EP 0237787 A3 19880113 - METHOD AND APPARATUS FOR MAINTAINING A SUBSTANTIALLY CONSTANT INK PRESSURE AT A REMOTELY FED INK PRINTHEAD
Title (en)
METHOD AND APPARATUS FOR MAINTAINING A SUBSTANTIALLY CONSTANT INK PRESSURE AT A REMOTELY FED INK PRINTHEAD
Publication
Application
Priority
US 84259386 A 19860320
Abstract (en)
[origin: EP0237787A2] Pressure surging and variations in ink supply in a remote source reservoir ink jet printing system are eliminated in a unique method and implementing apparatus employing a simple elastically suspended reservoir. The weight of the reservoir is kept negligibly small in relation to the weight of the ink. The elastic constant is selected so that the reservoir rises as the ink supply diminishes maintaining the surface of the ink at a relatively constant height with respect to the printhead, independantly of the depth of the ink in the reservoir. This maintains the hydrostatic pressure head (slightly negative in this application) relatively constant in relation to the printhead which is supplied by the reservoir. Any elastic system operating in tension, compression, bending, torsion and so on is contemplated.
IPC 1-7
IPC 8 full level
B41J 2/175 (2006.01)
CPC (source: EP)
B41J 2/175 (2013.01)
Citation (search report)
- [A] EP 0110499 A2 19840613 - HEWLETT PACKARD CO [US]
- [A] DE 3204661 A1 19830818 - SIEMENS AG [DE]
- [AD] US 4462037 A 19840724 - BANGS RICHARD G [US], et al
- [A] DE 2424831 B2 19760325
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0237787 A2 19870923; EP 0237787 A3 19880113; JP S62231760 A 19871012
DOCDB simple family (application)
EP 87101964 A 19870212; JP 6768187 A 19870320