Abstract: An apparatus to transmit data from a digital front end, to a digital printing head. The apparatus includes at least two digital page processing units, a first processing unit (304) and a second processing unit (308). Each of the processing units includes, a frame buffer configured to store digital page data in an intermediate format; a conversion element adapted to convent the digital page data from said intermediate format into a printable format data, and a communication element (344, 348) adapted to transmit the printable format data to a digital printing head for printing. The communication element (344) of the first processing unit (304) is adapted to deliver the first part (312) of the printable format data to said printing head, and the communication element (348) of the second processing unit (308) is adapted to deliver the second part (316) of the printable format data to the printing head.