EP0222844B1 - Recording unit - Google Patents

Recording unit Download PDF

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Publication number
EP0222844B1
EP0222844B1 EP86903205A EP86903205A EP0222844B1 EP 0222844 B1 EP0222844 B1 EP 0222844B1 EP 86903205 A EP86903205 A EP 86903205A EP 86903205 A EP86903205 A EP 86903205A EP 0222844 B1 EP0222844 B1 EP 0222844B1
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EP
European Patent Office
Prior art keywords
writing
ink
tube
hole
instrument according
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP86903205A
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German (de)
French (fr)
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EP0222844A1 (en
Inventor
Werner Heinzmann
Klaus Frietsch
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Schmidt Feintechnik GmbH
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Schmidt Feintechnik GmbH
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Publication of EP0222844A1 publication Critical patent/EP0222844A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K8/00—Pens with writing-points other than nibs or balls
    • B43K8/16—Pens with writing-points other than nibs or balls with tubular writing-points comprising a movable cleaning element

Definitions

  • the subject of the application is a writing instrument of the type mentioned in the preamble of the main claim.
  • liquid ink is brought over a tube on the writing pad.
  • a wire-shaped or wick-shaped writing element is arranged in the tube and forms ink supply channels with the inner wall of the tube.
  • This writing wick protrudes beyond the outer end of the tube and forms the writing tip with it. It is axially displaceable in the tube against the action of a spring element.
  • the spring element ensures that the writing tip remains in contact with the writing pad in every writing position.
  • the axial movement of the writing wick that occurs automatically during writing removes contaminants from the writing tube.
  • the pumping effect that occurs when the writing tip is attached supports this effect.
  • this spring element consists of an ink-permeable foam plastic cushion or the like.
  • This foam plastic pillow has two disadvantages.
  • the restoring force of the pillow decreases over the course of use, which can impair the functionality of the writing instrument.
  • a foam plastic cushion with the density required for elasticity has only limited ink permeability.
  • non-pigmented inks In order to achieve a better open shelf life with writing instruments of this type than with known tube writing instruments, non-pigmented inks must be used instead of the pigmented inks. The latter are known to have a much higher opacity than non-pigmented inks. In order to achieve a comparable blackening and opacity of the lines created with the inks, more intensive ink delivery is required. However, this is not guaranteed in the writing instrument resulting from DE-OS 30 23 189, particularly due to the foam plastic cushion.
  • This object is generally achieved by improving the ink flow in the area of the inner end of the writing element.
  • the ink reservoir located in the rear part of the housing 10, from which the liquid ink is transported by means of the ink guide 11 into the front area of the writing tip due to the capillary action of the ink guide.
  • a socket 19 is inserted with a coaxially pressed-in sleeve 20.
  • the sleeve 20 receives on one end the front end of the ink conductor 11 and on the other side carries the writing wick 30 stored in the writing tube 32.
  • the writing wick 30 is preferably made of thermoplastic material and has axially extending capillary channels 33 in its outer surface. as the section of FIG. 3 illustrates.
  • the writing wick 30 is thickened to a spherical head 31.
  • a spring element is inserted into the sleeve 20, which consists of a ring 40 with a return spring 41 projecting into the ring interior.
  • This return spring is designed and arranged as the section according to FIG. 5 shows that the ink emerging from the ink conductor 11 can reach the writing wick 30 without hindrance.
  • 40 axially extending capillary channels 42 and 43 are also arranged on the outer and inner lateral surface of the ring. These guide the ink emerging from the ink conductor 11 to radially extending collecting channels 23 which are injected into the sleeve 20 (cf. FIG. 4).
  • the return spring 41 ensures during the writing process that the longitudinally movable writing wick 30 is pressed against the writing pad, so that contact with the writing pad is maintained in every writing position.
  • the writing wick 30 is moved axially against the action of the return spring 41, as a result of which impurities are removed from the writing tube 32 on the one hand by mechanical action and on the other hand by pumping action.
  • the return spring 41 also brings about a soft support of the writing tip on the writing pad, which leads to a pleasant feeling when drawing and writing.
  • the inner lateral surface of the sleeve 20 is provided with preferably injected, axially extending capillary channels 22 (cf. FIG. 6). It is hereby achieved that the ink is guided not only over the end face 11a of the ink guide but also to a not inconsiderable extent over the outer face 11b of the ink guide.
  • the ink supplied via the capillary channels 22 reaches the annular capillary gap 24 via the radial channels 23.
  • the ink discharged through the capillaries 42 and 43 on the end face of the ink conductor crawls capillary between the ring 40 and the end face of the bore in the sleeve 20 to the radial channels 23 and thus also reaches the annular gap 24.
  • An air channel 21 provided in the sleeve 20 connects the outside air to the annular air space 13 surrounding the ink conductor, which in turn is connected to the ink reservoir (not shown), as a result of which the latter is vented when ink is dispensed.
  • writing implements designed according to the invention can be stored for much longer than conventional inking implements working with pigmented ink. Storage capacities of over a year can thus be achieved if, as indicated with FIG. 1, the writing tip is covered with a closure cap 50.
  • a sealing ring 51 resting on the outer surface of the sleeve 20 ensures that the space in the area of the front end of the writing tip is sealed and has only a small volume.
  • a writing wire 30 ' is recommended instead of the writing wick 30 made of plastic, as is illustrated with FIG. 2.
  • this writing wire 30' delimits a capillary annular gap 33 ', via which ink is transported to the writing tip in the same way as with the capillary channels 33.
  • a ball head 31 ′ preferably made of plastic, is injection molded onto its inner end, against which the return spring 41 bears.
  • the capillary system designed according to the invention ensures that the writing medium is fed to the writing tip without delay, evenly and in sufficient quantity.
  • the writing instrument is designed in such a way that, due to its simple, production-oriented structure, it is possible to produce it inexpensively. So the writing instrument consists essentially of the housing 10, the socket 19, the sleeve 20 with the writing tube 32 and the wick 30, the spring element with ring 40 and return spring 41, the ink conductor 11 and the ink reservoir, not shown. All parts are designed so that they can be manufactured and assembled with simple tools.

