EP 0224937 B1 19911121 - THERMAL INK JET PRINT HEAD ASSEMBLY
Title (en)
THERMAL INK JET PRINT HEAD ASSEMBLY
Publication
Application
Priority
US 80629485 A 19851206
Abstract (en)
[origin: EP0224937A2] In a thin film resistor substrate (32) for a thermal ink jet printhead, there is provided an elongated ink feed slot (16) for supplying ink to a plurality of heater resistors (36,38) on the substrate. Ink flows from this slot (16) vertically through the substrate (32) and then laterally along predetermined ink flow paths in an orifice plate (44) and barrier layer members to ink reservoirs (46,48) above the heater resistors (36,38). In this manner ink flow pressure drops to all of the reservoirs (46, 48) are equal and thereby enhance ink pressure control for all of the reservoirs (46, 48).
IPC 1-7
IPC 8 full level
B41J 2/015 (2006.01); B41J 2/05 (2006.01); B41J 2/14 (2006.01); B41J 2/16 (2006.01); B41J 2/175 (2006.01)
CPC (source: EP)
B41J 2/14024 (2013.01); B41J 2/14145 (2013.01); B41J 2/17513 (2013.01); B41J 2002/14387 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0224937 A2 19870610; EP 0224937 A3 19881117; EP 0224937 B1 19911121; CA 1278949 C 19910115; DE 3682569 D1 19920102; JP H0773915 B2 19950809; JP S62134268 A 19870617; SG 77492 G 19921002
DOCDB simple family (application)
EP 86116956 A 19861205; CA 524688 A 19861205; DE 3682569 T 19861205; JP 29138486 A 19861205; SG 77492 A 19920730