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1. WO2020065087 - METHOD AND SYSTEM FOR THE DETECTION AND CORRECTION OF PRINTING DEFECTS OF A PRINTING DEVICE

Publication Number WO/2020/065087
Publication Date 02.04.2020
International Application No. PCT/EP2019/076372
International Filing Date 30.09.2019
IPC
B41J 2/21 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
2Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
005characterised by bringing liquid or particles selectively into contact with a printing material
01Ink jet
21for multi-colour printing
H04N 1/407 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
1Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
40Picture signal circuits
407Control or modification of tonal gradation or of extreme levels, e.g. background level
CPC
B41J 2/2139
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, ; e.g. INK-JET PRINTERS, THERMAL PRINTERS; , i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
2Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
005characterised by bringing liquid or particles selectively into contact with a printing material
01Ink jet
21for multi-colour printing
2132Print quality control characterised by dot disposition, e.g. for reducing white stripes or banding
2139Compensation for malfunctioning nozzles creating dot place or dot size errors
B41J 2/2142
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, ; e.g. INK-JET PRINTERS, THERMAL PRINTERS; , i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
2Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
005characterised by bringing liquid or particles selectively into contact with a printing material
01Ink jet
21for multi-colour printing
2132Print quality control characterised by dot disposition, e.g. for reducing white stripes or banding
2142Detection of malfunctioning nozzles
B41J 2/2146
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, ; e.g. INK-JET PRINTERS, THERMAL PRINTERS; , i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
2Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
005characterised by bringing liquid or particles selectively into contact with a printing material
01Ink jet
21for multi-colour printing
2132Print quality control characterised by dot disposition, e.g. for reducing white stripes or banding
2146for line print heads
H04N 1/4078
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
1Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
40Picture signal circuits
407Control or modification of tonal gradation or of extreme levels, e.g. background level
4076dependent on references outside the picture
4078using gradational references, e.g. grey-scale test pattern analysis
Applicants
  • NEOS S.R.L. [IT]/[IT]
Inventors
  • PALUMBO, Vincenzo
Agents
  • ANTONUCCI, Emanuele
Priority Data
18425076.928.09.2018EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND SYSTEM FOR THE DETECTION AND CORRECTION OF PRINTING DEFECTS OF A PRINTING DEVICE
(FR) PROCÉDÉ ET SYSTÈME DE DÉTECTION ET DE CORRECTION DE DÉFAUTS D'IMPRESSION D'UN DISPOSITIF D'IMPRESSION
Abstract
(EN)
Method and respective device for the detection and correction of printing defects of a digital printing device (A) comprising the following steps: - arranging a digital printing device (A) equipped with one or more print heads (H) with a plurality of dispensing nozzles (N); - continuously controlling said plurality of dispensing nozzles (N) to realize a real printing pattern (RPP) on a printing medium (P); - continuously acquiring the real printing pattern (RPP); - detecting at least one printing defect (DF); - elaborating, onboard a control unit of the digital printing device (A), at least one compensation scheme to mask a detected printing defect (DF,); - applying said compensation device during the realization of said real printing pattern (RPP).
(FR)
La présente invention concerne un procédé et un dispositif respectif de détection et de correction de défauts d'impression d'un dispositif d'impression numérique (A) comprenant les étapes suivantes consistant : - à agencer un dispositif d'impression numérique (A) équipé d'une ou de plusieurs têtes d'impression (H) présentant une pluralité de buses de distribution (N) ; - à commander en continu ladite pluralité de buses de distribution (N) en vue de réaliser un motif d'impression réel (RPP) sur un support d'impression (P) ; - à acquérir en continu le motif d'impression réel (RPP) ; - à détecter au moins un défaut d'impression (DF) ; - à élaborer, à bord d'une unité de commande du dispositif d'impression numérique (A), au moins un schéma de compensation en vue de masquer un défaut d'impression détecté (DF) ; - à appliquer ledit dispositif de compensation pendant la réalisation dudit motif d'impression réel (RPP).
Also published as
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