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AssigneeSeiko Epson Corporation
InventorYasuhiko Yoshihisa
Estimating the term…
There are included a control circuit to control sequence of excitation of a stepping motor, a switching circuit to switch electric power to be supplied to the stepping motor based on an instruction from the control circuit, and a stop circuit to stop an operation of the switching circuit in a case where temperature of the switching circuit becomes a specified temperature or higher, and the control circuit controls the switching circuit in a mode where the stop circuit operates before the stepping motor is damaged by heat.
A printing apparatus comprising:
A printing apparatus comprising:
A printing apparatus comprising:
Dependencies are inferred from the claim text.
From the US filing history. Foreign family members aren’t listed.
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Arrangements for controlling dynamo-electric motors rotating step by step: protection against faults, e.g. against overheating or step-out;…
Specific feedback condition or device: thermal condition
Control or regulation of electric motors, electric generators or dynamo-electric converters
Technical subjects covered by former uspc cross-reference art collections [xracs] and digests
Term ended 7 Mar 2026 (estimated)
1. Technical Field of the Invention
The present invention relates to a stepping motor control apparatus, a stepping motor control method and a stepping motor control program product.
2. Description of the Related Art
FIG. 1 is a view showing a structural example of a printing apparatus of an embodiment of the invention;
FIG. 2 is a view showing a structural example of a tube pump of the printing apparatus shown in FIG. 1;
FIG. 3 is a view showing a structural example of the tube pump of the printing apparatus shown in FIG. 1;
Hereinafter, an embodiment of the invention will be described with reference to the drawings.
FIG. 1 is a view showing a structural example of a printing apparatus using a stepping motor control apparatus of an embodiment of the invention. Hereinafter, the embodiment of the invention will be described with reference to FIGS. 1 to 9. FIG. 1 is a perspective view showing the basic structure of a printing apparatus 10 of this embodiment. As shown in FIG. 1, the printing apparatus 10 includes a base 11, and a carriage 12 is constructed to freely reciprocate with respect to the base 11.
The carriage 12 constitutes an ink-jet recording head body 13, and can mount therein a cartridge 13a for black ink and a cartridge 13b for yellow, cyan and magenta. A recording head 15 is provided below the carriage 12 so as to be opposed to a recording sheet 14. A lower end face of the recording head 15 is a nozzle formation face 15a, and can discharge ink.