Abstract: A projector includes: a lighting device which includes a light source unit for emitting illumination light, and a light control device for controlling the amount of illumination light passing through the light control device by shielding a part of the light from the light source unit; a light modulation unit illuminated by illumination light emitted from the lighting device; and a projection system which projects image light having passed the light modulation unit, the lighting device has an air supply device configured to cool the light control device by cooling air supplied from the air supply device to a cross flow path which crosses an optical path passing the light control device.

Abstract: A roll paper printer comprising a roll paper storage unit having a bottom surface on which a roll paper is held and rolls, an operable cover unit for opening and closing a roll paper loading opening to the roll paper storage unit, a roll paper size detection mechanism comprising a detection lever that can move in a direction protruding into the roll paper storage unit and a direction retracting from the roll paper storage unit, and an urging member for urging the detection lever in the protruding direction, wherein the detection lever separates from the roll paper and is pushed in the protruding direction when an outside diameter of the roll paper stored in the roll paper storage unit decreases to a predetermined size or less, and a detection lever retraction mechanism for moving the detection lever protruding into the roll paper storage unit in the retracting direction against the urging force of the urging member in conjunction with the operable cover unit opening.

Abstract: A first frame member has an accommodating section adapted to accommodate a rolled sheet at a rear side of the first frame member. A print head is operable to perform printing with respect to a part drawn out from the rolled sheet. A second frame member is provided with the print head and supported on a front side of the first frame member so as to be movable between a first position and a second position. A locking mechanism locks the second frame member at the first position. A release lever releases the locked state of the second frame member when the release lever is pulled toward the second frame member. User access with respect to at least the accommodating section is allowed when the second frame member is placed in the second position.

Abstract: A roll paper printer comprising a roll paper storage unit having a bottom surface on which a roll paper is held and rolls, an operable cover unit for opening and closing a roll paper loading opening to the roll paper storage unit, a roll paper size detection mechanism comprising a detection lever that can move in a direction protruding into the roll paper storage unit and a direction retracting from the roll paper storage unit, and an urging member for urging the detection lever in the protruding direction, wherein the detection lever separates from the roll paper and is pushed in the protruding direction when an outside diameter of the roll paper stored in the roll paper storage unit decreases to a predetermined size or less, and a detection lever retraction mechanism for moving the detection lever protruding into the roll paper storage unit in the retracting direction against the urging force of the urging member in conjunction with the operable cover unit opening.

Abstract: A first frame member has an accommodating section adapted to accommodate a rolled sheet at a rear side of the first frame member. A print head is operable to perform printing with respect to a part drawn out from the rolled sheet. A second frame member is provided with the print head and supported on a front side of the first frame member so as to be movable between a first position and a second position. A locking mechanism locks the second frame member at the first position. A release lever releases the locked state of the second frame member when the release lever is pulled toward the second frame member. User access with respect to at least the accommodating section is allowed when the second frame member is placed in the second position.