Facsimile and static presentation processing – Static presentation processing – Plotter
Reexamination Certificate
2011-05-17
2011-05-17
Poon, King Y (Department: 2625)
Facsimile and static presentation processing
Static presentation processing
Plotter
C358S001120, C358S001500, C347S247000, C347S010000, C347S032000, C347S057000, C347S079000
Reexamination Certificate
active
07944582
ABSTRACT:
A carriage drive control method capable of detecting the acceleration of a carriage at low cost, improving external disturbance suppression of the carriage, and thus improving image quality. This method is applied to a printing apparatus which prints by relatively moving on a printing medium a carriage to which a printhead is mounted. In the printing apparatus, the moving velocity of the carriage is detected, the acceleration of the carriage is detected on the basis of outputs from first and second strain gauges which are respectively attached on the two sides of a fixing portion for fixing the carriage on a belt for transmitting a drive force from a carriage motor to the carriage, the carriage velocity is compensated on the basis of the carriage acceleration detected for the detected moving velocity of the carriage, and driving of the carriage motor is feedback-controlled on the basis of the compensated carriage velocity.
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Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Poon King Y
Sarpong Akwasi M
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