An embodiment of a cradle has a cradle body configured to support a printing device. The cradle has first and second printer capture flanges extending from the cradle body proximate a capture end of the cradle body. The cradle has first and second biased latches extending from the cradle body between the capture end and a release end of the cradle body. The cradle has a biased release member movable between a first position and a release position. The cradle has a release linkage supported by the cradle body, the release linkage coupling the biased release member and the first and second biased latches, wherein the release linkage is structured to drive the first and second biased latches from respective locked positions to respective unlocked positions in response to movement of the biased release member from a first position to a release position.

An exhaust valve includes a toroidal surface about an axis of rotation of the valve. The toroidal surface is positionable over a central exhaust port of an engine when lowered. The valve is raised by an actuator in response to increasing rotational speed of the crankshaft of the engine, thereby enlarging and raising the effective opening of the exhaust port. Lateral valve surfaces on either side of the toroidal surface close lateral exhaust ports when the valve is lowered. The lateral valve surfaces may be cylindrical and formed on fins.

An exhaust valve includes a toroidal surface about an axis of rotation of the valve. The toroidal surface is positionable over a central exhaust port of an engine when lowered. The valve is raised by an actuator in response to increasing rotational speed of the crankshaft of the engine, thereby enlarging and raising the effective opening of the exhaust port. Lateral valve surfaces on either side of the toroidal surface close lateral exhaust ports when the valve is lowered. The lateral valve surfaces may be cylindrical and formed on fins.

A holding stand including: a housing having a mounting surface on which a printing device is capable of being detachably mounted and a bottom surface, the mounting surface being an inclined surface where a distance between an upstream end portion of the mounting surface and the bottom surface is greater than a distance between a downstream end portion of the mounting surface and the bottom surface; a fixed engaging member provided at the upstream end portion; a movable engaging member provided at a substantially middle portion of the mounting surface; a guide part provided on the mounting surface and configured to allow the printing device to slide thereon to guide the printing device; and an operation part capable of switching the movable engaging member from an engaging position in which the movable engaging member engages with a second engaging portion to a disengaging position in which engagement is disengaged.

A printing apparatus includes a supporting unit for a medium including an insertion part on which an indented part is provided, a base unit including an insertion inlet for the insertion part, the base unit being configured to have the supporting unit attach and detach to/from the base unit, and a fixing part configured to, when the insertion part is inserted up to a fixing position, fix the insertion part at the fixing position. The fixing part includes a first fixing part and a second fixing part. When the insertion part is inserted up to the fixing position, the first fixing part is configured to engage with the indented part when the indented part is located at a facing position, and the second fixing part is configured to not engage with the indented part when the indented part is located at a facing position.

A printing apparatus includes a supporting unit for a medium including an insertion part on which an indented part is provided, a base unit including an insertion inlet for the insertion part, the base unit being configured to have the supporting unit attach and detach to/from the base unit, and a fixing part configured to, when the insertion part is inserted up to a fixing position, fix the insertion part at the fixing position. The fixing part includes a first fixing part and a second fixing part. When the insertion part is inserted up to the fixing position, the first fixing part is configured to engage with the indented part when the indented part is located at a facing position, and the second fixing part is configured to not engage with the indented part when the indented part is located at a facing position.

An embodiment of a cradle has a cradle body configured to support a printing device. The cradle has first and second printer capture flanges extending from the cradle body proximate a capture end of the cradle body. The cradle has first and second biased latches extending from the cradle body between the capture end and a release end of the cradle body. The cradle has a biased release member movable between a first position and a release position. The cradle has a release linkage supported by the cradle body, the release linkage coupling the biased release member and the first and second biased latches, wherein the release linkage is structured to drive the first and second biased latches from respective locked positions to respective unlocked positions in response to movement of the biased release member from a first position to a release position.

A printing apparatus includes a printer, a baseplate, a jacket, and a container. The printer is configured to perform printing on a recording sheet. The baseplate holds the printer. The jacket is attached to a first surface of the baseplate, and is configured to hold an information terminal. The container is attached to a second surface of the baseplate facing away from the first surface, and is configured to store the recording sheet.

A printing apparatus includes a printer, a baseplate, a jacket, and a container. The printer is configured to perform printing on a recording sheet. The baseplate holds the printer. The jacket is attached to a first surface of the baseplate, and is configured to hold an information terminal. The container is attached to a second surface of the baseplate facing away from the first surface, and is configured to store the recording sheet.

An embodiment of a cradle has a cradle body configured to support a printing device. The cradle has first and second printer capture flanges extending from the cradle body proximate a capture end of the cradle body. The cradle has first and second biased latches extending from the cradle body between the capture end and a release end of the cradle body. The cradle has a biased release member movable between a first position and a release position. The cradle has a release linkage supported by the cradle body, the release linkage coupling the biased release member and the first and second biased latches, wherein the release linkage is structured to drive the first and second biased latches from respective locked positions to respective unlocked positions in response to movement of the biased release member from a first position to a release position.