Canon MG8100 series On-Screen Manual page 520

(A) Effective angle: 10 degrees up, left, or right from the central axis
(B) Infrared Port of the machine
(C) Approximately 8 inches / 20 cm (Do not block with an object.)
(D) Infrared Port of the mobile phone
6.
Select the photo to print and send the data to the machine using the infrared
communication function of the mobile phone.
Printing will start after receiving all data.
Note
Do not place any obstacle between the Infrared Ports of the machine and mobile phone, as it
will block data transmission.
During receiving data, be careful not to interrupt infrared communication with the machine. If it
is interrupted, send the data from the mobile phone again.
Depending on your device, the print quality may be degraded due to the restriction on the
infrared transfer capacity.
We recommend printing on sticker when the print quality on other types of paper is not fine.
Video files cannot be printed.
Depending on your device, data saved on a memory card may not be printed.
About transmittable data
Due to security settings on the mobile phone, downloaded content or photos downloaded
from a URL attached to an E-mail cannot be printed.
Depending on the size of a photo, it may take a while for this machine to start printing after
starting infrared communication.
Printed quality and orientation (portrait or landscape) are determined automatically
according to the shot photo size.
Depending on the photo size shot on the mobile phone, the edges of the image may be cut
off when performing borderless printing; the margin size may change when printing with
borders.
If the photo file is over 1.8 MB in size, it may not be possible to send the file.
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