US PATENT SUBCLASS 347 / 144
.~.~.~.~ Time based modulation (e.g., pulse width, duty cycle, rise time)

Current as of: June, 1999
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347 /   HD   INCREMENTAL PRINTING OF SYMBOLIC INFORMATION

111  DF  ELECTRIC MARKING APPARATUS OR PROCESSES {3}
112  DF  .~ Electrostatic {8}
141  DF  .~.~ Specific electrostatic head {7}
142  DF  .~.~.~ Signal switching {3}
144.~.~.~.~ Time based modulation (e.g., pulse width, duty cycle, rise time)

DEFINITION

Classification: 347/144

Time based modulation (e.g., pulse width, duty cycle, rise time):

(under subclass 142) Subject matter comprising means for changing a duration or a transition time of energized pulses (e.g., pulse width, duty cycle, rise time).