I don't see anything about card stock being supported:
Plain: Plain Paper, High Resolution Paper;
Super High Gloss: Photo Paper Pro Platinum;
Glossy: Photo Paper Plus Glossy II, Photo Paper Glossy;
Semi-Gloss: Photo Paper Plus Semi-Gloss, Photo Paper Pro Luster;
Matte: Matte Photo Paper;
Envelope: U.S. #10 Envelope
Bay Area - CA
~R5 C (126.96.36.199) ~RF Trinity, ~RF 100~400, +Canon Control Ring~6D2 (v1.1.1) Retiring ~EF Trinity, others ~DxO PhotoLab Elite ~Windows10/11 Pro ~EVGA RTX 3080Ti FTW3 Ultra ~ImageClass MF644Cdw ~Pixel6 ~CarePaks Are Worth It
Unfortunately, the MX470 is not designed for card stock. Since the printer has a front feeding cassette, stiffer paper like card stock can jam in the back. The closest models that can handle that paper type would be the TS9520 or our pro series.
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