EP0726152B1 - Herstellungsverfahren für einen Tintenstrahldruckkopf - Google Patents
Herstellungsverfahren für einen Tintenstrahldruckkopf Download PDFInfo
- Publication number
- EP0726152B1 EP0726152B1 EP96250101A EP96250101A EP0726152B1 EP 0726152 B1 EP0726152 B1 EP 0726152B1 EP 96250101 A EP96250101 A EP 96250101A EP 96250101 A EP96250101 A EP 96250101A EP 0726152 B1 EP0726152 B1 EP 0726152B1
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- EP
- European Patent Office
- Prior art keywords
- chambers
- areas
- plate
- parts
- ink
- 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
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- 238000004519 manufacturing process Methods 0.000 title claims description 29
- 238000000034 method Methods 0.000 claims description 40
- 239000000463 material Substances 0.000 claims description 28
- 238000005530 etching Methods 0.000 claims description 27
- 239000011521 glass Substances 0.000 claims description 16
- 238000000227 grinding Methods 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 8
- 239000004020 conductor Substances 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 7
- 239000013078 crystal Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 239000006089 photosensitive glass Substances 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 230000005855 radiation Effects 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
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- 125000006850 spacer group Chemical group 0.000 description 8
- 238000010276 construction Methods 0.000 description 5
- 238000007641 inkjet printing Methods 0.000 description 5
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- 238000011161 development Methods 0.000 description 3
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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
- B41J2/1626—Manufacturing processes etching
-
- 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
- B41J2/14201—Structure of print heads with piezoelectric elements
- B41J2/14233—Structure of print heads with piezoelectric elements of film type, deformed by bending and disposed on a diaphragm
-
- 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
- B41J2/1607—Production of print heads with piezoelectric elements
- B41J2/161—Production of print heads with piezoelectric elements of film type, deformed by bending and disposed on a diaphragm
-
- 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
- B41J2/1631—Manufacturing processes photolithography
-
- 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
-
- 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
- B41J2/164—Manufacturing processes thin film formation
- B41J2/1646—Manufacturing processes thin film formation thin film formation by sputtering
-
- 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
- B41J2002/14362—Assembling elements of heads
-
- 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
- B41J2002/14379—Edge shooter
-
- 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
-
- 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
- Y10T29/42—Piezoelectric device making
-
- 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
Definitions
- the invention relates to a manufacturing method for an inkjet printhead according to the preamble of claim 1 specified Art.
- Such an ink jet print head can be small fast printers. Such will be for example for franking machines for franking Postage used.
- the chambers are no longer with the smaller chamber area, but now with the larger chamber area parallel to each other.
- DE 34 45 761 A1 describes a process for the production a single plate converter assembly a transducer material known. After coating the lower plate surface with a membrane layer the material is removed from the upper surface, to create separate areas on the Membrane above each pressure chamber (area 25.4 mm * 2.54 mm) are arranged. This eliminates the Need an adhesive connection with adhesive between transducer material and membrane and the uniformity of all distances is improved. The resulting nozzle spacing is, however, relatively large.
- the through openings are made by etching, but not in a parallel process, i.e. not in all parts (plates) manufactured at the same time.
- EP 67 653 already discloses UV exposure and Etching of a photosensitive glass plate known. Indeed here, too, the production of individual ones takes place Serial plates head for head, not parallel. This way of working, in which first separated and then each separated plate part individually edited, gives problems with very small Structures. For high accuracy from very small Structures it is known that when annealing everyone Plate part is subject to an approximately 10% shrinkage. The very small structures result from the Requires a very high image resolution in inkjet printing.
- the one with the face-shooter-ink-jet module with two Groups of. arranged symmetrically to the nozzle line Ink chambers achieved double nozzle density in one So far, series has been used with edge shooter ink jet modules one row of nozzles is not reached. To double the image density to achieve, several rows of nozzles horizontally and vertically offset from each other.
- Such an offset arrangement of two rows of nozzles is also in an edge shooter module - shown in Figure 2 known (First Annual Ink Jet Printing Workshop, March 26-27, 1992, Royal Sonesta Hotel, Cambridge, Massachusetts).
- a module exists from a total of only three parts (glass pieces), one Central part with openings and two side parts each with a row of ink chambers and a row of nozzles on the front of the respective side part.
