EP0641657B1 - Düsenplatte für Fluidstrahl-Druckkopf und Verfahren zu deren Herstellung - Google Patents
Düsenplatte für Fluidstrahl-Druckkopf und Verfahren zu deren Herstellung Download PDFInfo
- Publication number
- EP0641657B1 EP0641657B1 EP94111846A EP94111846A EP0641657B1 EP 0641657 B1 EP0641657 B1 EP 0641657B1 EP 94111846 A EP94111846 A EP 94111846A EP 94111846 A EP94111846 A EP 94111846A EP 0641657 B1 EP0641657 B1 EP 0641657B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle plate
- piece
- plastic
- producing
- functional regions
- 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
- 239000012530 fluid Substances 0.000 title claims description 51
- 238000000034 method Methods 0.000 title claims description 32
- 238000004519 manufacturing process Methods 0.000 title claims description 17
- 239000002184 metal Substances 0.000 claims description 37
- 229910052751 metal Inorganic materials 0.000 claims description 37
- 239000004033 plastic Substances 0.000 claims description 30
- 229920003023 plastic Polymers 0.000 claims description 30
- 238000000465 moulding Methods 0.000 claims description 18
- 230000000295 complement effect Effects 0.000 claims description 13
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 11
- 238000005323 electroforming Methods 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 5
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- -1 polyethersulphone Polymers 0.000 claims description 3
- 229910000531 Co alloy Inorganic materials 0.000 claims description 2
- 229920000106 Liquid crystal polymer Polymers 0.000 claims description 2
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 claims description 2
- 229910001297 Zn alloy Inorganic materials 0.000 claims description 2
- QXZUUHYBWMWJHK-UHFFFAOYSA-N [Co].[Ni] Chemical compound [Co].[Ni] QXZUUHYBWMWJHK-UHFFFAOYSA-N 0.000 claims description 2
- PDYXSJSAMVACOH-UHFFFAOYSA-N [Cu].[Zn].[Sn] Chemical compound [Cu].[Zn].[Sn] PDYXSJSAMVACOH-UHFFFAOYSA-N 0.000 claims description 2
- 229920002492 poly(sulfone) Polymers 0.000 claims description 2
- 239000004417 polycarbonate Substances 0.000 claims description 2
- 229920000515 polycarbonate Polymers 0.000 claims description 2
- 238000010137 moulding (plastic) Methods 0.000 claims 4
- 229920002530 polyetherether ketone Polymers 0.000 claims 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 11
- 229910052710 silicon Inorganic materials 0.000 description 11
- 239000010703 silicon Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 6
- 239000006096 absorbing agent Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000001459 lithography Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 229910003266 NiCo Inorganic materials 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000012811 non-conductive material Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000005469 synchrotron radiation Effects 0.000 description 2
- 241001295925 Gegenes Species 0.000 description 1
- 239000004695 Polyether sulfone Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000000608 laser ablation Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
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- 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
- B41J2/135—Nozzles
- B41J2/16—Production of nozzles
- B41J2/1621—Manufacturing processes
- B41J2/1631—Manufacturing processes photolithography
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- 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
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2/14016—Structure of bubble jet print heads
- B41J2/14032—Structure of the pressure chamber
- B41J2/1404—Geometrical characteristics
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- 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
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2/1433—Structure of nozzle plates
-
- 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
- B41J2/135—Nozzles
- B41J2/16—Production of nozzles
- B41J2/1601—Production of bubble jet print heads
- B41J2/1603—Production of bubble jet print heads of the front shooter type
-
- 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
- B41J2/135—Nozzles
- B41J2/16—Production of nozzles
- B41J2/162—Manufacturing of the nozzle plates
-
- 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
- B41J2/135—Nozzles
- B41J2/16—Production of nozzles
- B41J2/1621—Manufacturing processes
- B41J2/1623—Manufacturing processes bonding and adhesion
-
- 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
- B41J2/135—Nozzles
- B41J2/16—Production of nozzles
- B41J2/1621—Manufacturing processes
- B41J2/1625—Manufacturing processes electroforming
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- 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
- B41J2/135—Nozzles
- B41J2/16—Production of nozzles
- B41J2/1621—Manufacturing processes
- B41J2/1626—Manufacturing processes etching
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- 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
- B41J2/135—Nozzles
- B41J2/16—Production of nozzles
- B41J2/1621—Manufacturing processes
- B41J2/1632—Manufacturing processes machining
- B41J2/1634—Manufacturing processes machining laser machining
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- 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
- B41J2/135—Nozzles
- B41J2/16—Production of nozzles
- B41J2/1621—Manufacturing processes
- B41J2/1637—Manufacturing processes molding
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- 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
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2002/14387—Front shooter
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- 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
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2002/14403—Structure thereof only for on-demand ink jet heads including a filter
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S29/00—Metal working
- Y10S29/005—Method or apparatus with casting
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49401—Fluid pattern dispersing device making, e.g., ink jet
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4998—Combined manufacture including applying or shaping of fluent material
- Y10T29/49982—Coating
- Y10T29/49984—Coating and casting
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4998—Combined manufacture including applying or shaping of fluent material
- Y10T29/49988—Metal casting
Definitions
- the invention relates to a nozzle plate for printheads which are used in inkjet and Color beam printers are used, as well as a process for their production.