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  • Pens And Brushes (AREA)

Abstract

A tube-type recording unit which possesses at its front end a small writing tube (32) with a writing wick (30) which moves axially therein. The writing wick (30), which has at its inner end a thickened spherical head (31), can be pressed in axially against the action of a return spring (41). The return spring (41) forms part of a spring element ring which is inserted between the ink supply line (11) and the writing wick (30) in the casing (20). The ring (40) and return spring (41) are dimensioned in such a way that the ink which emerges from the ink supply line (11) arrives without any restriction and in sufficient quantity at the writing wick (30).

Description

Gegenstand der Anmeldung ist ein Schreibgerät der im Oberbegriff des Hauptanspruchs genannten Art.The subject of the application is a writing instrument of the type mentioned in the preamble of the main claim.

Wie bei dem z. B. in der DE-OS 30 23 189 beschriebenen Röhrchenschreibgerät wird bei diesem Gerät flüssige Tinte über ein Röhrchen auf die Schreibunterlage gebracht. In dem Röhrchen ist ein draht- oder dochtförmiges Schreibelement angeordnet, das mit der Innenwandung des Röhrchens Tintenzufuhrkanäle bildet. Dieser Schreibdocht überragt das außen gelegene Rohrchenende und bildet mit diesem die Schreibspitze. Es ist gegen die Wirkung eines Federelementes axial im Röhrchen verschiebbar. Das Federelement sorgt dafür, daß die Schreibspitze in jeder Schreiblage mit der Schreibunterlage in Kontakt bleibt. Durch die sich beim Schreiben automatisch einstellende Axialbewegung des Schreibdochtes werden Verunreinigungen aus dem Schreibröhrchen entfernt. Außerdem unterstützt die beim Aufsetzen der Schreibspitze entstehende Pumpwirkung diesen Effekt.As with the z. B. tube-writing device described in DE-OS 30 23 189 in this device liquid ink is brought over a tube on the writing pad. A wire-shaped or wick-shaped writing element is arranged in the tube and forms ink supply channels with the inner wall of the tube. This writing wick protrudes beyond the outer end of the tube and forms the writing tip with it. It is axially displaceable in the tube against the action of a spring element. The spring element ensures that the writing tip remains in contact with the writing pad in every writing position. The axial movement of the writing wick that occurs automatically during writing removes contaminants from the writing tube. In addition, the pumping effect that occurs when the writing tip is attached supports this effect.

