Disk cartridge with single shutter held in multiple open positions

A cartridge assembly for a data storage disk, the cartridge assembly comprising:

• a casing for holding the data storage disk, the casing defining a plurality of openings for exposing the data storage disk;
• and
• a moveable member disposed to slide on a side of the casing opposite the data storage disk to cover and uncover the openings;
• wherein at least one of the casing and the moveable member comprises means for holding the moveable member, the means for holding being adapted to contact an edge of the moveable member to hold the moveable member in place over the openings, the means for holding further being adapted to contact an edge of the moveable member to hold the moveable member in place away from the openings free of external force acting on the assembly.

A cartridge assembly for a data storage disk, the cartridge assembly comprising:

• a housing for containing the data storage disk, the housing defining a plurality of openings for exposing a portion of the data storage disk;
• end
• an external shutter supported by die housing outside the housing, the shutter being movable between a closed position for covering the openings defined by the housing, a first open position for uncovering the openings defined by the housing to expose the data storage disk, and a second open position for uncovering the openings defined by the housing to expose the data storage disk, die first open position and the second open position being disposed on opposite sides of the closed position;
• wherein the assembly is constructed such that the shutter is unbiased toward the closed position when the shutter is in either the first open position or the second open position.

A method of making a ready-to-use data storage disk cartridge assembly, the method comprising:

• providing a housing, the housing defining a central aperture and two grooves adjacent the central aperture, the two grooves being disposed on opposite sides of the housing;
• disposing a data storage disk within the housing;
• disposing a one-piece shutter over the housing, die shutter including two arms extending on opposite sides of the housing, each sun having a tab disposed on an end thereof;
• inserting the two tabs into the respective two grooves;
• and
• covering the two grooves to generally prevent movement of the tabs out of the grooves and to form a ready-to-use data storage disk cartridge assembly, the shutter being movable between a closed position, in which the shutter covers disk-access openings in the housing, and an open position, in which the shutter allows access to die disk through the openings;
• wherein die method includes assembling only four separate parts to form the ready-to-use data storage disk cartridge assembly.