Global Patent Index - EP 1491344 A2

EP 1491344 A2 20041229 - System for supplying a printing apparatus

Title (en)

System for supplying a printing apparatus

Title (de)

Versorgungssystem für Druckvorrichtung

Title (fr)

Système d'alimentation pour appareil d'impression

Publication

EP 1491344 A2 20041229 (EN)

Application

EP 04076854 A 20040625

Priority

IT MI20031305 A 20030626

Abstract (en)

The system has a primary hydraulic circuit (2) with a supply reservoir (21) of ink from which ink is supplied at a constant pressure. A secondary hydraulic circuit (3) has a pressure sensor (32) to sense ink pressure. A regulation electrovalve (31) of the circuit (3) is opened to maintain a depression in ink supply ducts of printing nozzles to an optimal value when ink drops from the nozzles.

A system for supplying a printing apparatus comprising a primary hydraulic circuit (2) that allows ink to flow from a supply reservoir (21) with a substantially constant pressure and a secondary hydraulic circuit (3), positioned between said primary circuit and a printhead (4). The secondary circuit comprises a regulation electrovalve (31), a second pressure sensor (32), an electronic regulation circuit (33) and a hydraulic pumping device (34).

IPC 1-7

B41J 2/175

IPC 8 full level

B41J 2/175 (2006.01)

CPC (source: EP)

B41J 2/175 (2013.01)

Citation (examination)

US 6250747 B1 20010626 - HAUCK MARK [US]

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

EP 1491344 A2 20041229; EP 1491344 A3 20080326; IT MI20031305 A0 20030626; IT MI20031305 A1 20041227

DOCDB simple family (application)

EP 04076854 A 20040625; IT MI20031305 A 20030626