- the two rows of ink chambers and the rows of nozzles are on the front of each side part offset from each other, which again the ones already mentioned Disadvantages when assembling the module and when controlling it brings with it.
- the process of making the inkjet printhead starts from the CAD development of a printhead design and a mask production for a photosensitive Glass plate.
- nozzle channels are specially treated and the cavities (chambers) and the outer edge the module before the printhead contacts and is assembled.
- the invention assumes that the edge ejection the row of nozzles with a high number of nozzles in one side part of a module can be accommodated. For the first time is a higher nozzle density in the manner according to the invention, completely independent of the dimensions of the ink chambers, reachable.
- Such an inkjet print head can advantageously be made up of several modules, whereby only one of the modules carries the nozzle row or off consists of a multi-part module. It is still provided that the front edge of the chambers bearing Part that carries the row of nozzles, on the edge or in the Middle of a module is arranged.
- FIG. 1a shows the known principle of an edge shooter inkjet print head in perspective view shown. It consists of a module on the Front two offset to each other in the y direction There are rows of nozzles. Thereby belongs to the nozzle group 1.1 the first row a first group 101 of ink chambers and a group to the nozzle group 1.2 of the second row 102 on ink chambers.
- FIG. 1b shows the known principle of a face shooter ink jet ink jet print head in perspective Shown view. It consists of a module in its base two to each other in the z direction offset nozzle groups 1.1 and 1.2 in a row lie. An intake chamber 151 or 152 becomes in each case a group of ink chambers 101 and 102 for the nozzle group 1.1 or for the offset nozzle group 1.2 inked.
- Figure 1c shows a perspective view of the invention Principle of an edge shooter ink jet in-line print head (ESIJIL). It consists of a module on the end face k ⁇ 2 horizontally to each other offset nozzle groups 1.1, 1.2 etc. in a row lie. Ink flow from chamber groups 101-104 in the volume of the module is on the front edge of the first Chamber-bearing part, which is quasi a side part of the module forms. The chambers of a group 101-104 are staggered in the y direction and theirs associated outgoing ink channels are thus sent to the Print edge led that they form nozzles 1.1 - 1.4, the however, there are very few in a row Distance. This is achieved in FIG.
- ESIJIL edge shooter ink jet in-line print head
- Fig. 1c in which the outgoing ink channels a certain have a lateral offset in the z direction.
- the chambers in another embodiment 101 - 104 even this lateral offset in the z direction exhibit.
- the sequence of such Orders finally give the desired number Nozzles in a row.
- Fig. 1c are the overview for the sake of only two such arrangements.
- the ink drops are made from the Nozzles ejected in the x direction.
- the axes x, y, z are orthogonal to each other.
- the addition further chambers 105, 106 etc. in the y direction in principle possible, and only from the effort limited. Its positive effect, namely education only a row of nozzles with minimal nozzle spacing the inventive principle already with 2 chamber groups 101 and 102.
- the structure of a known - shown in Figure 2 - double row edge shooter ink jet module consists of 3 Ceramic or glass parts.
- a first part which on carries a first chamber group on its left side over a middle part with a second part, which on on its right side carries a second chamber group, see above connected in the y direction that the chambers on the inside of the middle part fit and side to side (horizontal) are offset.
- Each chamber is through a first channel with a suction space and with a second channel connected to the front edge of the module. Every second Channels form a nozzle. It is relatively difficult Keep the distance between the two rows of nozzles exactly. Deviations lead but with constant timing of the two rows of nozzles to deviations in Print image, which reduces the print quality.
- the middle part has a first opening that the Intake spaces of both outer parts with each other and with one Ink supply port connects. There are also openings available for the fasteners.
- An ink chamber group 101 and the suction space 15 are not on the in Figure 3 visible left side of the first part 2.
- the second Part 4 contained chambers carries no nozzles but only still the second ink chamber group 102, which over the second openings 14 of the middle part 3 supplied with ink becomes.
- the associated other nozzles are over the third openings of the middle part 3 with the ink chambers of the second part 4 connected.
- Parts 2 - 4 are mounted in the direction of the y-axis.
