EP2199086A1 - Cartouche d'encre - Google Patents

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Publication number
EP2199086A1
EP2199086A1 EP09177595A EP09177595A EP2199086A1 EP 2199086 A1 EP2199086 A1 EP 2199086A1 EP 09177595 A EP09177595 A EP 09177595A EP 09177595 A EP09177595 A EP 09177595A EP 2199086 A1 EP2199086 A1 EP 2199086A1
Authority
EP
European Patent Office
Prior art keywords
ink tank
ink
tank according
grinding
drive
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.)
Withdrawn
Application number
EP09177595A
Other languages
German (de)
English (en)
Inventor
Frank Otte
Peter Schmitt
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.)
KBA Metronic GmbH
Original Assignee
KBA Metronic 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 KBA Metronic GmbH filed Critical KBA Metronic GmbH
Publication of EP2199086A1 publication Critical patent/EP2199086A1/fr
Withdrawn legal-status Critical Current

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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
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B41J2/17503—Ink cartridges
    • B41J2/17513—Inner structure

Definitions

  • the invention relates to an ink tank for an ink jet printer.
  • ink jet printers and in particular of continuous ink jet printers for industrial applications, has been known for many years.
  • a number of different inks are used here for the labeling of packaging, which must have a number of desirable properties, such as shortest drying time, good adhesion to a wide variety of materials and corresponding resistance to external influences such as light, heat, solvents, etc.
  • inks which have inorganic pigments such as metal oxides or metal sulfates
  • pigments may e.g. be ceramic nature, such as titanium dioxide, which is used as inexpensive white pigment in a variety of printing inks, these pigments have their desired properties, such as optical properties, only from a certain minimum sizes in the micrometer range, so that eliminates the use of nanoscale pigments or lead to unsatisfactory results.
  • pigments in particular ceramic or oxidic pigments with particle sizes in the micrometer range, can only be adequately dispersed permanently in an ink solution, since these pigments, due to their specific weight and surface properties, tend to agglomerate and / or sediment.
  • paddle stirrers which move the ink continuously or alternately in a circle around a cylinder axis and thus counteract sedimentation.
  • the disadvantage here is that certain ink areas of the reservoir, in particular the ink areas are not or only inadequately detected directly on the walls or in edges of the reservoir so that sedimentation can be done very often at these locations.
  • a disadvantage of this type of stirring further, that agglomerated pigments are not or only insufficiently crushed. Such agglomerated pigments must be screened out via appropriate filters, so that these agglomerates do not reach the region of the nozzles via the ink feed, which clogs the nozzles, leads to failure of the inkjet printer and requires extensive cleaning.
  • a container of a dispersing device suitable for color wherein inside the container, a grinding device is arranged and wherein the grinding device comprises freely movable grinding balls and wherein the grinding balls are movable by means of a dipping into a collection of grinding balls rotation element.
  • a comminuting or mixing device in which there are working substance bodies which can be set in motion by means of externally acting traveling magnetic fields and in this way be able to comminute or mix a material located in the device.
  • An ink circuit for pressurizing a pigment ink for ink jet printer is known, wherein a bar magnet is arranged in a main container, which cooperates with a magnet arranged outside the main container, cooperating with a stepper motor and helps to maintain a homogeneity of ink by rotation of the stepping motor.
  • the object of the invention is therefore to provide an ink tank to avoid the disadvantages mentioned, with which it is possible to use pigmented inks easily in a continuous ink jet printer and permanently counteract sedimentation and / or agglomeration of the pigments in the ink or to effectively remove and dissolve already settled sediments and agglomerations.
  • the object is achieved by providing an ink tank for the ink to be used, which has at least one grinder instead of a simple agitator for crushing agglomerated ink pigments and further to prevent or dissolve or remove deposits or sedimentation of ink pigments in the reservoir.
  • the core idea of the invention is in this case that by means of at least one grinder such pigments, which have settled for example due to a longer standstill of the inkjet printer in the ink tank and / or have joined to larger agglomerates, not only stirred in the usual way, but also by the crushed at least one grinder agglomerates again be, so that sets a homogeneous pigment distribution.
  • the effects of agglomeration and sedimentation should also be prevented during operation with the at least one grinder.
  • the grinding of the agglomerates and sediments also results in a desired particle size distribution of the pigments, in particular which can essentially correspond to that of the starting ink.
  • the ink tank in a substantially cylindrical shape, in particular over most of its length, preferably over at least 50 percent of its total length, in the form of a cylinder.
  • This essentially depends on the fact that the interior of the ink tank is cylindrical in this way, the outer shape can be arbitrary.
