Paper jam My pixma is jammed with a 4x6 piece of computer paper which I can't see or find.

This model has 5 places where you might encounter jammed paper. Since you said you cannot see it, I suspect that it may be one of the following:

1) Inside from the front - (This is a similar to accessing the print cartridges). Raise the scanning unit until it stops (cartridges move to the center). Open the two inner covers. Gently clear the jam. Try not to touch the printer components. Close both inner covers, lower the scanning unit. Press <OK>

2) Inside transport unit - Open the rear cover. Remove the jammed paper or any bits that you may find. Close the rear cover. Press <OK>