| 摘要 |
PROBLEM TO BE SOLVED: To facilitate the support of a rolled sensitive material in a dark room by a core for supporting the sensitive material in a paper magazine. SOLUTION: A middle core is dividable into two members 1A, 1B, and each of members 1A, 1B can be joined with a thread member 10. Thread lines 11, 12 consisting of a plurality of taped holes having a space to meet various widths of a sensitive material are formed on the surfaces of the members 1A, 1B, and flange parts 2, 3 are attached at the positions of the taped holes to meet the the size of the sensitive material to be used with screws 14. An inserting part 15 having a plurality of stepped parts insertable into paper tubes having a plurality of sizes is formed in the flange parts 2, 3. Nonskid parts 16, 17 are formed on the periphery of the inserting part 15 and the surface of the stepped part. In the case where the flange parts 2, 3 is attached to the members 1A, 1B in a dark room, the sensitive material can be supported only by joining the members 1A, 1B with the thread member 10 in the dark room.
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