und einem Verfahren zu dessen Herstel- lung gemäß den Oberbegriffen der Patentansprüche 1 und 11.The invention relates to an ink print head for an ink print device and a method for its production according to the preambles of claims 1 and 11.
Tintendruckeinrichtungen mit piezoelektrisch angetriebenen Antriebselementen sind allgemein bekannt und mit Erfolg zur Anwendung gelangt. So wird in der DE-OS 32 42 283 ein mehr- schichtig aufgebauter Tintenstrahldruckkopf beschrieben, der unter anderem eine Kammerleiste aufweist, in der ein Zuführkanal für die Tinte und die Druckkammern der An¬ triebselemente eingearbeitet sind. Weiters weist die Kam¬ merleiste einen Anschlußstutzen für die Tintenversorgung auf. Die Düsenkanäle selbst werden durch einen eigenenInk printing devices with piezoelectrically driven drive elements are generally known and have been used successfully. For example, DE-OS 32 42 283 describes a multi-layer ink jet print head which has, inter alia, a chamber strip in which a feed channel for the ink and the pressure chambers of the drive elements are incorporated. Furthermore, the chamber strip has a connection piece for the ink supply. The nozzle channels themselves are made by their own
Grundkörper des Tintenstrahldruckkopfes geführt und münden am anderen Ende des Grundkörpers in dicht nebeneinander angeordnete Düsen einer Düsenplatte. Die Düsenplatte selbst wird über eine Spannfeder gegen den Grundkörper gedrückt.Main body of the ink jet print head and open at the other end of the body in closely spaced nozzles of a nozzle plate. The nozzle plate itself is pressed against the base body by a tension spring.
Die Seite der Kammerleiste in die die Druckkammern und -die Düsenkanäle eingestanzt sind, ist durch eine Metallmembran abgedeckt die über die gesamte Breite der Kammerleiste reicht. Die Metallmembran dient zur Aufnahme der Antriebs- elemente, die aus Piezoblättchen bestehen.The side of the chamber bar into which the pressure chambers and nozzle channels are stamped is covered by a metal membrane that extends across the entire width of the chamber bar. The metal membrane is used to hold the drive elements, which consist of piezo plates.
Die Herstellung der Kammerleiste und die Verbindung mit der Metallmembran geschieht in der Weise, daß in der Kammerlei¬ ste zunächst die kegelförmigen Kammern und Drosselkanäle eingeprägt und anschließend die Düsenkanäle gebohrt werden. Verbunden werden die Metallmembran und die Kammerleiste dann durch Diffusionsschweißen.The chamber strip and the connection to the metal membrane are produced in such a way that the conical chambers and throttle channels are first embossed in the chamber bar and then the nozzle channels are drilled. The metal membrane and the chamber strip are then connected by diffusion welding.
Durch die Vielzahl der erforderlichen Arbeitsgänge ist ein derartig aufgebauter Tintenschreibkopf schwer herzustellen. Außerdem wirkt sich die Länge der Düsenkanäle und ihr Ver¬ lauf innerhalb eines klobig aufgebauten Grundkörpers* nach- teilig auf die Schriftqualität bzw. den Wirkungsgrad der piezoelektrischen Antriebselemente aus.Due to the multitude of operations required, an ink writing head constructed in this way is difficult to manufacture. In addition, the length of the nozzle channels and their course within a bulky base body * have an effect. partly on the font quality or the efficiency of the piezoelectric drive elements.
Mehrschichtig aufgebaute Tintendruckköpfe in Planartechnik sind weiterhin aus der DE-OS 36 12 846 bekannt. Der Druck¬ kopf selbst besteht dabei aus mehreren plattenförmigen Elementen aus nichtrostendem Metall z.B. Stahl oder der¬ gleichen, die miteinander verschweißt sind. Innerhalb des Druckkopfes befinden sich durch fitzung der einzelnen plat- teήförmigen Elemente erzeugte Tintenkanäle und durch ent¬ sprechende fitzung erzeugte Druckkammern. In der Tinten¬ druckeinrichtung ist der Tintendruckkopf unmittelbar auf einem Wagen montiert.Multilayer ink printheads in planar technology are also known from DE-OS 36 12 846. The print head itself consists of several plate-shaped elements made of rustproof metal e.g. Steel or the like, which are welded together. Inside the print head there are ink channels created by mounting the individual plate-shaped elements and pressure chambers created by corresponding mounting. In the ink printing device, the ink print head is mounted directly on a carriage.
Aufgabe der Erfindung ist es, einen Tintendruckkopf der eingangs genannten Art so auszugestalten, daß er einerseits in einfacher Weise vollautomatisch hergestellt und kontak¬ tiert werden kann, andererseits eine leichte Befestigung in der Tintendruckeinrichtung möglich ist.The object of the invention is to design an ink print head of the type mentioned at the outset in such a way that on the one hand it can be produced and contacted fully automatically in a simple manner and on the other hand it can be easily attached to the ink print device.
Diese Aufgabe wird bei einem Tintendruckkopf der eingangs genannten Art gemäß dem kennzeichnenden Teil des ersten Patentanspruches gelöst. Ein Verfahren zum Herstellen des Tintendruckkopfes ist durch den Anspruch 11 gekennzeichnet.This object is achieved with an ink print head of the type mentioned in the characterizing part of the first claim. A method for manufacturing the ink print head is characterized by claim 11.
