Patent ID: 7481315

Claim:
A printing plate packaging box comprising: a box main body which accommodates a bundle of photosensitive printing plates, which are not sealed within a light-shielding wrapper, and which is provided with a supply opening through which the photosensitive printing plates are taken out, said photosensitive printing plates being in direct contact with said box main body; an opening/closing lid which is removably attached to said box for opening/closing the supply opening; and a light-shielding member which prevents direct entry of light from outside into the inside of the box main body, provided in the vicinity of a zone in which the box main body and the opening/closing lid are contacted to each other in an assembled state, the light-shielding member being connected to the opening/closing lid such that the light-shielding member blocks the direct entry of light from outside into the inside of the box through the zone in which the box main body and the opening/closing lid are contacted to each other in the assembled state, and said light-shielding member being circumferentially larger than said box main body such that said light-shielding member surrounds and covers an outermost portion of said box main body, wherein a sheet-type material of which surface is smooth and air tight is adhered onto an outer surface of said opening/closing lid.