PRINTING SYSTEM AND DEFECTIVE NOZZLE DETECTING METHOD

To provide a printing system and a defective nozzle detecting method which can efficiently detect a defective nozzle out of a number of nozzles.SOLUTION: The printing system comprises a printing part 205 and a photographing part 310, which is further provided with: a defect detecting part 322 that d...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: IKEDA YUSAKU, SHONO KEIJI, KIYOHARA OSAMU
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide a printing system and a defective nozzle detecting method which can efficiently detect a defective nozzle out of a number of nozzles.SOLUTION: The printing system comprises a printing part 205 and a photographing part 310, which is further provided with: a defect detecting part 322 that detects defects included in a photographed image; a defective nozzle position candidate extracting part 323 that extracts N-position candidates as candidates for positions of defective nozzles on the basis of positions of the defects; a first correcting part 120 that performs processing for correcting the defects; and a defective nozzle identifying part 325 that identifies the defective nozzles. The first correcting part 120 performs the processing for correcting the defects, while sequentially setting only the N-nozzles corresponding to the N-position candidates as nozzles to be corrected, one by one. The defective nozzle identifying part 325 identifies the defective nozzles, on the basis of the positions of the defects detected by the defect detecting part 322 on the basis of a corrected image.SELECTED DRAWING: Figure 9 【課題】多数のノズルから効率的に欠陥ノズルを検出することのできる印刷システムおよび欠陥ノズル検出方法を提供する。【解決手段】印刷部205と撮像部310とを備える印刷システムに、撮像画像に含まれる欠陥を検出する欠陥検出部322と欠陥の位置に基づいて欠陥ノズルの位置の候補としてN個の位置候補を抽出する欠陥ノズル位置候補抽出部323と欠陥補正処理を行う第1の補正部120と欠陥ノズルを特定する欠陥ノズル特定部325とが設けられる。第1の補正部120は、N個の位置候補に対応するN個のノズルのみを1つずつ順次に補正対象ノズルに設定して欠陥補正処理を行う。欠陥ノズル特定部325は、補正画像に基づき欠陥検出部322によって検出された欠陥の位置に基づいて、欠陥ノズルを特定する。【選択図】図9