Density modulated auto-duplexing
AssigneeHewlett-Packard Development Company, L.P.
InventorsWei Lit Teoh, Hua Zhou, Wee Hien Tok, Hwee Boon Tan, Kok Chai Chong
Life of this patent
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Abstract
A method for fluid-density modulated auto-duplexing is disclosed. This method determines when a final swath of a printing operation on a surface of a media occurs within a predefined distal end portion of the media. An estimated media dry time after the final swath in the predefined distal end portion is determined to be greater than a predetermined time. The estimated dry time is capped to a predetermined minimum media dry time and a course of action for a feed mechanism is selected to reduce curling and cockling of the media. Furthermore, a non-transitory computer readable medium and a printer having fluid-density modulated auto-duplexing are also disclosed.
Claims15
A method for fluid-density modulated auto-duplexing, comprising:
- determining a set of media wetness values based on a densitometer reading to calculate an estimated media dry time for each swath of a printhead onto a surface of a media;
- determining a media wetness trigger value based on the estimated media dry time greater than a predetermined threshold for a swath of the printhead nozzle within a predefined distal end portion of the media;
- and
- determining a corrective course of action for a printer mechanism sequencing based on at least the media wetness trigger value to allow the media to be printed on an opposite surface.
A non-transitory computer readable medium (CRM) comprising instructions for fluid-density modulated auto-duplexing that when executed on a processor cause the processor to:
- determine when a final swath of a printing operation on a surface of a media occurs within a predefined distal end portion of the media;
- determine that an estimated media dry time after the final swath in the predefined distal end portion is greater than a predetermined time and cap the estimated dry time to a predetermined minimum media dry time;
- and
- select a course of action for a feed mechanism to reduce curling and cockling of the media.
A printer having fluid-density modulated auto-duplexing, comprising:
- a printhead;
- a feed mechanism coupled to the printhead and a duplexer;
- a processor coupled to the printhead and the feed mechanism;
- and
- a memory coupled to the processor and including instructions to cause the processor to control the printhead and the feed mechanism to print in swaths on a surface of a media, including:
- a densitometer module to determine media wetness and an estimated media dry time of a last swath at a distal end portion of the media;
- and
- a sequence correction module to determine that the last swath is within the predefined distal end portion of the media, that the media wetness is greater than a trigger value, and to select a course of action for the feed mechanism to reduce curling and cockling of the media.
Dependencies are inferred from the claim text.