- the X-ray image of the Top view of ESIJIL printhead modules illustrates the in-line arrangement of the nozzles and the lateral offset of the ink chamber groups 101 des first chamber-bearing part 2 and the group 102 of the second chamber-bearing part 4, shows the location the first opening 18 in the middle part 3 to the Ink supply opening 16 and the suction space 15, the second openings 14, which with the suction chamber 15 in Connect and the third openings 9 that the Feed ink to the nozzles of the second nozzle group 1.2. It is envisaged that the nozzles of the nozzle group 101 with the nozzles of the nozzle group 102 within the Alternate row of nozzles.
- FIG. 5a A detail of the X-ray image is shown in FIG. 5a the figure 4 shown enlarged.
- the one in the first part 2 located chambers 11 of the first chamber group 101 Nozzles of the first nozzle group 1.1 in the same part 2 assigned.
- Chamber 11 becomes suction chamber 15 supplied with ink via one of the channels 13.
- FIG. 5b On corresponding section on line A-A through the Drawing in Figure 5a is shown in Figure 5b.
- the chambers 12 of the second located in the second part 4 Chamber group 102 are nozzles of the second nozzle group 1.2 assigned in the other chambers bearing part 2, as from the section B-B shown in Figure 5c is.
- Figures 6a, b, c and d show a second variant the solution according to the invention.
- Figure 6a again a top view of a detail as an X-ray image
- Figure 6d is a front view of a Printhead shown as an X-ray image.
- the x-ray cuts C-C, D-D and E-E are shown in the view Figure 6d overlaid. This becomes in connection with the 6a shows the position of the ink chamber groups 101, 102, 103 and 104 can be seen.
- Figure 6b shows one Overlays of sections through lines A-A and A1-A1 of Figures 6a and 6d.
- Figure 6c shows one Overlays of sections through lines B-B and B1-B1 of Figures 6a and 6d.
- a second group of nozzles each 1.2 in the first part is related to a chamber 12 of the second chamber group 102 in the second chamber Part facing a chamber 11 of the first Chamber group 101 of the first chamber-bearing part 2 is arranged offset, the second chamber group 102 supplied with ink through openings 14 in the center piece 3 becomes.
- 3 second openings are in the center piece 14 for supplying the second nozzle group 1.2 with ink available.
- Opposite the openings 9 in each The centerpiece is openings 10 in each of the first chambers supporting part and a connection of the second chambers supporting part for connecting the chambers of each second chamber group 102 with the nozzle channels of the second Nozzle group 1.2 in the first chambers Item available.
- each The first chamber-bearing part is supplied of the ink chambers 11, 12 in the first and each second chamber-bearing part.
- the ink supply to the Intake space 15 takes place via an opening 16 in that Part 2, which is a side part of the printhead forms, and via corresponding openings 18, 22 in respective center piece and further openings 17, 19, 21 in the chambers bearing parts 2, 4, 6 and one Opening 20 in the spacer 5.
- a - not shown in Figures 1 to 6a - piezoelectric Element 31 serves as a well known Means for expelling ink from a chamber and can be placed on the chamber surface or in the chamber to be a pressure over at his arousal the compliant chamber wall onto the ink liquid in the chamber to exercise, causing an ink jet to escape from the nozzle connected to the chamber leads.
- the chamber 12 of the element 31 through a thin from the material of the chambers load-bearing part 4 existing layer 30 separately, which is so elastic that the bending energy of the Elements 31 is only slightly damped.
- Spacer 5 has a corresponding recess 32 for the piezoelectric element 31.
- openings 9 and 10 are also two rows Can be arranged on lines C-C and D-D.
- a module is composed of 3 parts each and is provided with piezoelectric elements and contacted.
- a second module is joined together with the first module via a spacer 5 to form an ESIJIL printhead, the second module with parts 6, 7, 8 not having any nozzles, but only corresponding openings which correspond to the openings provided in parts 2 , 3, 4 of the first module are connected.
- an ESIJIL print head is made built into a single multi-part module.
- FIG. 7a is a front view with the in-line nozzle row and in FIG. 7b an X-ray image of the front view or an overlay of the cuts lines C-C and E-E are shown.
- On this line C-C are all third openings.
- More openings a line D-D are not provided. It is recognizable that only the nozzle dimensions the maximum Determine the number of nozzles in the row. Exists Need for increased chamber dimensions, should only the volume of the printhead can be increased. Of course, it is also possible if necessary, higher tolerance requirements due to such in the Figures 6 explained measures with third openings to solve on a line D-D.
