Printing control apparatus, method and printer driver

Abstract

Whether rendering instructions include designation of a logical operation is determined (601). If it is determined that the rendering instructions include designation of a logical operation, then the rendering instructions are developed into multivalued bitmap data (608) every single line of the input rendering instructions and the multivalued bitmap data is subjected to color processing and binarization processing (609,610,611). When the rendering instructions do not include designation of a logical operation, color processing and binarization processing is executed (602,603,604) for every color of the rendering instructions, whereby a brush is created and stored in advance. The brush is pasted into an applicable area of the rendering instructions to achieve development into binary bitmap data.

Description

technical field [0001] The invention relates to a printing control device for outputting printing data for printing, a control method thereof and a printer driver program. Background technique [0002] Conventionally, the processing of color image data by a printer driver is roughly divided into the following three types. First, the first method (high-quality mode) is a method (high-quality mode) of expanding bitmap data in a multi-valued bitmap area (multi-valued tendering) with respect to drawing commands from the OS, when the expansion process of all image commands is completed Color processing (color correction processing, multi-value color conversion processing, binarization processing) is performed on the entire multi-value bitmap area. [0003] The second method is a method (RGB high-speed mode) that performs color processing (color correction) on drawing commands from the OS, performs binarization processing on the original RGB data, and generates a binary image (br...

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Problems solved by technology

[0005] However, in the high-quality mode of the first method, multi-valued bitmap data is expanded and color processing is performed on the entire area, so a large amount of storage capacity is used, and color processing and binarization processing need to be performed in units of pixels , so the processing efficiency is poor

[0006] The RGB high-speed mode of the second method generates the final printed CMYK data from the binary RGB bitmap data, so in particular, the balance of UCR (expressed by CMY ink or black data expressed by K ink) cannot be changed, so , quality degradation

[0008] However, this CMYK high-speed mode needs to perform logical operation processing on the premise of primary independence in the CMYK color space that is not a primary independent conversion from the RGB color space, so it is difficult to obtain the ideal output result.

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