DE3051250C2 - Ink jet recording head - Google Patents

Ink jet recording head

Info

Publication number
DE3051250C2
DE3051250C2 DE3051250A DE3051250A DE3051250C2 DE 3051250 C2 DE3051250 C2 DE 3051250C2 DE 3051250 A DE3051250 A DE 3051250A DE 3051250 A DE3051250 A DE 3051250A DE 3051250 C2 DE3051250 C2 DE 3051250C2
Authority
DE
Germany
Prior art keywords
heat generating
bubble
ink jet
ink
discharge
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 - Lifetime
Application number
DE3051250A
Other languages
German (de)
Inventor
Naoki Ayata
Yoshiaki Shirato
Yasushi Takatori
Mitsuaki Seki
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.)
Canon Inc
Original Assignee
Canon 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
Priority claimed from JP3947279A external-priority patent/JPS609906B2/en
Priority claimed from JP3946779A external-priority patent/JPS55132253A/en
Priority claimed from JP3946979A external-priority patent/JPS55132255A/en
Priority claimed from JP3947179A external-priority patent/JPS55132256A/en
Priority claimed from JP3946879A external-priority patent/JPS55132254A/en
Priority claimed from JP3947079A external-priority patent/JPS55132263A/en
Priority claimed from JP4384979A external-priority patent/JPS55135673A/en
Priority claimed from JP2134880A external-priority patent/JPS56117682A/en
Application filed by Canon Inc filed Critical Canon Inc
Application granted granted Critical
Publication of DE3051250C2 publication Critical patent/DE3051250C2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/015Ink jet characterised by the jet generation process
    • B41J2/04Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04533Control methods or devices therefor, e.g. driver circuits, control circuits controlling a head having several actuators per chamber
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/015Ink jet characterised by the jet generation process
    • B41J2/04Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04541Specific driving circuit
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/015Ink jet characterised by the jet generation process
    • B41J2/04Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04543Block driving
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/015Ink jet characterised by the jet generation process
    • B41J2/04Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/0458Control methods or devices therefor, e.g. driver circuits, control circuits controlling heads based on heating elements forming bubbles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/015Ink jet characterised by the jet generation process
    • B41J2/04Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04588Control methods or devices therefor, e.g. driver circuits, control circuits using a specific waveform
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/015Ink jet characterised by the jet generation process
    • B41J2/04Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/0459Height of the driving signal being adjusted
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/015Ink jet characterised by the jet generation process
    • B41J2/04Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04591Width of the driving signal being adjusted
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/07Ink jet characterised by jet control
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/145Arrangement thereof
    • B41J2/155Arrangement thereof for line printing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/21Ink jet for multi-colour printing
    • B41J2/2121Ink jet for multi-colour printing characterised by dot size, e.g. combinations of printed dots of different diameter
    • B41J2/2128Ink jet for multi-colour printing characterised by dot size, e.g. combinations of printed dots of different diameter by means of energy modulation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/62Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for printing on two or more separate sheets or strips of printing material being conveyed simultaneously to or through the printing zone
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/19Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays
    • H04N1/191Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays the array comprising a one-dimensional array, or a combination of one-dimensional arrays, or a substantially one-dimensional array, e.g. an array of staggered elements
    • H04N1/192Simultaneously or substantially simultaneously scanning picture elements on one main scanning line
    • H04N1/193Simultaneously or substantially simultaneously scanning picture elements on one main scanning line using electrically scanned linear arrays, e.g. linear CCD arrays
    • H04N1/1931Simultaneously or substantially simultaneously scanning picture elements on one main scanning line using electrically scanned linear arrays, e.g. linear CCD arrays with scanning elements electrically interconnected in groups
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/40Picture signal circuits
    • H04N1/40025Circuits exciting or modulating particular heads for reproducing continuous tone value scales
    • H04N1/40031Circuits exciting or modulating particular heads for reproducing continuous tone value scales for a plurality of reproducing elements simultaneously
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2202/00Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01Embodiments of or processes related to ink-jet heads
    • B41J2202/19Assembling head units