Bei dem Schreibgerät nach der DE-OS 30 23 189 besteht dieses Federelement aus einem tintendurchlässigen Schaumkunststoffkissen oder dgl.In the writing instrument according to DE-OS 30 23 189, this spring element consists of an ink-permeable foam plastic cushion or the like.

Dieses Schaumkunststoffkissen hat zwei Nachteile.This foam plastic pillow has two disadvantages.

Zum einen nimnt die Rückstellkraft des Kissens im Laufe der Benutzungszeit ab, wodurch die Funktionsfähigkeit des Schreibgerätes beeinträchtigt werden kann.On the one hand, the restoring force of the pillow decreases over the course of use, which can impair the functionality of the writing instrument.

Zum anderen hat ein Schaumkunststoffkissen der für die Elastizität erforderlichen Dichte nur eine beschränkte Tintendurchlässigkeit.On the other hand, a foam plastic cushion with the density required for elasticity has only limited ink permeability.

Um bei Schreibgeräten dieser Art eine bessere Offenlagerfähigkeit als bei bekannten Röhrchenschreibgeräten zu erzielen, müssen nicht pigmentierte Tinten anstelle der pigmentierten Tuschen verwendet werden. Letztere haben bekannterweise eine wesentlich höhere Deckkraft als nicht pigmentierte Tinten. Um dennoch mit den Tinten eine vergleichbare Schwärzung und Deckkraft der erzeugten Linien zu erreichen, ist eine intensivere Tintenabgabe erforderlich. Diese ist aber bei dem aus der DE-OS 30 23 189 hervorgehenden Schreibgerät insbesondere bedingt durch das Schaumkunststoffkisssen nicht gewährleistet.In order to achieve a better open shelf life with writing instruments of this type than with known tube writing instruments, non-pigmented inks must be used instead of the pigmented inks. The latter are known to have a much higher opacity than non-pigmented inks. In order to achieve a comparable blackening and opacity of the lines created with the inks, more intensive ink delivery is required. However, this is not guaranteed in the writing instrument resulting from DE-OS 30 23 189, particularly due to the foam plastic cushion.

So liegt der vorliegenden Erfindung die Aufgabe zugrunde, den Tintenfluß bei derartigen Schreibgeräten zu verbessern, insbesondere eine höhere Tintenmengenabgabe bezogen auf den Schreibweg zu erreichen.It is an object of the present invention to improve the ink flow in such writing instruments, in particular to achieve a higher ink output in relation to the writing path.

Gelöst wird diese Aufgabe allgemein durch eine Verbesserung des Tintenzuflusses im Bereich des inneren Endes des Schreibelementes.This object is generally achieved by improving the ink flow in the area of the inner end of the writing element.

Die einzelnen Maßnahmen sind Gegenstand der Ansprüche und anhand zweier Ausführungsbeispiele, die in der Zeichnung dargestellt sind, nachstehend im einzelnen erläutert. Im der Zeichnung zeigen :The individual measures are the subject of the claims and are explained in detail below using two exemplary embodiments which are illustrated in the drawing. In the drawing show:

  • Fig. 1 Axialschnitt eines erfindungsgemäß ausgebildeten Schreibgerätes im Bereich der Schreibspitze mit angedeuteter Verschlußkappe nach einem ersten Ausführungsbeispiel,1 axial section of a writing implement designed according to the invention in the area of the writing tip with the indicated closure cap according to a first embodiment,
  • Fig. 2 Teilaxialschnitt entsprechend der Darstellung gem. Fig. 1 eines erfindungesgemäßen Schreibgerätes nach einem zweiten Ausführungsbeispiel, jedoch ohne Verschlußkappe.Fig. 2 partial axial section according to the representation acc. Fig. 1 of an inventive writing instrument according to a second embodiment, but without a cap.
  • Fig. 3 Radialschnitt längs der Linie 111-111 in Figur 1.3 radial section along the line 111-111 in Figure 1.
  • Fig. 4 Radialschnitt längs der Linie IV-IV in Fig. 1.4 radial section along the line IV-IV in Fig. 1st
  • Fig. 5 Radialschnitt längs der Linie V-V in Fig. 5 undFig. 5 radial section along the line V-V in Fig. 5 and
  • Fig. 6 Radialschnitt längs der Linie VI-VI in Fig. 1.6 radial section along the line VI-VI in Fig. 1st

Folgende Elemente der erfindungsgemäßen Schreibgeräte sind in der Zeichnung erkennbar :

  • 10 Gehäuse
  • 11 Tintenleiter, vorzugsweise aus synthetischen Fasern
  • 11a Stirnfläche des Tintenleiters
  • 11 b Mantelfläche des Tintenleiters
  • 12 angefaste Klemmrippe
  • 13 Ringförmiger Luftraum
  • 19 Fassung
  • 20 Hülse
  • 21 Luftkanal
  • 22 Kapillarkanal
  • 23 Radialkanal
  • 24 Ringförmiger Kapillarspalt
  • 30 Schreibdocht
  • 30' Schreibdraht
  • 31, 31' Kugelkopf
  • 32, 32' Schreibröhrchen
  • 33 Kapillarkanäle
  • 33' Kapillarer Ringspalt
  • 40 Federelement-Ring
  • 41 Rückstellfeder
  • 42 Außenkapillare
  • 43 Innenkapillare
  • 50 Verschlußkappe
  • 51 Dichtsicke
The following elements of the writing instruments according to the invention can be seen in the drawing:
  • 10 housing
  • 11 ink conductors, preferably made of synthetic fibers
  • 11a face of the ink guide
  • 11 b lateral surface of the ink conductor
  • 12 chamfered clamping rib
  • 13 Annular airspace
  • 19 version
  • 20 sleeve
  • 21 air duct
  • 22 capillary channel
  • 23 radial channel
  • 24 Annular capillary gap
  • 30 writing wick
  • 30 'writing wire
  • 31, 31 'ball head
  • 32, 32 'writing tube
  • 33 capillary channels
  • 33 'Capillary annular gap
  • 40 spring element ring
  • 41 return spring
  • 42 outer capillary
  • 43 inner capillary
  • 50 sealing cap
  • 51 sealing bead

In der Zeichnung sind nur die für das Verständnis der Erfindung notwendigen Elemente dargestellt.In the drawing, only the elements necessary for understanding the invention are shown.

Nicht dargestellt ist der im hinteren Teil des Gehäuses 10 befindliche Tintenspeicher, aus welchem die flüssige Tinte mittels des Tintenleiters 11 in den vorderen Bereich der Schreibspitze auf Grund Kapillarwirkung des Tintenleiters transportiert wird.Not shown is the ink reservoir located in the rear part of the housing 10, from which the liquid ink is transported by means of the ink guide 11 into the front area of the writing tip due to the capillary action of the ink guide.

In das vordere Ende des Gehäuses 10 ist eine Fassung 19 mit einer koaxial eingepreßten Hülse 20 eingesetzt. Die Hülse 20 nimmt einerends das vorn gelegene Ende des Tintenleiters 11 auf und trägt andererends den im Schreibröhrchen 32 gelagerten Schreibdocht 30. Bei diesem Ausführungsbeispiel gemäß Fig. 1 besteht der Schreibdocht 30 aus vorzugsweise thermoplastischem Material und weist in seiner Mantelfläche axial verlaufende Kapillarkanäle 33 auf, wie der Schnitt gemäß Fig. 3 veranschaulicht.In the front end of the housing 10, a socket 19 is inserted with a coaxially pressed-in sleeve 20. The sleeve 20 receives on one end the front end of the ink conductor 11 and on the other side carries the writing wick 30 stored in the writing tube 32. In this exemplary embodiment according to FIG. 1, the writing wick 30 is preferably made of thermoplastic material and has axially extending capillary channels 33 in its outer surface. as the section of FIG. 3 illustrates.

