Image forming apparatus and system, information processing apparatus, and their control method

摘要

A printer having a plurality of recording heads each capable of recording with a recording width is connected to a host apparatus. The host apparatus develops an image to generate recording data corresponding to the plurality of recording heads and transmits the recording data to the printer. During the development of the image, the host computer obtains leftmost and rightmost end values for the recording data and transmits them to the printer. The printer determines a scan range of the plurality of recording heads based on the leftmost and rightmost end values, and performs printing the transmitted recording data.