Spot size modulation using multiple pulse resonance drop...

Details Spot size modulation using multiple pulse resonance drop... Spot size modulation using multiple pulse resonance drop...

B - Operations, Transporting

41

J

101/96.0208

B41J 2/21 (2006.01)

Patent

CA 1204337

SPOT SIZE MODULATION USING MULTIPLE PULSE RESONANCE DROP EJECTION Abstract of the Disclosure An ink jet drop-on-demand printing system comprising an ink jet print head having an ink cavity supplied with a suitable ink. An electromechanical transducer is mounted in mechanical communication with the ink cavity, and a source of electrical signals is provided to selectively actuate the transducer to produce an ink drop of a selected size. To produce ink drops of a selected size the source of electrical signals produces one or more electrical drive signals each separated by a fixed time delay which is short with respect to the drop- on-demand drop production rate. Each electrical drive signal ejects a predetermined volume of ink and all the volumes of ink merge to form a single drop prior to the time the ink drops reach the print medium for printing.

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