- the invention aims such nozzle plates and the equipped with it Produce printheads more economically and their function in terms Improve printing speed and resolution.
- Nozzle plates for ink and color jet print heads are known (Hewlett-Packard Journal, August 1988, pages 28 to 31) (EP-495 663; EP-500 068); such nozzle plates contain 12 up to about 100 nozzles with a hole diameter down to 20 ⁇ m.
- a Device for ejecting drops with a volume of 1 to 1,000 Picoliters are connected to each nozzle.
- the print head often arises by joining the ink tank with generally three plates, where one plate has a thin film structure, the next plate a lithographic one generated plastic structure with feed channel and ink chamber is (channel plate), and the third plate contains the nozzles (nozzle plate). Both the manufacture of the nozzle plate and the channel plate as well Assembling the plates to form the printhead requires considerable effort and high precision.
- the nozzle plate is made, for example, by laser processing of plastic parts manufactured. Other methods are based on a conductive method Base plate made with a non-conductive plastic layer at certain points is provided. The non-conductive points are circular; their Distance corresponds to the nominal distance of the nozzles in the nozzle plate. On the The base plate is deposited electrolytically. This metal layer is thicker than the non-conductive layer, and the electrodeposited Metal inevitably grows over the edge of the non-conductive areas on the non-conductive layer. This way, smaller nozzle diameters realized as the dimensions of the lithographically produced non-conductive Places the plastic layer corresponds. To the nozzle cross section and its variation from nozzle to nozzle within the prescribed tolerances keep, complex manufacturing and measuring methods are to be used. In which last described manufacturing process, the hole spacing is inevitable greater than the thickness of the plate to be manufactured. Because the plate for reasons The stability must have a minimum thickness, the smallest possible hole spacing and thus also limits the print density.
- EP - 0 109 755 has a nozzle plate with it attached Partitions between the fluid chambers indicated that by galvanic deposition of metal on a structured Plate is made.
- the structured plate is made of metal, on the complementary to the shape of the fluid chambers molded body made of non-conductive material attached are.
- the structured two-piece plate is made for several Impression processes used.
- the bodies made of non-conductive material are structured again before each electroforming Plate applied, which is a constantly repeating Adjustment effort required.
- the nozzles are replaced by partial Overgrow the top of the non-conductive body with Metal generated and are thus determined by the molding process. This means that only nozzles with an aspect ratio can be smaller generate as 1.
- One complementary to the shape of the nozzles Body is on the plate used for electroforming unavailable.
- EP - 0 564 102 describes a plastic nozzle plate and their manufacturing processes.
- the nozzle plate has at least two structural levels; the one level contains the Nozzles, the level above contains the fluid chambers and the connecting channels between the fluid chambers and the ink supply channel and possibly also the ink supply channel.
- Both structure levels are structured one after the other by laser ablation or other etching or shaping processes, which according to a pattern given by a mask the partial removal of plastic or its Effect formation.
- the masks are used for every ablation step constantly re-adjusted in every structural level.
- Each Nozzle plate is on a long belt in at least two Process steps manufactured separately.