An seinem inneren Ende ist der Schreibdocht 30 zu einem Kugelkopf 31 verdickt.At its inner end, the writing wick 30 is thickened to a spherical head 31.

Zwischen Schreibdocht 30 und Tintenleiter 11 ist in die Hülse 20 ein Federelement eingelegt, das aus einem Ring 40 mit einer in das Ringinnere ragenden Rückstellfeder 41 besteht. Diese Rückstellfedef ist so ausgebildet und angeordnet, wie der Schnitt gemäß Fig. 5 erkennen läßt, daß ungehindert die aus dem Tintenleiter 11 austretende Tinte zum Schreibdocht 30 gelangen kann. Um den Tintenfluß zu begünstigen, sind außerdem auf der äußeren und inneren Mantelfläche des Ringes 40 axial verlaufende Kapillarkanäle 42 und 43 angeordnet. Diese leiten die aus dem Tintenleiter 11 austretende Tinte zu radial verlaufende Sammelkanälen 23, welche in die Hülse 20 eingespritzt sind (vgl. Fig. 4). Damit ist gewährleistet, daß sich Tinte im Bereich des ringförmigen Kapillarspaltes 24 stets in ausreichender Menge sammelt. Von hier wandert diese über die Kapillarkanäle 33 des Schreibdochtes 30 zum vorderen Schreibspitzenende, um hier bei Berührung mit der Schreibunterlage austreten zu können.Between the writing wick 30 and the ink conductor 11, a spring element is inserted into the sleeve 20, which consists of a ring 40 with a return spring 41 projecting into the ring interior. This return spring is designed and arranged as the section according to FIG. 5 shows that the ink emerging from the ink conductor 11 can reach the writing wick 30 without hindrance. In order to promote the ink flow, 40 axially extending capillary channels 42 and 43 are also arranged on the outer and inner lateral surface of the ring. These guide the ink emerging from the ink conductor 11 to radially extending collecting channels 23 which are injected into the sleeve 20 (cf. FIG. 4). This ensures that ink always collects in sufficient quantity in the area of the annular capillary gap 24. From here, it travels over the capillary channels 33 of the writing wick 30 to the front end of the writing tip in order to be able to emerge here when it comes into contact with the writing pad.

Die Rückstellfeder 41 sorgt beim Schreibvorgang dafür, daß der längsbewegliche Schreibdocht 30 gegen die Schreibunterlage gedrückt wird, so daß in jeder Schreiblage der Kontakt mit der Schreibunterlage aufrechterhalten wird. Beim Auf- und Absetzen der Schreibspitze wird der Schreibdocht 30 gegen die Wirkung der Rückstellfeder 41 axial bewegt, wodurch einerseits durch mechanische Wirkung und andererseits durch Pumpwirkung Verunreinigungen aus dem Schreibröhrchen 32 entfernt werden.The return spring 41 ensures during the writing process that the longitudinally movable writing wick 30 is pressed against the writing pad, so that contact with the writing pad is maintained in every writing position. When the writing tip is put on and off, the writing wick 30 is moved axially against the action of the return spring 41, as a result of which impurities are removed from the writing tube 32 on the one hand by mechanical action and on the other hand by pumping action.

Auch bewirkt die Rückstellfeder 41 eine weiche Auflage der Schreibspitze auf der Schreibunterlage, die zu einem angenehmen Gefühl beim Zeichnen und Schreiben führt.The return spring 41 also brings about a soft support of the writing tip on the writing pad, which leads to a pleasant feeling when drawing and writing.

