EP 0143213 B1 19870819 - AUTOMATIC DEVICE FOR VENTILATING UNDER PRESSURE THE INK SUPPLY RESERVOIR OF A PRINTER
Title (en)
AUTOMATIC DEVICE FOR VENTILATING UNDER PRESSURE THE INK SUPPLY RESERVOIR OF A PRINTER
Publication
Application
Priority
DE 3335663 A 19830930
Abstract (en)
[origin: EP0143213A1] 1. A device for the pressurisation of one or more ink supply tanks which travel with a mobile piezo-nozzle printing head of an ink printer, wherein each ink tank (10 ... 13) consists of a rigid container which is divided by a flexible membrane (14) into an ink chamber and an air chamber, characterised by the combination of the following features : a) the device operates automatically and with error control ; b) the air chamber of each ink tank (10 ... 13) can be connected by a flexible hose (15 ... 18), through a respective magnetic valve (19 ... 22), on the one hand, to the atmosphere and, on the other hand, to a compressed air container (23) ; c) the magnetic winding of each magnetic valve (19 ... 22) is connected by a driver circuit, and, if necessary, a preliminary amplifier, to the output of an ink droplet sensor which, when an ink droplet fails to appear, emits a signal to connect the air chamber of the respective ink tank (10 ... 13) to the compressed air container (23).
IPC 1-7
IPC 8 full level
B41J 2/21 (2006.01); B41J 27/00 (2006.01)
CPC (source: EP)
B41J 2/2103 (2013.01); B41J 27/00 (2013.01)
Designated contracting state (EPC)
CH DE FR GB IT LI NL
DOCDB simple family (publication)
EP 0143213 A1 19850605; EP 0143213 B1 19870819; DE 3335663 A1 19850418; DE 3465439 D1 19870924
DOCDB simple family (application)
EP 84110463 A 19840903; DE 3335663 A 19830930; DE 3465439 T 19840903