- the channel structures and the nozzle carrier are made by molding manufactured.
- the nozzles are each using a laser beam drilled individually.
- Channel structures and nozzles are created in two steps completely different processes. There is also post-processing required. This process is also very complex.
- the nozzle plate contains nozzles, fluid chambers, functional areas the connecting channels between the fluid chambers and the storage container for the fluid and possibly adjustment elements, all Functional areas as a one-piece multifunctional microstructure body by molding a one-piece mold insert can be produced in a single molding step.
- Filters and filters can be added to the functional areas of the nozzle plate Fluidic structures are part of increasing the print quality.
- a one-piece micro-structured metal insert used all functional areas contains the nozzle plate in a complementary structure, and the z. B. by Lithography, preferably deep lithography with X-rays, and electroforming will be produced.
- Lithography preferably deep lithography with X-rays
- electroforming By using the lithographic process also non-round or non-square nozzle outlet openings realized become.
- a second layer of an X-ray resist is then generally applied applied in a suitable thickness using a second mask X-rays are irradiated, this second mask having a different absorber structure wears as the first mask.
- a second resist layer is made in the microstructure on the base plate Plastic (resist) a metal electrodeposited, all Cavities of the microstructure can be completely filled with metal. Subsequently more metal is deposited, creating the whole microstructure is covered.
- microstructure made of metal is different from that on the base plate Microstructure made of plastic separated, the microstructured mold insert is obtained from metal, the all functional areas of the nozzle plate contains in a complementary structure.
- the micro-structured nozzle plate is made of plastic by means of the mold insert with all functional areas as a one-piece microstructure body e.g. B. made by injection molding.
- a one-piece nozzle plate can be created, the functional elements contains on both sides.
- the nozzles are on a side running parallel to its axis open. This side of the nozzles is closed, once the nozzle plate has a thin film structure supporting plate is assembled.
- Figure 4 is one using this method manufacturable nozzle plate shown by structuring Nozzle channels on two sides of the plate doubled the print density and / or the use of two different colors is permitted.
- the plastic nozzle plate can be made by injection molding, reaction molding or Embossing can be produced using a metal mold insert. This procedure enable inexpensive mass production of nozzle plates.
- the nozzle plate made of metal can be manufactured inexpensively a negative mold made of plastic, as described above. To the negative form in a galvanoform process - analogous to the process, described in the manufacture of the mold insert - in a metal structure transferred with the desired nozzle holes and functional elements.
- plastics such as polysulfone, polyether sulfone, polymethyl methacrylate, Polycarbonate, polyethylene ether ketone and liquid crystal polymers suitable.
- nozzle plate made of metal for. B. nickel or nickel-cobalt alloys or copper-tin-zinc alloys; such Panels are used either directly or with a coating.
- Example 1 Method for producing a mold insert for a nozzle plate with an axial fluid jet
- PMMA polymethyl methacrylate
- This layer will irradiated with synchrotron radiation through a first X-ray mask.
- the first mask is in a shape that matches the structure of the nozzle plate structured.
- the irradiated areas of the first resist layer soluble. Those irradiated through the first mask Areas are removed from GG developers with a solution.
- the areas detached from the first resist layer filled with nickel, and the whole plate is covered with a 50 ⁇ m thick PMMA resist layer.
- This layer is covered by a irradiated with synchrotron radiation through the second X-ray mask.
- the second Mask is in one of the structure of the channel plate and the structure of the first Structured mask matching shape.
- the irradiated areas of the second resist layer to a depth of approximately 65 ⁇ m soluble through targeted dose deposition. That through the second mask Irradiated areas of the second resist layer are covered with a solution GG developer detached.
- Nickel is electrodeposited in the extracted areas, and the entire plate is covered with an approximately 8 mm thick layer of nickel, whereby the nickel structure of the first level serves as an electrical contact.
- the base plate made of copper is milled off, and the remaining parts both resist layers are dissolved with polyethylene glycol. So that gets the mold insert, its structure to the structure of the nozzle and channel plate is complementary.
- Example 2 Nozzle plate for a printhead with an axially emerging fluid jet
- the nozzle plate produced by means of a mold insert according to Example 1 contains 108 nozzles with a diameter of 50 ⁇ m and one in 2 rows Nozzle length of 100 ⁇ m
- the fluid chamber is 50 ⁇ m deep and below the 70 ⁇ m wide nozzles.