Abstract

A droplet is emitted from an orifice by generating a bubble in a small liquid chamber in response to a droplet generating instruction. By causing gradual contraction of the bubble, excessive recession of the meniscus into the liquid chamber, which would hinder subsequent droplet generation, is prevented. The bubble may be produced by a heating element. The gradual contraction of the bubble is caused by the heat dissipation of the heating element, bubble or liquid, condensation to liquid, capillary liquid supply or them, combinations of the dimension of the droplet emitted from the orifice is dependent on the parameters such as the quantity of energy applied, width of the heating element, internal die. of the liquid chamber, distance from the orifice to the heating element etc., and the physical properties of the liquid such as specific heat, thermal conductivity, thermal expansion coefficient, viscosity, etc.

Description

Die Erfindung bezieht sich auf einen Tintenstrahl- Aufzeichungskopf gemäß dem Oberbegriff des Patentanspruchs.The invention relates to an inkjet Recording head according to the preamble of the claim.

Ein Tintenstrahl-Aufzeichnungskopf ist aus der nicht vorveröffentlichten DE-OS 28 43 064 bekannt. Bei einem derartigen Tintenstrahl-Aufzeichnungskopf wird durch Wärmezufuhr bewirkt, daß sich in der Tinte Dampfbläschen bilden, welche ihrerseits wiederum einen Ausstoß von Tintentröpfchen zur Folge haben. Die nach diesem Verfahren arbeitenden Tintenstrahl-Aufzeichnungsgeräte weisen den Vorteil auf, daß eine rasche, saubere und geräuscharme Aufzeichnung auf Normalpapier ohne besondere Fixierungsbehandlung erzielbar ist und daß nur bei aktuellem Bedarf Tintentröpfchen ausgestoßen werden, so daß Tintenrückgewinnungseinrichtungen für das Abfangen und Rückführen nicht benötigter Tintentröpfchen entfallen können.An ink jet recording head is made of not previously published DE-OS 28 43 064 known. At such an ink jet recording head is made by The application of heat causes vapor bubbles to form in the ink form, which in turn produce an output of Result in ink droplets. The following this procedure working inkjet recording devices have the Advantage of being quick, clean and quiet Recorded on plain paper with no particular Fixation treatment can be achieved and that only at ink droplets are ejected so that  Interceptor and ink recovery devices There is no need to return unnecessary ink droplets can.

Ein Tintenstrahlaufzeichnungskopf mit den Merkmalen gemäß dem Oberbegriff des Patentanspruches 1 ist der DE-OS 21 64 614 entnehmbar.An ink jet recording head having the features according to the The preamble of claim 1 is DE-OS 21 64 614 removable.

Falls bei einem derartigen Tintenstrahl-Aufzeichnungskopf eine Vielzahl von Aufzeichnungs-Ausstoßöffnungen vorgesehen werden, hat dies eine komplizierte Ansteuerung zur Folge und kann darüberhinaus insbesondere in den Randbereichen des Aufzeichnungsblatts zu einer unbefriedigenden Aufzeichnungsqualität führen.If such an ink jet recording head a plurality of recording discharge ports are provided complicated control and can also in particular in the peripheral areas of the recording sheet to an unsatisfactory Record quality.

Eine weitere Tintenausstoßvorrichtung ist der US 3 179 042 entnehmbar. Bei dieser Vorrichtung wir mit zwei Elektroden im Tintenpfad, die unmittelbar vor der Ausstoßöffnung angeordnet sind, ein elektrischer Strom durch die Tinte geschickt, der dort zur Verdampfung der Tinte und dabei zum Ausstoß von Tinte führt.Another ink ejection device is US 3 179 042 removable. In this device we use two electrodes in the Ink path located just before the discharge port are an electric current sent through the ink that there for evaporation of the ink and thereby for ejecting ink leads.

