EP0781203B1 - Inkjet printheads - Google Patents
Inkjet printheads Download PDFInfo
- Publication number
- EP0781203B1 EP0781203B1 EP95931308A EP95931308A EP0781203B1 EP 0781203 B1 EP0781203 B1 EP 0781203B1 EP 95931308 A EP95931308 A EP 95931308A EP 95931308 A EP95931308 A EP 95931308A EP 0781203 B1 EP0781203 B1 EP 0781203B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- protective layer
- ablatable
- printhead
- layer
- high energy
- 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
- 239000000463 material Substances 0.000 claims description 52
- 239000011241 protective layer Substances 0.000 claims description 48
- 238000000034 method Methods 0.000 claims description 47
- 238000009736 wetting Methods 0.000 claims description 33
- 238000002679 ablation Methods 0.000 claims description 27
- 239000010410 layer Substances 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 21
- 239000012790 adhesive layer Substances 0.000 claims description 17
- 239000000853 adhesive Substances 0.000 claims description 8
- 230000001070 adhesive effect Effects 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 5
- 239000004642 Polyimide Substances 0.000 claims description 4
- 239000000654 additive Substances 0.000 claims description 4
- 229920001721 polyimide Polymers 0.000 claims description 4
- 230000000996 additive effect Effects 0.000 claims description 3
- 230000000873 masking effect Effects 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 2
- 229920001451 polypropylene glycol Polymers 0.000 claims description 2
- 229920003055 poly(ester-imide) Polymers 0.000 claims 1
- 239000002344 surface layer Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 description 28
- 239000011248 coating agent Substances 0.000 description 25
- 230000015572 biosynthetic process Effects 0.000 description 5
- 150000003254 radicals Chemical class 0.000 description 5
- 239000011247 coating layer Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229920006267 polyester film Polymers 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000005041 Mylar™ Substances 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229920001646 UPILEX Polymers 0.000 description 1
- VZPPHXVFMVZRTE-UHFFFAOYSA-N [Kr]F Chemical compound [Kr]F VZPPHXVFMVZRTE-UHFFFAOYSA-N 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 229920006397 acrylic thermoplastic Polymers 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- ISQINHMJILFLAQ-UHFFFAOYSA-N argon hydrofluoride Chemical compound F.[Ar] ISQINHMJILFLAQ-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000013626 chemical specie Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- XPBBUZJBQWWFFJ-UHFFFAOYSA-N fluorosilane Chemical compound [SiH3]F XPBBUZJBQWWFFJ-UHFFFAOYSA-N 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 230000005499 meniscus Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000012766 organic filler Substances 0.000 description 1
- 125000000962 organic group Chemical group 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 description 1
- IGELFKKMDLGCJO-UHFFFAOYSA-N xenon difluoride Chemical compound F[Xe]F IGELFKKMDLGCJO-UHFFFAOYSA-N 0.000 description 1
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
- B41J2/135—Nozzles
- B41J2/16—Production of nozzles
- B41J2/1621—Manufacturing processes
- B41J2/1632—Manufacturing processes machining
- B41J2/1634—Manufacturing processes machining laser machining
-
- 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
-
- 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
Definitions
- the present invention relates to inkjet printheads, and in particular to the production of inkjet nozzles and other instances where removal of material from elements of inkjet printheads is required. Such material can usefully be removed, at least in part, by ablation.
- ablation - also known as photoablative decomposition - is known: see, for example, R. Srinivasan, J. Vac. Sci. Technol. B, Vol 4, page 923 (1983).
- both the adhesive layer and backing tape are removed from those areas where the nozzles are formed.
- a similar adhesive layer and backing tape arrangement is known from WO93/22141.
- EP-A-0 367 541 further discloses an alternative arrangement in which no adhesive layer is employed.
- the nozzle plate is carried on a backing layer and the face of the nozzle plate which is to be bonded to the print head body is covered by a protective layer. Ablation takes place through this protective layer which is removed prior to the bonding process.
- nozzles are formed in a nozzle plate after application of a non-wetting coating by ablation of the nozzle plate material using a laser beam which impinges on the opposite surface of the nozzle plate to that on which the non-wetting coating is located.
- a problem associated with this method is shown in Figure 4a of the document: where the non-wetting coating layer has a thickness less than 20nm, a portion of the layer at the periphery of the nozzle is blown away in the course of ablation, leaving an area where no non-wetting layer exists.
- the document proposes using a thicker non-wetting coating, ablating it with the aid of a covering layer so as to achieve a satisfactory nozzle shape.
