Printing apparatus and method of controlling printing apparatus
AssigneeSeiko Epson Corporation
InventorsShinya Okazaki, Shinichi Yoshie
Life of this patent
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Abstract
A printing apparatus includes: a variable resistance circuit including a plurality of resistors intercoupled and one or more drive elements that feed currents through the respective resistors; an optical sensor coupled to the variable resistance circuit; a shift register that outputs signals to select one or more of the drive elements and to turn on the selected drive elements; and a controller that acquires a detection value of the optical sensor and that controls the shift register based on the detection value.
Claims6
A printing apparatus comprising:
- a variable resistance circuit that includes a plurality of resistors intercoupled and one or more drive elements that feed currents through the respective resistors;
- an optical sensor coupled to the variable resistance circuit;
- a shift register that outputs signals to the variable resistance circuit to select one or more of the drive elements and to turn on the selected drive elements;
- and
- a controller that acquires a detection value of the optical sensor and that controls the shift register based on the detection value.
A method of controlling a printing apparatus, the printing apparatus including a variable resistance circuit that includes a plurality of resistors intercoupled and one or more drive elements that feed currents through the respective resistors, an optical sensor coupled to the variable resistance circuit, and a shift register that outputs signals to variable resistance circuit to select one or more of the drive elements and to turn on the selected drive elements, the method comprising:
- causing a controller in the printing apparatus to acquire a detection value from the optical sensor and to control the shift register based on the detection value.
Dependencies are inferred from the claim text.