Vorteilhafte Ausführungsformen der Erfindung sind in den Unteransprüchen gekennzeichnet.Advantageous embodiments of the invention are characterized in the subclaims.
Gemäß der Erfindung besteht der Tintendruckkopf aus einem Sandwich-Tintenkopf aus einzelnen übereinander angeordne¬ ten, Tintenkanäle, Antriebselemente, Druckkammern und dergleichen aufnehmenden Platten die untereinander fest verbunden sind und einem den Sandwich-Tintenkopf aufnehm¬ enden als Dual-INLINE-Gehäuse ausgebildeten Steckgehäuse mit Anschlußbeinen. Eine Öffnung im Steckgehäuse ermöglicht den Zugang zu dem Sandwich-Tintenkopf, um den Sandwich-Tin¬ tenkopf elektrisch abgleichen und kontaktieren zu können. Diese Kontaktierungs- und Abgleichöffnung wird nach dem Ab¬ gleich tintendicht verschlossen. Weiterhin weist der Tin- tendruckkopf eine Tintenanschlußöffnung zur Zuführung der Schreibflüssigkeit auf.According to the invention, the ink print head consists of a sandwich ink head consisting of individual plates arranged one above the other, receiving ink channels, drive elements, pressure chambers and the like, which are firmly connected to one another and having a plug housing designed as a dual INLINE housing and receiving the sandwich ink head Connecting legs. An opening in the plug housing enables access to the sandwich ink head in order to be able to electrically balance and contact the sandwich ink head. This contacting and adjustment opening is sealed ink-tight after the adjustment. Furthermore, the ink print head has an ink connection opening for supplying the writing liquid.
Ein so aufgebauter Tintendruckkopf läßt sich automatisch herstellen und ermöglicht es außerdem, den Druckkopf über die Anschlußbeine des Steckgehäuses in einer entsprechenden Steck- oder Löthalterung anzuordnen, die ein leichtes Aus- wechseln des Druckkopfes im Servicefalle ermöglicht.An ink printhead constructed in this way can be produced automatically and also makes it possible to arrange the printhead over the connection legs of the plug housing in a corresponding plug or soldering holder, which enables easy replacement of the printhead in the event of service.
Bei einer vorteilhaften Ausführungsform der Erfindung ist in jedem Antriebselement des Sandwich-Tintenkopfes ein elektrisches Abgleichelement zugeordnet, wobei die Abgleich- elemente aus laserabgleichfähigen Widerständen bestehen, die im Sandwich-Tintenkopf auf einer Platte integriert an¬ geordnet sind. Weiterhin kann der Sandwich-Tintenkopf Ele¬ mente zur Tintenheizung aufweisen.In an advantageous embodiment of the invention, an electrical balancing element is assigned in each drive element of the sandwich ink head, the balancing elements consisting of resistors which can be laser balanced and which are arranged integrated on a plate in the sandwich ink head. Furthermore, the sandwich ink head can have elements for ink heating.
Da die erforderlichen Abgleichwiderstände auf dem Sandwich- Tintenkopf angeordnet sind und automatisch über Laser ab¬ geglichen werden können, ist b.eim Druckkopfwechsel kein weiterer Abgleich des Tintendruckkopfes über eine besondere Abgleichbaugruppe notwendig.Since the required trimming resistors are arranged on the sandwich ink head and can be automatically compared using lasers, no further trimming of the ink printhead using a special trimming assembly is necessary when changing the printhead.
Der Tintendruckkopf selbst ist dabei so aufgebaut, daß er die notwendige Stabilität hat, um evtl. vor dem Druckkopf angeordnete Reiπigungs- und Dichtstationen aufzunehmen.The ink print head itself is constructed in such a way that it has the necessary stability to accommodate cleaning and sealing stations possibly arranged in front of the print head.
Am Steckgehäuse seitlich angeordnete, das Steckgehäuse überragende Leisten verhindern ein Verschmutzen der An¬ schlußbeine durch, Tinte, außerdem sorgt eine an Oberseite des Steckgehäuses ausgebildete Tropfkanπe für eine sichere Ableitung der Überschußtinte. Ein federnder Adapteran- schluß, der sich beim Einbau des Tintendruckkopfes an die Tintenzuführöffnung legt, sorgt für eine einfache Koppelung des Tintendruckkopfes mit dem Tintenversorgungssystem. Hergestellt wird der Tintendruckkopf in einfacher Weise da¬ durch, daß zunächst der Sandwich-Tintenkopf in Planartech¬ nik hergestellt wird, dann der Sandwich-Tintenkopf in dem Steckgehäuse selbst in Schweiß-oder Spritztechnik befestigt wird und dann die elektrischen Kontakte zwischen dem Sand- wich-Tintenkopf und den Anschlußbeinen über Bondierautoma- ten geschlossen werden. Nach der mechanischen Herstellung und Füllung des Tintendruckkopfes erfolgt während eines Probedruckbetriebes ein elektrischer Abgleich der jedem einzelnen Antriebselement zugeordneten Vorwiderstände über Laser. Nach Schließen der Kontaktier-und Abgleichöffnung, z.B. durch Ultraschallschweißen oder Kleben ist der Tin¬ tendruckkopf betriebsbereit und kann in eine entsprechende Steckerleiste oder einer anderen Aufnahmevorrichtung des Druckerwagens befestigt werden. Lips arranged laterally on the plug housing and projecting beyond the plug housing prevent the connecting legs from being contaminated by ink, and a drip channel formed on the top of the plug housing also ensures that the excess ink is reliably drained off. A resilient adapter connection, which lies against the ink supply opening when the ink printhead is installed, ensures simple coupling of the ink printhead to the ink supply system. The ink print head is manufactured in a simple manner by first manufacturing the sandwich ink head using planar technology, then fastening the sandwich ink head in the plug housing itself using welding or spraying technology and then the electrical contacts between the sandwich -Ink head and the connecting legs are closed using automatic bonding machines. After the mechanical manufacture and filling of the ink print head, an electrical adjustment of the series resistors assigned to each individual drive element is carried out by laser during a test printing operation. After the contact and adjustment opening has been closed, for example by ultrasound welding or gluing, the ink print head is ready for operation and can be fastened in a corresponding connector strip or another receiving device of the printer carriage.
