Konica Minolta FK-502 - Manual (Page 196)

Useful transmission functions 6
C451 6-36
6.10 Sending an original with folds (Z-Folded Original)
Z-Folded Original
Function to fax originals with original sizes that cannot be correctly detected
due to fold lines.
2
Note
Use ADF. Z-Folded Original cannot be faxed using original glass.
Originals from the second original onwards are transmitted with the size
same as that of first original. When the original size differs for each page,
specify [Mixed Original] without specifying Z-Folded Original.
Following functions cannot be used simultaneously.
Mixed Original, Long Original, Polling RX, Bulletin board Polling RX, and
Separate Scan settings