JPS6341072U

JPS6341072U -

Info

Publication number: JPS6341072U
Application number: JP13489186U
Authority: JP
Priority date: 1986-09-04
Filing date: 1986-09-04
Publication date: 1988-03-17

Description

[Brief explanation of the drawing]

第１図は、本考案の写真支持体シート用円筒状
コアの一実施態様の斜視説明図であり、第２図は
、本考案の写真支持体シート用円筒状コアの他の
実施態様の断面説明図であり、第３図は従来の円
筒状コアに写真支持体シートを巻き重ねたときの
、巻きつけ先端部分附近の状態の部分的説明図で
あり、第４図は、本考案の円筒状コアに、写真支
持体シートを巻き重ねたときの、巻きつけ先端部
分附近の状態の部分的説明図である。１……円筒状コア、２……写真支持体シート、
３……シートの巻きつけ先端部、４……巻きつけ
先端部上への巻き重ね部分、５……コア外周面、
６……段差状切欠部、７……切欠部の先端部、８
……切欠部の末端部、９，１０……切欠部の底面
、１２……両面接着テープ。 FIG. 1 is a perspective explanatory view of one embodiment of the cylindrical core for a photographic support sheet of the present invention, and FIG. 2 is a cross-sectional view of another embodiment of the cylindrical core for a photographic support sheet of the present invention. FIG. 3 is a partial explanatory diagram of the state near the winding tip when a photographic support sheet is wound around a conventional cylindrical core, and FIG. FIG. 2 is a partial explanatory view of the state near the winding tip when a photographic support sheet is wound around a shaped core. 1... Cylindrical core, 2... Photographic support sheet,
3... The winding tip of the sheet, 4... The overlapped part on the winding tip, 5... The outer peripheral surface of the core,
6... Step-shaped notch, 7... Tip of the notch, 8
...Distal end of the notch, 9, 10... Bottom surface of the notch, 12... Double-sided adhesive tape.

Claims

[Claims for Utility Model Registration] 1. In a cylindrical core for wrapping a photographic support sheet in multiple layers, on the outer peripheral surface of the core, the cylindrical core is provided with a length equal to or longer than the width of the photographic support sheet. A step-like notch extending along the length axis is formed, and the depth from the outer peripheral surface of the core to the bottom of the notch at the tip of the step-like notch is equal to the depth of the photo support. The depth is equal to or greater than the thickness of the body sheet, and the depth gradually decreases from the tip to the distal end, and the bottom surface of the notch is continuous with the outer circumferential surface of the core at the distal end. An improved core for a photographic support sheet. 2. The core according to claim 1, wherein the bottom surface of the notch has a convex curved surface. 3. The core according to claim 1, wherein the bottom surface of the notch is flat. 4 The depth of the tip of the notch is 0.1 to
The core according to claim 1 of the utility model registration, which is within the range of 0.4 mm. 5. Utility model registration claim 1, wherein the depth of the tip of the notch is approximately equal to the total thickness of the photographic support sheet and the thickness of the adhesive means for fixing the tip. Core as described in section. 6. The core according to any one of claims 1, 2, and 3, wherein the width of the notch is within a range of 10 to 45 mm.