Ausführungsformen der Erfindung sind in den Zeichnungen dargestellt und werden im folgenden beispielsweise näher beschrieben. Es zeigenEmbodiments of the invention are shown in the drawings and are described in more detail below, for example. Show it
FIG 1 eine schematische Darstellung des Aufbaues des Sandwich-Kopfes,1 shows a schematic representation of the structure of the sandwich head,
FIG 2 eine schematische Darstellung des Tintendruckkopfes in Arbeitslage mit angeschlossenem Tintenadapter,2 shows a schematic illustration of the ink print head in the working position with the ink adapter connected,
FIG 3 eine schematische Darstellung des Tintendruckkopfes mit offenem Gehäuse von unten,3 shows a schematic illustration of the ink print head with the housing open from below,
FIG 4 eine schematische Darstellung des Tintendruckkopfes von oben und4 shows a schematic representation of the ink print head from above and
FIG 5 eine schematische Schnittdarstellung des Tintendruck¬ kopfes.5 shows a schematic sectional view of the ink print head.
In einer hier nicht im einzelnen dargestellten Tintendruck¬ einrichtung ist auf einem Sch eibwagen ein Tintendruckkopf angeordnet, der im Schreibbetrieb zeilenweise entlang von einem Aufzeichnungsträger geführt wird. Der Tintenschreib- kopf enthält einen in Planartechnik aufgebauten Sandwich- Tintenkopf der in dem dargestellten Ausführungsbeispiel der FIG 1 aus fünf Metallplatten zusammengesetzt ist. Die eine Begrenzungsseite des Sandwich-Tintenkopfes bildet eine Membranplatte 15 aus Nickel von einer Plattenstärke von 0,03 mm auf der entsprechend der Anzahl der Düsen (in die- sem Falle 24) Piezoplättchen 14 von einem Durchmesser von ca. 1 mm als Antriebselemente für die Druckkammern ange¬ ordnet sind.In an ink printing device, not shown here in detail, an ink printing head is arranged on a disc carriage, which is written line by line along a recording medium in the writing mode. The ink writing head contains a sandwich ink head constructed in planar technology, which in the exemplary embodiment shown in FIG. 1 is composed of five metal plates. One boundary side of the sandwich ink head forms a diaphragm plate 15 made of nickel with a plate thickness of 0.03 mm on which, according to the number of nozzles (in this case 24), piezo plates 14 with a diameter of approx. 1 mm as drive elements for the Pressure chambers are arranged.
An die Membranplatte schließt sich eine Druckkammerplatte 16 an, die ebenfalls aus Nickel hergestellt ist und die eine Stärke von 0,2 mm entsprechend der gewünschten Höhe der Druckkammern aufweist. In der Druckkammerplatte 16 be- finden sich sämtliche Druckkammern 17 des Sandwichkopfes sowie Zuleitungsstrukturen 18 für die Tintenversorgung. An die Druckkammerplatte 16 wiederum schließt sich eine Ab- deckplatte 19 von einer Stärke von etwa 0,1 mm an, die die Mündungsbereiche des Düsenkanales 20 und des Tintenzufüh- rungskanales 21 jeder Druckkammer 17 enthalten,, weiters Ausnehmungen 22 die Bestandteile der Tintenzuführung sind.A pressure chamber plate 16 adjoins the membrane plate, which is also made of nickel and has a thickness of 0.2 mm corresponding to the desired height of the pressure chambers. In the pressure chamber plate 16 there are all pressure chambers 17 of the sandwich head as well as supply structures 18 for the ink supply. In turn, the pressure chamber plate 16 is followed by a cover plate 19 of a thickness of approximately 0.1 mm, which contains the mouth areas of the nozzle channel 20 and the ink supply channel 21 of each pressure chamber 17, furthermore recesses 22 are the components of the ink supply.