  • such an ink tank can be arranged within an inkjet printer so that its cylinder axis is perpendicular or at least substantially perpendicular.
  • the tapered portion of the reservoir extends over a length of at most 90%, more preferably between 10% and 50% of a height of the ink tank.
  • At least the inner regions of the ink tank which come into contact with the ink in such a way that between adjacent areas, in particular between cylindrical and tapered areas, flowing transitions are formed without edges and grooves.
  • the areas of the ink tank which come into contact with the ink and the tapered area need not be in any particular relation to each other, but preferably, the area which comes into contact with ink includes the tapered area to be occupied by the ink tank Exploiting volume to the greatest extent possible.
  • At least one grinder it can be provided inside the ink tank, at least in the area of the ink outlet, in particular thus in its lower region, movable bodies as grinding media, for example preferably balls to provide and move them by means of a drive, preferably against each other in particular, so that a mixing of the ink with the pigments and trituration and a break-up of agglomerated pigments, in particular by impact processes between the bodies is effected.
  • movable bodies as grinding media, for example preferably balls to provide and move them by means of a drive, preferably against each other in particular, so that a mixing of the ink with the pigments and trituration and a break-up of agglomerated pigments, in particular by impact processes between the bodies is effected.
  • the ink tank at least at the ink outlet side, in particular at the lower end, for example by means of a sieve or a filter to be closed so that on the one hand, the movable body are effectively retained by the sieve inside the ink tank and on the other hand, the ink can flow through the sieve openings substantially unhindered.
  • the grinding media at least partially at least a radius of curvature which is smaller than a minimum radius of curvature of smooth, merging surfaces of an inner space of the ink tank.
  • all grinding media are balls which have a correspondingly small radius.
  • some or all of the grinding bodies have a non-spherical shape, but which has areas which have a smaller radius of curvature than said areas.
  • balls of different radii It is also not necessary that all grinding media be shaped in such a way, it is only important that no area of the ink tank that comes into contact with ink has a curvature that is so small that there are places on these surfaces that none Grinding media can be achieved.
  • An edge of a grinding body is to be regarded as a very small radius of curvature and therefore also fulfills the criterion mentioned above.
  • the preferred case is the case in which only balls with the same radius serve as grinding media.
  • the movable bodies may be e.g. be made of an abrasion-resistant and at least against the ink used chemically inert material such as glass, ceramic, stainless steel, filled plastic, etc., whereby abrasion of the moving body with each other and against the pigments to be rubbed and / or a chemical influence of the ink composition is avoided ,
  • the movable bodies can represent spheres having an at least substantially equal diameter.
  • the balls can also be designed with different diameters.
  • the movable bodies are loosely located in the interior of the ink tank and are set in motion by the drive already mentioned, ie are movable and / or moved.
  • the movable body by means of an externally acting on the ink tank, in particular outside of the ink tank arranged vibrating device are set in motion, or are set in motion.
  • located in the interior of the ink tank movable grinding bodies are irregularly shaken up and thereby thrown against the wall of the ink tank. In this way, they can dissolve and break up, for example, any pigment deposits or sedimentations present there, as well as collide with one another, causing agglomerates to break up and be ground.
  • the vibrator device may e.g. be formed by plungers that strike from the outside against the wall of the ink tank. These plungers may e.g. be driven electromagnetically or by other actuators.
  • a drive it may also be provided to move the movable bodies by means of a rotor element, for example an impeller, which dips into and drives the accumulation of the movable body, which is preferably located near the outlet, so preferably at the bottom of the ink tank.
  • a rotor element for example an impeller
  • This rotor element may be arranged in a possible embodiment on a shaft, for example at its lower end, which can be set in rotation by means of a controllable drive / motor.
  • This actual drive / motor can preferably be arranged outside the ink tank, eg above, in particular above it, wherein the shaft extends through an upper opening in a cover surface or a lid of the ink tank.
  • the object is achieved in another embodiment also with a method or an ink tank in which the movable body without contact, e.g. be moved by magnetic fields.
  • Such fields may e.g. outside the ink tank, e.g. with at least one coil arranged around the tank or with at least two coils, for example those which lie opposite on both sides of the ink tank or are arranged around the ink tank.
  • Such a field generated outside the ink tank can then act through the wall of the ink tank inside the ink tank and there the grinding media directly or indirectly by means provided in the ink tank driving means, e.g. set a rotating element in motion.
  • a rotor element for example, again an impeller can be driven without contact by means of such an electromagnetic field, in particular a changing field.