- the fluid pan is also 50 ⁇ m deep.
- the closest The location of the fluid channels is about 30 ⁇ m wide.
- This one-piece nozzle plate comes with a silicon plate that is a heating element for each nozzle, its electrical connections and the fluid inlet contains, glued. Polyurethane glue serves as the adhesive.
- Example 3 Nozzle plate for a printhead with a fluid jet emerging in the plate plane
- Nozzle plate contains 216 nozzles on both sides.
- the nozzles on each side has a distance of 84 ⁇ m. Both rows of nozzles are against each other offset by 42 ⁇ m.
- the dimensions of the nozzle channel are on the narrowest point 40 ⁇ m in width and 40 ⁇ m in depth.
- the diameter the fluid chamber in front of the nozzle is 60 ⁇ m, the wall thickness between the fluid chambers 24 ⁇ m
- the narrowest part of the fluid channel is 20 ⁇ m wide.
- This one-piece nozzle plate is covered on both sides with a silicon plate, which is a heating element for each nozzle and its electrical connections contains, glued.
- a polyurethane adhesive is used as the adhesive.
Description
- das Bestrahlen der Resistschichten unter einem Winkel gegen die Oberflächennormale, oder durch
- die vielfache Anwendung des lithographischen Verfahrens in mehreren Ebenen übereinander mit jeweils veränderter Maskengeometrie, oder durch
- eine geeignete Variation von Belichtungs- und Entwicklungsparametern.
- Die Düsenplatte mit mehreren Funktionsbereichen erleichtert das Herstellen des Druckkopfes, insbesondere deshalb, weil weniger Einzelteile montiert werden müssen.
- Auch sehr aufwendige Strukturen der Düsenplatte lassen sich über das Abformen des Formeinsatzes in großer Stückzahl und großer Präzision kostengünstig herstellen.
- Das Verfahren hat eine hohe Strukturauflösung und erlaubt eine große Packungsdichte der Funktionsbereiche. Man kann Strukturen mit hohem Aspektverhältnis und annähernd beliebiger Form erzeugen.
- Die Düsenplatte erlaubt eine hohe Druckgeschwindigkeit und ist besonders für Druckköpfe mit mehreren Farben geeignet.
- Das aufwendige Justieren der Funktionsbereiche zueinander ist nur beim Herstellen des Formeinsatzes erforderlich.
- Die Anzahl der Fertigungsschritte und die Teilevielfalt werden vermindert, wodurch die Ausbeute steigt und gleichzeitig der Aufwand für die Qualitätskontrolle vermindert wird.
- Durch die Verwendung von nicht-runden oder nicht-quadratischen Düsenaustrittsöffnungen ist ein kontrolliertes Abreißen des Tropfens und eine Stabilisierung der FLugrichtung erzielbar.
- Das Verfahren ist sehr flexibel und erlaubt das Herstellen sehr unterschiedlich strukturierter Düsenplatten aus verschiedenen Materialien.
- Die Funktionsbereiche einer Düsenplatte können kompakt angeordnet werden.
- Die Düsenabstände können weniger als 1/10 der Plattendicke betragen.
Claims (9)
- Verfahren zum Herstellen einer Düsenplatte (12,23) aus Kunststoff für einen Fluidstrahl-Druckkopf, welche Düsen (13) oder Fluidkanäle (24) als Düsenvorformen, Fluidkammern (16,25) sowie Verbindungskanäle (22,26) zwischen den Fluidkammern und einem Vorratsbehälter (15,27) für das Fluid enthält,gekennzeichnet durchHerstellen eines einstückigen Formeinsatzes aus Metall, der sämtliche Funktionsbereiche der Düsenplatte (12,23) in komplementärer Struktur enthält,Abformen der mikrostrukturierten einstückigen Düsenplatte (12,23) aus Kunststoff durch Kunststoff-Abformtechnik mittels des metallenen Formeinsatzes mit sämtlichen Funktionsbereichen als einstückiger multifunktionaler Mikrostrukturkörper in einem einzigen Abformschritt.
