You can copy onto various types of paper, such as envelopes, OHP transparencies, thin paper, and thick paper. You need to specify the type of paper on which you are going to make copies.
Printing on envelopes, OHP transparencies, and thick paper may be slower than printing on plain paper.
To prevent multiple sheets from being fed at once, fan paper before placing it on the tray. Load OHP transparencies one by one if they jam when loaded together.