Patent ID: 8801133

Claim:
An image forming apparatus comprising: a head unit that ejects ink; and a control unit that: creates pixel data showing an amount of the ink to be ejected for predetermined pixels, and ejects metallic ink containing metallic particles from the head unit on the basis of the pixel data for outline pixels on an outline of a metallic image and inside pixels of the metallic image which are inside the outline pixels, the metallic ink being ejected such that: the amount of the metallic ink ejected for the inside pixels is smaller than the amount of the metallic ink shown by the pixel data for the inside pixels, and such that the amount of ejected ink per area in the outline pixels is larger than the amount of ejected ink per area in the inside pixels, wherein the control unit increases the number of pixels in the outline pixels when the amount of data thinned from the pixel data is large, and decreases the number of pixels in the outline pixels when the amount of data thinned from the pixel data is small.