- the spacers in two parts consist of the same material as the piezoelectric elements (marked in black). These elements are made from the worked out piezoelectric material, which is arranged on the chamber surface, however the edge is preserved and only in the immediate Surroundings of the elements 31 create cavities 32. in the Border are both ink supply openings as well second and third openings worked out. After this the piezoelectric elements are worked out, these are contacted, with conductor tracks also on the chamber floor and / or outside on the layer 30 can.
- FIG. 8 shows the individual steps for a manufacturing process of the ESIJIL printhead shown.
- the process of making the inkjet printhead starts from the CAD development of a printhead design and a mask production for a photosensitive Glass plate.
- Using masks that reflect the structure of the different parts to be produced is a photosensitive Masked from amorphous glass and UV radiation exposed.
- the irradiated areas can later etched about 100 times faster than unirradiated ones Areas. After a heat treatment repeated UV radiation.
- To the parallel processing steps for several Part of a module includes masking and subsequent Etching the through openings.
- the old one Mask layer by fine grinding the surface of the Chamber parts removed. Then the surface masked in areas that are not deeply etched should. After the ink chambers are etched a fine grinding of the individual parts to final dimensions and a subsequent masking to create the supply channels and the ink nozzle channels, which are less Depth than the chambers should have. The material removal done again by etching. In a special case only the etching sensitivity of the UV-irradiated areas exploited the material and a mask can omitted.
- the depth accuracy when etching the areas for continuous Holes is smaller than when etching very flat areas for the channels in the parts carrying the chambers and first the through holes, then the Chambers and then the nozzle channels are etched. It is further provided that the thickness of the bottom layer 30th is monitored during the etching of the chambers and that the for Completion of the manufacture of the chambers required Thickness of the bottom layer 30 of the chambers by fine grinding each of the parts carrying the chambers is reached.
- the individual parts are connected in a module, whereby the individual parts are aligned. After sticking together of the individual parts, a module was created, which is then annealed. When tempering finds a phase transition from amorphous to in the glass material crystalline instead.
- nozzle channels are specially treated and the cavities (chambers) and the outer edge the module before the printhead contacts and is assembled.
- the application of the electrical conductor tracks to the Chamber surface, the application of the piezo crystals and the contact is made in a known manner Wise.
- the piezo crystals can be glued on individually are followed by curing.
- it can also a layer of piezoelectric material be applied to the surface of the chamber, which is then structured and contacted.
- the coating can be done by sputtering.
- the manufacture of chambers and through holes in the individual parts can be in a further variant of the manufacturing process in one step. To do this, it is necessary that the UV exposure is repeated through different masks before the Plate is etched. Another possibility is in UV exposure with different intensities. The plate then points in different areas a different sensitivity when etching. The dividing line between the individual parts is also etched with, which simplifies subsequent separation.
- the mask to be applied contains recessed areas for the chambers and the bores at the same time. After the etching, fine grinding is carried out to the final dimension, when the thickness of the layer 30 reaches the bottom of the chamber becomes.
- the manufacture of the ink nozzles and the piezoelectric Elements, as well as the edge production, takes place to the above known way. In this variant is used to contact the bottom of the chamber. Subsequently the plate is divided into individual parts that then be assembled into a module.
- the back the chamber surface with piezoelectric elements assembled and contacted can be provided with conductor tracks. Thereby can lead from the other layers too the upper layers of the module are cross-free, even if there are a lot of elements to contact.
- the Module parts are aligned and stapled together and annealed, with a phase transition of amorphous too crystalline. It is contemplated that spacers lie between the modules or additionally arranged are and that the spacers from the plate material or from one to the surface of the plate applied layer of piezoelectric material can be produced, structuring by etching he follows.
- a printhead can be assembled from several modules be or consists of only one module that follows has externally guided conductor tracks, which makes external contact become.
- the print head is finally in one Housing housed and can function be tested to remove faulty copies.
- the invention is not based on the present embodiment limited. Rather is a number of Variants conceivable, which of the solution shown even with fundamentally different types Make use.
Description
- Durch die in demselben Glasstück angeordneten Düsen, ist es möglich, für alle Düsen eine gleichbleibende Düsengröße und einen gleichen Abstand zu erreichen. Das ist dann der Fall, wenn vor dem Diffusions-Bond-Prozeß entsprechende Kanäle in das das Seitenteil des Moduls bildende Glasstück geätzt werden. Das reduziert auch die Herstellungskosten.
