1. An image processing method for an image recording apparatus which records an image by means of dots on a recording medium, the image processing method comprising the steps of: setting the recording medium; and forming the dots on the recording medium; wherein: dot size information relating to the dots that have at least one dot size and are recordable by the image recording apparatus, and recording resolution information are obtained; when image information for a text character or line is transformed into bitmap data which the image recording apparatus can record the image in accordance with, then dot sizes and recording positions of the dots are determined in accordance with the dot size information and the recording resolution information, in such a manner that a recording width of the text character or line approaches a recording width determined in accordance with the image information.