EP0469465A1 - Instrument d'écriture à encre - Google Patents

Instrument d'écriture à encre Download PDF

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Publication number
EP0469465A1
EP0469465A1 EP91112479A EP91112479A EP0469465A1 EP 0469465 A1 EP0469465 A1 EP 0469465A1 EP 91112479 A EP91112479 A EP 91112479A EP 91112479 A EP91112479 A EP 91112479A EP 0469465 A1 EP0469465 A1 EP 0469465A1
Authority
EP
European Patent Office
Prior art keywords
ink
capillary
channel
ink supply
compensation
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
EP91112479A
Other languages
German (de)
English (en)
Other versions
EP0469465B1 (fr
Inventor
Bruno Künzler
Udo Obersteller
Hans-Peter Schreiber
Günter Ulrich
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.)
Pelikan GmbH
Original Assignee
Pelikan GmbH
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 Pelikan GmbH filed Critical Pelikan GmbH
Publication of EP0469465A1 publication Critical patent/EP0469465A1/fr
Application granted granted Critical
Publication of EP0469465B1 publication Critical patent/EP0469465B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B43K8/02—Pens with writing-points other than nibs or balls with writing-points comprising fibres, felt, or similar porous or capillary material
    • B43K8/04—Arrangements for feeding ink to writing-points

