there is provided a media pack which can be removably mounted in a printer , and which allows a consumable article or articles contained therein for use by the printer , and enables the printer to easily recognize whether there is a possibility of degradation of the consumable article due to a long time period elapsing after filling or producing of the consumable article . a pack body contains ink and a print medium for use by the printer , and a memory is arranged within the pack body , for having readably written therein data related to the print medium , which includes at least information of a year and month at which the print medium was filled or produced .