Image forming apparatus and image formation method that perform smoothing

Abstract

Provided is an image forming apparatus that performs smoothing in conversion of pseudo high resolution without using a large translation table. A smoothing process part performs smoothing based on a density of a peripheral pixel that adjoins a target pixel on edge. When a density change between both sides of the target pixel in a sub scanning direction is larger than a density change between both sides of the target pixel in a main scanning direction, a density of a plurality of pixels after conversion of pseudo high resolution of a sub scanning direction corresponding to the target pixel is mutually changed. Also, when a density change between both sides of target pixel in the sub scanning direction is not larger than a density change between both sides of the target pixel in the main scanning direction, the density set to the same.