Holder for roll-type print media, roll-type print media cassette, and printing apparatus

A roll-type print media cassette, comprising:

• a quantity of print media wound in the shape of a roll;
• supporting means for rotatively supporting said roll-type print media;
• and
• regulating means for regulating the unwinding of said roll-type print media,
• wherein:
• said print media is wound around a cylindrical member and said supporting means comprises,
• first and second supporting means for supporting said roll-type print media rotatively at either side of said roll-type print media, and
• coupling means for coupling said first and second supporting members;
• said regulating means comprises pawls formed at at least three predetermined positions around the diameter of each of said first and second supporting members and positioned to face each other across said media;
• each of said pawls securing said print media at a maximum diameter of said first and second supporting means;
• and
• an anti-unwind portion of said pawls, facing said print media, maintains a constant distance from said cylindrical member.

A printing apparatus which uses a roll-type print media wound in the shape of a roll, comprising:

• print media supporting means for rotatively supporting said roll-type print media in a stable position;
• a contact sensor for detecting the presence or absence of said roll-type print media;
• a door part which can be opened and shut freely;
• a tray, positioned internal to said door part, for loading said roll-type print media;
• door part open and shut driving means, having an an arm coupled with said door part, for driving said door part to be opened and shut by moving said arm;
• and
• fixing means, connected to said arm, for engaging at least a portion of said roll-type print media with at least a portion of said supporting means when said door part is in a closed position.