Patent ID: 7092115
Filing Date: 2006-08-15
Classification: G06K

Abstract:
1. An image printing apparatus for processing data in which one word consists of eight bits, comprising: printhead driving means for discharging ink from four contiguous nozzles of a printhead at different timings; an editing buffer; a print buffer for outputting image data to said printhead driving means; and a data transfer circuit for reading data from said editing buffer in units of 16-bit data and transferring the data to said print buffer, wherein said data transfer circuit comprises: a first register adapted to store 16-bit data currently read from said editing buffer; a second register adapted to store 4-bit data of 16-bit data previously read from said editing buffer; a control unit adapted to control the transfer to said print buffer of 12-bit data of 16-bit data stored in said first register and 4-bit data stored in said second register; and an address generating unit adapted to generate an address for the data when said control unit transfers the data.