Print element substrate and inkjet printing head
AssigneeCanon Kabushiki Kaisha
InventorsKAZUNARI ISHIZUKA, HIDENORI YAMATO
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Abstract
To increase the virtual length of a nozzle array while maintaining a high operating frequency, provided is a print element substrate having an energy generation element array including a plurality of energy generation elements each configured to apply energy to liquid in a corresponding pressure chamber and a pad array including a plurality of pads for inputting, from outside, a plurality of signals for driving the plurality of energy generation elements. The extension direction of the pad array has a component in the same direction as the extension direction of the energy generation element array.
Claims18
A print element substrate comprising:
- an energy generation element array including a plurality of energy generation elements each configured to apply energy to liquid in a corresponding pressure chamber;
- a pad array including a plurality of pads used for inputting, from outside, a plurality of signals for driving the plurality of energy generation elements;
- a drive element array including a plurality of drive elements each configured to drive a corresponding one of the energy generation elements;
- a logical circuit array including a plurality of logical circuits each configured to enable a corresponding one of the drive elements based at least on data inputted from a shift register;
- and
- the shift register configured to, based on a clock signal inputted from outside, shift a serial signal inputted from outside and used for driving the plurality of energy generation elements and then hold the serial signal, wherein an extension direction of the pad array has a component in a same direction as an extension direction of the energy generation element array, the plurality of pads include at least a pad for inputting the serial signal from outside and a pad for inputting the clock signal from outside, an extension direction of the drive element array, an extension direction of the logical circuit array, and an extension direction of the shift register have a component in a same direction as the extension direction of the energy generation element array, and the pad array is disposed at a position different from the energy generation element array, the drive element array, the logical circuit array, and the shift register in a direction intersecting with the extension direction of the energy generation element array.
An inkjet printing head including a plate and a print element substrate provided on the plate, the print element substrate comprising:
- an energy generation element array including a plurality of energy generation elements each configured to apply energy to liquid in a corresponding pressure chamber;
- a pad array including a plurality of pads for inputting, from outside, a plurality of signals for driving the plurality of energy generation elements;
- a drive element array including a plurality of drive elements each configured to drive a corresponding one of the energy generation elements;
- a logical circuit array including a plurality of logical circuits each configured to enable a corresponding one of the drive elements based at least on data inputted from a shift register;
- and
- the shift register configured to, based on a clock signal inputted from outside, shift a serial signal inputted from outside and used for driving the plurality of energy generation elements and then hold the serial signal, wherein an extension direction of the pad array has a component in a same direction as an extension direction of the energy generation element array, the plurality of pads include at least a pad for inputting the serial signal from outside and a pad for inputting the clock signal from outside, an extension direction of the drive element array, an extension direction of the logical circuit array, and an extension direction of the shift register have a component in a same direction as the extension direction of the energy generation element array, and the pad array is disposed at a position different from the energy generation element array, the drive element array, the logical circuit array, and the shift register in a direction intersecting with the extension direction of the energy generation element array.
Dependencies are inferred from the claim text.