Canon MX530 series Online Manual page 350

Important
• When the application software that created the document has a function for specifying the height and
width values, use the application software to set the values. When the application software does not
have such a function or if the document does not print correctly, use the printer driver to set the values.
• Printing may be disabled depending on the size of the specified user-defined media.
For information about printable sizes for user-defined media, see "Media Types You Can
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Use."