In der folgenden Drosselplatte 23 von einer Stärke von 0,1 mm sind Drosselstrecken 24 mit spaltenförmigem Querschnitt in Form von Schlitzen angeordnet und Ausnehmungen 25 als Bestandteile der Tintenzuführung. Abgeschlossen wird der Sandwich-Tintenkopf durch eine Düsenplatte 26 (Stärke 0,1 mm) die ebenfalls aus Nickel hergestellt ist und auf der die Düsenδffnungen 27 in einer der gewünschten Auflösung entsprechenden Konfiguration angeordnet' sind. Damit ergibt sich der durch einen Pfeil 51 gekennzeichnete Tintenfluß im Kopf und zwar ausgehend von der Tintenzuführöffnung 44 bis zur. Düsenplatte 26. -In the following throttling plate 23 with a thickness of 0.1 mm, throttling sections 24 with a columnar cross section in the form of slots are arranged and recesses 25 as components of the ink supply. The sandwich ink head is closed by a nozzle plate 26 (thickness 0.1 mm) which is also made of nickel and on which the Düsenδffnungen 27 are arranged in a configuration corresponding to the desired resolution '. This results in the ink flow in the head indicated by an arrow 51, starting from the ink supply opening 44 to. Nozzle plate 26.-
Nach dem Herstellen der einzelnen Metallplatten durch fitzen, Stanzen oder Galvanopla-stisch werden die Metallplat¬ ten übereinandergeschichtet und durch Diffusionsschweißen miteinander verbunden. Zu diesem Zwecke werden die Platten aufeinandergedrückt und so unter Schutzgas oder Vakuum ei¬ ner erhöhten Temperatur ausgesetzt. Temperatur und Halte¬ zeit ist dabei vom jeweiligen Werkstoff der Düsenplatten abhängig.After the individual metal plates have been produced by means of pointed, stamping or galvanoplastic, the metal plates are layered one on top of the other and connected to one another by diffusion welding. For this purpose, the plates are pressed together and thus exposed to an elevated temperature under a protective gas or vacuum. The temperature and holding time depend on the respective material of the nozzle plates.
Das Diffusionsschweißen ist bei der Herstellung von Tinten¬ druckköpfen von Vorteil, weil eine flächige metallische Verbindung hergestellt wird und keine Veränderungen der Ka¬ nalstruktur durch überschüssiges Lot oder Kleber auftritt. Außerdem ergibt sich damit ein hitzebeständiger Aufbau und für den Kopf kann einheitliches Metall verwendet werden. Um eine leichte -Herstellung der Strukturen zu .ermöglichen, ist es von Vorteil die Platten aus gut ätzbarem Werkstoff wie Neusilber herzustellen, sie zur Erzieluπg einer guten Schweißverbindung jedoch zu versilbern und diese versil¬ berten Teile in Verbund mit Nickelteilen zu verschweißen.Diffusion welding is advantageous in the production of inkjet printheads because a flat metallic connection is produced and no changes in the channel structure due to excess solder or adhesive occur. This also results in a heat-resistant structure and uniform metal can be used for the head. In order to make it easy to manufacture the structures, it is advantageous to use plates made of highly etchable material such as To produce nickel silver, but to silver them to achieve a good welded connection and to weld these silver-plated parts in combination with nickel parts.
Diffusionsschweißen ist möglich bei Temperaturen zwischen 40 und 90 % der absoluten Schmelztemperatur des Teilewerk¬ stoffes. Um eine für Diffusionsschweißen günstige Mate¬ rialpaarung mit Silber zu erreichen, genügt es unter an¬ derem beim Schichtaufbau mindestens jede zweite Platte zu versilbern.Diffusion welding is possible at temperatures between 40 and 90% of the absolute melting temperature of the part material. In order to achieve a material pairing with silver that is favorable for diffusion welding, it is sufficient, among other things, to silver-plate at least every second plate in the layer structure.
Nach der Herstellung dieses - im folgenden als Sandwich- Tintenkopf bezeichneten - Kopfes die vollautomatisch er¬ folgen kann, werden - wenn nicht schon bereits vorher ge- schehen - die Piezoplättchen 14 auf der Membranplatte 15 aufgeklebt.After the production of this head, which will be referred to as sandwich ink head in the following, which can be carried out fully automatically, the piezoplates 14 are glued onto the membrane plate 15, if not already done beforehand.
Bei dem dargestellten AusführXingsbeispiel der FIG 2 bis 5 weist der Sandwich-Tintenkopf auf der Membranplatte 15 ein Widerstandsarray 30 auf. Dieses Widerstandsarray 27 besteht aus einer Vielzahl von integrierten Einzelwiderständen 31, die im eingebauten Zustand in Reihe mit den Piezoplättchen 14 geschaltet sind und als Abgleichwiderstände für die Piezoplättchen 14 dienen.In the exemplary embodiment shown in FIGS. 2 to 5, the sandwich ink head has a resistance array 30 on the membrane plate 15. This resistance array 27 consists of a large number of integrated individual resistors 31 which, when installed, are connected in series with the piezo plates 14 and serve as trimming resistors for the piezo plates 14.
