EP 3539784 B1 20210512 - INKJET RECORDING APPARATUS, DEVIATION DETECTION APPARATUS, AND DEVIATION DETECTION METHOD
Title (en)
INKJET RECORDING APPARATUS, DEVIATION DETECTION APPARATUS, AND DEVIATION DETECTION METHOD
Title (de)
TINTENSTRAHLAUFZEICHNUNGSVORRICHTUNG, ABWEICHUNGSDETEKTIONSVORRICHTUNG UND ABWEICHUNGSDETEKTIONSVERFAHREN
Title (fr)
APPAREIL D'ENREGISTREMENT À JET D'ENCRE, APPAREIL DE DÉTECTION DE DÉVIATION ET PROCÉDÉ DE DÉTECTION DE DÉVIATION
Publication
Application
Priority
JP 2018046108 A 20180314
Abstract (en)
[origin: EP3539784A1] An inkjet recording apparatus (1) includes an ink ejector (21), an ejection control unit (50) and a detection unit (50). The ink ejector includes nozzle lines (N1, N2). In each nozzle line, nozzles (211) are arranged in a nozzle arrangement direction. The ejection control unit (50) causes a plurality of nozzle groups (NG) each including first, second and third nozzles (211a, 211b, 211c) having a predetermined positional relationship to form a detection pattern (P). The detection pattern has first and second density patterns (PI, P2). In the first density pattern, first unit patterns (U1) are arranged by being formed by the first and second nozzles of the respective nozzle groups. In the second density pattern, second unit patterns (U2) are arranged by being formed by the second and third nozzles of the respective nozzle groups. The detection unit detects deviation of the nozzle arrangement direction from a reference direction based on representative values of densities in density distributions of the first and second density patterns.
IPC 8 full level
B41J 2/21 (2006.01); B41J 2/155 (2006.01); B41J 25/00 (2006.01)
CPC (source: CN EP)
B41J 2/04505 (2013.01 - CN); B41J 2/1433 (2013.01 - CN); B41J 2/155 (2013.01 - EP); B41J 2/2135 (2013.01 - EP); B41J 2/2146 (2013.01 - EP); B41J 25/003 (2013.01 - EP); B41J 2029/3935 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3539784 A1 20190918; EP 3539784 B1 20210512; CN 110271286 A 20190924; JP 2019155747 A 20190919; JP 7087487 B2 20220621
DOCDB simple family (application)
EP 19160592 A 20190304; CN 201910179824 A 20190311; JP 2018046108 A 20180314