- EP-A-0 309 146, WO92/16822 and WO93/15911 - belonging to the same applicant as the present invention - also relate to ablation in the context of inkjet printheads.
- All three documents disclose methods of removing material from an element of an inkjet printhead - in this case a nozzle plate - using a laser beam which impinges on a surface forming or intended to form part of the external surface of the printhead - in this case a surface having a non-wetting coating. Since, in these examples, the laser beam does not ablate the non-wetting coating from the rear, the above-mentioned problem with the non-wetting coating being blown away does not occur.
- the originators of the present invention have encountered problems with damage to that surface which is intended to form part of the external surface of the printhead.
- the damage has impaired the performance of the nozzle.
- the originators of the present invention believe that the damage is caused by high energy free radicals and other highly reactive chemical species, liberated during the ablation process, diffusing back onto that surface intended to form part of the external surface of the printhead.
- the present invention allows the damage referred to above to be avoided.
- a method of removing material from an element of an inkjet printhead said element including an ablatable material and having a surface intended to form part of the external surface of the printhead, the method being characterised by the steps of:
- the protective layer may be releasably bonded to said surface, advantageously by the use of an adhesive layer.
- an adhesive layer may be transparent to the high energy beam. Removal of the adhesive layer can then take place by the action of the high-energy radicals generated during the ablation of material lying beneath the adhesive layer, for example the material of the nozzle plate.
- the adhesive layer is itself ablatable.
- the UV absorbing characteristic may be an intrinsic property of the adhesive or may be achieved by the use of a UV absorbing additive.
- the protective layer this also may be transparent to the high-energy beam but will advantageously comprise ablatable material. This will allow the protective layer to be removed by the high energy beam during the material removal process and yet be of sufficient thickness that it will effectively protect the surface from the effects of high energy radicals as described above. Where the protective layer is not ablatable, removal will be by the action of the high-energy radicals generated during the ablation of material lying beneath the protective layer e.g. material of the nozzle plate.
- a protective layer and/or adhesive that absorbs UV radiation has the
- the element of the inkjet printhead may be an integral part of the printhead or a separate entity which is attached to the printhead. In the latter case, material removal from the element may take place before or after attachment of the element to the printhead.
- the element of an inkjet printhead in question may be of homogeneous construction or may comprise at least two layers. In the former case, the whole element will necessarily be of ablatable material. Although in the latter case only one of the inner layers need be ablatable, if the outer layer is not ablatable it should be sufficiently thin that it will be removed by the high energy beam. Another possibility is for material to be removed from the outer layer only.
- Removal of the protective layer following ablation may be effected mechanically e.g. by peeling, or chemically e.g. by dissolving the layer using a solvent such as acetone, or by a combination of both.
- FIG. 1 there is shown a nozzle plate (4) having a non-wetting coating (6) which forms part of the external surface of the printhead.
- the nozzle plate and non-wetting coating may be of the types disclosed, for example, in EP-A-367 438 belonging to the present applicant and incorporated in the present application by reference.
- the nozzle plate is attached to a body (2) of an inkjet printhead having ink ejection channels (12). It is noted that correct positioning of each of the nozzles relative to its respective ink ejection channel is conveniently facilitated by attaching the nozzle plate to the printhead body prior to formation of the nozzles.
- the nozzle plate may comprise any ablatable material - for example plastics material such as polyimide, polycarbonate, polyester, polyetheretherketone, acrylics or non-vitreous inorganic material such as metal, in particular aluminium, or ceramics. Where a plastics material is used, this may include additives of the kind normally employed with plastics, including organic and/or inorganic fillers.
- plastics material such as polyimide, polycarbonate, polyester, polyetheretherketone, acrylics or non-vitreous inorganic material such as metal, in particular aluminium, or ceramics.
- plastics material such as polyimide, polycarbonate, polyester, polyetheretherketone, acrylics or non-vitreous inorganic material such as metal, in particular aluminium, or ceramics.
- this may include additives of the kind normally employed with plastics, including organic and/or inorganic fillers.
- the non-wetting coating may be of the kind comprising fluorocarbon functional silane and may be formed by the method described in the above-mentioned EP-A-0 367 438, whereby an adherent first layer comprising cured siloxane is formed on the surface of the nozzle plate, followed by a second layer derived from at least one fluorosilane having a silicon atom to which is attached at least one hydrolysable group and at least one fluorine-containing organic group which donates non-wetting properties to the layer.