Dieser Effekt wird nach einem weiteren Vorschlag der Erfindung dadurch begünstigt, daß das Schreibröhrchen 32 mit einer Hartstoffz. B.Titan-Nitrid-Beschichtung versehen ist, die darüber hinaus für eine absolute Abriebfestigkeit und Korrisionssicherheit bei allen Temperaturen sorgt.This effect is promoted according to a further proposal of the invention in that the writing tube 32 with a hard material. B.Titanium nitride coating is provided, which also ensures absolute abrasion resistance and resistance to corrosion at all temperatures.

Zur weiteren Verbesserung des Tintenflusses vom nicht dargestellten Tintenspeicher über den Tintenleiter 11 zum inneren Ende des Schreibdochtes 30, ist die innere Mantelfläche der Hülse 20 mit vorzugsweise eingespritzten, axial verlaufenden Kapillarkanälen 22 versehen (vgl. Fig. 6). Hierdurch wird erreicht, daß die Tinte nicht nur über die Stirnfläche 11a des Tintenleiters sondern auch in nicht unerheblichem Maße über die Mantelfläche 11b des Tintenleiters geführt wird. Die über die Kapillarkanäle 22 zugeführte Tinte gelangt über die Radialkanäle 23 zum ringförmigen Kapillarspalt 24. Ferner kriecht die durch die Kapillaren 42 und 43 stirnseitig am Tintenleiter abgeführte Tinte zwischen dem Ring 40 und der Stirnseite der Bohrung in der Hülse 20 kapillar zu den Radialkanälen 23 und gelangt damit ebenfalls zum Ringspalt 24.To further improve the ink flow from the ink reservoir (not shown) via the ink conductor 11 to the inner end of the writing wick 30, the inner lateral surface of the sleeve 20 is provided with preferably injected, axially extending capillary channels 22 (cf. FIG. 6). It is hereby achieved that the ink is guided not only over the end face 11a of the ink guide but also to a not inconsiderable extent over the outer face 11b of the ink guide. The ink supplied via the capillary channels 22 reaches the annular capillary gap 24 via the radial channels 23. Furthermore, the ink discharged through the capillaries 42 and 43 on the end face of the ink conductor crawls capillary between the ring 40 and the end face of the bore in the sleeve 20 to the radial channels 23 and thus also reaches the annular gap 24.

Ein in der Hülse 20 vorgesehener Luftkanal 21 verbindet die Außenluft mit dem den Tintenleiter umgebenden ringförmigen Luftraum 13, der seinerseits mit dem nicht dargestellten Tintenspeicher in Verbindung steht, wodurch letzterer bei Tintenabgabe entlüftet wird.An air channel 21 provided in the sleeve 20 connects the outside air to the annular air space 13 surrounding the ink conductor, which in turn is connected to the ink reservoir (not shown), as a result of which the latter is vented when ink is dispensed.

Bei Verwendung nicht pigmentierter Tinte sind erfindungsgemäß ausgebildete Schreibgeräte wesentlich länger lagerfähig als herkömmliche, mit pigmentierter Tusche arbeitende Tuschegeräte. So können Lagerfähigkeiten von über einem Jahr erreicht werden, wenn, wie mit Fig. 1 angedeutet ist, die Schreibspitze mit einer Verschlußkappe 50 abgedeckt ist. Ein auf der Außenfläche der Hülse 20 aufliegender Dichtring 51 sorgt hierbei dafür, daß der Raum im Bereich des vorderen Schreibspitzenende abgedichtet ist und nur wenig Volumen hat.If non-pigmented ink is used, writing implements designed according to the invention can be stored for much longer than conventional inking implements working with pigmented ink. Storage capacities of over a year can thus be achieved if, as indicated with FIG. 1, the writing tip is covered with a closure cap 50. A sealing ring 51 resting on the outer surface of the sleeve 20 ensures that the space in the area of the front end of the writing tip is sealed and has only a small volume.

