EP 0772524 A1 19970514 - BLOCK FAULT TOLERANCE IN INTEGRATED PRINTING HEADS
Title (en)
BLOCK FAULT TOLERANCE IN INTEGRATED PRINTING HEADS
Title (de)
BLOCKFEHLERTOLERANZ IN INTEGRIERTEN DRUCKKÖPFEN
Title (fr)
TOLERANCE AUX DEFAUTS DE BLOCS DANS LES TETES D'IMPRESSION INTEGREES
Publication
Application
Priority
- AU PN232595 A 19950412
- US 9604896 W 19960410
Abstract (en)
[origin: WO9632264A1] Single faults in shift registers incorporated on monolithic printing heads can render inoperable large numbers of printing actuators, as data will either be stuck high or stuck low for subsequent shift register and actuator stages. This can reduce the effectiveness of other means of fault tolerance, and increase the device sensitivity to faults in individual, normally redundant, actuators. A printing head is disclosed which provides block fault tolerance in the shift registers, limiting the effect of shift register fabrication faults to small numbers of redundant actuators. This allows a high probability of defect correction by other forms of fault tolerance integrated on the chip, thereby increasing overall device yield.
IPC 1-7
IPC 8 full level
B41J 2/04 (2006.01); B41J 2/05 (2006.01); B41J 2/14 (2006.01)
CPC (source: EP)
B41J 2/04541 (2013.01); B41J 2/04543 (2013.01); B41J 2/0458 (2013.01); B41J 2/14451 (2013.01)
Citation (search report)
See references of WO 9632264A1
Designated contracting state (EPC)
DE GB
DOCDB simple family (publication)
WO 9632264 A1 19961017; AU PN232595 A0 19950504; EP 0772524 A1 19970514; JP H10501493 A 19980210
DOCDB simple family (application)
US 9604896 W 19960410; AU PN232595 A 19950412; EP 96911670 A 19960410; JP 53112796 A 19960410