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1. (WO2017129933) DROPLET DEPOSITION HEAD
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2017/129933 International Application No.: PCT/GB2016/054036
Publication Date: 03.08.2017 International Filing Date: 22.12.2016
IPC:
B41J 2/045 (2006.01) ,B41J 2/16 (2006.01) ,B41J 2/14 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
41
PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
J
TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
2
Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
005
characterised by bringing liquid or particles selectively into contact with a printing material
01
Ink jet
015
characterised by the jet generation process
04
generating single droplets or particles on demand
045
by pressure, e.g. electromechanical transducers
B PERFORMING OPERATIONS; TRANSPORTING
41
PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
J
TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
2
Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
005
characterised by bringing liquid or particles selectively into contact with a printing material
01
Ink jet
135
Nozzles
16
Production of nozzles
B PERFORMING OPERATIONS; TRANSPORTING
41
PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
J
TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
2
Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
005
characterised by bringing liquid or particles selectively into contact with a printing material
01
Ink jet
135
Nozzles
14
Structure thereof
Applicants:
XAAR TECHNOLOGY LIMITED [GB/GB]; 316 Science Park Cambridge CB4 0XR, GB
Inventors:
KO, Song-Won; GB
MARDILOVICH, Peter; GB
TATUM, John Philip; GB
CAZACU, Alexandru; GB
Agent:
TLIP LTD; Leeds Innovation Centre 103 Clarendon Road Leeds, Yorkshire LS2 9DF, GB
Priority Data:
62/288,28728.01.2016US
Title (EN) DROPLET DEPOSITION HEAD
(FR) TÊTE DE DÉPÔT DE GOUTTELETTES
Abstract:
(EN) A droplet deposition head having a fluid chamber connected to a droplet ejection nozzle and to a reservoir for the fluid, and a piezoelectric actuator element formed at least in part by a fluid chamber wall having an electrode thereon, which element is displaceable in response to a drive voltage to generate a pressure in the chamber to eject a droplet of fluid from the chamber through the nozzle wherein the electrode is provided with a passivation coating which comprises, at least in part, a laminate comprising an inorganic insulating layer nearest to or contacting the electrode and an organic insulating layer overlying the inorganic insulating layer wherein defects in the insulating layers tend to be misaligned at the interface there between and wherein the inorganic insulating layer has thickness less than or equal to 500 nm and the organic insulating layer has a thickness less than 3 μιη.
(FR) La présente invention concerne une tête de dépôt de gouttelettes comportant une chambre de fluide raccordée à une buse d'éjection de gouttelettes et à un réservoir pour le fluide, et un élément d'actionneur piézoélectrique formé au moins en partie par une paroi de chambre de fluide comportant une électrode sur celle-ci, ledit élément étant déplaçable en réponse à une tension de commande pour générer une pression dans la chambre pour éjecter une gouttelette de fluide depuis la chambre par l'intermédiaire de la buse, l'électrode étant pourvue d'un revêtement de passivation qui comprend, au moins en partie, un stratifié comprenant une couche isolante inorganique à proximité de, ou en contact avec l'électrode et une couche isolante organique recouvrant la couche isolante inorganique, des défauts dans les couches isolantes ayant tendance à être désalignés à l'interface entre celles-ci et la couche isolante inorganique ayant une épaisseur inférieure ou égale à 500 nm et la couche isolante organique ayant une épaisseur inférieure à 3 µm.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
CN108883634US20190030885