Für dünne Strichstärken empfiehlt sich die Verwendung eines Schreibdrahtes 30' anstelle des aus Kunststoff bestehenden Schreibdochtes 30, wie dies mit Fig. 2 veranschaulicht ist. Dieser Schreibdraht 30' begrenzt mit dem entsprechend dimensionierten Schreibröhrchen 32' einen kapillaren Ringspalt 33', über welchen in gleicher Weise wie mit den kapillaren Kanälen 33 Tinte zur Schreibspitze transportiert wird. An sein inneres Ende ist ein vorzugsweise aus Kunststoff bestehender Kugelkopf 31' angespritzt, an welchem wiederum die Rückstellfeder 41 anliegt.For thin line widths, the use of a writing wire 30 'is recommended instead of the writing wick 30 made of plastic, as is illustrated with FIG. 2. With the appropriately dimensioned writing tube 32 ', this writing wire 30' delimits a capillary annular gap 33 ', via which ink is transported to the writing tip in the same way as with the capillary channels 33. A ball head 31 ′, preferably made of plastic, is injection molded onto its inner end, against which the return spring 41 bears.

Im übrigen entspricht die Funktionsweise dieses Schreibgerätes derjenigen des Schreibgerätes gem. Fig.1.Otherwise, the operation of this writing instrument corresponds to that of the writing instrument according to. Fig. 1.

Das erfindungsgemäß gestaltete Kapillarsystem bewirkt auf Grund seiner großen Wirkfläche und seines großen Speichervolumens, daß das Schreibmittel ohne Verzögerung, gleichmäßig und in ausreichender Menge der Schreibspitze zugeführt wird.Due to its large effective area and its large storage volume, the capillary system designed according to the invention ensures that the writing medium is fed to the writing tip without delay, evenly and in sufficient quantity.

Außerdem ist das Schreibgerät so gestaltet, daß auf Grund seines einfachen, fertigungsgerechten Aufbaus eine kostengünstige Herstellung ermöglicht ist. So besteht das Schreibgerät im wesentlichen nur aus dem Gehäuse 10, der Fassung 19, der Hülse 20 mit Schreibröhrchen 32 und Schreibdocht 30, dem Federelement mit Ring 40 und Rückstellfeder 41, dem Tintenleiter 11 und dem nicht dargestellten Tintenspeicher. Alle Teile sind so ausgebildet, daß sie mit einfachen Werkzeugen hergestellt und montiert werden können.In addition, the writing instrument is designed in such a way that, due to its simple, production-oriented structure, it is possible to produce it inexpensively. So the writing instrument consists essentially of the housing 10, the socket 19, the sleeve 20 with the writing tube 32 and the wick 30, the spring element with ring 40 and return spring 41, the ink conductor 11 and the ink reservoir, not shown. All parts are designed so that they can be manufactured and assembled with simple tools.

Claims (9)

1. A writing instrument for liquid ink having a small writing tube (32) and a wire or wick shaped writing element (30) axially displaceable inside this, the end of which projecting from the small writing tube forms with the latter the writing tip, and the internal end of which, in the form of a head (31) or the like, bears against a spring element (41), characterized in that the spring element consists of a collar (40) surrounding the writing element (30), with a space between them, having a return spring (41) projecting from the inside of the collar (40), which is so formed and arranged that ink passes unhindered through the collar (40) to the writing element (30).
2. A writing instrument according to Claim 1, characterized in that the collar (40) and return spring (41) are a one-piece component made of synthetic material and preferably of thermoplastic material.
3. A writing instrument according to Claim 1 or 2, characterized in that a holder (19) with a coaxial socket (20) is inserted in the front end of the writing apparatus casing (10), which socket comprises a rear through hole to receive the ink feeder (11) and a front through hole of smaller cross-section to receive the writing tube (32) with the writing element (30), and in that the spring element (40, 41) is placed in the rear through hole between the ink feeder (11) and writing element (30).
4. A writing instrument according to Claim 3, characterized in that axially directed capillary channels (42, 43) are arranged on the inner and/or outer side surfaces of the collar (40).
5. A writing instrument according to Claim 4, characterized in that radially directed collecting channels (23) are provided in the bottom surface of the rear through hole of the socket (20), which lead centrally to an annular capillary slit (24) between the writing element (30) and the front through hole of the socket (20).
6. A writing instrument according to Claim 5, characterized in that the through hole of the socket (20) comprises axially directed capillary channels (22) or cut structures directed substantially axially which open out into the radially directed collecting channels (23).
7. A writing instrument according to one of Claims 1 to 6,, characterized in that the writing element is a writing wick (30) consisting of thermoplastic material, the inner end of which is thickened into a ball-head (31) and whose side surface comprises axially directed capillary channels (33).
8. A writing apparatus according to one of Claims 1 to 6, characterized in that the writing element is a metallic writing wire (30'), on the inner end of which a ball-head (31') is moulded, preferably made of synthetic material, and which delimits with the small writing tube (32') a circular capillary slit (33').
9. A writing apparatus according to one of Claims 1 to 8, characterized in that the metallic small writing tube (32, 32') is coated with a hard wearing material, preferably titanium nitride.
EP86903205A 1985-05-09 1986-05-09 Recording unit Expired EP0222844B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3516646 1985-05-09
DE8513683U DE8513683U1 (en) 1985-05-09 1985-05-09 Writing implement
DE3516646 1985-05-09

