Abstract: An electronic device that checks a connected state of a signal line is provided. The electronic device includes a controller configured to transmit a check signal and at least one module configured to include a closed loop and receive the check signal. When the controller receives the check signal through the closed loop, the controller determines that the at least one module is connected to the controller.

Abstract: An electronic device that checks a connected state of a signal line is provided. The electronic device includes a controller configured to transmit a check signal and at least one module configured to include a closed loop and receive the check signal. When the controller receives the check signal through the closed loop, the controller determines that the at least one module is connected to the controller.

Abstract: A converter device supplied with a drive power from an image forming apparatus instead of an external device and an image forming apparatus connected to the converter device. The converter device is provided between the image forming apparatus including a power supply port and a USB port and a host device including a parallel port such that data is transmitted and received between the image forming apparatus and the host device. The converter device is connected to the image forming apparatus through the power supply port and a power cable to be supplied with power. The converter device is operated with the supplied power to convert data output from the USB port into data capable of being input to the parallel port or convert data output from the parallel port into data capable of being input to the USB port.

Abstract: An image forming apparatus having a photosensitive element, is provided with a light source for scanning light to the photosensitive element; a light blocking member disposed in a light traveling path of the light from the light source and moving between a blocking position where the light blocking member blocks the light scanned from the light source and a withdrawal position where the light blocking member is withdrawn from the blocking position; a power supply unit for supplying electric power to the light source for scanning light; a power switch unit for regulating power supply from the power supply unit; and an operating part locating the light blocking member at the blocking position and controlling the power switch unit to cut off the power supply in a predetermined exposure condition. As a result, a user is kept from being exposed to the light from a light source.

Abstract: An inkjet image forming apparatus including a printing media storage unit configured to store printing media, a pickup unit configured to pick up a printing medium stored in the printing media storage unit, and a cover made of a conductive material and adapted to come into contact with the printing medium picked up by the pickup unit. An effective removal of static charge from the printing medium is possible by having the printing medium picked up by the pickup unit come into contact with the cover.

Abstract: An inkjet image forming apparatus including a printing media storage unit configured to store printing media, a pickup unit configured to pick up a printing medium stored in the printing media storage unit, and a cover made of a conductive material and adapted to come into contact with the printing medium picked up by the pickup unit. An effective removal of static charge from the printing medium is possible by having the printing medium picked up by the pickup unit come into contact with the cover.

Abstract: An apparatus having a power saving mode function and method controlling the power saving mode thereof is provided. A USB connector provides a communication interface with a USB external device by use of a USB cable. A USB controller determines whether a voltage is supplied from the USB external device based on a value of the voltage input from the USB connector. A main controller enters either the power saving mode or a standby mode based on the determination of the USB controller. Accordingly, if the computer is turned off, the apparatus enters the power saving mode before a predetermined time passes, to thus prevent the waste of power.

Abstract: An image forming apparatus having a photosensitive element, is provided with a light source for scanning light to the photosensitive element; a light blocking member disposed in a light traveling path of the light from the light source and moving between a blocking position where the light blocking member blocks the light scanned from the light source and a withdrawal position where the light blocking member is withdrawn from the blocking position; a power supply unit for supplying electric power to the light source for scanning light; a power switch unit for regulating power supply from the power supply unit; and an operating part locating the light blocking member at the blocking position and controlling the power switch unit to cut off the power supply in a predetermined exposure condition. As a result, a user is kept from being exposed to the light from a light source.

Abstract: A multi-functional product is provided. Such a multi-functional product comprises a main body, a cover on which at least one hook is formed and to which an elastic force is applied in a direction to open the cover away from the main body, a locking lever that locks the cover in a closed position by connecting with the hook through an elastic force applied to the locking lever, and a releasing mechanism including one or more releasing devices that release the locking lever from the hook by rotating the locking lever.

Abstract: An apparatus having a power saving mode function and method controlling the power saving mode thereof is provided. A USB connector provides a communication interface with a USB external device by use of a USB cable. A USB controller determines whether a voltage is supplied from the USB external device based on a value of the voltage input from the USB connector. A main controller enters either the power saving mode or a standby mode based on the determination of the USB controller. Accordingly, if the computer is turned off, the apparatus enters the power saving mode before a predetermined time passes, to thus prevent the waste of power.