- FIG. 2 shows the nozzle plate and non-wetting coating of Figure 1 when provided with a protective layer (10) as per a first embodiment of the present invention.
- This layer is preferably polyester film, for example the polyethylene terephthlate (PET) film sold by ICI under the trade name Melinex (trade mark), or polyimide (PI) film, for example that sold by UBE under the name Upilex (trade mark). Both these materials are ablatable and have a high absorbance of ultra-violet radiation in the region of 248 nm wavelength.
- the protective layer is attached to the non-wetting coating by a layer (8) of pressure sensitive adhesive.
- the adhesive is preferably applied first to the protective layer (rather than the non-wetting surface) by any suitable means e.g. a wire-wound meter bar, the adhesive-coated protective layer then being applied to the non-wetting coating using pressure.
- the adhesive is preferably ablatable - this property being either intrinsic or obtained by means of an ultra-viol
- a protective layer may be applied to a sheet of nozzle plate material to which a non-wetting coating has been applied. Such a sheet is subsequently cut up to form individual nozzle plates, each of which is attached to a printhead. Only then would the step of material removal - in this case nozzle formation - take place.
- Material removal is effected by directing a high energy beam - such as an excimer laser beam - at that side of the nozzle plate (4) on which the non-wetting coating (6) is located such that material is removed from the nozzle plate by ablation.
- a high energy beam - such as an excimer laser beam -
- the wavelengths of laser light chosen are typically 193, 248 or 308 nm, corresponding to photon emission at the excimer line of argon fluoride (ArF), krypton fluoride (KrF) or xenon fluoride (XeCl) respectively.
- the material of the protective layer (10) is also ablated away ( Figure 3).
- the non-wetting coating is sufficiently thin - no greater than 1 micron for example - that it may be removed without necessarily being made of an ablatable material.
- Material may be removed from the nozzle plate to create not only nozzles of the types mentioned in the aforementioned documents but also solvent wettable areas of the type disclosed in EP-A-0 389 217 or nozzles having a formation provided within the bore serving to control the nozzle ink meniscus as per WO93/15911 - both of these documents belonging to the present applicant and being incorporated herein by reference. Material removal may take place with the nozzle plate remote from the rest of the printhead or attached to the printhead. The latter method avoids problems with both registration of the nozzles in the nozzle plate with the channels of the inkjet printhead and alignment of the nozzle axes in the plane of the channels.
- the protective layer is removed from the surface of the non-wetting coating (6) to leave the arrangement shown in Figure 4. Any ablation products that might otherwise have diffused back towards the printhead and have been deposited upon the protection layer, are also removed in this step. There is left a nozzle plate having well-formed nozzle bores (14) and outlets (16) having sharp edges (18) and surrounded by an undamaged non-wetting coating (6).
- the protective layer may be of such a constitution - for example a liquid or a gel - that it establishes by itself a sealing engagement with the surface to be protected.
- the liquid/gel layer according to the second embodiment may simply be applied to the surface to be protected by any conventional means e.g. roll coating.
- Figure 5 shows an arrangement of this second embodiment where the liquid/gel layer (20) is held between the surface (6) of the printhead and a plate (26) having an aperture (28) through which can pass the hight energy beam. That part of the liquid/gel lying in the path (22) of the beam is removed whilst the liquid/gel lying outside the path of the beam remains and protects the surface of the nozzle plate and in particular that surface lying at the periphery of the nozzle outlet (24).
- the viscosity of the liquid/gel layer is selected so that the layer remains in place around the periphery of the nozzle aperture, during the ablation process.
- the non-wetting action of a coated nozzle plate will be taken into consideration, in selecting this viscosity, together with the period of time required for the ablation process.
- the liquid/gel is preferably ablatable, thereby avoiding the problems with non-ablatable layers discussed earlier.
- the liquid/gel is of sufficiently high viscosity that it remains in location once applied - either to the surface of the printhead or between the surface of the printhead and the plate.
- a suitable liquid is a high molecular weight liquid such as polypropylene glycol.
- the plate may hold the liquid/gel in position or may itself be held in position by the liquid/gel layer. In both of cases, the plate offers an additional degree of protection to the surface of the printhead from ablation products.
- the plate may be of such construction as to be reusable many times or to be discarded after ablation of the nozzle along with the liquid/gel. It may advantageously comprise polyester film, for example the polyethylene terephthlate (PET) film sold by ICI under the trade name Melinex (trade mark).
