EP1134083B1 - Flüssigkeitspatrone und Druckkopf für einen Ink-Jet-Printer - Google Patents
Flüssigkeitspatrone und Druckkopf für einen Ink-Jet-Printer Download PDFInfo
- Publication number
- EP1134083B1 EP1134083B1 EP01114517A EP01114517A EP1134083B1 EP 1134083 B1 EP1134083 B1 EP 1134083B1 EP 01114517 A EP01114517 A EP 01114517A EP 01114517 A EP01114517 A EP 01114517A EP 1134083 B1 EP1134083 B1 EP 1134083B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- print head
- sealing ring
- liquid cartridge
- opening
- face
- 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
Links
Images
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 a printhead according to the preamble of Claim 1.
- EP-A-0'560'729 is an ink cartridge for a printhead of an ink jet printer known.
- the cartridge has a housing. In one wall of the housing there is an opening around which Place the cartridge on a tubular extension of the printhead. There is a sealing ring on the tubular extension for sealing put on with a bead on its cylindrical The outer surface rests against the cylindrical wall of the opening.
- the Cartridge has spherical caps on opposite side walls Projections, which are in holes in the side walls of the printhead engage.
- EP-A-0 655 336 discloses a printhead with a elastomeric sealing element, which has a sealing rib. This Sealing element is arranged on a bottom of the printhead housing, so that a nozzle projects over the sealing element.
- the present invention has for its object a Liquid cartridge and a printhead of the aforementioned Form in such a way that the production is simplified. This is done by a printhead solved with the features of claim 1.
- FIG. 1 there is an ink cartridge shown with thick lines 1 inserted in one indicated with thin lines
- Print head 2 of an ink jet printer shown.
- the printhead 2 has a tubular nozzle 11, the end face with a Sieve 12 is complete.
- the housing 13 of the print head 2 is in the illustration according to FIG. 2 open to the right and has a projection at the bottom right 14.
- the interior 15 of the nozzle 11 communicates with a nozzle plate 16 and is inked filled.
- On the nozzle 11 is an elastomeric sealing ring 17 with snapped onto a tubular extension 18.
- a fine-pored fiber wick 20 used, the front end touches the screen 12.
- the Sealing ring 17 has a flat end face surrounding the extension 19 21.
- the opposite, parallel end face 22 lies on the end face of the nozzle 12.
- the cartridge 1 has a housing 25 consisting of a bottom wall 26, four side walls 27, 28, 29 and a cover 30, welded on top wall.
- the lower side wall 27 has a round opening 31, the diameter of which is larger than that Diameter of the neck 19.
- a sealing bead 32 on the underside of the wall 27, which in the axial direction of the opening 31 and the nozzle 11 against the End face 21 of the sealing ring 17 is pressed.
- the nozzle 11 and accordingly the sealing ring 17, the opening 31 and the sealing bead 32 can also be rectangular in plan view.
- the wall 26 has a top running approximately parallel to the wall 27 Locking shoulder 33, which in a corresponding counter shoulder 34th of the housing 13 of the print head 2 is engaged.
- the cartridge 1 When inserting the cartridge 1 snaps the lower edge of the lid 30 behind the Projection 14 a. The cartridge 1 is now pushed in until the locking shoulder 33 engages in the counter shoulder 34. In order to is a secure seal of the opening 31 against the nozzle 11 reached. Because the opening 31 is larger than the projection 19, on the one hand, the insertion by a pivoting movement enables, on the other hand, manufacturing tolerances can be bridged in the position of the nozzle 11.
- the wick 20 touches an ink-soaked foam body when inserted 35 so that the wick 20 is soaked in ink.
- the wick 20 also acts as a filter, so that the nozzles 16 do not pass through Particles from the foam body 35 are blocked or damaged.
- a pump element 40 is cast in one piece in the cover 30.
- the Pumporgan 40 has a bellows 41 formed from a number U-shaped folds 42 of small wall thickness with straight webs 43 and rectilinear, parallel legs 44.
- the legs 44 have increasing length from fold 42 to fold 42. they are inclined at an acute angle to the surface of the cover 30. Your free ends go into the lid 30.
- the cover sheet 45 of the bellows 41 has a larger wall thickness. It's below a film hinge 45 'with the lid 30 and laterally and above with the extreme fold 42 connected.
- In the top middle has the cover page 45 a projection 46 with an air supply opening 47. After the insertion of the cartridge 1 into the print head 2 presses the operator on the projection 46. As a result, the opening 47 closed and the bellows 41 pressed in, so that the interior 48 of the bellows 41 is compressed. This will cause ink to enter the interior 15 of the nozzle 11 pressed.
- a flap 49 is formed on the inside via a film hinge 50.
- FIG. 2 shows this tab 49 as the lid 30 is injection molded.
- Tab 49 pressed against the cover 30 by the foam body 33. This is the interior 48 of the bellows 41 except for narrow air gaps completed against the foam body 35.
