Hi Bobclark1,
Please try setting the rear feed to 4" x 6", so when you print from your computer on letter sized paper, the printer will default to the cassette.
To do this, please follow these steps:
1. Turn you PIXMA TS9520 on.
2. Tap the gear icon at the bottom of your printer's display.
3. Tap Feed settings.
4. Tap Rear tray paper settings.
5. Tap the Change button.
6. Select KG/4"x6"(10x15) from the list.
7. Choose Pro Platinum, or any type of paper.
8. Tap Yes.
9. Tap the Home icon in the upper left corner.
Once set, please attempt to print.
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Hi Bobclark1,
Please change the printer driver's default setting to the cassette:
1. On your computer, please press the Windows key on your keyboard and the letter R, then let both go.
2. In the Run window that appears, please type CONTROL and click OK.
3. Click on View devices and printers.
4. Click on Printers & scanners.
5. Click on the Canon TS9500 series from the list.
6. Click on Printer preferences.
7. On the Quick Setup tab, set the Media Type to Plain Paper, the Printer Paper Size to Letter.
8. Set the Paper Source to Rear Tray.
9. Click Apply and then OK.
Once set, please attempt to print.
Did this answer your question? If so, please click the Accept as Solution button below so that others may find the answer as well.