- Gegenüber der üblichen Konstruktion mit einer horizontalen Ausrichtung von zwei Reihen von Düsen ist ein Überlappen des jeweils zweiten Kammern tragenden Teils mit einer versetzten Kammergruppe mit größerer Toleranz möglich.
- Die erfindungsgemäße vertikale Ausrichtung des Teils mit den Düsen und eines Kammern tragenden Teils mit einer seitlich versetzten Kammergruppe ist unkritisch, da alle Düsen nur auf einer Seite des Druckkopfes sind. Dies reduziert auch die Kosten.
- Die Düsenreihe macht es in unaufwendiger Weise möglich, den Druckkopf in einer geneigten Anordnung zum Aufzeichnungsträger anzuordnen.
- Die elektrische Ansteuerung des Tintenstrahldruckkopfes kann einfacher ausgeführt werden, weil keine Kompensation des Düsenreihenabstandes durch zeitliche Staffelung der Drucksteuersignale erforderlich ist.
- Figur 1a,
- Prinzip eines Edge-Shooter-Ink-Jet-Druckkopfes nach dem Stand der Technik
- Figur 1b,
- Prinzip eines Face-Shooter-Ink-Jet-Druckkopfes nach dem Stand der Technik
- Figur 1c,
- Prinzip des erfindungsgemäßen Aufbaues eines Edge-Shooter-Ink-Jet-In-Line-Druckkopfes
- Figur 2,
- Aufbau eines Edge-Shooter-Ink-Jet-Druckkopfes nach dem Stand der Technik
- Figur 3,
- Aufbau des ESIJIL-Druckkopfes in einer ersten Variante
- Figur 4,
- Röntgenbild des ESIJIL-Druckkopfes in Draufsicht,
- Figur 5a,
- Detail des Röntgenbildes
- Figur 5b,
- Schnitt durch die Linie A-A
- Figur 5c,
- Schnitt durch die Linie B-B
- Figur 6a,
- Detail des Röntgenbildes einer zweiten Variante des ESIJIL-Druckkopfes in Draufsicht,
- Figur 6b,
- Schnitt durch die Linie A-A
- Figur 6c,
- Schnitt durch die Linie B-B
- Figur 6d,
- Röntgenbild der Frontansicht
- Figur 7a,
- Frontansicht einer dritten Variante des ESIJIL-Druckkopfes,
- Figur 7b,
- Röntgenbild der Frontansicht nach Figur 7a
- Figur 8,
- Herstellungsverfahren für den ESIJIL-Druckkopfes,
Das Herstellungsverfahren geht davon aus, daß ein Modul aus jeweils 3 Teilen zusammengesetzt ist und mit piezoelektrischen Elementen versehen und kontaktiert wird. Ein zweiter Modul wird mit dem ersten Modul über ein Abstandsteil 5 zu einem ESIJIL-Druckkopf zusammengefügt, wobei der zweite Modul mit den Teilen 6, 7, 8 keine Düsen aufweist, sondern nur entsprechende Öffnungen, die mit den dafür vorgesehenen Öffnungen in den Teilen 2, 3, 4 des ersten Moduls in Verbindung stehen.
