Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2007-07-24
2007-07-24
Hsieh, Shih-Wen (Department: 2861)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
C347S023000, C347S029000, C347S033000
Reexamination Certificate
active
10732245
ABSTRACT:
An automatic maintenance-performing method to determine whether a first and a second power supply are operational, and performing a periodic maintenance operation at a predetermined time by supplying an electric power to the second power supply when the first power supply is in an ‘on’ state and the second power supply is in an ‘off’ state, and at the predetermined period without supplying the electric power to the second power supply when both the first and second power supplies are in the ‘on’ state, as a result of the decision. Further, an automatic maintenance-performing apparatus having an automatic maintenance executing unit including a power supplying part having a first power supply to supply an electric power to the control unit and connected to a power plug, and a second power supply to supply the electric power to at least the maintenance unit and connected to the power plug through a power switch, and a maintenance executing part counting time and performing the maintenance operation when the counted time surpasses the predetermined time period. The apparatus and method is provided to an image forming device to prevent ink ejection nozzles from being dried and choked and thereby prevents deterioration of the performance of print heads when the image forming device is on standby or not in use over a period of time, by automatically performing the periodic maintenance operation.
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Hsieh Shih-Wen
Samsung Electronics Co,. Ltd.
Staas & Halsey , LLP
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