WO1994016899A1 - Buse d'imprimante a jet d'encre - Google Patents
Buse d'imprimante a jet d'encre Download PDFInfo
- Publication number
- WO1994016899A1 WO1994016899A1 PCT/GB1994/000144 GB9400144W WO9416899A1 WO 1994016899 A1 WO1994016899 A1 WO 1994016899A1 GB 9400144 W GB9400144 W GB 9400144W WO 9416899 A1 WO9416899 A1 WO 9416899A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- nozzle
- shoulder
- stepped bore
- nozzle assembly
- seal ring
- Prior art date
Links
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
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2/1433—Structure of nozzle plates
Definitions
- the present invention relates to an ink jet printer nozzle assembly of the type comprising one or more nozzles mounted in a nozzle plate.
- Nozzle assemblies of this type are well known and usually comprise a jewel nozzle in which an orifice is formed to a required shape and dimensions and a nozzle- supporting plate having a stepped bore into which the nozzle is fixed by means of adhesive. Adhesive is used in order to assure a permanent, rigid attachment of the nozzle in the nozzle plate.
- a nozzle assembly for an ink jet printer comprising a nozzle mounted in a stepped bore in a supporting nozzle plate, the nozzle being disposed on a supporting shoulder within the stepped bore, sealed thereto by a resilient seal ring disposed between the nozzle and the shoulder, and retained therein by a crimp of the nozzle plate surface.
- the invention also includes a method of manufacturing a nozzle assembly of this type, in which the nozzle is disposed on a supporting shoulder within the stepped bore of the nozzle plate, a resilient seal ring is provided between the shoulder and the nozzle, and the nozzle is retained within the stepped bore by crimping of the nozzle plate surface around the open end of the stepped bore.
- the seal ring preferably comprises a seal ring which is formed of FTFE or other similar compliant material, to provide a secure seal between the underside of the nozzle and the shoulder in the stepped bore.
- the shoulder may include a retained seal disposed, for example in an annular groove in the shoulder or the adjacent wall of the bore.
- Crimping the nozzle in position enables the problems associated with adhesive fixing to be overcome and, in particular, enables the nozzle to be accurately positioned in parallelism with the nozzle plate to ensure the precise location of the jet of ink which issues therefrom in use.
- the nozzle may be initially held in position within the stepped bore by a cylindrical guide around which an annular crimping tool may slide, so as to be driven against the edge of the open end of the bore around the nozzle, to produce the crimp.
- Fig. 1 is a side elevation, partly sectioned, of a nozzle plate and printing tool
- Fig. 2 is an enlarged view of the crimp head of a crimping tool
- Fig. 3 is an enlarged view of a location pin for locating the plate relative to the tool.
- Fig. 4 is a plan view of the PTFE seal.
- Figure 1 shows a nozzle plate 1 positioned on the base plate 2 of a crimping tool, the base plate 2 having a hardened steel locating pin 3 which locates within a bore
- Figure 1 shows the finished nozzle plate, after crimping of the jewel 7 into position in the counterbore 5 has taken place, an annular crimp 9 being shown.
- a cylindrical guide 10 is first lowered into position on top of the jewel 7 and thereafter the annular crimping head 11 of the crimping tool is thrust downwardly around the cylindrical guide 10 into engagement with the upper surface 12 of the nozzle plate immediately around the end of the counterbore 5 in order to form the crimp.
- PTFE seal 6 supports the jewel or nozzle in the counterbore 5 at a predefined position so that the nozzle or jewel 7 is always fixed in the same relative position within the nozzle plate, thus ensuring consistency of dimensions across different nozzle assemblies.
Landscapes
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Abstract
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6516822A JPH08506065A (ja) | 1993-01-27 | 1994-01-26 | インクジェットプリンタのノズルアセンブリ |
DE69401338T DE69401338T2 (de) | 1993-01-27 | 1994-01-26 | Düsenaufbau für einen tintenstrahldrucker |
EP94904720A EP0681528B1 (fr) | 1993-01-27 | 1994-01-26 | Buse d'imprimante a jet d'encre |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9301625.1 | 1993-01-27 | ||
GB939301625A GB9301625D0 (en) | 1993-01-27 | 1993-01-27 | Ink jet printer nozzle assembly |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994016899A1 true WO1994016899A1 (fr) | 1994-08-04 |
Family
ID=10729426
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1994/000144 WO1994016899A1 (fr) | 1993-01-27 | 1994-01-26 | Buse d'imprimante a jet d'encre |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0681528B1 (fr) |
JP (1) | JPH08506065A (fr) |
DE (1) | DE69401338T2 (fr) |
GB (1) | GB9301625D0 (fr) |
WO (1) | WO1994016899A1 (fr) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2208339A5 (fr) * | 1972-11-29 | 1974-06-21 | Ibm | |
EP0232062A2 (fr) * | 1986-02-04 | 1987-08-12 | Domino Printing Sciences Plc | Générateur d'un jet de gouttelettes d'encre |
JPS6364755A (ja) * | 1986-09-08 | 1988-03-23 | Hitachi Ltd | 記録ヘツド |
-
1993
- 1993-01-27 GB GB939301625A patent/GB9301625D0/en active Pending
-
1994
- 1994-01-26 WO PCT/GB1994/000144 patent/WO1994016899A1/fr active IP Right Grant
- 1994-01-26 JP JP6516822A patent/JPH08506065A/ja active Pending
- 1994-01-26 DE DE69401338T patent/DE69401338T2/de not_active Expired - Fee Related
- 1994-01-26 EP EP94904720A patent/EP0681528B1/fr not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2208339A5 (fr) * | 1972-11-29 | 1974-06-21 | Ibm | |
EP0232062A2 (fr) * | 1986-02-04 | 1987-08-12 | Domino Printing Sciences Plc | Générateur d'un jet de gouttelettes d'encre |
JPS6364755A (ja) * | 1986-09-08 | 1988-03-23 | Hitachi Ltd | 記録ヘツド |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 12, no. 289 (M - 728)<3136> 8 August 1988 (1988-08-08) * |
Also Published As
Publication number | Publication date |
---|---|
JPH08506065A (ja) | 1996-07-02 |
GB9301625D0 (en) | 1993-03-17 |
EP0681528A1 (fr) | 1995-11-15 |
DE69401338T2 (de) | 1997-04-24 |
EP0681528B1 (fr) | 1997-01-02 |
DE69401338D1 (de) | 1997-02-13 |
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