Claims (21)
- Verfahren zur Herstellung von Tintenstrahldruckköpfen, die aus mindestens einem Modul bestehen, wobei das Modul mindestens aus einem Kammern tragenden Teil (2) und einem weiteren Teil (3) gebildet wird, mit den Schritten:parallele Plattenbearbeitung photosensitiver Glasplatten bei der Herstellung von durchgehenden Bohrungen in allen Teilen, wobei Masken für den Vorbehandlungsprozeß von Plattenmaterial erstellt werden, um aus dem Plattenmaterial Bereiche für mindestens die Tintenkammern, Düsenkanäle und Zuführungskanäle, für den Ansaugraum und für durchgehende Öffnungen gezielt entfernen zu können, wobei im Vorbehandlungsprozeß Platten über Masken mindestens einmal einer Bestrahlung mit Uv-Licht entsprechender Wellenlänge mit anschließender Wärmebehandlung ausgesetzt werden, wobei in einem parallelen Prozeß die zu entfernenden Bereiche aus der Platte herausgeätzt werden,Separieren von Einzelteilen aus den Glasplatten und Herstellen der Tintenkammern in den Kammern tragenden Einzelteilen (2, 4), welches ein Tiefenätzen der nicht maskierten Bereiche einschließt,Verbinden der Einzelteile (2, 3 und 4) zu mindestens einem Modul mit anschließendem Tempern,Aufbringen und Kontaktieren der piezoelektrischen Elemente mit aufgebrachten Leiterbahnen sowieAssemblieren zum Druckkopf.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß im Vorbehandlungsprozeß der Platten alle zu entfernenden Bereiche mit UV-Licht gleicher Wellenlängen und Intensität ausgesetzt werden, daß vor dem Herausätzen der photosensibilisierten Bereiche der Platte eine erste Maske auf die Platte aufgebracht wird, wodurch erste Bereiche aus der Platte herausgeätzt werden, daß nach dem Herausätzen der ersten Bereiche die erste Maske wieder entfernt und eine zweite Maske auf die Platte aufgebracht wird, um zweite Bereiche aus der Platte herauszuätzen, daß nach dem Herausätzen der zweiten Bereiche die zweite Maske wieder entfernt und daß dritte Bereiche aus der Platte herausgeätzt werden.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß im Vorbehandlungsprozeß unterschiedliche Masken für das Plattenmaterial in Einsatz kommen, wobei Bereiche der Platte einer öfteren oder stärkeren Bestrahlung mit UV-Licht entsprechender Wellenlängen ausgesetzt sind als andere Bereiche der Platte, wodurch die Bereiche des Plattenmaterials, die unterschiedlich sensibilisiert für das Ätzmittel sind, entstehen, daß im Prozeß der parallelen Plattenbearbeitung eine Maske für unterschiedlich tief zu entfernende Bereiche auf die Platte aufgetragen wird und daß ein Ätzmittel bestimmter Konzentration zum Einsatz kommt.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß für die drei Bereiche Ätzmittel mit unterschiedlicher Konzentration zum Einsatz kommen, um die entsprechenden Bereiche mit unterschiedlicher Tiefengenauigkeit entfernen zu können, wobei die Tiefengenauigkeit beim Ätzen der Bereiche für durchgehende Bohrungen geringer ist als beim Ätzen sehr flacher Bereiche für die Kanäle in den Kammern tragenden Teilen und wobei zuerst die durchgehenden Bohrungen, dann die Kammern und dann die Düsenkanäle geätzt werden.
- Verfahren nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, daß die Dicke der Bodenschicht (30) beim Ätzen der Kammern überwacht wird und daß die zum Abschluß der Herstellung der Kammern erforderliche Dicke der Bodenschicht (30) der Kammern durch Feinschleifen jeder der Kammern tragenden Teile erreicht wird.
- Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß die Kammern tragenden Teile nach dem Feinschleifen der Oberfläche maskiert werden, daß durch Tiefenätzen der nicht maskierten Bereiche Hohlräume oder/und Tintenkammern in den Kammern tragenden Teilen erzeugt werden, daß durch Feinschleifen auf Endmaß der einen Oberfläche die Tiefe der Kammern, daß durch Feinschleifen auf Endmaß der anderen Oberfläche die erforderliche Dicke der Bodenschicht (30) am Kammergrund exakt eingestellt und daß durch das Feinschleifen die Maske für das Tiefenätzen entfernt wird sowie daß anschließend ein Ätzen der Tintendüsen erfolgt.
- Verfahren nach dem Anspruch 6, dadurch gekennzeichnet, daß beim Ätzen der Tintendüsen im wesentlichen photosensibilisiertes Plattenmaterial entfernt wird oder daß vor dem Ätzen eine dritte Maske aufgebracht wird.
- Verfahren nach den Ansprüchen 1, 3, 5 und 7, dadurch gekennzeichnet, daß die Herstellung der Hohlräume, Kammern und durchgehenden Bohrungen parallel in einem Schritt erfolgt, nachdem die zu entfernenden Bereiche auf dem Plattenmaterial unterschiedlich photosensibilisiert worden sind, woraus eine unterschiedliche Ätzgeschwindigkeit resultiert, daß nach der Herstellung der erforderlichen Tiefe der Hohlräume und der Kammern und der erforderlichen Dicke der Bodenschicht (30) der Kammern tragenden Teile eine Separierung in Einzelteile vorgenommen wird, daß anschließend die Tintendüsen in die Kammern tragenden Teile geätzt werden.
