EP 0157851 B1 19880107 - A METHOD AND DEVICE FOR PRINTING QUALITY CONTROL
Title (en)
A METHOD AND DEVICE FOR PRINTING QUALITY CONTROL
Publication
Application
Priority
SE 8305478 A 19831005
Abstract (en)
[origin: WO8501476A1] A method and device for checking the printing quality of matrix or liquid jet printers (2). A character (3) is printed in the paper margin and is optically sensed in connection with line shift. The signal pattern from the symbol is compared with a predetermined pattern corresponding to a correct reproduction of the character. An alarm signal is sent if there is a difference between the signal patterns.
IPC 1-7
IPC 8 full level
B41J 3/44 (2006.01); B41J 29/00 (2006.01); B41J 2/30 (2006.01); B41J 29/38 (2006.01); B41J 29/393 (2006.01); B41J 29/46 (2006.01); B41J 35/36 (2006.01)
IPC 8 main group level
B41J (2006.01)
CPC (source: EP)
B41J 29/393 (2013.01)
Designated contracting state (EPC)
CH DE FR GB LI NL
DOCDB simple family (publication)
WO 8501476 A1 19850411; CA 1266710 A 19900313; DE 3468371 D1 19880211; DK 163648 B 19920323; DK 163648 C 19920817; DK 249985 A 19850603; DK 249985 D0 19850603; EP 0157851 A1 19851016; EP 0157851 B1 19880107; ES 536508 A0 19851016; ES 8601018 A1 19851016; FI 81303 B 19900629; FI 81303 C 19901010; FI 851883 A0 19850513; FI 851883 L 19850513; IT 1176886 B 19870818; IT 8423040 A0 19841005; IT 8423040 A1 19860405; JP H0653426 B2 19940720; JP S61500110 A 19860123; SE 439132 B 19850603; SE 8305478 D0 19831005; SE 8305478 L 19850406
DOCDB simple family (application)
SE 8400321 W 19840928; CA 464672 A 19841003; DE 3468371 T 19840928; DK 249985 A 19850603; EP 84903675 A 19840928; ES 536508 A 19841004; FI 851883 A 19850513; IT 2304084 A 19841005; JP 50364884 A 19840928; SE 8305478 A 19831005