Definitions

  • the invention relates to an ink writing device with a writing tip, an ink storage space and an ink regulator arranged between the ink storage space and the writing tip with a capillary ink channel for supplying ink to the writing tip and with a group of capillary compensation chambers which are delimited by transverse ribs and which are connected by a capillary channel , in particular the ink channel are connected to the ink supply chamber and are connected to a non-capillary ventilation channel which is connected to the ink supply chamber via a compensation chamber and a control gap adjoining the compensation chamber.
  • Writing instruments of this type are known from DE-PS 26 09 668 and DE-OS 35 30 906.
  • an ink supply is reliably held with the aid of the ink regulator without using an internal fiber capillary reservoir or a capillary cell.
  • the ink regulator picks up ink emerging from the ink reservoir due to changes in atmospheric pressure or temperature, thereby preventing ink from leaking at the nib.
  • a sufficient amount of ink is fed to the writing tip via the ink channel, so that when using different writing tips, such as hard or soft fiber pens, ballpoint pens or nibs, smooth, uniform writing is possible.
  • the volume of the ink supply space and thus the largest possible ink supply is dependent on the volume of the capillary compensation chambers. If the ink supply space is too large, if the temperature or atmospheric pressure changes, more ink can be displaced from the ink supply space than the compensation chambers can accommodate, so that there is an undesired leakage of ink at the writing tip.
  • the number of compensation chambers and, accordingly, the axial length of the ink regulator are increased in the known ink writing devices to such an extent that the ink channel must be guided separately from the compensation chambers to the writing tip in order to ensure an adequate supply of the writing tip.
  • the ink channel is formed in an ink supply rod which penetrates the ink regulator centrally, making the manufacture of the ink writing device more expensive.
  • the invention has for its object to provide an ink writing device of the type mentioned, which is easy to manufacture and can have a large ink supply space.
  • capillary compensation chambers which are adjacent to the ink supply chamber and which are connected to the ventilation duct and each of which is connected with a capillary gap to an ink supply duct leading to the ink supply chamber and having a lower capillarity than the capillary gaps.
  • the ink channel can cut the group of compensation chambers adjacent to the writing tip, whereby the manufacture of the ink regulator and the assembly of the writing device are simplified.
  • the overall length of the group of compensation chambers adjacent to the writing tip, which is delimited to the ink supply space by the capillary control gap, including the writing tip which is connected to the compensation chambers via the ink channel, can be limited to a length for the entire compensation volume without disadvantage for an optimum Supply of the writing tip with ink and a favorable control behavior is particularly suitable.
  • the additional compensation volume required is created by the second group of compensation chambers adjacent to the ink space, each of which is connected to the ink space via a capillary gap and can therefore absorb or release ink independently of the control behavior of the control gap. It has been shown in practice that the combination according to the invention of the two groups of compensation chambers, which are connected separately from one another to the ink chamber, results in a very reliable, quick response and a uniform ink flow regulating behavior which is equally suitable for different types of writing tips.
  • the group of compensation chambers adjacent to the ink space can be expanded depending on the desired ink space size, without adversely affecting the control behavior.
  • the capillary control gap opens into the ink supply channel.
  • the ink channel can extend parallel to the ink supply channel up to the ink supply space.
  • the ink channel can consist of an axially parallel, radially outwardly open capillary groove, which runs within the compensation chambers and in the wall of the ink supply channel. This configuration contributes to a simple manufacture of the ink regulator and ensures an uninterrupted capillary connection from the ink supply space to the writing tip, which is not interrupted by air pockets can be.
  • the ink channel opens into a bore which is filled with porous material, in particular a fiber material, which surrounds the connecting end of the writing tip which projects into the bore .
  • porous material in particular a fiber material
  • the illustrated ink writing device has a cylindrical shaft 1 which surrounds the ink supply space 2 and is closed at its end, not shown.
  • An ink regulator 3 and a shaft front part 4 are inserted into the open end of the shaft 1 shown.
  • the shaft front part 4 is firmly connected to the shaft 1 and contains a writing tip 5 which consists of a fiber wick.
  • the writing tip 5 is held by ribs 6 arranged in a star shape, between which air channels are provided which connect a cavity 7 in the interior of the front part 4 of the shaft to the atmosphere.
  • the ink regulator 3 consists of a body of cylindrical basic shape, the outer diameter of which essentially corresponds to the inner diameter of the shaft 1.
  • the end of the ink regulator 3 facing the writing tip 5 engages with a reduced diameter section 8 in the cavity 7 and has a central bore 9 into which the connecting end of the writing tip 5 projects.
  • the bore 9 contains a porous material consisting of fibers, which encloses the connection end of the writing tip 5 and ensures an effective ink flow to the writing tip 5.
  • the deformability of the porous fiber material serves to compensate for manufacturing-related dimensional deviations.
  • annular grooves are worked in, which are separated from one another by thin transverse ribs and form several groups of compensation chambers 10, 11, 12, 13.
  • the axial width of the equalizing chambers 10 to 13 corresponds to the capillary action desired in each case.
  • the width of the equalization chambers 13 in turn corresponds approximately to that of the equalization chambers 11.
  • the equalization chambers 13 In contrast to the equalization chambers 10 to 12, which are arranged concentrically to the cylinder axis of the ink regulator 3, the equalization chambers 13 have a common axis which runs parallel to the cylinder axis of the ink regulator 3.
  • the equalizing chambers 13 thus have an eccentric position, their greatest radial depth being in the image plane of the left half of the image and their smallest radial depth being in the image plane of the right half of the image.
  • the ring channel 15 is connected to the cavity 7 via a ventilation slot 16, which is located on the side of the ink regulator 3 opposite the ventilation channel 14.
  • the ink regulator 3 On the side opposite the ventilation channel, the ink regulator 3 has a capillary ink channel 17 which extends from the ink supply space 2 to the most distant compensation chamber 10 and opens into the bore 9 within the compensation chambers 10.
  • the ink channel 17 is in direct connection with the compensation chambers 10 to 12 since it cuts through them, and is dimensioned so narrow that ink displaced into the compensation chambers 10 to 12 can be sucked off again via the ink channel 17.
  • the compensation chambers 13 are each connected to the ink supply channel 18 through a capillary gap 19, which is formed by their eccentric position.
  • the ink supply channel 18 is open to the ink supply space 2.
  • the ink supply channel 18 is separated from the compensation chambers 12 by a control gap 20, the width of which is slightly larger than the width of the ink channel 17.
  • the ink passes from the ink supply space 2 through the capillary ink channel 17 into the bore 9 filled with porous fiber material and from there into the writing tip 5.
  • the ink also fills the ink supply channel 18 during writing, whereby it is retained at the capillary gap 19.
  • air penetrating between the ribs 6 into the cavity 7 can pass through the ventilation slot 16, the annular channel 15 and the ventilation channel 14 into the compensation chamber 12 adjoining the control gap 20 and from there into Form small bubbles through the control gap 20 and rise in the ink supply channel 18 to the ink supply space 2.
  • the distance of the control gap 20 from the end of the writing tip which comes into contact with the paper is adapted to the desired control behavior. Both increasing and decreasing this distance would result in less favorable control behavior.
  • ink If ink is displaced from the ink supply space as a result of an external pressure drop or a temperature increase, it can penetrate into the compensation chambers 10 to 12 via the ink channel 17 and gradually fill these from the top and downwards. At the same time, part of the displaced ink volume can penetrate into the compensation chambers 13 via the capillary gaps 19. In this way, a comparatively large volume of ink can be stored in the equalization chambers 10 to 13 without the ink leakage behavior at the writing tip 5 changing.
  • the ink stored in the compensation chambers 10 to 13 is returned to the ink supply space 2 in the same way, since air can only get into the ink supply space 2 again via the control gap 20 when the ink runs out the compensation chamber 12 adjacent to the control gap 20 is suctioned off. If the pressure and temperature conditions do not lead to the emptying of the equalizing chambers 10 to 13, then the equalizing chambers 10 to 13 are emptied when writing, since the ink is first drawn off from the equalizing chambers 10 to 13 before there is a further inflow from the ink supply space.
  • the ink writing device described can be produced in a simple and inexpensive manner, since the ink regulator with its outwardly open longitudinal and transverse grooves can be easily manufactured as a one-piece component and does not require any special assembly effort. This is made possible above all by the arrangement and design of the equalizing chambers described, since a complex ink channel penetrating the ink regulator separately from the equalizing chambers is not necessary.

