A compact and portable printer, scanner and copier having dimensions and a housing allowing the device to be portable for travel with a laptop computer or other tablet or portable computing device. The three in one printer has a pivotal carriage for linear and rotational movement of the carriage and an ink cartridge. The printer also has an easily accessible removable ink cartridge maintenance system.

A compact and portable printer, scanner and copier having dimensions and a housing allowing the device to be portable for travel with a laptop computer or other tablet or portable computing device. The three in one printer has a pivotal carriage for linear and rotational movement of the carriage and an ink cartridge. The printer also has an easily accessible removable ink cartridge maintenance system.

A compact and portable printer, scanner and copier having dimensions and a housing allowing the device to be portable for travel with a laptop computer or other tablet or portable computing device. The three in one printer has a pivotal carriage for linear and rotational movement of the carriage and an ink cartridge. The printer also has an easily accessible removable ink cartridge maintenance system.

A sheet conveying device includes a conveyor, a first cover and a second cover movable in conjunction with the first cover. The second cover includes a restricted portion configured to be moved together with the second cover. The first cover includes a restricting portion configured to contact the restricted portion to prevent the second cover from being moved from a first position toward a second position when the first cover is located at a closed position. The restricting portion and the restricted portion are contacted to each other at a contact position at which a force, which is applied from the restricted portion toward the restricting portion when the second cover receives an external force, does not include a component force acting in a direction of moving the first cover from the closed position toward an opened position.

A cover closes a first opening of a main box portion. A second opening is formed in a unit housing of an optical scanning unit to externally expose a connector mounted on an electronic board. The unit housing has a protruding inner frame portion and a wiring portion. The protruding inner frame portion protrudes from an outer surface of the unit housing and surrounds the second opening. The cover includes a protruding outer frame portion that protrudes from an inner surface of the cover and surrounds the protruding inner frame portion. A top portion of the protruding inner frame portion is formed along an inner-side portion of the protruding outer frame portion on an inner surface of the cover. A top portion of the protruding outer frame portion is formed along an outer-side portion of the protruding inner frame portion on the outer surface of the unit housing.