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US 10,308,021 B2Granted
Print element substrate, printhead, and image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorsHiroyasu Nomura, Nobuyuki Hirayama
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AssigneeCanon Kabushiki Kaisha
InventorsHiroyasu Nomura, Nobuyuki Hirayama
Estimating the term…
A print element substrate that includes a plurality of heaters and a plurality of temperature sensors provided in correspondence with a plurality of nozzles, comprises: a selecting unit that selects one temperature sensor from the plurality of temperature sensors and output a temperature signal; a determining unit that determines a discharge state of the nozzle based on the temperature signal output by the selecting unit; an outputting unit that, based on a determination result output from the determining unit, externally outputs a signal indicating the discharge state of the nozzle corresponding to the selected temperature sensor; and a masking unit that, in accordance with a change in selection of the temperature sensor by the selecting unit, masks the determination result output from the determining unit to the outputting unit during a predetermined time from a timing of the change.
A print element substrate that includes a plurality of heaters and a plurality of temperature sensors provided in correspondence with a plurality of nozzles, the substrate comprising:
A printhead that includes at least one print element substrate, wherein the print element substrate includes:
An image forming apparatus that includes at least one printhead with a print element substrate, wherein the print element substrate includes:
Dependencies are inferred from the claim text.