Publications (2)

Publication Number Publication Date
EP0222844A1 EP0222844A1 (en) 1987-05-27
EP0222844B1 true EP0222844B1 (en) 1989-04-26

Family

ID=25832086

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86903205A Expired EP0222844B1 (en) 1985-05-09 1986-05-09 Recording unit

Country Status (5)

Country Link
US (1) US4776718A (en)
EP (1) EP0222844B1 (en)
JP (1) JPS63500090A (en)
DE (1) DE8513683U1 (en)
WO (1) WO1986006686A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2663589A1 (en) * 1990-06-20 1991-12-27 Graphoplex Sa PLOTTER DEVICE FOR TUBULAR POINT STYLOGRAPHER.
EP0622035B1 (en) * 1993-04-30 1999-03-03 Henlopen Manufacturing Co., Inc. Applicator system for fluid cosmetic material
JP3796287B2 (en) * 1996-02-15 2006-07-12 ゼブラ株式会社 Writing instrument
EP1157857A1 (en) * 1998-11-27 2001-11-28 Hori R & D Co., Ltd. Writing instrument and method of producing the same
US8485749B2 (en) 2009-07-20 2013-07-16 Crayola Llc Ink delivery systems
WO2020231852A1 (en) * 2019-05-10 2020-11-19 Henkel IP & Holding GmbH Applicator for hazardous materials

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2029152A (en) * 1934-09-22 1936-01-28 Teofil L Bonkowski Ink eradicating device
US3113336A (en) * 1962-01-03 1963-12-10 Langnickel Arvid Ink marker
US3221360A (en) * 1963-03-11 1965-12-07 Blaisdell Pencil Company Marking device construction
US3680968A (en) * 1970-02-24 1972-08-01 Gilbert Schwartzman Method of correcting typewritten impressions
NL7108297A (en) * 1971-06-16 1972-12-19
US3832071A (en) * 1973-03-21 1974-08-27 P Chaney Dispenser for error correcting fluids
DE2605873C2 (en) * 1976-02-13 1982-02-25 Standardgraph Filler & Fiebig Gmbh, 8192 Geretsried Process for increasing the abrasion resistance of writing tubes
GB1564742A (en) * 1976-10-01 1980-04-10 Sakura Color Prod Corp Ball-point pen for a low viscosiy ink
US4364684A (en) * 1979-06-21 1982-12-21 Pentel Kabushiki Kaisha Writing instrument
JPS644541Y2 (en) * 1980-10-17 1989-02-06
JPS6011398A (en) * 1983-06-30 1985-01-21 ぺんてる株式会社 Pen point for writing utensil

Also Published As

Publication number Publication date
EP0222844A1 (en) 1987-05-27
US4776718A (en) 1988-10-11
JPS63500090A (en) 1988-01-14
DE8513683U1 (en) 1986-09-04
WO1986006686A1 (en) 1986-11-20

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