Canon varioPrint 115 Operation Manual page 314

The top of the image is smaller than the bot-
tom of the image, or the other way around
(trapezoid shape image).
The image is reduced or shrunk in the feed di-
rection (elongation).
NOTE
Combinations of two or more deviations can occur.
Canon varioPRINT DP line
Examples of when to Perform Media Registration
Chapter 13 - Media Handling 313