US 12,341,939 B2
Printing system, printing apparatus, and printhead
Yuma Sato, Kanagawa (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Dec. 12, 2022, as Appl. No. 18/079,341.
Claims priority of application No. 2021-201989 (JP), filed on Dec. 13, 2021.
Prior Publication US 2023/0188661 A1, Jun. 15, 2023
Int. Cl. H04N 1/32 (2006.01); H04N 1/00 (2006.01)
CPC H04N 1/32651 (2013.01) [H04N 1/0083 (2013.01); H04N 1/00933 (2013.01); H04N 1/32128 (2013.01); H04N 2201/0036 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A printing system comprising:
a printing apparatus; and
a printhead including a printing element and configured to be detachable from the printing apparatus,
the printing apparatus including:
a data transmission unit configured to transmit, to the printhead, a clock signal of a predetermined period and a data signal synchronized with the clock signal, and
the printhead including:
a reception unit configured to receive the clock signal and the data signal, and
an information transmission unit configured to transmit, to the printing apparatus, information concerning a reception result of the reception unit,
wherein when the data transmission unit transmits control data of the printing element as the data signal, a first period is set as the predetermined period, and
when the data transmission unit transmits, as the data signal, connection confirmation data for confirming connection of the printhead to the printing apparatus, a second period longer than the first period is set as the predetermined period.