Abstract: An object of the present disclosure is to perform both heater drive control and fuse drive control without increasing the number of signal lines. One embodiment of the present invention is a printing apparatus including: a print head having a plurality of heaters for heating and ejecting ink and a fuse for retaining information; and a print head control unit configured to control the print head, and the print head control unit has a heater drive control unit configured to control drive of the plurality of heaters and a write pulse generation unit configured to generate a write pulse for performing write for the fuse and data that is generated by the heater drive control unit and the write pulse are transmitted from the print head control unit to the print head via an identical terminal and an identical signal line.

Abstract: An object of the present disclosure is to perform both heater drive control and fuse drive control without increasing the number of signal lines. One embodiment of the present invention is a printing apparatus including: a print head having a plurality of heaters for heating and ejecting ink and a fuse for retaining information; and a print head control unit configured to control the print head, and the print head control unit has a heater drive control unit configured to control drive of the plurality of heaters and a write pulse generation unit configured to generate a write pulse for performing write for the fuse and data that is generated by the heater drive control unit and the write pulse are transmitted from the print head control unit to the print head via an identical terminal and an identical signal line.

Abstract: An element substrate is provided with a fuse memory configured to store information in response to having a voltage applied thereto, a first switch configured to switch whether or not to energize the fuse memory, a resistance element, a second switch configured to switch whether or not to energize the resistance element, a first node connected to the fuse memory and the resistance element, and a second node configured to supply power to the first node from outside. Regarding the element substrate, electric charge that remains at the first node is discharged by allowing, before allowing the first switch to energize the fuse memory, the second switch to energize the resistance element from the first node.

Abstract: The abstract of the disclosure is a thermal-ultrafine bubble generation unit which is configured to generate thermal-ultrafine bubbles by bringing a liquid into film boiling. More specifically, the thermal-ultrafine bubble generation unit in the disclosure includes a temperature detection element that is configured to detect generation of the film boiling.

Abstract: According to an embodiment of this invention, the following data transfer between a printhead and a printing apparatus is performed. That is, a priority is set for each of a plurality of data to transfer the plurality of data. Print timings of the printhead are generated in accordance with a relative moving speed between the printhead and a print medium, and the print resolution of the printhead. Data to be transferred to the printhead in an interval between the generated print timing and the next print timing following the print timing are selected from the plurality of data based on the interval, the data length of each of the plurality of data, and the set priorities. The selected data are transferred to the printhead.

Abstract: According to an embodiment of this invention, the following data transfer between a printhead and a printing apparatus is performed. That is, a priority is set for each of a plurality of data to transfer the plurality of data. Print timings of the printhead are generated in accordance with a relative moving speed between the printhead and a print medium, and the print resolution of the printhead. Data to be transferred to the printhead in an interval between the generated print timing and the next print timing following the print timing are selected from the plurality of data based on the interval, the data length of each of the plurality of data, and the set priorities. The selected data are transferred to the printhead.