Konica Minolta SC-215 - Manual (Page 43)

6-5
Halftone
Halftone simulates gray scale by using different size dots.
Particularly when you view the image at a certain distance, it looks
very closely like a gray scale image, yet it consumes less disk
space. Halftone is the picture that we usually see in newspapers
or magazines. Since Halftone is one type of black and white
image, the disk space required to save a halftone image is 1/24 of
that required to save a 24-bit true color image.
Halftone Image