Zusätzlich befindet sich auf der Membranplatte ein Heizele¬ ment 32, das dazu dient, den Sandwich-Tintenkopf und damit die Tinte im Sandwich-Tintenkopf auf einer definierten gleichmässigen Temperatur zu halten. Das Widerstandsarray 30 und das Heizelement 32 kann entweder galvanoplastisch auf der Metallplatte ausgebildet und angeordnet sein oder aber sie werden gesondert hergestellt und auf der Metall¬ platte aufgeklebt bzw. durch Diffusionsschweißen mit der Metallplatte verbunden. Auf jeden Fall ist das Widerstands- array so ausgebildet und aus einem derartigen Material auf¬ gebaut, daß es mit Hilfe eines Laserstrahles abgeglichen, d.h. die Einzelwiderstände 31 in ihrem Wert verändert wer- den können. Dies geschieht im allgemeinen dadurch, daß ein Laserstrahl die einzelnen Widerstände 31 anschneidet und dadurch den Materialquerschnitt und damit den Widerstand verändern.In addition, there is a heating element 32 on the membrane plate which serves to keep the sandwich ink head and thus the ink in the sandwich ink head at a defined uniform temperature. The resistance array 30 and the heating element 32 can either be designed and arranged galvanoplastic on the metal plate or else they are manufactured separately and glued to the metal plate or connected to the metal plate by diffusion welding. In any case, the resistor array is designed and constructed from a material such that it is adjusted using a laser beam, ie the value of the individual resistors 31 is changed. that can. This is generally done in that a laser beam cuts the individual resistors 31 and thereby change the material cross section and thus the resistance.
Der so automatisch hergestellte Sandwich-Tintenkopf ein¬ schließlich Widerstandsarray 30 und evtl. Heizelement 32 wird nun in einem sogenannten in den FIG 2 bis 5 darge¬ stellte Dual-INLINE- Gehäuse vergossen. Als Dual-INLINE- Gehäuse werden Steckgehäuse bezeichnet, die entsprechend DIN 41866 aufgebaut sind und aus Kunststoff bestehen. Sie enthalten eine Anzahl von Anschlußbeinchen 33, die zwischen einem Ober- und Unterteil des aus Kunststoff gespritzten Steckgehäuses angeordnet sind. Die Anschlußbeinchen 33 sind dabei in zwei Reihen angeordnet und stehen sich im Gehäuse mit ihren Anschlußfahnen gegenüber. Es ist auch möglich, die Anschlußbeinchen einseitig anzuordnen, so daß der Tin¬ tekopf seitlich oder nach unten gesteckt werden kann. Das Steckgehäuse weist an seiner Oberseite eine Aufnahmeöffnung 35 zur Aufnahme des Sandwich-Tintenkopfes auf und eine Kon¬ taktierungs- und Abgleichöffnung 36 an seiner Unterseite, die über einen Deckel 37 verschlossen werden kann.The sandwich ink head thus automatically produced, including the resistor array 30 and possibly the heating element 32, is now encapsulated in a so-called dual INLINE housing shown in FIGS. 2 to 5. Plug-in housings are constructed as dual-INLINE housings that are constructed in accordance with DIN 41866 and are made of plastic. They contain a number of connecting legs 33, which are arranged between an upper and lower part of the injection molded plastic housing. The connecting legs 33 are arranged in two rows and face each other in the housing with their connecting lugs. It is also possible to arrange the connecting legs on one side, so that the ink head can be inserted laterally or downwards. The plug housing has on its upper side a receiving opening 35 for receiving the sandwich ink head and a contact and adjustment opening 36 on its lower side, which can be closed by a cover 37.
An den Rändern der Oberseite des Steckgehäuses sind Leisten 38 ausgebildet, die den eigentlichen Körper des Steckge¬ häuses- seitlich überragen und die verhindern, daß aus dem SandwichTintenkopf über die Düsen austretende Üb.erschuß- tinte die Anschlußbeinchen 33 verschmutzt. Das Oberteil 39 des Steckgehäuses selbst weist an seiner Unterseite eine dreieckig ausgebildete Tropfkante 40 auf, die den Körper 34 des Steckgehäuses überragt und die Überschußtinte 41 einer hier nicht dargestellten Auffangvorrichtung zuleitet.On the edges of the top of the plug housing, strips 38 are formed which project beyond the actual body of the plug housing and prevent the excess ink emerging from the sandwich ink head from the nozzles from contaminating the connecting legs 33. The upper part 39 of the plug housing itself has a triangular drip edge 40 on its underside, which projects beyond the body 34 of the plug housing and feeds the excess ink 41 to a collecting device, not shown here.
Hergestellt wird der ganze Tintendruckkopf derart, daß der vorgefertigte Sandwich-Tintenkopf in die Aufnahmeöffnung .35 eingebracht und dort z.B. durch Ultraschall verschweißt wird. Es ist jedoch auch möglich, den Sandwich-Tintenkopf un¬ mittelbar in das Steckgehäuse einzuspritzen.The entire ink print head is manufactured in such a way that the prefabricated sandwich ink head is introduced into the receiving opening .35 and is welded there, for example by ultrasound. However, it is also possible to inject the sandwich ink head directly into the plug housing.
In der in der FIG 5 dargestellten Einbaulage sind das Wi- derstandsarray 30^ und die Heizelemente 32 bzw. die Piezo¬ plättchen 15 über die Kontaktierungs- und Abgleichöffnung 36 zugänglich.In the embodiment shown in FIG 5 installed position, the Wi are derstandsarray 30 ^ and the heating elements 32 and the Piezo¬ plate 15 via the contacting and matching opening 36 accessible.
