Printing apparatus adjusting phase differences of received signals

A printing apparatus having a printhead, the printing apparatus comprising:

• a memory device configured to store a set of instructions;
• and
• at least one processor configured to execute the instructions stored in the memory device to function as:
• a plurality of sending units configured to respectively send signals;
• a plurality of receiving units provided on the printhead and respectively corresponding to the plurality of sending units, the plurality of receiving units configured to receive signals via a signal line;
• and
• a phase adjustment unit configured to, based on a phase difference of a plurality of signals respectively received by the plurality of receiving units, control and output a delay of the plurality of signals,
• wherein
• each of the plurality of sending units sends a phase adjustment signal for phase adjustment to be performed by the phase adjustment unit, and
• a phase adjustment signal sent by a first sending unit out of the plurality of sending units includes a signal having a coordinate phase and an opposite phase with respect to a phase adjustment signal sent by a second sending unit out of the plurality of sending units.

An apparatus for transmitting signals, comprising:

• a plurality of sending units configured to respectively send signals;
• a plurality of receiving units provided on a printhead and respectively corresponding to the plurality of sending units, the plurality of receiving units configured to receive signals via a signal line;
• and
• a phase adjustment unit configured to, based on a phase difference of a plurality of signals respectively received by the plurality of receiving units, control and output a delay of the plurality of signals,
• wherein
• each of the plurality of sending units sends a phase adjustment signal for phase adjustment to be performed by the phase adjustment unit, and
• a phase adjustment signal sent by a first sending unit out of the plurality of sending units includes a signal having a coordinate phase and an opposite phase with respect to a phase adjustment signal sent by a second sending unit out of the plurality of sending units.