US 12,263,676 B2
Printing element board and printing apparatus including printing element board
Ryohei Yamada, Kanagawa (JP); and Toshio Negishi, Kanagawa (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Mar. 21, 2023, as Appl. No. 18/124,169.
Claims priority of application No. 2022-046033 (JP), filed on Mar. 22, 2022.
Prior Publication US 2023/0302786 A1, Sep. 28, 2023
Int. Cl. B41J 2/045 (2006.01); B41J 29/393 (2006.01)
CPC B41J 2/04541 (2013.01) [B41J 29/393 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A printing element board comprising:
a plurality of memory modules each including a memory element and a driving circuit configured to drive the memory element,
a plurality of discharge modules,
a control data supply unit configured to select one of a memory module and a discharge module from the plurality of memory modules and the plurality of discharge modules and perform drive control of the selected module, and
a logical product calculation unit configured to, when the memory module is selected, receive a first signal and a second signal output at the same timing, and supply a signal indicating a logical product of the first signal and the second signal to the control data supply unit,
wherein when the signal indicating the logical product of the first signal and the second signal is not supplied from the logical product calculation unit, the control data supply unit does not perform drive control of the memory module.