- the aperture in the plate can be formed prior to ablation of the nozzle using the same high energy beam as used for nozzle formation, an aperture larger than the outlet aperture of the nozzle being obtained by displacing the plate along the axis of the tapered beam such that a larger section of this tapered beam ablates a larger aperture.
- the plate can either be in-situ on the surface of the printhead or remote from the printhead during this process.
- the liquid/gel may be inserted between the plate and the printhead surface in any suitable fashion, for example roll coating of the plate or the printhead surface prior to assembly, or by pumping the liquid between the plate and the printhead surface.
- An design of plate (26) particularly suited to this latter process is shown in Figure 6: in addition to an aperture (28), the plate has a chamber (30) formed beneath the aperture in which the liquid layer can form in the particularly critical area around the nozzle. Liquid may be fed to the chamber (as indicated by arrows 34) via channels (32) formed in the plate.
- the present invention is also applicable to the case where the element to be ablated is an integral part of the printhead e.g. where nozzles are created directly in the printhead as per EP-A-0 595 654.
- both the method of removing material and the protective layer arrangement described in the present document are not restricted to the manufacture of nozzles or nozzle plates but are applicable to any element of an inkjet printhead which includes an ablatable material and which has a surface intended to form part of the external surface of the printhead.
Description
plate (26) having an aperture (28) through which can pass the hight energy beam. That part of the liquid/gel lying in the path (22) of the beam is removed whilst the liquid/gel lying outside the path of the beam remains and protects the surface of the nozzle plate and in particular that surface lying at the periphery of the nozzle outlet (24).
Claims (26)
- Method of removing material from an element of an inkjet printhead, said element including an ablatable material and having a surface intended to form part of the external surface of the printhead, the method being characterised by the steps of:a) applying a protective layer to be in sealing engagement with said surface;b) directing a high energy beam at said protective layer from that side of said element to which said protective layer is applied, thereby removing material from said protective layer and said element having said surface, at least part of the material removed from said element being removed by ablation;c) removing said protective layer from said surface.
- Method according to Claim 1 wherein the protective layer is releasably bonded to said surface.
- Method according to Claim 2 wherein the protective layer is releasably bonded to said surface by an adhesive layer.
- Method according to Claim 3 wherein the adhesive layer is ablatable.
- Method according to Claim 4 wherein the adhesive layer includes an ultra-violet-radiation-absorbing additive
- Method according to Claim 4 wherein the ablatable property is an intrinsic property of the adhesive.
- Method according to Claim 3 wherein the adhesive layer is transparent to the high energy beam.
- Method according to any of the previous claims wherein the protective layer comprises ablatable material.
- Method according to Claim 8 wherein the ablatable material comprises polyester or polyimide.
- Method according to Claim 1 wherein the protective layer establishes by itself a sealing engagement with said surface.
- Method according to Claim 10 wherein the protective layer is a liquid or a gel.
- Method according to Claim 11 wherein said liquid or gel is ablatable.
- Method according to Claim 12 wherein the liquid is polypropylene glycol.
- Method according to Claim 11 wherein said protective layer lies between said surface and a member lying adjacent the periphery of a zone of material removal.
- Method according to Claim 14 wherein said member is a plate lying spaced from said surface and having an aperture through which said high energy beam passes.
- Method according to Claim 14 wherein said aperture is formed by said high energy beam prior to said removal of material from said element having said surface.
- Method according to Claim 15 wherein said member includes a chamber located on that side of the plate lying closest said surface, liquid or gel being pumpable into said chamber thereby to establish a protective layer.
- Method according to any one of the preceding claims, wherein the element comprises a body portion comprising ablatable material and a surface layer of a different material to that of the body portion.
- Method according to Claim 18 wherein material is removed only from one layer.
- Method according to any of the previous claims wherein said surface intended to form part of the external surface of the printhead has a functionality susceptible to interference from ablation products.
- Method according to Claim 20, wherein said functionality comprises non-wetting action or electrical conductivity.
- Method according to any of the previous claims wherein material removal takes place with said element integral with said inkjet printhead.
- Method according to any of Claims 1-21 wherein material removal takes place with said element remote from said inkjet printhead.
- Method according to any of the previous claims wherein said high energy beam is an excimer laser beam.
- Method according to any of the previous claims wherein the high energy beam is shaped to define the geometry of material removal, by means located remote of the protective layer.
