Cutter device having detachable blade and printer having the same

A printer, comprising:

• a receptacle section receiving a rolled recording medium;
• a printing section for printing an image on the recording medium from the receptacle section;
• a cutter section for cutting the recording medium from the printing section at a prescribed length, the cutter section including,
• a body,
• a first unit located at a predetermined position on the body,
• a second unit movably combined with the first unit,
• a fixed blade supported at a predetermined position of the second unit,
• a holding member movably supported by the first unit,
• a movable blade detachably supported by the holding member so that the movable blade partially engages the fixed blade when the second unit is combined with the first unit, the movable blade being exposed to the atmosphere when the second unit is moved against the first unit,
• wherein the movable blade is attached to or detached from the holding member when the second unit is moved from the first unit;
• and
• a motor for displacing the movable blade of the cutter section through the holding member to continuously shift the engagement position between the fixed blade and the movable blade to cut the recording medium.

A cutter device having a fixed blade and a movable blade opposed to the fixed blade, comprising:

• a first structure which supports the movable blade so that the movable blade partially engages the fixed blade;
• a second structure which displaces the movable blade so that a position of the engagement between the fixed blade and the movable blade shifts continuously;
• and
• a third structure which permits attaching or detaching of the movable blade to and from the first structure.

A printer comprising:

• a paper conveying section for the conveyance of a continuous recording paper;
• a printing section for printing an image onto the paper which is conveyed by the paper conveying section;
• and
• a cutter device, the cutter device comprising a fixed blade supported at a predetermined position, a movable blade opposed to the fixed blade with the paper therebetween which paper is conveyed by the paper conveying section, a structure which supports the movable blade so that the movable blade partially engages the fixed blade, a structure which displaces the movable blade so that the position of the engagement between the fixed blade and the movable blade shifts continuously, and a structure which permits attaching and detaching of the movable blade with respect to a body of the device.