Sony a (alpha) SLT-A55VL - Manual (Page 173)

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Printing images
You can date images when printing them. The position of the date (inside
or outside the image, character size, etc.) depends on your printer.
MENU button t 1 t [Specify Printing] t [Date Imprint] t
[On]
Note
• This function may not be provided, depending on the printer.
Dating images