- the cartridge 1 described can be produced very efficiently.
- the pump organ 40 can also be made very narrow. This means that even very narrow cartridges 1, e.g. for use can be produced in multicolor print heads 2. It can large tolerances in the position of the opening 31 and the nozzle 11 can be bridged. Because by engaging the locking shoulder 33 in the counter shoulder 34 the cartridge in the axial direction the opening 31 is positioned exactly, a safe Andokken the upper end face of the wick 20 to the foam body 35 reached.
- the sealing ring 17 has the triple function of sealing, the suspension for snapping the shoulder 33, 34 and the compensation of tolerances regarding the position of the nozzle 11th
- the liquid cartridge 1 described can be used except for printheads used by ink-jet printers for other applications e.g. for dosing devices for liquids, e.g. in the Medical sector.
Landscapes
- Ink Jet (AREA)
Description
- Figur 1
- Eine Frontansicht,
- Figur 2
- Einen Querschnitt längs der Linie II-II in Figur 1, und
- Figur 3
- einen vergrösserten Ausschnitt der Darstellung nach Figur 2.
Claims (4)
- Druckkopf für einen Ink-Jet-Printer zum Einsetzen einer Flüssigkeitspatrone (1), wobei der Druckkopf (2) einen Stutzen (11) und einen elastomeren Dichtring (17) aufweist, wobei der Dichtring (17) eine Stirnfläche (21) aufweist, gegen welche ein eine Öffnung (31) der Flüssigkeitspatrone (1) umgebender Dichtwulst (32) abdichtet, und wobei der Druckkopf (2) eine annähernd parallel zur Stirnfläche (21) des Dichtrings (17) verlaufende Gegenschulter (34) zum Einrasten einer Einrastschulter (33) der Flüssigkeitspatrone hat, dadurch gekennzeichnet, dass der Stutzen (11) mit einem Sieb (12) abgeschlossen ist und dass der Dichtring (17) auf einer Stirnfläche des Stutzens (11) abgestützt ist.
- Druckkopf nach Anspruch 1, wobei die Stirnfläche (21) des Dichtrings (13) aufgrund des Einrastens gegen den Dichtwulst (32) in Achsrichtung der Öffnung (31) und des Stutzens (11) pressbar ist.
- Druckkopf nach Anspruch 1, wobei der Dichtring (17) einen hülsenförmigen Ansatz (19) hat, in welchen ein Faserdocht (20) eingesetzt ist, der das Sieb (12) direkt oder indirekt berührt und dessen Fasern annähernd senkrecht zum Sieb verlaufen.
- Druckkopf nach Anspruch 2, wobei der Ansatz (19) einen kleineren Aussendurchmesser hat als die Öffnung (31) der Flüssigkeitspatrone (1), die zum Aufsetzen auf einen Tropfenerzeuger (2) vorgesehen ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19548032A DE19548032C2 (de) | 1995-12-21 | 1995-12-21 | Flüssigkeitspatrone für einen Ink-Jet-Printer |
DE19548032 | 1995-12-21 | ||
EP96810875A EP0780234B1 (de) | 1995-12-21 | 1996-12-17 | Flüssigkeitspatrone und Druckkopf für einen Ink-Jet-Printer |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96810875A Division EP0780234B1 (de) | 1995-12-21 | 1996-12-17 | Flüssigkeitspatrone und Druckkopf für einen Ink-Jet-Printer |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1134083A2 EP1134083A2 (de) | 2001-09-19 |
EP1134083A3 EP1134083A3 (de) | 2002-01-23 |
EP1134083B1 true EP1134083B1 (de) | 2004-04-07 |
Family
ID=26021542
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01114517A Expired - Lifetime EP1134083B1 (de) | 1995-12-21 | 1996-12-17 | Flüssigkeitspatrone und Druckkopf für einen Ink-Jet-Printer |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP1134083B1 (de) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2087698T3 (es) | 1992-03-10 | 1996-07-16 | Pelikan Produktions Ag | Cartucho de tinta para una cabeza impresora de una impresora de chorro de tinta. |
JPH05338191A (ja) * | 1992-06-11 | 1993-12-21 | Fuji Xerox Co Ltd | インクジェットカートリッジ |
JP3201053B2 (ja) * | 1993-02-13 | 2001-08-20 | 富士ゼロックス株式会社 | インクジェットカートリッジ |
US5619239A (en) * | 1993-11-29 | 1997-04-08 | Canon Kabushiki Kaisha | Replaceable ink tank |
JPH08323990A (ja) * | 1995-06-02 | 1996-12-10 | Brother Ind Ltd | インク供給連結部材 |
-
1996
- 1996-12-17 EP EP01114517A patent/EP1134083B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1134083A2 (de) | 2001-09-19 |
EP1134083A3 (de) | 2002-01-23 |
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