Der Erfindung liegt die Aufgabe zugrunde, einen Tintenstrahl-Aufzeichnungskopf gemäß dem Oberbegriff des Patentanspruchs derart weiterzubilden, daß auf einfache Weise auch in den Randbereichen eines Aufzeichnungsblatts stets eine gute Aufzeichnungsqualität gewährleistbar ist.The invention has for its object a Ink jet recording head according to the preamble of Develop claim so that in simple Also in the marginal areas of a recording sheet good recording quality can always be guaranteed.

Diese Aufgabe wird durch einen Tintenstrahlkopf mit den Merkmalen gemäß Patentanspruch 1 gelöst.This task is accomplished by an ink jet head with the features according to Claim 1 solved.

Demnach sind zusätzlich zu den mit einer Tintenzuführeinrichtung in Verbindung stehenden Aufzeichnungs-Ausstoßöffnungen Ausstoßöffnungen vorgesehen, die zwar mit der Tintenzuführeinrichtung in Verbindung stehen, aber nicht zum Ausstoßen von Tinte verwendet werden. Accordingly, in addition to those with a Ink supply device related Recording discharge ports provided that with the ink supply in Connected but not for ejecting ink be used.  

Die Erfindung wird nachstehend unter Bezugnahme auf die Zeichnung näher erläutert. The invention is as follows with reference to the drawing explained.  

Fig. 1 ist eine perspektivische Ansicht, die ein Beispiel für den Aufbau eines Kopfes zeigt. Fig. 1 is a perspective view showing an example of the structure of a head.

Fig. 2 ist eine perspektivische Ansicht, die eine Weiterbildung des Kopfes zeigt. Fig. 2 is a perspective view showing a development of the head.

Fig. 3 ist eine vergrößerte Vorderansicht, die den Kopf und dessen Lage in bezug auf einen Lesesensor zeigt. Fig. 3 is an enlarged front view showing the head and its position with respect to a reading sensor.

Die Fig. 1 zeigt schematisch ein Aus­ führungsbeispiel für einen Aufzeichnungskopf, bei dem ein Substrat SS1 an seiner Oberfläche mit Heizelementen H1 bis H7 und Wählelektroden 1l1 bis 1l7 versehen ist, wo­ bei die Heizelemente H1 bis H7 gleiche Fläche und gleichen Wider­ stand haben und jeweils übereinstimmend mit Flüssigkeits­ kammern angeordnet sind. Das Substrat SS1 ist mit einer Platte GL1 verbunden, die Nuten M1 bis M7 hat, welche entsprechend viele Flüssigkeitskammern an der Grenz­ fläche zwischen dem Substrat SS1 und der Platte GL1 bilden. Fig. 1 shows schematically an exemplary embodiment of a recording head in which a substrate SS1 is provided on its surface with heating elements H1 to H7 and selection electrodes 1 l1 to 1 l7, where the heating elements H1 to H7 have the same area and the same resistance and are arranged in accordance with liquid chambers. The substrate SS1 is connected to a plate GL1, which has grooves M1 to M7, which form a corresponding number of liquid chambers at the interface between the substrate SS1 and the plate GL1.

Die Platte GL1 ist mit einer Tintenzufuhr-Kammer ND für die Tintenzufuhr und einer Tinteneinlaßöffnung IS für die Einführung von Tinte aus einem nicht dargestellten Tintenbehälter versehen.The plate GL1 has an ink supply chamber ND for the ink supply and an ink inlet port IS for the introduction of ink from a not shown Ink tank provided.

Die gemeinsame Elektrode ist in sieben Leitungen 1D1 bis 1D7 aufgeteilt. The common electrode is divided into seven lines 1 D1 to 1 D7.

