Inkjet printing using protective ink

A method for modifying an input digital image having one or more color channels corresponding to one or more color inks and a protective ink channel corresponding to a substantially clear protective ink, each channel having an (x,y) array of pixel values, to form a modified digital image including c...

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Bibliographische Detailangaben
Hauptverfasser: Couwenhoven, Douglas W, Billow, Steven A, Reem, Richard C
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A method for modifying an input digital image having one or more color channels corresponding to one or more color inks and a protective ink channel corresponding to a substantially clear protective ink, each channel having an (x,y) array of pixel values, to form a modified digital image including computing a first value responsive to corresponding pixel values of the one or more color channels; computing a second value responsive to the corresponding pixel value of the protective ink channel; and modifying the corresponding pixel value of the protective ink channel responsive to the first and second values.