Patent ID: 7589853

Claim:
An information processing apparatus for outputting image-forming print data to an external image-forming apparatus connected to the information processing apparatus through an interface among a plurality of interfaces with different data transfer speeds, the information processing apparatus comprising: storing means for storing a printing condition including a type of a paper; identifying means for identifying a type of the interface; determining means for determining, based on the type of the interface identified by the identifying means, a combination of a quantization method and a compression method for print data; and image processing means for quantizing the print data and compressing the quantized print data based on the combination of the quantization method and the compression method determined by the determining means, wherein the combination of the quantization method and the compression method based on at least periodicity of the quantized data and compression efficiency in accordance with the periodicity, and wherein the print data quantized by the image processing means is output to the external image-forming apparatus through the interface.