Die Fig. 2 zeigt ein Ausführungsbeispiel einer Tintenstrahlblock-Kassette, bei dem auf einer auf dem elektrisch leitenden Substrat ausgebildeten Isolier­ schicht vier Blöcke D1 bis D7 aus Zuleitungen P1 bis P32 mit Transistoranordnungen TA1 bis TA7 angebracht sind, die jeweils Transistoren und Schaltelemente enthalten. Zwischen den Blöcken JB1 bis JB7, die jeweils 32 Nuten enthalten, sind Leerbereiche BL1, BL2 und BL3 vorgesehen. Für die selektive Ansteue­ rung von 32 Heizelementen sind mindestens 33 Zuleitungen notwendig und die Anordnung macht eine große Chipfläche bzw. Substratfläche für die Aufnahme zusätzlicher Funktionen erforderlich. Wenn daher diese Blöcke D1 bis D7 ohne die genannten Leerbereiche dicht aneinander angeordnet werden, sind die mit den Transistoranordnungen TA1 bis TA7 zu verbin­ denden Anschlußflächen für die handelsüblichen Draht- Mikroverbindungen zu dicht angeordnet. Ferner müssen auch die benachbarten Blöcke so angeschlossen werden, daß eine gleichförmige Düsenöffnungs-Teilung erzielt wird, was eine außerordentlich schwierige Bearbeitung erforderlich macht. Andererseits ergeben die Leerbereiche BL1 bis BL3 zusätzlichen Raum für die Aufnahme der Transi­ storanordnungen, wie z. B. der Anordnung TA7. Natürlich erfolgt an den Leerbereichen keine Aufzeichnung, so daß zur wechselseitigen Auffüllung der Leerbereiche gemäß der Darstellung in Fig. 3 gleichartige Blöcke versetzt bzw. gestaffelt auf und unter dem Metallsubstrat HS ange­ bracht werden. Fig. 2 shows an embodiment of an ink jet block cartridge, in which on an insulating layer formed on the electrically conductive substrate four blocks D1 to D7 from leads P1 to P32 with transistor arrangements TA1 to TA7 are attached, each containing transistors and switching elements. Empty areas BL1, BL2 and BL3 are provided between blocks JB1 to JB7, each containing 32 grooves. For the selective control of 32 heating elements, at least 33 supply lines are necessary and the arrangement requires a large chip area or substrate area for the inclusion of additional functions. Therefore, if these blocks D1 to D7 are arranged close to each other without the mentioned empty areas, the connection surfaces to be connected with the transistor arrangements TA1 to TA7 are arranged too close for the commercially available wire micro connections. Furthermore, the adjacent blocks must also be connected so that a uniform nozzle opening pitch is achieved, which makes extremely difficult machining necessary. On the other hand, the empty areas BL1 to BL3 provide additional space for accommodating the transistor arrangements, such as. B. the arrangement TA7. Of course, no recording takes place at the empty areas, so that for the mutual filling of the empty areas, as shown in FIG. 3, similar blocks are staggered or staggered on and below the metal substrate HS.

Falls jede Kassette gemäß der Darstellung in Fig. 2 vier Blöcke bzw. insgesamt 32×4=128 Düsenöffnungen enthält, ist die Gesamtanzahl der Düsenöffnungen in einem Vollzeilen-Mehrfach-Aufzeichnungskopf mit diesen Kasset­ ten in versetzter Anordnung auf und unter dem Metall­ substrat HS ein Vielfaches von 128. Falls ein derartiger Tintenstrahl-Aufzeichnungskopf für die Aufzeichnung bei einem Kopiergerät oder einem Faksimile-Gerät in Ver­ bindung mit einem im Handel erhältlichen Lesesensor für das Lesen der Vorlageninformation verwendet wird, kann sich ein Unterschied zwischen der Gesamtanzahl der Düsenöffnungen und der Anzahl der Photosensorelemente in einem derartigen Photosensor ergeben. Beispielsweise hat eine im Handel erhältliche Photosensoranordnung CS für das Format A4 nach der japanischen Industrienorm nur 1728 Photosensorelemente, so daß gemäß der Darstellung in Fig. 3 die Tintenstrahlblöcke JB1 und JB56 an den beiden Enden nicht verwendet werden. Folglich werden die Stellen- bzw. Gruppen-Signale für den Zeitmulti­ plexbetrieb auf D1 bis D54 beschränkt, um dadurch eine dynamische Ansteuerung mit einem Tastverhältnis von 1:54 auszuführen. Die Blindköpfe bzw. Blindblöcke JB1 und JB56 werden an den beiden Enden der Block-Kassetten angeordnet und vorteilhaft dazu verwendet, Staubteilchen und unnötige Bläschen zu sammeln. Falls ferner an einem Randblock einer dazwischensitzenden Kassette ein Fehler entsteht, kann diese Kassette einfach mit der Endkassette 4JK1 oder 4JK14 vertauscht werden.If each cartridge as shown in Fig. 2 contains four blocks or a total of 32 × 4 = 128 nozzle openings, the total number of nozzle openings in a full-line multiple recording head with these cartridges in a staggered arrangement on and under the metal substrate HS Multiple times 128. If such an ink jet recording head is used for recording on a copying machine or facsimile machine in conjunction with a commercially available reading sensor for reading the original information, there may be a difference between the total number of nozzle openings and the number of the photosensor elements in such a photosensor. For example, a commercially available photosensor arrangement CS for the A4 format according to the Japanese industrial standard has only 1728 photosensor elements, so that, as shown in FIG. 3, the inkjet blocks JB1 and JB56 are not used at both ends. As a result, the position or group signals for the time-division multiplex operation are limited to D1 to D54, in order to thereby carry out a dynamic control with a pulse duty factor of 1:54. The dummy heads or dummy blocks JB1 and JB56 are arranged at the two ends of the block cassettes and are advantageously used to collect dust particles and unnecessary bubbles. In addition, if an error occurs on an edge block of a cassette in between, this cassette can simply be exchanged with the end cassette 4 JK1 or 4 JK14.

