Abstract: The present invention provides a cooling system including: a cold air generator which supplies cold air into a case of an apparatus; a wireless temperature sensor which is provided near at least one module constituting the apparatus and sends temperature data as a radio signal; a transmitter/receiver which sends a radio signal having a predetermined frequency to the temperature sensor and receives a radio signal from the temperature sensor; and a controller which controls an operation of the cold air generator on the basis of a radio signal received by the transmitter/receiver.

Abstract: The present invention provides a cooling system including: a cold air generator which supplies cold air into a case of an apparatus; a wireless temperature sensor which is provided near at least one module constituting the apparatus and sends temperature data as a radio signal; a transmitter/receiver which sends a radio signal having a predetermined frequency to the temperature sensor and receives a radio signal from the temperature sensor; and a controller which controls an operation of the cold air generator on the basis of a radio signal received by the transmitter/receiver.

Abstract: An image recording apparatus comprising a line sensor for reading image data, a driver for outputting the image data read by the line sensor wherein the driver comprises an integrated circuit mounted on a circuit board, and a radiator system for dissipating heat generated by the driver, wherein the radiator system physically contacts the driver.

Abstract: An image reading apparatus with a plurality of line sensors comprises a reference level adjusting circuit for adjusting a level of a dark output outputted from one of the line sensors to a reference level, and a level difference adjusting circuit for progressively adjusting to a minimum a dark output level difference between the reference level adjusted line sensor and a second line sensor adjacent to the former sensor, a dark output level difference between the second line sensor and a third line sensor adjacent to the second line sensor, and so on. When three or more line sensors are used, a level of a dark output outputted from one of the three line sensors which is located at the center of a sensor array of the three sensors is adjusted to the reference level. Alternatively, a level of a dark output outputted from one of three line sensors which is located at one of the ends of a sensor array of the three line sensors is adjusted to the reference level.

Abstract: An image sensor is operable in a read state, a rest state, and a stand-by state. Control signal generating means generate a control signal. The control signal has a first constant preset level during the read state, a second preset level during the rest state, and alternates between the first and second levels at a duty ratio during the stand-by state. Drive circuit means transfer current to the image sensor in response to the control signal. Therefore, current is continuously transferred to the image sensor during the read state, no current is transferred during the rest state, and current is intermittently transferred to the image sensor at the duty ratio during the stand-by state.