| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an image forming apparatus using a back area exposure method, that can enhance the reproducibility of a thin-line portion with a relatively inexpensive configuration while suppressing the consumption of toner. <P>SOLUTION: In the image forming apparatus 100, an exposure device 17 performs exposure on a non-image part of an image pattern and performs exposure to an image part of the image pattern in an exposure amount lower than that on the non-image part or does not perform exposure, and an exposure amount control device 19 controls, with respect to pixels having the same density data, an exposure amount given by the exposure device 17 to be smaller in a first portion, which is a thin-line of a width that is equal to or less than a predetermined number of pixels or which is an isolated dot of widths that are equal to or less than the predetermined number of pixels in two directions substantially orthogonal to each other, than in a second portion which is a line of a width exceeding the predetermined number of pixels or a surface of widths that exceed the predetermined number of pixels in two directions substantially orthogonal to each other. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