Claims (3)

1. Tintenstrahlkopf zum Ausstoß von Tinte auf ein Aufzeichnungsmedium, mit
  • - einer Mehrzahl von jeweils über einen Strömungspfad mit einem gemeinsamen Tintenreservoir verbundenen Ausstoßöffnungen, die in Richtung einer Druckzeile gesehen aufeinanderfolgend unter Bildung einer Ausstoßöffnungszeile angeordnet sind,
  • - jeweils einer jeder Ausstoßöffnung zugeordneten Wärmeerzeugungseinrichtung (H) zur Erzeugung von Blasen,
1. Ink jet head for ejecting ink onto a recording medium, with
  • a plurality of ejection openings, each connected via a flow path to a common ink reservoir, which are arranged in succession in the direction of a printing line to form an ejection opening line,
  • a heat generating device (H) associated with each discharge opening for generating bubbles,
dadurch gekennzeichnet,characterized,
  • - daß der Tintenstrahlkopf derart betrieben wird, daß die Wärmeerzeugungseinrichtungen (H) einer vorgegebenen Anzahl von in beiden Endbereichen der Ausstoßöffnungszeile außen gelegenen Ausstoßöffnungen für jeden Aufzeichnungsbetrieb inaktiv gehalten und ausschließlich die Wärmeerzeugungseinrichtungen (H) der dazwischen gelegenen Ausstoßöffnungen zur Aufzeichnung aktiviert werden,- That the ink jet head is operated such that the Heat generating devices (H) a predetermined number from outside in both end portions of the discharge port line located discharge openings for each recording operation kept inactive and only the Heat generating devices (H) in between Discharge openings are activated for recording,
  • - daß die Ausstoßöffnungen mit den für jeden Aufzeichnungsbetrieb inaktiv gehaltenen Wärmeerzeugungseinrichtungen (H) und die Ausstoßöffnungen mit den für den Aufzeichnungsbetrieb aktivierten Wärmeerzeugungseinrichtungen (H) über die Strömungspfade und das Tintenreservoir miteinander verbunden sind,- That the discharge openings with the for everyone Record mode kept inactive Heat generating devices (H) and the discharge openings with those activated for recording operation Heat generating devices (H) via the flow paths and the ink reservoir are connected,
  • - daß die Wärmeerzeugungselemente (H) in den Strömungspfaden angeordnet sind.- That the heat generating elements (H) in the flow paths are arranged.
2. Tintenstrahlkopf nach Anspruch 1, dadurch gekennzeichnet, daß die Ausstoßöffnungen in einer Richtung senkrecht zur Längserstreckung der Ausstoßöffnungszeile und in einer Richtung senkrecht zur Ausstoßrichtung gegeneinander versetzt sind.2. Ink jet head according to claim 1, characterized in that that the discharge ports in a direction perpendicular to Longitudinal extension of the discharge opening line and in one Direction perpendicular to the direction of ejection against each other are offset.
DE3051250A 1979-04-02 1980-04-01 Ink jet recording head Expired - Lifetime DE3051250C2 (en)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
JP3946779A JPS55132253A (en) 1979-04-02 1979-04-02 Recorder
JP3946979A JPS55132255A (en) 1979-04-02 1979-04-02 Recording device
JP3947179A JPS55132256A (en) 1979-04-02 1979-04-02 Recording device
JP3947279A JPS609906B2 (en) 1979-04-02 1979-04-02 Method for preventing meniscus destruction in inkjet recording equipment
JP3946879A JPS55132254A (en) 1979-04-02 1979-04-02 Recorder
JP3947079A JPS55132263A (en) 1979-04-02 1979-04-02 Recording device
JP4384979A JPS55135673A (en) 1979-04-11 1979-04-11 Recording device
JP2134880A JPS56117682A (en) 1980-02-22 1980-02-22 Recording device
DE3051187 1980-04-01

