Canon TS6400 Series Online Manual page 201

Feed settings
• When you print from Windows:
The message which prevents misprinting is disabled by default.
To change the setting:
Changing the Printer Operation Mode
• When you print from macOS:
The message which prevents misprinting is enabled by default.
To change the setting:
Changing the Printer Operation Mode
Important
• When the message which prevents misprinting is disabled:
The printer starts printing even though the paper settings for printing and the paper information
registered to the printer are different.
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