EP0820869A1 - Ink jet nozzle head - Google Patents
Ink jet nozzle head Download PDFInfo
- Publication number
- EP0820869A1 EP0820869A1 EP97202087A EP97202087A EP0820869A1 EP 0820869 A1 EP0820869 A1 EP 0820869A1 EP 97202087 A EP97202087 A EP 97202087A EP 97202087 A EP97202087 A EP 97202087A EP 0820869 A1 EP0820869 A1 EP 0820869A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fingers
- actuators
- nozzles
- nozzle head
- 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.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2/14201—Structure of print heads with piezoelectric elements
- B41J2/14274—Structure of print heads with piezoelectric elements of stacked structure type, deformed by compression/extension and disposed on a diaphragm
Landscapes
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Abstract
- a channel plate (12) defining a linear array of equidistant nozzles (14) and a number of parallel ink channels (16) each connected to a respective one of the nozzles,
- an array of fingers (26, 28) disposed on one side of the channel plate (12) and extending in parallel with the ink channels, and
- a backing member (32) disposed on the side of the array of fingers opposite to the channel plate,
- some of the fingers (26) being configured as actuators for exerting mechanical strokes on the ink contained in the ink channels, so as to expel ink droplets from the nozzles, at least one actuator being provided for each nozzle,
- the other fingers (28) serving as support members for supporting the channel plate and the backing member against the reaction forces of the actuators, wherein the pitch (a) of the support members (28) is larger than that (b) of the nozzles (14) and wherein the fingers are evenly distributed over the length of the nozzle array.
Description
It is further possible to omit the
Claims (9)
- Ink jet nozzle head comprising:a channel plate (12) defining a linear array of equidistant nozzles (14) and a number of parallel ink channels (16) each connected to a respective one of the nozzles,an array of fingers (26, 28) disposed on one side of the channel plate (12) and extending in parallel with the ink channels, anda backing member (32) disposed on the side of the array of fingers opposite to the channel plate,some of the fingers (26) being configured as actuators for exerting mechanical strokes on the ink contained in the ink channels, so as to expel ink droplets from the nozzles, at least one actuator being provided for each nozzle,the other fingers (28) serving as support members for supporting the channel plate and the backing member against the reaction forces of the actuators,
- Nozzle head according to claim 1, wherein the pitch (a) of the support members (28) is twice the pitch (b) of the nozzles (14).
- Nozzle head according to anyone of the claims 1 or 2, wherein the fingers (26, 28) are separated by grooves (38, 40) which all have the same width.
- Nozzle head according to anyone of the claims 1 to 3, wherein the ink channels (16) are separated from one another by dam portions (18, 18') and are closed by a flexible vibration plate (20) which transmits the strokes exerted by the actuators (26), and wherein each actuator (26) is in contact with the vibration plate (20) only in a zone (24) which is fully contained within the area of the ink channel (16) and spaced from the dam portions (18, 18'), thereby allowing a bending deformation of the vibration plate under the action of the actuators.
- Nozzle head according to claim 4, wherein the zones of contact between the vibration plate (20) and the actuators (26) are formed by ridges (24) provided on the vibration plate.
- Nozzle head according to claim 5, wherein the zones of contact between the actuators (26) and the vibration plate (20) are defined by ridges provided on the tip ends of the actuators.
- Nozzle head according to any of the preceding claims, wherein the array of fingers (26, 28) is formed by a number of blocks (30) having grooves (38) cut therein for separating the individual fingers, each block (30) being an integral member which comprises at least one support member (28) and a plurality of actuators (26).
- Nozzle head according to claim 7, wherein each block (30) comprises one support member (28) as a central finger and two actuators (26) arranged symmetrically with respect to the support member.