Publications (1)

Publication Number Publication Date
DE3051250C2 true DE3051250C2 (en) 1996-04-18

Family

ID=27575885

Family Applications (3)

Application Number Title Priority Date Filing Date
DE3051249A Expired - Lifetime DE3051249C2 (en) 1979-04-02 1980-04-01 Droplet generating method for ink jet recording appts.
DE3051267A Expired - Lifetime DE3051267C2 (en) 1979-04-02 1980-04-01 Recording method for a recording device for ejecting liquid droplets
DE3051250A Expired - Lifetime DE3051250C2 (en) 1979-04-02 1980-04-01 Ink jet recording head

Family Applications Before (2)

Application Number Title Priority Date Filing Date
DE3051249A Expired - Lifetime DE3051249C2 (en) 1979-04-02 1980-04-01 Droplet generating method for ink jet recording appts.
DE3051267A Expired - Lifetime DE3051267C2 (en) 1979-04-02 1980-04-01 Recording method for a recording device for ejecting liquid droplets

Country Status (1)

Country Link
DE (3) DE3051249C2 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3179042A (en) * 1962-06-28 1965-04-20 Sperry Rand Corp Sudden steam printer
DE2164614A1 (en) * 1971-01-11 1972-08-10 Stemme N Arrangement of writing instruments for writing with colored liquid on paper
JPS51132036A (en) * 1975-04-30 1976-11-16 Ricoh Co Ltd Non impact dot printer
US4063254A (en) * 1976-06-28 1977-12-13 International Business Machines Corporation Multiple array printer
DE2843064A1 (en) * 1977-10-03 1979-04-12 Canon Kk METHOD AND DEVICE FOR LIQUID JET RECORDING

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4112469A (en) * 1977-04-21 1978-09-05 The Mead Corporation Jet drop copying apparatus
DE4117518C2 (en) * 1991-05-29 2000-06-21 Leybold Ag Device for sputtering with a moving, in particular rotating, target

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3179042A (en) * 1962-06-28 1965-04-20 Sperry Rand Corp Sudden steam printer
DE2164614A1 (en) * 1971-01-11 1972-08-10 Stemme N Arrangement of writing instruments for writing with colored liquid on paper
JPS51132036A (en) * 1975-04-30 1976-11-16 Ricoh Co Ltd Non impact dot printer
US4063254A (en) * 1976-06-28 1977-12-13 International Business Machines Corporation Multiple array printer
DE2843064A1 (en) * 1977-10-03 1979-04-12 Canon Kk METHOD AND DEVICE FOR LIQUID JET RECORDING

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Patents Abstract of Japan & JP-A-51 132036 mit JP-OS 51-132036 *

Also Published As

Publication number Publication date
DE3051249C2 (en) 1998-03-12
DE3051267C2 (en) 1999-02-25

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