EP 0294288 A3 19900613 - DOT MATRIX PRINT HEAD DRIVE METHOD

Title (en)

DOT MATRIX PRINT HEAD DRIVE METHOD

Publication

EP 0294288 A3 19900613 (EN)

Application

EP 88401330 A 19880601

Priority

JP 13773387 A 19870602

Abstract (en)

[origin: EP0294288A2] In a dot matrix print head drive method for controlling head drive signals for driving dot pins in accordance with print pattern signals, a correction factor is set specifically to each dot pin; and the length of time for which the print pattern signals are to remain in effects is varied according to the correction factor, to correct the drive time for each dot pin.

IPC 1-7

B41J 3/10; B41J 7/92

IPC 8 full level

B41J 2/30 (2006.01); B41J 2/51 (2006.01)

CPC (source: EP)

B41J 2/30 (2013.01)

Citation (search report)

[A] DE 2844468 A1 19790503 - GEN ELECTRIC
[A] EP 0215141 A1 19870325 - IBM DEUTSCHLAND [DE], et al
[A] EP 0183095 A2 19860604 - IBM [US]

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 0294288 A2 19881207; EP 0294288 A3 19900613; EP 0294288 B1 19930915; DE 3884056 D1 19931021; DE 3884056 T2 19940217; JP 2520909 B2 19960731; JP S63302060 A 19881208

DOCDB simple family (application)

EP 88401330 A 19880601; DE 3884056 T 19880601; JP 13773387 A 19870602