SG11201807298VA - Ink delivery system for supplying ink to multiple printheads at constant pressure - Google Patents

Abstract

INKDELVE}:': VIOLJLE nterrn ediarf ink. Resericiir () INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 09 November 2017 (09.11.2017) WIP0 I PCT omit IIl Hot 0 Oil Nall Immo oimIE (10) International Publication Number WO 2017/190934 Al (51) International Patent Classification: B41J 2/175 (2006.01) (21) International Application Number: PCT/EP2017/058893 (22) International Filing Date: 12 April 2017 (12.04.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/330,785 02 May 2016 (02.05.2016) US (71) Applicant: MEMJET TECHNOLOGY LIMITED [IE/IE]; 61/62 FITZWILLIAM LANE, DUBLIN, 2 (IE). (72) Inventors: THELANDER, Jason; 6-8 Lyon Park Road, North Ryde, New South Wales 2113 (AU). PROFACA, Mark; 6-8 Lyon Park Road, North Ryde, New South Wales 2113 (AU). WHEATLEY, Stuart; 6-8 Lyon Park Road, North Ryde, New South Wales 2113 (AU). MEYER, Craig; 6-8 Lyon Park Road, North Rude, New South Wales 2113 (AU). (81) Designated States (unless otherwise indicated, for every kind of national protection available): 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. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (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, (54) Title: INK DELIVERY SYSTEM FOR SUPPLYING INK TO MULTIPLE PRINTHEADS AT CONSTANT PRESSURE BULK INK .SU Pik'? TANK 56 (57) : An ink delivery system for an inkjet printer includes: a positive ink line having a controlled positive ink pressure; a negative ink line having a controlled negative ink pressure; one or more print modules interconnected between the positive ink line and the negative ink line via respective inlet and outlet lines. Each print module includes: a printhead; a control valve positioned at an inlet port of the print module for controlling an ink pressure in the printhead; an ink pressure sensor for sensing an ink pressure in the print module; and a controller for receiving feedback from the pressure sensor and controlling the control valve. During printing, the ink pressure sensor, the controller and the control valve cooperate to control a backpressure in the printhead within a predetermined backpressure range. [Continued on next page] WO 2017/190934 Al MIDEDIMOMMIDIRMEMOMOMMEHENHEMOVOIMIE TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: — with international search report (Art. 21(3))