Zum Schließen der Kontakte wird der im Steckergehäuse be- festigte Sandwich-Tintenkopf einer vollautomatischen Bon- diereinrichtung zugeführt, die in bekannter Weise die An¬ schlüsse des Sandwich-Tintenkopfes einschließlich Heizele¬ menten und Widerstandsarray 30 mit den entsprechenden An¬ schlüssen der Anschlußbeinchen 33 mit entsprechenden Bonddrähterr 42 verbindet.To close the contacts, the sandwich ink head fixed in the plug housing is fed to a fully automatic bonding device which, in a known manner, also carries the connections of the sandwich ink head including heating elements and resistance array 30 with the corresponding connections of the connecting legs 33 corresponding bond wire 42 connects.
Danach wird der Tintendruckkopf in einen hier nicht dar¬ gestellten Abgleichautomaten eingebracht, der den Tinten¬ druckkopf mit Tinte füllt und über Laser die Einzelwider- stände 31 derart abgleicht, daß sich eine einheitlicheThe ink printhead is then introduced into a matching machine, not shown here, which fills the ink printhead with ink and uses lasers to match the individual resistors 31 in such a way that a uniform one is obtained
Fluggeschwindigkeit der ausgestoßeneπ Tintentröpfchen ein¬ stellt.Airspeed adjusts the ejected ink droplets.
Anschließend werden die Kontaktierungs- und Dichtungsöff- nung 36 tintendicht verschlossen und zwar durch Ein¬ schweißen (Ultraschall) des Deckels 37.Subsequently, the contacting and sealing opening 36 are closed in an ink-tight manner by welding (ultrasound) the cover 37.
Der so fertiggestellte Tintendruckkopf kann nun in einfa¬ cher Weise entsprechend der Darstellung der FIG 2 in einer auf dem Wagen der Tintendruckeinrichtung angeordneten Hal¬ tevorrichtung 43 in Form von z.B. einer Fassung oder einer Leiterplatte mit entsprechenden Öffnungen verrastet oder verlötet werden. Dabei wird gleichzeitig über die Tinten- anschlußöffnung 44 der Tinteπdruckkopf mit dem Tinten- Versorgungssystem der Tintendruckeinrichtung verbunden. Zu diesem Zwecke ist an dem Druckerwagen ein federnder Tinten¬ adapter 45 angeordnet, der aus einem in einem Befestigungs- stück 46 beweglichen Mundstück 47 besteht, da sich unter der Wirkung einer Feder 48 über Dichtungen 49 an die Tin- tenanschlußöffnung 44 anlegt und diese so abdichtet, daß über den Tintenkanal 50 leckfrei dem Tintendruckkopf Tinte zugeführt werden kann.The ink print head thus finished can now be latched or soldered in a simple manner, as shown in FIG. 2, in a holding device 43 arranged on the carriage of the ink print device in the form of, for example, a holder or a printed circuit board with corresponding openings. At the same time, the ink printhead is connected to the ink supply system of the ink printing device via the ink connection opening 44. For this purpose, a resilient ink adapter 45 is arranged on the printer carriage, which adapter consists of a Piece 46 movable mouthpiece 47 exists because, under the action of a spring 48, seals 49 abuts against the ink connection opening 44 and seals them so that ink can be supplied to the ink print head without leakage via the ink channel 50.
In der dargestellten senkrechten Einbaulage des Tinten¬ druckkopfes leitet die Tropfkante 40 aus dem Sandwich-Tin¬ tenkopf austretende Überschußtinte auf eine hier nicht dar- gestellte Auffangeinrichtung ab.In the illustrated vertical installation position of the ink print head, the drip edge 40 discharges excess ink emerging from the sandwich ink head onto a collecting device, not shown here.
