A printhead tolerant of switching noise that occurs when concurrently
driving plural printing elements, a head cartridge using the printhead,
and a printing apparatus can be provided. The printhead includes plural
printing elements and plural driving elements for driving the plural
printing elements, and prints using these printing elements. The
printhead also includes a shift register which receives print data in
synchronism with a clock signal, and a latch circuit which latches the
print data input to the shift register in synchronism with a latch
signal. The printhead further includes a restriction circuit which
restricts input of the print data and clock signal to the shift register
and input of the latch signal to the latch circuit in synchronism with
input of an enable signal for driving the plural driving elements.