Image data generation method and device, and stencil printing apparatus, with density conversion based on pressing pressure based on recording medium width or thickness

A device for generating image data, comprising:

• an image data receiving unit for receiving an input of image data;
• a recording medium information receiving unit for receiving information of width and/or thickness of a recording medium, the recording medium receiving an image to be recorded thereon, the image representing the image data received by the image data receiving unit;
• a pressing pressure obtaining unit for obtaining a preset pressing pressure value based on the information of width and/or thickness received by the recording medium information receiving unit, the preset pressing pressure value being used when the image is recorded on the recording medium;
• an image density information obtaining unit for obtaining information of image density in a reference area, the reference area being a part of the image data;
• an image density information conversion unit for obtaining converted image density information by converting the information of image density in the reference area based on the pressing pressure value and the information of image density;
• and
• an image data obtaining unit for generating processed image data according to the converted image density information obtained by the image density information conversion unit.