Canon CDI-E334-010 - Manual (Page 145)

Print Settings/Transfer Settings 143
z The Date and File No. settings change according to the Print
Type as follows.
- Index
[Date] and [File No.] cannot be set to [On] at the same
time.
- Standard or Both
[Date] and [File No.] can be set to [On] at the same time,
however, the printable information may vary between
printers.
z Images dated using (Postcard Date Imprint mode)
(p. 71) are always printed with the date, regardless of the
[Date] setting. As a result, some printers may print the date
twice on these images if [Date] is also set to [On].
z Dates print in the style specified in the [Date/Time] menu
(p. 12).