  • the rotor element, in particular the impeller for example in a symmetrical or asymmetrical arrangement, comprises magnetizable or magnetic regions or short-circuited conductor loops which interact with the field generated externally and acting in the ink tank.
  • at least one electric coil can be arranged around the ink tank, through which, in the case of a corresponding electrical control with an alternating current, a magnetic element driving the rotor element or impeller is disposed Alternate field is generated.
  • the rotor element can in this case be rotatably mounted in the interior of the ink tank, in particular in a lower region near the outlet.
  • the grinding media or a certain proportion of all grinding media wholly or partly formed of a magnetic or magnetizable material whereby it is possible to move the grinding media directly without an additional impeller by means of external magnetic, in particular changing fields
  • the media can e.g. also have a magnetic or magnetizable core region and an inert shell arranged around it. For example, by fast switching of the magnetic field or by a traveling field so the bodies can be moved.
  • the ink tank further has at least one opening through which an ink can be introduced into the ink tank, or one from which the ink can be taken out.
  • the ink tank preferably has in each case an inlet through one opening and an outlet for the ink through the other opening, which are preferably attached to the mutually opposite cover surfaces of the substantially cylindrical reservoir.
  • the ink tank has a lower, in particular the ink enclosing storage area and an upper, in particular over the ink level arranged lid portion which closes the storage area.
  • FIG. 1 shows a first embodiment according to the invention of an ink tank 1 for use, for example, in a continuous ink jet printer.
  • the ink tank 1 consists for example of a lower part 1a, which essentially serves as the actual reservoir for the ink and an upper part 1 b, which essentially serves as a lid.
  • the lower part 1a has, for example, an outlet 5 through which the ink 2 can be taken out for use in the ink jet printer.
  • the outlet 5 is in this case connected via a sieve or a filter cartridge 4 with the interior of the ink tank 1 that the inner surfaces of the ink tank 1 in the area 1 d has a particular continuous surface with flowing transitions without edges or grooves.
  • the radii of curvature 1 e of the transitions and the inner surfaces, in particular in the lower region are preferably chosen so that they are always larger than the largest Curvature radii (r) of the movable bodies 40 are, but at least greater, than at least one radius of curvature (r) of a part of the grinding bodies (40).
  • a number of freely movable grinding elements 40 are arranged in the interior of the ink tank 1 in the region of the outlet, which can have contact with each other as well as with the inner walls of the ink tank 1.
  • vibrating elements 60 acting on the outside of the ink tank 1 are provided, which can vibrate the ink tank 1, for example, so that the grinding media 40 therein are displaced in irregular movements 102.
  • the grinding media 40 abut against the inner walls of the ink tank 1 and against each other, whereby pigment sedimentations are broken and removed and agglomerations are ground.
  • the vibrating elements 60 comprise, for example, electromagnetic oscillators 61, which act on the ink tank 1 in the direction 101 via corresponding plungers 62.
  • the upper part 1 b of the ink tank 1 is for example connected via a corresponding screw or plug connection 1 c detachably connected to the lower part 1a, whereby the possibility is created to empty the ink tank 1 in a simple manner and / or refill and / or clean and / or replace the grinding media 40 or fill it. It may be expedient, in particular when using inks with volatile solvents on the upper part 1 b to provide a filling opening 6 for refilling the ink tank 1.
  • the impeller 3b is, for example, fixedly connected to a shaft 3a, which is driven by means of a drive 3 mounted outside of the ink tank 1.
  • a shaft 3a which is driven by means of a drive 3 mounted outside of the ink tank 1.
  • the upper part 1 b for the shaft 3a on a passage 1 f which may be provided with a seal 1 g at the same time, so that even with a movement of the shaft 3 a leakage of ink or vapors, such as solvent vapors is effectively prevented.
  • the grinding media 40 by means of a freely movable, immersed in the grinding media 40 impeller 30.
  • the impeller 30 in this case magnetized or magnetizable areas or short-circuited conductor loops 30b, which may be incorporated, for example, in the wings 30a of the impeller 30.
  • the drive of the impeller 30 then takes place, for example, via an external drive 50 which, for example, has controllable electromagnets 51 arranged around the ink tank 1 in the region of the impeller 30.
  • an external drive 50 which, for example, has controllable electromagnets 51 arranged around the ink tank 1 in the region of the impeller 30.
  • a force is exerted on the impeller 30 by the electromagnetic interaction, whereby this can be set in a rotational movement in the direction 100 and whereby the grinding media are moved.
  • the impeller 30 may be expedient to arrange the impeller 30 via a bearing 30c on a shaft 72 of a centering insert 70.
  • the centering insert 70 can also Distance elements 71 have, which center the centering insert 70 and mounted on its shaft 72 impeller 30 substantially in the cylinder axis of the ink tank 1.

