Canon imagePROGRAF TX-3100 36" Printer with Basket - Manual (Page 766)

Paper Source Does Not Switch When Roll Paper Is Used Up
Check Check the paper settings.
Check the following setting items on Paper-related settings and perform settings.
• Select Enable for Switch roll paper when low .
• Select Barcodes or Auto estimate for Manage remaining roll amount .
• Select While feeding for Paper retention settings .
Paper-related settings
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