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1. (WO1991017052) INK SUPPLY SYSTEM FOR CONTINUOUS INK JET PRINTER
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/017052 International Application No.: PCT/GB1991/000711
Publication Date: 14.11.1991 International Filing Date: 03.05.1991
Chapter 2 Demand Filed: 19.11.1991
IPC:
B41J 2/175 (2006.01) ,B41J 2/18 (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
17
characterised by ink handling
175
Ink supply systems
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
17
characterised by ink handling
18
Ink recirculation systems
Applicants:
DOMINO PRINTING SCIENCES PLC [GB/GB]; Bar Hill Cambridge CB3 8TU, GB (AllExceptUS)
MANNING, Howard, John [GB/GB]; GB (UsOnly)
REED, David [GB/GB]; GB (UsOnly)
Inventors:
MANNING, Howard, John; GB
REED, David; GB
Agent:
GILL JENNINGS & EVERY; 53/64 Chancery Lane London WC2A 1HN, GB
Priority Data:
9009957.303.05.1990GB
Title (EN) INK SUPPLY SYSTEM FOR CONTINUOUS INK JET PRINTER
(FR) SYSTEME D'ALIMENTATION EN ENCRE DANS UNE MACHINE A IMPRIMER A JET D'ENCRE CONTINU
Abstract:
(EN) An ink supply system for a continuous ink jet printer gun body must allow solvent to be added during printing, and known systems are complex, requiring a pair of pumps, the output pressure of at least one of which is critical. Accordingly, to overcome these problems, an ink supply system for such a printer comprises a pump (9) for pressurising ink and air received from a gutter (8) of the printhead to a pressure above that required for ejection of the ink from the gun body (10) and an ink reservoir (1) from which fresh ink may be fed to the pump means (9). The system has first (12) and second (19) chambers and means (13, 14, 15, 25) are provided for maintaining pressurised air above ink in the first chamber (12) and for controlling the pressure of air above ink in the second chamber (19). Means (21) are provided for supplying ink from the second chamber (19) to the printhead.
(FR) Un système d'alimentation en encre pour un canon d'une machine à imprimer à jet d'encre continu doit permettre l'addition de solvant au cours de l'impression. Les systèmes connus sont complexes et nécessitent une paire de pompes, la pression de débit d'au moins d'une de ces pompes étant critique. Ainsi, pour surmonter ces problèmes, un système d'alimentation en encre pour une telle machine comprend une pompe (9) servant à pressuriser de l'encre et de l'air reçus à partir d'une gouttière (8) de la tête imprimante jusqu'à atteindre une pression supérieure à celle requise pour l'éjection de l'encre à partir du canon (10), et un réservoir à encre (1) à partir duquel l'encre renouvelée peut être envoyée à un moyen de pompage (9). Le système a une première (12) et une seconde (19) chambres et des éléments (13, 14, 15, 25) sont fournis pour maintenir de l'air pressurisé au-dessus de l'encre dans la première chambre (12) et pour commander la pression de l'air au-dessus de l'encre dans la seconde chambre (19). Des éléments (21) sont prévus pour envoyer l'encre de la seconde chambre (19) à la tête imprimante.
Designated States: JP, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0522088US5459497JPH05507660