Incremental printing of symbolic information – Ink jet – Ejector mechanism
Patent
1993-03-02
1996-11-05
Barlow, Jr., John E.
Incremental printing of symbolic information
Ink jet
Ejector mechanism
347 2, 347 35, B41J 2165
Patent
active
055722423
ABSTRACT:
A highly reliable ink-jet printer or printing mechanism capable of consistent ink discharge in an on-demand type ink-jet printer. The printing mechanism is equipped with an ink-jet head having a plurality of ink nozzles that discharge ink drops and pressure generating elements corresponding to the nozzles, for applying pressure to the ink therein. A timer measures a preselected time period and a recovery processor controls recovery operations for each nozzle. The recovery operations are executed at prescribed time intervals during non-operation of the ink-jet head based on timer output. The recovery processor performs recovery processing when the power source is powered on. Further, an automatic power disconnection is performed when the number of consecutive recovery performed in response to the output of the timer reaches a prescribed maximum number.
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Fujii Masahiro
Hama Susumu
Minowa Masahiro
Takizawa Hiroshi
Barlow Jr. John E.
Janofsky Eric B.
Seiko Epson Corporation
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