Canon LBP7210Cdn Manual page 179

Specify the settings for [Page Size] and [Output Size].
(1) Display the [Page Setup] sheet.
(2) Select the page size of the document created by an application.
(3) Select the size of the paper loaded in the paper source as needed.
IMPORTANT
If the [Page Size] setting and [Output Size] setting are not the same
The print is automatically reduced or enlarged to fit on the page.
When printing from the paper drawer
Use the following procedure to check that the [Output Size] setting and [Register Paper Sizes]
setting are the same.
1. Click [ ] (Display Printer Status Window).
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3. Check that the [Register Paper Sizes] setting is the same as the [Output Size]
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