Inkjet printhead with a plurality of vapor bubble generators

Details Inkjet printhead with a plurality of vapor bubble generators Inkjet printhead with a plurality of vapor bubble generators

2008-03-26

2011-10-11

Fuqua, Shawntina (Department: 3742)

Electric heating

Heating devices

Combined with diverse-type art device

C219S469000, C219S471000, C219S474000, C219S243000, C219S486000, C219S470000, C219S472000, C219S501000, C219S499000, C219S497000, C347S011000, C347S057000, C347S020000, C347S054000, C347S056000, C347S060000, C347S012000, C347S010000, C347S014000, C347S015000, C399S069000, C399S067000, C399S329000, C399S330000, C399S335000

Reexamination Certificate

active

08035060

ABSTRACT:
The invention provides for an inkjet printhead having a plurality of micro-electromechanical vapor bubble generators. Each bubble generator includes a nozzle in fluid communication with an ink chamber, and a heater positioned in thermal contact with ink in the chamber. Each generator also includes drive circuitry configured to provide a modulated pulse to the heater to generate a vapor bubble in the ink in said chamber, the pulse comprising a pre-heat series of a predetermined number of pulses separated by a predetermined period, followed by a trigger pulse of a period twice that of said predetermined period.

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