Odd/even stroke control for reduced video data clocking

A method for printing an image on a recording medium with a printhead having a plurality of nozzles according to a bitmap of image data having rows and columns, the method comprising:

• selecting a portion of the bitmap of image data with the portion selected having selected bits and unselected bits, the selected portion including a column of bits one bit wide and N bits high;
• controlling the selection of bits by a logic control signal indicating which of the bits of the portion selected are to be selected;
• transferring only the selected bits in a serial fashion to the printhead;
• and
• directing the printhead to emit liquid ink from selected ones of the nozzles in response to the logic control signal.

A printing apparatus having a printhead with a plurality of drivers for causing ink to be ejected from nozzles to print an image on a recording medium according to a bitmap of image data having rows and columns of bits, the printing apparatus comprising:

• an electronic selection circuit receiving a portion of the bitmap of image data, including N bits, and outputting selected bits of the portion, the number of selected bits being less than N;
• a logic control line coupled to said electronic selection circuit, said logic control line transmitting a control signal controlling the selection of the selected bits;
• an electronic transfer circuit coupled to said electronic selection circuit, transferring only the selected bits of the selected portion;
• and
• an electronic control circuit, coupled to said electronic transfer circuit and to said logic control line, receiving the transferred selected bits and selectively addressing a portion of the plurality of drivers in response to the transmitted control signal received from said logic control line.