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US 2002/0118234 A1Published application
Apparatus and method for ink jet printhead voltage fault protection
AssigneeLemark International, Inc.
InventorsMark Kevin DeMoor, Todd Alan Dutton
Life of this patent
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Abstract
An ink jet printhead voltage fault protection apparatus includes a power supply and a latching circuit. The latching circuit disables a printhead voltage applied to the printhead by the power supply upon detection of a fault condition associated with the printhead voltage such that the printhead voltage remains disabled until the power supply goes through a power-on reset sequence.
Claims23
An ink jet printhead voltage fault protection apparatus, comprising:
- a power supply;
- and
- a latching circuit configured to disable a printhead voltage applied to the printhead by said power supply upon detection of a fault condition associated with said printhead voltage such that said printhead voltage remains disabled until said power supply goes through a power-on reset sequence.
A method of protecting an ink jet printhead from a fault condition, said method comprising the steps of:
- providing a power supply;
- applying a printhead voltage from said power supply to the ink jet printhead;
- detecting a fault condition associated with said printhead voltage;
- and
- disabling said printhead voltage dependent upon said detecting step such that said printhead voltage remains disabled until said power supply goes through a power-on reset sequence.
2 more elements
Dependencies are inferred from the claim text.