Recording-media tape reel
AssigneeFuji Photo Film Co., Ltd.
InventorKiyoo Morita
Life of this patent
Estimating the term…
Abstract
A recording-media tape reel including a cylindrical hub with its center line as an axis of rotation, and a pair of disc flanges extending radially from upper and lower ends of the hub. The tape reel meets the following Equation: H1−α>H2+β in which H1 is a reference value for a distance from a reference plane perpendicular to the rotation axis along the bottom surface of the lower flange, to the radially inner end of the interior surface of the flange, a is a tolerance on the negative side of H1, H2 is a reference value for a distance from the reference plane to the radially outer end of the interior surface, and β is a tolerance on the positive side of H2.
Claims22
A recording-media tape reel comprising:
- a cylindrical hub with its center line as an axis of rotation;
- and
- a pair of disc flanges extending radially from upper and lower ends of said hub so that space for winding recording-media tape is formed between an outer periphery of said hub and opposing interior surfaces of said flange pair;
- wherein H1−α>H2+β met, when H1 is a reference value for a distance from a reference plane, perpendicular to said rotation axis along an exterior surface of one of the two flanges, to a radially inner end of the interior surface of said one flange, α is a tolerance on a negative side of H1, H2 is a reference value for a distance from said reference plane to a radially outer end of said interior surface of said one flange, and β is a tolerance on a positive side of H2.
A recording-media tape reel comprising:
- a cylindrical hub with an outer periphery on which recording-media tape is wound;
- a bottom wall formed on a lower end of the hub;
- upper and lower disc flanges extending from upper and lower ends of said hub;
- and
- an annular reel gear formed on an outer portion of the bottom wall meshable with an annular driving gear;
- wherein, when said reel gear meshes with said driving gear and is rotated, a height of a radially outer end of said lower flange is at a position lower than a height of a radially inner end of said lower flange, and a height of a radially outer end of said upper flange is at a position higher than a height of a radially inner end of said upper flange.
Dependencies are inferred from the claim text.