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  • Ink Jet (AREA)
EP09177595A 2008-12-19 2009-12-01 Cartouche d'encre Withdrawn EP2199086A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200810063718 DE102008063718B4 (de) 2008-12-19 2008-12-19 Tintentank mit Mahlwerk

Publications (1)

Publication Number Publication Date
EP2199086A1 true EP2199086A1 (fr) 2010-06-23

Family

ID=42035702

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09177595A Withdrawn EP2199086A1 (fr) 2008-12-19 2009-12-01 Cartouche d'encre

Country Status (2)

Country Link
EP (1) EP2199086A1 (fr)
DE (1) DE102008063718B4 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115384193A (zh) * 2022-09-05 2022-11-25 蓝茵工业标识科技(无锡)有限公司 一种具有油墨管路清洗功能的连续式喷码装置

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3601322A (en) * 1967-07-17 1971-08-24 Andrew Szegvari Fine grinding apparatus
CA899066A (en) * 1972-05-02 Friedland Morris System for producing printing inks
DE3233926A1 (de) 1981-09-14 1983-04-28 Fuji Electric Corporate Research and Development, Ltd., Yokosuka, Kanagawa Zerkleinerungs-, misch- oder ruehrvorrichtung
JPH04169269A (ja) * 1990-11-02 1992-06-17 Seiko Epson Corp インクジェットプリント装置におけるインクの再分散方法及びインクカートリッジ
DE69027200T2 (de) 1989-10-02 1996-12-19 Imaje Sa Tintenschaltung zur druckbeaufschlagung einer pigmenttinte für tintenstrahldrucker
EP0799643A1 (fr) * 1996-04-03 1997-10-08 Th. Goldschmidt AG Dispositif de traitement de suspensions
DE19533369C2 (de) 1995-09-09 1998-06-10 Hermann Getzmann Dispergiervorrichtung und Dispergierverfahren
US20020119200A1 (en) * 2000-12-06 2002-08-29 Haskell Royal J. Laboratory scale milling process
JP2003266730A (ja) * 2002-03-19 2003-09-24 Seiko Epson Corp インクジェット式記録装置
WO2007019418A1 (fr) * 2005-08-08 2007-02-15 Sun Chemical Corporation Pigment nanocomposite a luminescence infrarouge et processus sol-gel pour le produire

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA899066A (en) * 1972-05-02 Friedland Morris System for producing printing inks
US3601322A (en) * 1967-07-17 1971-08-24 Andrew Szegvari Fine grinding apparatus
DE3233926A1 (de) 1981-09-14 1983-04-28 Fuji Electric Corporate Research and Development, Ltd., Yokosuka, Kanagawa Zerkleinerungs-, misch- oder ruehrvorrichtung
DE69027200T2 (de) 1989-10-02 1996-12-19 Imaje Sa Tintenschaltung zur druckbeaufschlagung einer pigmenttinte für tintenstrahldrucker
JPH04169269A (ja) * 1990-11-02 1992-06-17 Seiko Epson Corp インクジェットプリント装置におけるインクの再分散方法及びインクカートリッジ
DE19533369C2 (de) 1995-09-09 1998-06-10 Hermann Getzmann Dispergiervorrichtung und Dispergierverfahren
EP0799643A1 (fr) * 1996-04-03 1997-10-08 Th. Goldschmidt AG Dispositif de traitement de suspensions
US20020119200A1 (en) * 2000-12-06 2002-08-29 Haskell Royal J. Laboratory scale milling process
JP2003266730A (ja) * 2002-03-19 2003-09-24 Seiko Epson Corp インクジェット式記録装置
WO2007019418A1 (fr) * 2005-08-08 2007-02-15 Sun Chemical Corporation Pigment nanocomposite a luminescence infrarouge et processus sol-gel pour le produire

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115384193A (zh) * 2022-09-05 2022-11-25 蓝茵工业标识科技(无锡)有限公司 一种具有油墨管路清洗功能的连续式喷码装置
CN115384193B (zh) * 2022-09-05 2023-05-23 蓝茵工业标识科技(无锡)有限公司 一种具有油墨管路清洗功能的连续式喷码装置

Also Published As

Publication number Publication date
DE102008063718B4 (de) 2010-09-16
DE102008063718A1 (de) 2010-06-24

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