To improve the recognition rate of identification information of an image recording material read from a recording medium package.

The package 12 has: a plurality of films F recorded with image data as visible images by being fed into an image recording device; and a light shielding bag 14 for housing a plurality of these films F and loads the interior of the image recording device with a plurality of the films F housed thus far in the light shielding bag 14 by moving and removing the light shielding bag 14. First and second bar code labels 26A and 26B are pasted to the light shielding bag 14. More specifically, the first and second bar code labels 26A and 26B are pasted along the moving and removing direction of the light shielding bag 14. The first and second bar code labels 26A and 26B are pasted to the light shielding bag 14 in a manner that the extension direction of bars 22a forming the bar codes 22 are made nearly parallel to the pulling direction of the light shielding bag 14.