- Verfahren nach Anspruch 8, dadurch gekennzeichnet, daß im parallelen Plattenbearbeitungsprozeß die Trennlinien zwischen den Einzelteilen auf der Platte mit angeätzt werden, um ein nachfolgendes Separieren zu erleichtern.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß nach Ätzen der Tintendüsen mindestens vereinzelte Plattenteile, wie Kammern tragende Teile, Mittelteile zu einem Modul zusammengefügt werden, wobei nach einem Ausrichten der Einzelteile ein Aneinanderheften erfolgt, daß die aneinander gehefteten Einzelteile miteinander dauerhaft verbunden werden und anschließend eine gerade Stirnkante durch Abschneiden der Düsenspitzen und durch Feinschleifen eine ebene Oberfläche der Stirnkante entsteht, daß durch Spülen der Hohlräume des Moduls mit einer ersten Spezialflüssigkeit eine hydrophile Innenbeschichtung und durch eine Behandlung der Oberfläche der Stirnkante mit einer zweiten Spezialflüssigkeit eine hydrophobische Außenbeschichtung, welche anschließend ausgehärtet werden, entstehen.
- Verfahren nach einem der vorhergehenden Ansprüche 1 bis 10, dadurch gekennzeichnet, daß nach dem Herstellen der Düsen und der Beschichtung ein Aufbringen der elektrischen Leiterbahnen und der Piezokristalle auf den Kammergrund oder/und auf die Außenoberfläche der Bodenschicht (30) sowie daß ein Kontaktieren erfolgt.
- Verfahren nach Anspruch 11, dadurch gekennzeichnet, daß die Piezokristalle aufgeklebt werden und die Klebeverbindung ausgehärtet wird.
- Verfahren nach Anspruch 10, dadurch gekennzeichnet, daß die Platte, aus welcher die Einzelteile hergestellt werden, aus amorphem, photoseniblem Glas besteht, daß die dauerhafte Verbindung der Einzelteile zu einem Modul durch Tempern erfolgt, wobei die Temperatur so gewählt ist, daß ein Phasenübergang von amorph zu kristallin erfolgt.
- Verfahren nach Anspruch 11, dadurch gekennzeichnet, daß das Aufbringen der Leiterbahnen und/oder einer Schicht aus piezoelektrischem Material durch Sputtern erfolgt, daß die piezoelektrische Schicht strukturiert und kontaktiert wird.
- Verfahren nach einem der vorhergehenden Ansprüche 1 bis 14, dadurch gekennzeichnet, daß einzelne Module über mindestens ein Abstandsteil miteinander verbunden zu einem Tintenstrahldruckkopf assembliert werden oder ein mehrteiliges Modul verwendet wird, und daß ein Einbau des Tintenstrahldruckkopfes in ein Gehäuse und ein Herstellen von elektrischen Verbindungen erfolgt.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Abstandsteile aus dem Plattenmaterial oder aus einer auf die Oberfläche der Platte aufgebrachten Schicht aus piezoelektrischem Material hergestellt werden, wobei ein Strukturieren durch Ätzen erfolgt.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Abstandsteile aus dem Plattenmaterial im parallelen Plattenbearbeitungsprozeß vor dem Separieren strukturiert werden.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß eine Düsenreinigung mittels Druckluft nach Fertigstellung eines jeden Moduls und/oder nach Fertigstellung des Druckkopfes erfolgt.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß nach Fertigstellung des Druckkopfes dessen Funktionsfähigkeit getestet wird und daß fehlerhafte Exemplare ausgesondert werden.
- Verfahren nach Anspruch 19, dadurch gekennzeichnet, daß während des parallelen Plattenbearbeitungsprozesses oder danach ein Aufbringen von elektrischen Leiterbahnen auf die Mittelteile erfolgt, um eine kreuzungsfreie Leitungsführung zu erzielen.