Landscapes

  • Pens And Brushes (AREA)
EP91112479A 1990-08-01 1991-07-25 Instrument d'écriture à encre Expired - Lifetime EP0469465B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4024382A DE4024382C1 (fr) 1990-08-01 1990-08-01
DE4024382 1990-08-01

Publications (2)

Publication Number Publication Date
EP0469465A1 true EP0469465A1 (fr) 1992-02-05
EP0469465B1 EP0469465B1 (fr) 1995-05-10

Family

ID=6411422

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91112479A Expired - Lifetime EP0469465B1 (fr) 1990-08-01 1991-07-25 Instrument d'écriture à encre

Country Status (3)

Country Link
EP (1) EP0469465B1 (fr)
JP (1) JP2524018B2 (fr)
DE (2) DE4024382C1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997012765A1 (fr) * 1995-10-02 1997-04-10 Rotring International Gmbh & Co. Kg Instrument d'ecriture a encre
WO1998017482A1 (fr) * 1996-10-22 1998-04-30 Bic Corporation Instrument d'ecriture sans reservoir
US6582144B1 (en) 1999-07-19 2003-06-24 Mitsubishi Pencil Kabushikikaisha Writing implement
EP3053755A4 (fr) * 2013-10-21 2017-01-25 V Spark Co., Ltd. Mécanisme de tamponnage de fluctuation de pression, et applicateur

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9310762U1 (de) * 1993-07-21 1994-11-24 Staedtler Fa J S Schreib- oder Zeichengerät mit Schreibmittel-Ausgleichssystem
WO2001043985A1 (fr) * 1999-12-16 2001-06-21 Mitsubishi Pencil Kabushiki Kaisha Instrument d'ecriture a collecteur
US7850382B2 (en) 2007-01-18 2010-12-14 Sanford, L.P. Valve made from two materials and writing utensil with retractable tip incorporating same
US7488130B2 (en) 2007-02-01 2009-02-10 Sanford, L.P. Seal assembly for retractable instrument
US8226312B2 (en) 2008-03-28 2012-07-24 Sanford, L.P. Valve door having a force directing component and retractable instruments comprising same
US8221012B2 (en) 2008-11-07 2012-07-17 Sanford, L.P. Retractable instruments comprising a one-piece valve door actuating assembly
US8393814B2 (en) 2009-01-30 2013-03-12 Sanford, L.P. Retractable instrument having a two stage protraction/retraction sequence

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1230331B (de) * 1961-01-21 1966-12-08 Faber Castell A W Fuellfederhalter mit eingekapseltem, exzentrische Tintenringkammern aufweisendem Tintenleiter
DE3530906A1 (de) * 1984-08-29 1986-03-13 Pilot Ink Co., Ltd., Nagoya, Aichi Schreibstift

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3951555A (en) * 1975-04-14 1976-04-20 The Parker Pen Company Modular writing pen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1230331B (de) * 1961-01-21 1966-12-08 Faber Castell A W Fuellfederhalter mit eingekapseltem, exzentrische Tintenringkammern aufweisendem Tintenleiter
DE3530906A1 (de) * 1984-08-29 1986-03-13 Pilot Ink Co., Ltd., Nagoya, Aichi Schreibstift

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997012765A1 (fr) * 1995-10-02 1997-04-10 Rotring International Gmbh & Co. Kg Instrument d'ecriture a encre
US5938362A (en) * 1995-10-02 1999-08-17 Rotring International Gmbh & Co. Kg Writing implement for ink
WO1998017482A1 (fr) * 1996-10-22 1998-04-30 Bic Corporation Instrument d'ecriture sans reservoir
US5906446A (en) * 1996-10-22 1999-05-25 Bic Corporation Fillerless writing instrument
US6582144B1 (en) 1999-07-19 2003-06-24 Mitsubishi Pencil Kabushikikaisha Writing implement
EP3053755A4 (fr) * 2013-10-21 2017-01-25 V Spark Co., Ltd. Mécanisme de tamponnage de fluctuation de pression, et applicateur
US9969205B2 (en) 2013-10-21 2018-05-15 Chemicos Creations Ltd. Pressure fluctuation buffering mechanism and applicator

Also Published As

Publication number Publication date
JPH04226797A (ja) 1992-08-17
DE59105424D1 (de) 1995-06-14
EP0469465B1 (fr) 1995-05-10
DE4024382C1 (fr) 1992-08-27
JP2524018B2 (ja) 1996-08-14

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