- Nozzle head according to claim 7 or 8, wherein the backing member (32) comprises a number of beams (34) extending in longitudinal direction of the ink channels (16) and respectively disposed on each of the blocks (30).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19970202087 EP0820869B1 (en) | 1996-07-18 | 1997-07-08 | Ink jet nozzle head |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96202042A EP0819523A1 (en) | 1996-07-18 | 1996-07-18 | Ink jet nozzle head |
EP96202042 | 1996-07-18 | ||
EP19970202087 EP0820869B1 (en) | 1996-07-18 | 1997-07-08 | Ink jet nozzle head |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0820869A1 true EP0820869A1 (en) | 1998-01-28 |
EP0820869B1 EP0820869B1 (en) | 2000-05-10 |
Family
ID=26143013
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19970202087 Expired - Lifetime EP0820869B1 (en) | 1996-07-18 | 1997-07-08 | Ink jet nozzle head |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP0820869B1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0875381A3 (en) * | 1997-04-30 | 1999-10-13 | Seiko Epson Corporation | Ink jet recording head |
EP1078761A2 (en) | 1999-08-27 | 2001-02-28 | Océ-Technologies B.V. | Channel structure for an ink jet printhead |
EP1291181A1 (en) * | 2001-09-07 | 2003-03-12 | Océ-Technologies B.V. | Actuating device for a multi-nozzle ink jet printhead |
DE10026133B4 (en) * | 1999-05-28 | 2006-06-29 | Ricoh Printing Systems, Ltd. | Method for manufacturing an inkjet printhead |
EP1886816A1 (en) | 2006-08-11 | 2008-02-13 | Océ-Technologies B.V. | Ink jet device and method of manufacturing the same |
US7976124B2 (en) | 2006-08-11 | 2011-07-12 | Oce-Technologies B.V. | Ink jet device and method of manufacturing the same |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE60040637D1 (en) | 1999-08-27 | 2008-12-11 | Oce Tech Bv | Ink jet print head channel structure |
DE60221327T2 (en) | 2001-09-07 | 2008-04-17 | Océ-Technologies B.V. | Actuator for a multi-jet ink jet head |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3630206A1 (en) * | 1985-09-06 | 1987-03-19 | Fuji Electric Co Ltd | INK JET PRINT HEAD |
US4842493A (en) * | 1986-11-14 | 1989-06-27 | Qenico Ab | Piezoelectric pump |
EP0402172A1 (en) * | 1989-06-09 | 1990-12-12 | Sharp Kabushiki Kaisha | Head for ink-jet printer |
JPH03293143A (en) * | 1990-04-12 | 1991-12-24 | Ricoh Co Ltd | Ink jet recording device |
US5270740A (en) * | 1991-03-26 | 1993-12-14 | Ricoh Company, Ltd. | Ink jet head |
WO1995026271A1 (en) * | 1994-03-29 | 1995-10-05 | Citizen Watch Co., Ltd. | Ink jet head and method of manufacturing the same |
DE19511408A1 (en) * | 1994-03-28 | 1995-10-12 | Seiko Epson Corp | Ink jet recording head |
-
1997
- 1997-07-08 EP EP19970202087 patent/EP0820869B1/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3630206A1 (en) * | 1985-09-06 | 1987-03-19 | Fuji Electric Co Ltd | INK JET PRINT HEAD |
US4842493A (en) * | 1986-11-14 | 1989-06-27 | Qenico Ab | Piezoelectric pump |
EP0402172A1 (en) * | 1989-06-09 | 1990-12-12 | Sharp Kabushiki Kaisha | Head for ink-jet printer |
JPH03293143A (en) * | 1990-04-12 | 1991-12-24 | Ricoh Co Ltd | Ink jet recording device |
US5270740A (en) * | 1991-03-26 | 1993-12-14 | Ricoh Company, Ltd. | Ink jet head |
DE19511408A1 (en) * | 1994-03-28 | 1995-10-12 | Seiko Epson Corp | Ink jet recording head |
WO1995026271A1 (en) * | 1994-03-29 | 1995-10-05 | Citizen Watch Co., Ltd. | Ink jet head and method of manufacturing the same |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 16, no. 132 (M - 1229) 3 April 1992 (1992-04-03) * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0875381A3 (en) * | 1997-04-30 | 1999-10-13 | Seiko Epson Corporation | Ink jet recording head |
DE10026133B4 (en) * | 1999-05-28 | 2006-06-29 | Ricoh Printing Systems, Ltd. | Method for manufacturing an inkjet printhead |
EP1078761A2 (en) | 1999-08-27 | 2001-02-28 | Océ-Technologies B.V. | Channel structure for an ink jet printhead |
EP1291181A1 (en) * | 2001-09-07 | 2003-03-12 | Océ-Technologies B.V. | Actuating device for a multi-nozzle ink jet printhead |
EP1886816A1 (en) | 2006-08-11 | 2008-02-13 | Océ-Technologies B.V. | Ink jet device and method of manufacturing the same |
US7976124B2 (en) | 2006-08-11 | 2011-07-12 | Oce-Technologies B.V. | Ink jet device and method of manufacturing the same |
Also Published As
Publication number | Publication date |
---|---|
EP0820869B1 (en) | 2000-05-10 |
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