US 11,981,129 B2
Element substrate, liquid discharge head, and printing apparatus
Soichiro Nagamochi, Kanagawa (JP); Toshio Negishi, Kanagawa (JP); and Yasuhiro Soeda, Kanagawa (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Mar. 10, 2022, as Appl. No. 17/691,281.
Claims priority of application No. 2021-040697 (JP), filed on Mar. 12, 2021.
Prior Publication US 2022/0288924 A1, Sep. 15, 2022
Int. Cl. B41J 2/045 (2006.01); G11C 17/16 (2006.01); G11C 17/18 (2006.01)
CPC B41J 2/04541 (2013.01) [B41J 2/04536 (2013.01); B41J 2/04586 (2013.01); G11C 17/16 (2013.01); G11C 17/18 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An element substrate, comprising:
a plurality of groups of print elements;
a plurality of groups of memory elements;
a plurality of stages of shift registers configured to input and hold a serial data signal;
a latch circuit configured to latch the serial data held by the shift registers;
a decoder circuit configured to input an output of the latch circuit and output a selection signal for selecting a block of the print elements or the memory elements; and
a mask circuit configured to mask the output of the selection signal for selecting the block of the memory elements from the decoder circuit in accordance with an input bit data signal, wherein
the block of the print elements or the memory elements includes a plurality of print elements or memory elements in which one element is selected in each of the plurality of groups, and
the memory elements are one time programmable memory elements, each of which stationary holds information and functions as a memory that can be programmed only once.