Element substrate
AssigneeCanon Kabushiki Kaisha
InventorsSuguru Taniguchi, Toshio Negishi, Yasuhiro Soeda
Life of this patent
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Abstract
A switch is configured to switch connection between a second terminal to which a data signal is input and a memory control signal of a memory element in accordance with a switching signal included in a data signal. In write to a memory element, the switching signal switches such that the switch connects the second terminal and the memory control signal of the memory element, and a pulse signal for the write to the memory element is input via the second terminal.
Claims7
A printing apparatus comprising a printhead having an element substrate, wherein the element substrate comprises:
- a plurality of groups of print elements;
- a plurality of groups of one-time-programmable memory elements;
- a first terminal to which a clock signal is input;
- a second terminal to which a data signal is input;
- a control data supply unit configured to receive the data signal input from the second terminal in synchronism with the clock signal input from the first terminal and output a selection signal used to select groups and blocks of the one-time-programmable memory elements and the print elements;
- and
- a switch configured to switch connection between the second terminal and a memory control signal of the one-time-programmable memory elements in accordance with a switching signal included in the data signal,
- wherein for a write to the one-time-programmable memory elements, the switching signal switches such that the switch connects the second terminal and the memory control signal of the one-time-programmable memory element, and a pulse signal for the write to the one-time-programmable memory elements is input via the second terminal.
A printhead comprising an element substrate, wherein the element substrate comprises:
- a plurality of groups of print elements;
- a plurality of groups of one-time-programmable memory elements;
- a first terminal to which a clock signal is input;
- a second terminal to which a data signal is input;
- a control data supply unit configured to receive the data signal input from the second terminal in synchronism with the clock signal input from the first terminal and output a selection signal used to select groups and blocks of the one-time-programmable memory elements and the print elements;
- and
- a switch configured to switch connection between the second terminal and a memory control signal of the one-time-programmable memory elements in accordance with a switching signal included in the data signal,
- wherein for a write to the one-time-programmable memory elements, the switching signal switches such that the switch connects the second terminal and the memory control signal of the one-time-programmable memory elements, and a pulse signal for the write to the one-time-programmable memory elements is input via the second terminal.
Dependencies are inferred from the claim text.