Ink-jet printing method and apparatus for printing with inks of different densities
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United States of America Patent
Stats
-
Apr 8, 2003
Issued Date -
N/A
app pub date -
May 29, 2001
filing date -
Apr 23, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
It is checked whether an ink used in a printhead has a high density. The type of a printing medium used for a print operation is also identified. An image is printed by scanning the printhead once or a plurality of times. When a print operation is to be performed by using a thick ink, an image is printed by using mask data and the driving frequency of the head which are set for the thick ink. When a print operation is to be performed by using a thin ink, an image is printed by using mask data and the driving frequency of the head which are set for the thin ink and the type of printing medium used for the print operation. Codes of the respective color data of print data are determined in accordance with the types of inks used for a print operation, and an image is printed by printing a plurality of dots or dots in an overlapping state by the multi-pass method.
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