Large classification: Plane
Middle classification1: Whole area
Definition: Images and text missing from the whole sheet.
Middle classification2
All black
Blank
Middle classification1: Non-reproduction
Definition: Parts of the developed images and letters are not reproduced.
Middle classification2
White zone
Wormholes
Sample
Copied paper is all black.
No image is reproduced.
Sample
Part of a solid image or halftone is
missing.
The outline of a letter (or a line) is
reproduced but the inside of it is
missing.
Image Quality
Definition
Definition
1377