A liquid discharge head and a method of manufacture therefor
Abstract
A liquid discharge head comprises liquid flow paths communicated with liquid discharge port for discharging liquid, bubble generating energy means for creating bubbles in order to discharge the liquid from the liquid discharge port, and movable members facing bubble generating areas for the creation of the bubbles, having free ends on the discharge port side to guide the bubbles to the discharge port side. For this liquid discharge head, the movable members and members capable of presenting electrically conductive relations with the movable members are arranged to satisfy the structural relations of liquid contact surface which do not allow electrolytic corrosion to occur. In this way, almost no deterioration of the members may take place due to electrolytic corrosion caused by liquid to be used and the liquid supply source as well, hence implementing the enhancement of durability of the movable members and the performance of the stabilized discharges of liquid for a long time as well.

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Projected expiry passed 25 August 2018, 8.1 years ago.
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1 sheet
Sheet 1
Every citation, both waysCites: the store holds 4 of 5
| Document | Relation | Office | Category | Cited during | Relevant claims |
|---|---|---|---|---|---|
| EP0761439A2 | Cites | European Patent Office (EPO) | X | Search report | 1-7 |
| EP0895861A1 | Cites | European Patent Office (EPO) | E | Search report | 1-6,14 |
| US4654676A | Cites | United States of America | A | Search report | – |
| US5278585A | Cites | United States of America | X | Search report | 1,2 |
| PATENT ABSTRACTS OF JAPAN vol. 1997, no. 07 31 July 1997 (1997-07-31) | Non-patent | – | – | Search report | – |
| PATENT ABSTRACTS OF JAPAN vol. 1996, no. 11 29 November 1996 (1996-11-29) | Non-patent | – | – | Search report | – |
| PATENT ABSTRACTS OF JAPAN vol. 010, no. 077 (M - 464) 26 March 1986 (1986-03-26) | Non-patent | – | – | Search report | – |
8 members in 4 offices
Priority claims4
| Document | Office | Kind | Date |
|---|---|---|---|
| 22965597 | Japan | A | |
| 22965597 | Japan | – | |
| 22965597 | – | – | – |
| JP19970229655 | – | – | – |
Members8
| Document | Office | Kind | |
|---|---|---|---|
| JPH1158743A | Japan | A | |
| EP0899104A2 | European Patent Office (EPO) | A2 | |
| EP0899104A3This record | European Patent Office (EPO) | A3 | |
| US6273556B1 | United States of America | B1 | |
| EP0899104B1 | European Patent Office (EPO) | B1 | |
| DE69819978D1 | Germany | D1 | |
| JP3524340B2 | Japan | B2 | |
| DE69819978T2 | Germany | T2 |
32 legal events, as 3 offices reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | Office | |
|---|---|---|---|
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Notification of lapseLapsedST | ST | FR | |
| Gb: european patent ceased through non-payment of renewal feeCeasedGBPC | GBPC | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| No opposition filedOpposition26N | 26N | EP | |
| No opposition filed within time limitOppositionORIGINAL CODE: 0009261PLBE | PLBE | EP | |
| Information on the status of an ep patent application or granted ep patentGrantedSTATUS: NO OPPOSITION FILED WITHIN TIME LIMITSTAA | STAA | EP | |
| Fr: translation filedET | ET | EP | |
| Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents actLapsedNLV1 | NLV1 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Corresponds to:REF | REF | EP | |
| Designated contracting statesAK | AK | EP | |
| European patent grantedGrantedFG4D | FG4D | GB | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| (expected) grantORIGINAL CODE: 0009210GRAA | GRAA | EP | |
| Grant fee paidORIGINAL CODE: EPIDOSNIGR3GRAS | GRAS | EP | |
| Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOS IGRAGRAH | GRAH | EP | |
| First examination report despatched17Q | 17Q | EP | |
| Designation fees paidDE ES FR GB IT NLAKX | AKX | EP | |
| Request for examination filed17P | 17P | EP | |
| Designated contracting statesAK | AK | EP | |
| Request for extension of the european patentAL;LT;LV;MK;RO;SIAX | AX | EP | |
| Search report despatchedORIGINAL CODE: 0009013PUAL | PUAL | EP | |
| Designated contracting statesAK | AK | EP | |
| Request for extension of the european patentAL;LT;LV;MK;RO;SIAX | AX | EP | |
| Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI | PUAI | EP |
Numbers
- Publication
- 0899104
- Publication, DOCDB
- 0899104
- Publication, EPODOC
- EP0899104
- Application
- 98116010
- Application, DOCDB
- 98116010
- Application, EPODOC
- EP19980116010
Titles3
- German
- Flüssigkeitsausstosskopf und sein Herstellungsverfahren
- English
- A liquid discharge head and a method of manufacture therefor
- French
- Tête d'éjection de liquide et sa méthode de fabrication
Classification
- CPC, 10
- B41J2/1642
- B41J2/14048
- B41J2/1604
- B41J2/1623
- B41J2/1625
- B41J2/1626
- B41J2/1631
- B41J2/1643
- B41J2/1645
- B41J2202/03
- IPC, 3
- B41J2 05
- B41J2 14
- B41J2 16
Designated states2
- Contracting states, 1
- Sweden
- Extension states, 1
- Slovenia