- Verfahren nach Anspruch 1 zum Herstellen einer Düsenplatte (12,23) aus Kunststoff für einen Fluidstrahl-Druckkopf, welche zusätzlich integrierte Justierelemente, Filter und fluidische Strukturen enthält, die innerhalb von Funktionsbereichen angeordnet sind, gekennzeichnet durchHerstellen eines einstückigen Formeinsatzes aus Metall, der zusätzlich integrierte Justierelemente, Filter und fluidische Strukturen in komplementärer Struktur enthält,Abformen der mikrostrukturierten einstückigen Düsenplatte (12,23) aus Kunststoff durch Kunststoff-Abformtechnik mittels des metallenen Formeinsatzes mit sämtlichen Funktionsbereichen und zusätzlichen integrierten Justierelementen, Filtern und fluidischen Strukturen als einstückiger multifunktionaler Mikrostrukturkörper in einem einzigen Abformschritt.
- Verfahren nach den Ansprüchen 1 und 2 zum Herstellen einer Düsenplatte (12) aus Kunststoff mit mehreren Funktionsbereichen auf einer Seite, mit Düsen (13), deren Achse senkrecht zur Düsenplatte verläuft, oder mit Fluidkanälen (24), deren Achse parallel zur Düsenplatte verläuft, gekennzeichnet durchHerstellen eines einstückigen Formeinsatzes aus Metall, der sämtliche Funktionsbereiche der Düsenplatte auf seiner einen Seite in komplementärer Struktur enthält,Abformen der auf einer Seite mikrostrukturierten einstückigen Düsenplatte aus Kunststoff durch Kunststoff-Abformtechnik mittels des metallenen Formeinsatzes mit sämtlichen Funktionsbereichen als einstückiger multifunktionaler Mikrostrukturkörper in einen einzigen Abformschritt.
- Verfahren nach den Ansprüchen 1 und 2 zum Herstellen einer Düsenplatte (23) aus Kunststoff mit Fluidkanälen (24), deren Achse parallel zur Düsenplatte verläuft, wobei die Düsenplatte auf beiden Seiten Funktionsbereiche enthält, gekennzeichnet durchHerstellen zweier jeweils einstückiger Formeinsätze aus Metall, von denen jeder sämtliche auf jeweils einer Seite der Düsenplatte angeordnete Funktionsbereiche in komplementärer Struktur enthältAbformen der auf beiden Seiten mikrostrukturierten einstückigen Düsenplatte aus Kunststoff durch Kunststoff-Abformtechnik unter gleichzeitiger Benutzung der beiden einstückigen metallenen Formeinsätze, die in einem Abstand voneinander angeordnet sind, wobei sich die strukturierten Seiten der Formeinsätze gegenüberstehen, mit sämtlichen Funktionsbereichen als einstückiger multifunktionaler Mikrostrukturkörper in einem einzigen Abformschritt.
- Verfahren nach den Ansprüchen 1 bis 4 zum Herstellen einer Düsenplatte (12,23) aus Kunststoff, wobei als Kunststoff Polysulfon, Polyethersulfon, Polymethylmethacrylat, Polycarbonat, Polyethyletherketon oder Flüssigkristallpolymer verwendet wird.
- Verfahren zum Herstellen einer Düsenplatte (12,23) aus Metall für einen Fluidstrahl-Druckkopf, welche Düsen (13), Fluidkammern (16,25) sowie Verbindungskanäle (22,26) zwischen den Fluidkammern und einem Vorratsbehälter (15,27) für das Fluid enthält, gekennzeichnet durchHerstellen eines einstückigen Formeinsatzes aus Kunststoff, der sämtliche Funktionsbereiche der Düsenplatte (12,23) in komplementärer Struktur enthält,Galvanoformung der mikrostrukturierten einstückigen Düsenplatte (12,23) aus Metall mit sämtlichen Funktionsbereichen mittels des Formeinsatzes aus Kunststoff als einstückiger multifunktionaler Mikrostrukturkörper in einem einzigen Abformschritt.
