Information recording medium cartridge

An information recording medium cartridge provide with

• a disc-like information recording medium,
• a cartridge casing having the information recording medium accommodated therein,
• a shutter which opens and closes recording and/or reproducing openings arranged in right and reverse sides of the cartridge casing,
• a slide member having the shutter mounted thereto, and
• a guide mechanism which slidably mount the slide member to the cartridge casing so as to slide the shutter between a first position for closing the openings and a second position for opening the openings, characterized in that
• the guide mechanism is provided with a shutter contact and separation operating part, wherein during sliding from the first position to the second position, the shutter contact and separation operating part moves the shutter in a direction of separation with respect to a shutter slide face of the cartridge casing.

An information recording medium cartridge provided with

• a shutter which opens and closes recording and/or reproducing openings arranged in right and reverse sides of the cartridge casing having an information recording medium accommodated therein, and
• a slide member which movably mounts the shutter to the cartridge casing in a direction to open and close the openings,
• wherein the shutter is divided into a first shutter plate for opening and closing the recording and/or reproducing opening arranged in one of the right and reverse sides of the cartridge casing and a second shutter plate for opening and closing the recording and/or reproducing opening arranged in another side of the cartridge casing,
• wherein the slide member is divided into a first slide portion to which the first shutter plate is mounted and a second slide portion to which the second shutter plate is mounted,
• wherein the first and second shutter plates are provided with a shutter main body which overlaps the right side or the reverse side of the cartridge casing to open and close the opening and a slide-member mounting portion arranged at an end of the shutter main body for mounting the first and second slide portions on an inner surface thereof, and
• wherein the slide-member mounting portion is provided with a shutter-opening-member engagement with which a shutter opening member of the recording and/or reproducing device is engaged, characterized in that
• the shutter-opening-member engagement comprises a shutter-side engagement formed by recessing the slide-member mounting portion of the shutter plate and a slide-member-side engagement formed by recessing the slide portion and facing the shutter-side engagement.

An information recording medium cartridge provided with

• a shutter which opens and closes recording and/or reproducing openings arranged in right and reverse sides of the cartridge casing having an information recording medium accommodated therein, and
• a slide member which movably mounts the shutter to the cartridge casing in a direction to open and close the openings,
• wherein the shutter is divided into a first shutter plate for opening and closing the recording and/or reproducing opening arranged in one of the right and reverse sides of the cartridge casing and a second shutter plate for opening and closing the recording and/or reproducing opening arranged in another side of the cartridge casing,
• wherein the slide member is divided into a first slide portion to which the first shutter plate is mounted and a second slide portion to which the second shutter plate is mounted, and
• wherein the first and second shutter plates are slid independently by the first and second slide portions, characterized in that
• the information recording medium cartridge is provided with
• shutter-opening-member engagements, wherein when inserted into a first recording and/or reproducing device, a shutter opening member provided to the first recording and/or reproducing device is engaged with the shutter-opening-member engagement which is pressed by the shutter opening member to slide the first and second shutter plates in a direction to open the openings, and
• miss-insertion stops, wherein when inserted into a second recording and/or reproducing device, the shutter opening member is engaged with the miss-insertion stop to stop further insertion of the cartridge by the shutter opening member.

An information recording medium cartridge provided with

• a shutter which opens and closes recording and/or reproducing openings arranged in right and reverse sides of the cartridge casing having an information recording medium accommodated therein, and
• a slide member which movably mounts the shutter to the cartridge casing in a direction to open and close the openings,
• wherein the shutter is divided into a first shutter plate for opening and closing the recording and/or reproducing opening arranged in one of the right and reverse sides of the cartridge casing and a second shutter plate for opening and closing the recording and/or reproducing opening arranged in another side of the cartridge casing,
• wherein the slide member is divided into a first slide portion to which the first shutter plate is mounted and a second slide portion to which the second shutter plate is mounted, and
• wherein the first and second shutter plates are provided with a shutter main body which overlaps the right side or the reverse side of the cartridge casing to open and close the opening and a slide-member mounting portion arranged at an end of the shutter main body for mounting the first and second slide portions on an inner surface thereof, characterized in that
• an end of the slide member in a slide direction protrudes from an end of the slide-member mounting portion, the protruded end being provided with a shutter-opening-member engagement with which a shutter opening member of the recording and/or reproducing device is engaged.