12 Patentansprüche 5 FIG 12 claims 5 FIG
BezugszeichenlisteReference list
14 Piezoplättchen14 piezoplates
15 Membranplatte15 membrane plate
16 . Druckkammerplatte16 . Pressure chamber plate
17 Druckkammer .17 pressure chamber.
18 Zuleitungsstruktur 9 Abdeckplatte 0 Düsenkanal 1 Tintenzuführungskanal 2 Ausnehmungen 3 Drosselplatte 4 Drosselstrecken 5 Ausnehmungen 6 Düsenplatte 7 Düsenöffnungen 9 Tintenzuführung 0 Widerstandsarray 1 Einzelwiderstände 2 Heizelemente - • 3 Anschlußbeinchen 4 Gehäusekörper 5 Aufnahmeöffnung 6 Kontaktierungs- und Abgleichöffnung 7 Deckel 8 Leiste 9 Oberteil 0 Tropfkante 1 Überschußtinte 2 Bonddrähte 3 Haltevorrichtung 4 Tintenanschlußöffnung 5 Tintenadapter 6 Befestiguπgsstück 7 Mundstück 8 Feder 9 Dichtung Tintenkanal Strömungsrichtung der Tinte 18 supply structure 9 cover plate 0 nozzle channel 1 ink supply channel 2 recesses 3 throttle plate 4 throttle sections 5 recesses 6 nozzle plate 7 nozzle openings 9 ink supply 0 resistance array 1 individual resistors 2 heating elements - • 3 connecting pins 4 housing body 5 receiving opening 6 contacting and adjustment opening 7 cover 8 bar 9 top part 0 drip edge 1 Excess ink 2 bonding wires 3 holding device 4 ink connection opening 5 ink adapter 6 fastening 7 mouthpiece 8 spring 9 seal Ink channel flow direction of the ink

Claims

Patentansprüche Claims
1. Tintendruckkopf für eine Tintendruckeinrichtung g e ¬ k e n n z e i c h n e t durch - einen Sandwich-Tintenkopf aus einzelnen, übereinander angeordneten Tintenkanäle, Antriebselemente, Druckkammern und dgl. aufnehmenden Platten (14, 16, 19, 23, 26) die untereinander fest verbunden sind - ein den Sandwich-Tintenkopf aufnehmendes, vorzugsweise als Dual-INLINE-Gehäuse ausgebildetes Steckgehäuse mit Anschlußbeinen (33), wobei das Steckgehäuse an seiner Oberseite eine Aufnahmeöffnung (35) für den Sandwich-Tin¬ tenkopf aufweist und eine weitere an der Ober- bzw. Unter¬ seite angeordnete, bedarfsweise tintendicht verschließbare Kontaktierungs- und Abgleichöffnung (36) sowie eine Tin- tenanschlußöffnung (44) zur Zuführung der Schreibflüssig¬ keit (41).1. Ink printhead for an ink printing device ge ¬ characterized by - a sandwich ink head consisting of individual, superimposed ink channels, drive elements, pressure chambers and the like. Receiving plates (14, 16, 19, 23, 26) which are firmly connected to one another - a the sandwich -Ink head accommodating, preferably in the form of a dual INLINE housing, plug-in housing with connecting legs (33), the plug housing having a receiving opening (35) on the top for the sandwich ink head and a further one on the top or bottom side arranged, if necessary, ink-tightly closable contact and adjustment opening (36) and an ink connection opening (44) for supplying the writing fluid (41).
2. Tintendruckkopf nach Anspruch 2, d a d u r c h g e - k e n n z e i c h n e t , daß jedem Antr.iebselement des -2. Ink printhead according to claim 2, d a d u r c h g e - k e n n z e i c h n e t that each drive element of the -
Sandwich-Tintenkopfes ein elektrisches Abgleichelement (31) zugeordnet ist.Sandwich ink head is assigned an electrical balancing element (31).
3. Tintendruckkopf nach "Anspruch 2, d a d u r c h g e - k e n n z e i c h n e t , daß sämtliche Abgleichelemente auf einer im Steckgehäuse angeordneten Abgleichplatte (30) angeordnet sind.3. Ink printhead according to " Claim 2, dadurchge - indicates that all matching elements are arranged on a matching plate (30) arranged in the plug housing.
4. Tintendruckkopf nach einem der Ansprüche 1 bis 3, d a - d u r c h g e k e n n z e i c h n e t ,* daß Heizele¬ mente (32) für den Sandwich-Tintenkopf vorgesehen sind.4. Ink printhead according to one of claims 1 to 3, d a - d u r c h g e k e n n z e i c h n e t, * that Heizele¬ elements (32) are provided for the sandwich ink head.
5. Tiπtendruckkopf nach einem der Ansprüche 2 bis 4, d a ¬ d u r c h g e k e n n z e i c h n e t , daß die Ab- gleichplatte (30) und/oder die Heizelemente (32) dem Sand¬ wich-Tintenkopf zugeordnet sind.- 5. Tiπtendruckkopf according to one of claims 2 to 4, since ¬ characterized in that the adjustment plate (30) and / or the heating elements (32) are assigned to the sandwich ink head.
6. Tintendruckkopf nach einem der Ansprüche 2 bis 5, d a ¬ d u r c h g e k e n n z e i c h n e t , daß die Ab¬ gleich- elemente als laserabgleichfähige Widerstände (31) ausgebildet sind.6. Ink printhead according to one of claims 2 to 5, d a ¬ d u r c h g e k e n n z e i c h n e t that the Ab¬ trimming elements are designed as laser-trimmable resistors (31).
7. Tintendruckkopf nach einem der Ansprüche 1 bis 6, d a ¬ d u r c h g e k e n n z e i c h n e t , daß das Steck¬ gehäuse seitlich überragende, die Anschlußbeine (39) ab¬ deckende Leisten (38) vorgesehen sind.7. Ink printhead according to one of claims 1 to 6, d a ¬ d u r c h g e k e n n z e i c h n e t that the plug housing laterally projecting, the connecting legs (39) covering strips (38) are provided.
8. Tintendruckkopf nach einem der Anspüche 1 bis 7, d a ¬ d u r c h g e k e n n z e i c h n e t , daß an der Oberseite des Steckgehäuses eine Überschußtinte ableitende Tropfkante (40) ausgebildet ist.8. Ink printhead according to one of claims 1 to 7, so that an excess ink-draining drip edge (40) is formed on the upper side of the plug housing.
9. Tintendruckkopf nach einem der Ansprüche 1 bis 8, d a ¬ d u r c h g e k e n n z e i c h n e t , daß das Tin¬ tenversorgungssystem-des Tintendruckers einen mit der Tin- tenanschlußöffnung (44) zusammenwirkenden lösbaren Adapter- anschluß (45) aufweist.9. Ink printhead according to one of claims 1 to 8, so that the ink supply system of the ink printer has a detachable adapter connection (45) which interacts with the ink connection opening (44).