- Method according to Claim 25 wherein masking means are located remote of the protective layer and are imaged onto the protective layer by means of an optical focusing system.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9418412 | 1994-09-13 | ||
GB9418412A GB9418412D0 (en) | 1994-09-13 | 1994-09-13 | Removal of material from inkjet printheads |
PCT/GB1995/002157 WO1996008375A1 (en) | 1994-09-13 | 1995-09-12 | Inkjet printheads |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0781203A1 EP0781203A1 (en) | 1997-07-02 |
EP0781203B1 true EP0781203B1 (en) | 1999-01-27 |
Family
ID=10761239
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95931308A Expired - Lifetime EP0781203B1 (en) | 1994-09-13 | 1995-09-12 | Inkjet printheads |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0781203B1 (en) |
JP (1) | JPH10505557A (en) |
KR (1) | KR970706128A (en) |
CA (1) | CA2199033A1 (en) |
DE (1) | DE69507622T2 (en) |
GB (1) | GB9418412D0 (en) |
WO (1) | WO1996008375A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010003817A1 (en) * | 2010-04-09 | 2011-10-13 | Trumpf Werkzeugmaschinen Gmbh + Co. Kg | Coating for applying on a workpiece for laser material processing with laser wavelengths, comprises absorption layer whose absorption is high at laser wavelength so that coating is vaporized locally before actual machining of workpiece |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9622177D0 (en) | 1996-10-24 | 1996-12-18 | Xaar Ltd | Passivation of ink jet print heads |
US6447984B1 (en) * | 1999-02-10 | 2002-09-10 | Canon Kabushiki Kaisha | Liquid discharge head, method of manufacture therefor and liquid discharge recording apparatus |
US6288360B1 (en) * | 1999-07-14 | 2001-09-11 | Aradigm Corporation | Excimer laser ablation process control of multilaminate materials |
GB0113639D0 (en) | 2001-06-05 | 2001-07-25 | Xaar Technology Ltd | Nozzle plate for droplet deposition apparatus |
JP4726157B2 (en) * | 2005-02-16 | 2011-07-20 | 株式会社リコー | Nozzle plate manufacturing method |
GB0510987D0 (en) | 2005-05-28 | 2005-07-06 | Xaar Technology Ltd | Droplet deposition apparatus |
JP6038313B2 (en) * | 2013-06-24 | 2016-12-07 | 株式会社日立製作所 | Manufacturing method of laser processed component and laser processing method |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE68918663T2 (en) * | 1988-10-31 | 1995-03-16 | Canon Kk | Process for manufacturing an inkjet printhead. |
ATE210019T1 (en) * | 1990-07-21 | 2001-12-15 | Canon Kk | PRODUCTION METHOD OF A COLOR RAY RECORDING HEAD AND COLOR RAY RECORDING HEAD |
ATE157046T1 (en) * | 1991-01-18 | 1997-09-15 | Canon Kk | METHOD FOR PRODUCING A COLOR RAY RECORDING HEAD |
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1994
- 1994-09-13 GB GB9418412A patent/GB9418412D0/en active Pending
-
1995
- 1995-09-12 CA CA002199033A patent/CA2199033A1/en not_active Abandoned
- 1995-09-12 EP EP95931308A patent/EP0781203B1/en not_active Expired - Lifetime
- 1995-09-12 DE DE69507622T patent/DE69507622T2/en not_active Expired - Fee Related
- 1995-09-12 KR KR1019970701632A patent/KR970706128A/en not_active Application Discontinuation
- 1995-09-12 WO PCT/GB1995/002157 patent/WO1996008375A1/en not_active Application Discontinuation
- 1995-09-12 JP JP8509993A patent/JPH10505557A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010003817A1 (en) * | 2010-04-09 | 2011-10-13 | Trumpf Werkzeugmaschinen Gmbh + Co. Kg | Coating for applying on a workpiece for laser material processing with laser wavelengths, comprises absorption layer whose absorption is high at laser wavelength so that coating is vaporized locally before actual machining of workpiece |
DE102010003817B4 (en) * | 2010-04-09 | 2013-04-11 | Trumpf Werkzeugmaschinen Gmbh + Co. Kg | Workpiece protection film and thus film-coated workpiece |
Also Published As
Publication number | Publication date |
---|---|
EP0781203A1 (en) | 1997-07-02 |
KR970706128A (en) | 1997-11-03 |
GB9418412D0 (en) | 1994-11-02 |
WO1996008375A1 (en) | 1996-03-21 |
CA2199033A1 (en) | 1996-03-21 |
JPH10505557A (en) | 1998-06-02 |
DE69507622T2 (en) | 1999-09-09 |
DE69507622D1 (en) | 1999-03-11 |
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