- Verfahren nach Anspruch 6 zum Herstellen einer Düsenplatte (12,23) aus Metall mit mehreren Funktionsbereichen für einen Fluidstrahl-Druckkopf, welche zusätzlich integrierte Justierelemente, Filter und fluidische Strukturen enthält, die innerhalb von Funktionsbereichen angeordnet sind, gekennzeichnet durchHerstellen eines einstückigen Formeinsatzes aus Kunststoff, der zusätzlich integrierte Justierelemente, Filter und fluidische Strukturen in komplementärer Struktur enthält,Galvanoformung der mikrostrukturierten einstückigen Düsenplatte (12, 23) aus Metall mittels des Formeinsatzes aus Kunststoff, der sämtliche Funktionsbereiche und zusätzlich integrierte Justierelemente, Filter und fluidische Strukturen enthält, als einstückiger multifunktionaler Mikrostrukturkörper in einem einzigen Abformschritt.
- Verfahren nach den Ansprüchen 6 und 7 zum Herstellen einer Düsenplatte (12) aus Metall mit Düsen (13), deren Achse senkrecht zur Düsenplatte verläuft, und Funktionsbereichen, die auf einer Seite der Düsenplatte (12) angeordnet sind, gekennzeichnet durchHerstellen eines einstückigen Formeinsatzes aus Kunststoff, der auf einer Seite sämtliche Funktionsbereiche der Düsenplatte in komplementärer Struktur enthält,Galvanoformung der mikrostrukturierten einstückigen Düsenplatte (12) aus Metall mit sämtlichen Funktionsbereichen mittels des Formeinsatzes aus Kunststoff als einstückiger multifunktionaler Mikrostrukturkörper in einem einzigen Abformschritt.
- Verfahren nach den Ansprüchen 6 bis 8 zum Herstellen einer Düsenplatte (12,23) aus Metall, wobei als Metall Nickel, Kupfer, Nickel-Kobalt- oder Kupfer-Zinn-Zink-Legierung verwendet wird.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4329728 | 1993-09-03 | ||
DE4329728A DE4329728A1 (de) | 1993-09-03 | 1993-09-03 | Düsenplatte für Fluidstrahl-Druckkopf und Verfahren zu deren Herstellung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0641657A1 EP0641657A1 (de) | 1995-03-08 |
EP0641657B1 true EP0641657B1 (de) | 1999-02-03 |
Family
ID=6496729
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94111846A Expired - Lifetime EP0641657B1 (de) | 1993-09-03 | 1994-07-29 | Düsenplatte für Fluidstrahl-Druckkopf und Verfahren zu deren Herstellung |
Country Status (6)
Country | Link |
---|---|
US (2) | US5588597A (de) |
EP (1) | EP0641657B1 (de) |
JP (1) | JPH0781069A (de) |
KR (1) | KR950008131A (de) |
CN (2) | CN1068280C (de) |
DE (2) | DE4329728A1 (de) |
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-
1993
- 1993-09-03 DE DE4329728A patent/DE4329728A1/de not_active Withdrawn
-
1994
- 1994-07-29 DE DE59407762T patent/DE59407762D1/de not_active Expired - Fee Related
- 1994-07-29 EP EP94111846A patent/EP0641657B1/de not_active Expired - Lifetime
- 1994-08-30 US US08/297,780 patent/US5588597A/en not_active Expired - Fee Related
- 1994-08-30 JP JP6205099A patent/JPH0781069A/ja active Pending
- 1994-08-31 KR KR1019940021734A patent/KR950008131A/ko not_active Application Discontinuation
- 1994-09-02 CN CN94115646A patent/CN1068280C/zh not_active Expired - Fee Related
-
1996
- 1996-09-17 US US08/715,096 patent/US5809646A/en not_active Expired - Fee Related
-
2000
- 2000-01-25 CN CN00101197A patent/CN1264646A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
US5588597A (en) | 1996-12-31 |
CN1068280C (zh) | 2001-07-11 |
KR950008131A (ko) | 1995-04-17 |
DE4329728A1 (de) | 1995-03-09 |
JPH0781069A (ja) | 1995-03-28 |
CN1264646A (zh) | 2000-08-30 |
DE59407762D1 (de) | 1999-03-18 |
US5809646A (en) | 1998-09-22 |
CN1112879A (zh) | 1995-12-06 |
EP0641657A1 (de) | 1995-03-08 |
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