Patent ID: 7686166

Claim:
A packing box for photosensitive recording material comprising: a box body of a rectangular shape having a longitudinal direction and a short direction in cross-section for storing a photosensitive recording material and a lid member provided at an output port for the photosensitive recording material so as to be capable of shielding light as separate members, wherein the box body includes a storage section for storing the photosensitive recording material and a lid-covered portion formed on an upper portion of the storage section and configured so that the lid member can be fitted onto the lid-covered portion, wherein the lid-covered portion includes a lid-covered fixed surface extending in the longitudinal direction and a lid-covered rotatable portion extending in the longitudinal direction in parallel with the lid-covered fixed surface and being rotatable outward and downward along a valley bending line to open the output port, and a first lid-covered end surface and a second lid-covered end surface formed on both sides of the lid-covered fixed surface at a right angle thereto so as to continue from the lid-covered fixed surface and the box body, wherein the lid-covered fixed surface has an upper corner portion formed into an arcuate shape on the side of the lid-covered fixed surface on which the first lid-covered end surface is provided, wherein the lid-covered rotatable portion has, on a side of the lid-covered rotatable portion closest to the first lid-covered end surface, both an upper corner portion formed into an arcuate shape and a curved portion formed into an arcuate shape immediately below the upper corner portion, said curved portion extending from an outermost edge of the upper corner portion toward the second lid-covered end surface, and wherein the lid-covered rotatable portion is formed with an inner flap on a side of the lid-covered rotatable portion closest to the second lid-covered end surface, and the inner flap can be positioned inside the second lid-covered end surface in contact thereto when the lid-covered rotatable portion is closed, and can be positioned so that the lower end thereof is seated inside the second lid-covered end surface in contact thereto when the lid-covered rotatable portion is opened.