- Verfahren nach einem der vorhergehenden Ansprüche 1 bis 20, dadurch gekennzeichnet, daß das Plattenmaterial aus einer photosensiblen Keramik und/oder ein zweites Plattenmaterial aus photosensiblem, amorphem Glas besteht, daß mindestens ein Einzelteil eines Moduls aus Glas- oder Keramikmaterial hergestellt wird und daß zum Verbinden der Einzelteile eine Klebeverbindung eingesetzt wird.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4225799A DE4225799A1 (de) | 1992-07-31 | 1992-07-31 | Tintenstrahldruckkopf und Verfahren zu seiner Herstellung |
DE4225799 | 1992-07-31 | ||
EP93250012A EP0581395B1 (de) | 1992-07-31 | 1993-01-12 | Tintenstrahldruckkopf |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93250012A Division EP0581395B1 (de) | 1992-07-31 | 1993-01-12 | Tintenstrahldruckkopf |
EP93250012.7 Division | 1993-01-12 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0726152A2 EP0726152A2 (de) | 1996-08-14 |
EP0726152A3 EP0726152A3 (de) | 1996-10-09 |
EP0726152B1 true EP0726152B1 (de) | 2001-04-18 |
Family
ID=6464838
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93250012A Expired - Lifetime EP0581395B1 (de) | 1992-07-31 | 1993-01-12 | Tintenstrahldruckkopf |
EP96250101A Expired - Lifetime EP0726152B1 (de) | 1992-07-31 | 1993-01-12 | Herstellungsverfahren für einen Tintenstrahldruckkopf |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93250012A Expired - Lifetime EP0581395B1 (de) | 1992-07-31 | 1993-01-12 | Tintenstrahldruckkopf |
Country Status (5)
Country | Link |
---|---|
US (2) | US5592203A (de) |
EP (2) | EP0581395B1 (de) |
JP (2) | JP3199917B2 (de) |
CA (1) | CA2101683C (de) |
DE (3) | DE4225799A1 (de) |
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-
1992
- 1992-07-31 DE DE4225799A patent/DE4225799A1/de not_active Ceased
-
1993
- 1993-01-12 DE DE59310165T patent/DE59310165D1/de not_active Expired - Fee Related
- 1993-01-12 EP EP93250012A patent/EP0581395B1/de not_active Expired - Lifetime
- 1993-01-12 DE DE59305846T patent/DE59305846D1/de not_active Expired - Fee Related
- 1993-01-12 EP EP96250101A patent/EP0726152B1/de not_active Expired - Lifetime
- 1993-07-29 JP JP18801893A patent/JP3199917B2/ja not_active Expired - Fee Related
- 1993-07-30 CA CA002101683A patent/CA2101683C/en not_active Expired - Fee Related
- 1993-08-02 US US08/101,449 patent/US5592203A/en not_active Expired - Lifetime
-
1997
- 1997-11-03 US US08/963,174 patent/US5802687A/en not_active Expired - Fee Related
-
2001
- 2001-04-03 JP JP2001105110A patent/JP3466577B2/ja not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4680595A (en) * | 1985-11-06 | 1987-07-14 | Pitney Bowes Inc. | Impulse ink jet print head and method of making same |
US4703333A (en) * | 1986-01-30 | 1987-10-27 | Pitney Bowes Inc. | Impulse ink jet print head with inclined and stacked arrays |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202017106430U1 (de) | 2017-10-24 | 2018-10-25 | Francotyp-Postalia Gmbh | Gutverarbeitungsgerät |
Also Published As
Publication number | Publication date |
---|---|
JP3466577B2 (ja) | 2003-11-10 |
CA2101683C (en) | 1998-11-24 |
EP0726152A3 (de) | 1996-10-09 |
EP0581395A2 (de) | 1994-02-02 |
US5592203A (en) | 1997-01-07 |
DE59310165D1 (de) | 2001-05-23 |
DE59305846D1 (de) | 1997-04-24 |
EP0581395A3 (en) | 1994-08-24 |
US5802687A (en) | 1998-09-08 |
JP3199917B2 (ja) | 2001-08-20 |
CA2101683A1 (en) | 1994-02-01 |
JP2001293866A (ja) | 2001-10-23 |
EP0726152A2 (de) | 1996-08-14 |
JPH06155739A (ja) | 1994-06-03 |
EP0581395B1 (de) | 1997-03-19 |
DE4225799A1 (de) | 1994-02-03 |
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