Incremental printing of symbolic information – Ink jet – Controller
Patent
1993-04-30
1996-05-21
Barlow, Jr., John E.
Incremental printing of symbolic information
Ink jet
Controller
347 37, B41J 2938
Patent
active
055194150
ABSTRACT:
In bidirectional inkjet printing, in certain situations the printer uses relatively large amounts of ink--in relation to the amount of liquid carrier that can be absorbed by or evaporated from the printing medium that is in use. For example, this occurs when a printer does double-ink-drop printing on transparency stock, particularly for particular colors (e.g., cyan). In such situations an undesirable, unesthetic mottling effect can arise. It has been discovered that, in this case, print quality can be improved by deliberately selecting a relatively large amount of jitter or random variation in firing time within each pixel column--actually the equivalent of about one eighth of a column width.
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patent: 5258773 (1993-11-01), Arakawa et al.
IBM; Tracking Carrier Position for Printing in Bidirectional Printers; IBM Technical Disclosure Bulletin, vol. 31, No. 9; Feb. 1989; 265-267.
Barlow Jr. John E.
Hewlett--Packard Company
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