INKJET PRINTING APPARATUS AND CONTROL METHOD THEREFOR

INKJET PRINTING APPARATUS AND CONTROL METHOD THEREFOR

An inkjet printing apparatus obtains data of a second image by correcting, using shading data, signal values of pixels in an image of a read test pattern so that a signal value of a pixel lower than a value of the shading data becomes a value corresponding to a lowest luminance; specifies an area of...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Nagoshi, Shigeyasu, Murase, Takeshi, Murayama, Yoshiaki, Ishii, Daisuke, Kubozono, Kenji, Tada, Satoshi
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
HANDLING RECORD CARRIERS
PHYSICS
PRESENTATION OF DATA
RECOGNITION OF DATA
RECORD CARRIERS
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Beschreibung
Zusammenfassung:An inkjet printing apparatus obtains data of a second image by correcting, using shading data, signal values of pixels in an image of a read test pattern so that a signal value of a pixel lower than a value of the shading data becomes a value corresponding to a lowest luminance; specifies an area of a pattern of each of the plurality of inks in the image of the test pattern using the data of a first image and the data of the second image; and calculates a position deviation amount of a printhead based on a position of the pattern of the specified area.