10. Tintendruckkopf nach einem der Ansprüche 1 bis 9, d a d u r c h g e k e n n z e i c h n e t , daß der Tintendruckkopf auswechselbar in einer Haltevorrichtung (43) der Tintendruckeinrichtung angeordnet ist.10. Ink printhead according to one of claims 1 to 9, d a d u r c h g e k e n n z e i c h n e t that the ink printhead is interchangeably arranged in a holding device (43) of the ink printing device.
11. Verfahren zum Herstellen eines Tintendruckkopfes nach einem der "Ansprüche 1 bis 9, g e k e n n z e i c h n e t durch die folgenden Verfahrensschritte - Herstellen des Sandwich-Tintenkopfes in Planartechnik11. A method for producing an ink print head according to one of " claims 1 to 9, characterized by the following process steps - producing the sandwich ink head in planar technology
- Befestigen des Sandwich-Tintenkopfes in dem Steckgehäuse in Schweiß- oder Spritztechnik- Attach the sandwich ink head in the plug housing in welding or spraying technology
- Schließen der elektrischen Kontakte zwischen dem Sandwich- Kopf und den Anschlußbeinen (33) - Abgleichen der Abgleichelemente (31)- Closing the electrical contacts between the sandwich head and the connecting legs (33) - Aligning the alignment elements (31)
- bedarfsweise Verschließen der Kontaktierungs- und Ab¬ gleichöffnung (36). - If necessary, closing the contacting and adjustment opening (36).
12. Verfahren nach Anspruch 11, d a d u r c h g e ¬ k e n n z e i c h n e t , daß das Schließen der elektri¬ schen Kontakte durch Bondierautomaten erfolgt. 12. The method according to claim 11, d a d u r c h g e ¬ k e n n z e i c h n e t that the electrical contacts are closed by automatic bonding machines.
EP88902108A 1987-04-15 1988-03-15 Planar ink printing head in a dual-in-line casing Expired - Lifetime EP0335913B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3712891 1987-04-15
DE19873712891 DE3712891A1 (en) 1987-04-15 1987-04-15 PLANART INK PRINT HEAD IN DUAL-INLINE HOUSING

Publications (2)

Publication Number Publication Date
EP0335913A1 true EP0335913A1 (en) 1989-10-11
EP0335913B1 EP0335913B1 (en) 1992-10-21

Family

ID=6325744

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88902108A Expired - Lifetime EP0335913B1 (en) 1987-04-15 1988-03-15 Planar ink printing head in a dual-in-line casing

Country Status (5)

Country Link
US (1) US4963897A (en)
EP (1) EP0335913B1 (en)
JP (1) JP2752401B2 (en)
DE (2) DE3712891A1 (en)
WO (1) WO1988007935A1 (en)

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CA1304983C (en) * 1987-10-23 1992-07-14 David W. Pinkernell Printhead-carriage alignment and electrical interconnect lock-in mechanism
AU626457B2 (en) * 1989-09-18 1992-07-30 Canon Kabushiki Kaisha Ink jet recording head and ink jet recording apparatus having same
WO1991008111A1 (en) * 1989-11-30 1991-06-13 Siemens Aktiengesellschaft Conductor-path arrangement in printing heads with a circular ink-feed aperture
JPH04251750A (en) * 1991-01-28 1992-09-08 Fuji Electric Co Ltd Ink-jet recording head
US5363134A (en) * 1992-05-20 1994-11-08 Hewlett-Packard Corporation Integrated circuit printhead for an ink jet printer including an integrated identification circuit
DE69528676T2 (en) 1994-02-15 2003-06-12 Rohm Co Ltd Inkjet printhead
US5635968A (en) * 1994-04-29 1997-06-03 Hewlett-Packard Company Thermal inkjet printer printhead with offset heater resistors
US5940095A (en) * 1995-09-27 1999-08-17 Lexmark International, Inc. Ink jet print head identification circuit with serial out, dynamic shift registers
US5757394A (en) * 1995-09-27 1998-05-26 Lexmark International, Inc. Ink jet print head identification circuit with programmed transistor array
US5901425A (en) 1996-08-27 1999-05-11 Topaz Technologies Inc. Inkjet print head apparatus
GB9713872D0 (en) * 1997-07-02 1997-09-03 Xaar Ltd Droplet deposition apparatus
US6047816A (en) * 1998-09-08 2000-04-11 Eastman Kodak Company Printhead container and method
US6394579B1 (en) 1999-08-24 2002-05-28 Hewlett-Packard Company Fluid ejecting device with varied nozzle spacing
US6234598B1 (en) 1999-08-30 2001-05-22 Hewlett-Packard Company Shared multiple terminal ground returns for an inkjet printhead

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Also Published As

Publication number Publication date
JP2752401B2 (en) 1998-05-18
WO1988007935A1 (en) 1988-10-20
JPH02502984A (en) 1990-09-20
DE3875477D1 (en) 1992-11-26
EP0335913B1 (en) 1992-10-21
DE3712891A1 (en) 1988-11-03
US4963897A (en) 1990-10-16

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