Abstract: An electronic apparatus includes a first unit having a first power switch for turning on/off a data processing part, a hard disk drive device, a power supply part and the electronic apparatus, a second unit that is separated from the first unit, is supplied with the power from the power supply part in the first unit, and has a drive device of a detachable recording media and a second power switch having the same function as that of the first power switch, and a cable for communicating data between the first unit and the second unit and supplying power from the power supply part of the first unit to the second unit.

Abstract: An electronic apparatus includes a first unit having a first power switch for turning on/off a data processing part, a hard disk drive device, a power supply part and the electronic apparatus, a second unit that is separated from the first unit, is supplied with the power from the power supply part in the first unit, and has a drive device of a detachable recording media and a second power switch having the same function as that of the first power switch, and a cable for communicating data between the first unit and the second unit and supplying power from the power supply part of the first unit to the second unit.

Abstract: An electronic apparatus includes a first unit having a first power switch for turning on/off a data processing part, a hard disk drive device, a power supply part and the electronic apparatus, a second unit that is separated from the first unit, is supplied with the power from the power supply part in the first unit, and has a drive device of a detachable recording media and a second power switch having the same function as that of the first power switch, and a cable for communicating data between the first unit and the second unit and supplying power from the power supply part of the first unit to the second unit.

Abstract: An electronic apparatus includes a first unit having a first power switch for turning on/off a data processing part, a hard disk drive device, a power supply part and the electronic apparatus, a second unit that is separated from the first unit, is supplied with the power from the power supply part in the first unit, and has a drive device of a detachable recording media and a second power switch having the same function as that of the first power switch, and a cable for communicating data between the first unit and the second unit and supplying power from the power supply part of the first unit to the second unit.

Abstract: An electronic apparatus includes a first unit having a first power switch for turning on/off a data processing part, a hard disk drive device, a power supply part and the electronic apparatus, a second unit that is separated from the first unit, is supplied with the power from the power supply part in the first unit, and has a drive device of a detachable recording media and a second power switch having the same function as that of the first power switch, and a cable for communicating data between the first unit and the second unit and supplying power from the power supply part of the first unit to the second unit.

Abstract: A method for controlling gradation in an ink jet printer is provided which includes the steps of (a) reading input picture data in first memory means (b) determining the position of a pixel under consideration from the input picture data read out from the first memory means and for calculating an error .di-elect cons.=X-X', where X is input picture data of the pixel under consideration and X' is a level of plural stages to be actually printed, (c) distributing the error .di-elect cons.

Abstract: A printer apparatus in which a multi-nozzle print head can be produced at low cost and which can deal with changes caused with lapse of time. With the printer apparatus, effective resolution can be improved and a more accurate gradation level in picture printing can be achieved for assuring uniform printing quality. The printer apparatus has a shading correction unit 14 for correcting the picture printing data signal for printing using shading correction data previously found and stored in the EE-PROM 10 and shading correction data entered from a man/machine interfacing unit 2 and for generating a head impression signal for driving a print head 16 based on the corrected picture printing data.

Abstract: A printer apparatus in which a multi-nozzle print head can be produced at low cost and which can deal with changes caused with lapse of time. With the printer apparatus, effective resolution can be improved and a more accurate gradation level in picture printing can be achieved for assuring uniform printing quality. The printer apparatus has a shading correction unit 14 for correcting the picture printing data signal for printing using shading correction data previously found and stored in the EE-PROM 10 and shading correction data entered from a man/machine interfacing unit 2 and for generating a head impression signal for driving a print head 16 based on the corrected picture printing data.

Abstract: The present invention is to provide an on-demand type ink-jet printer which is free from the risk such that the nozzle is stopped and which is also free from the maintenance. An ink-jet print head comprises a liquid chamber (2) into which a carrier liquid (7) is filled, ink-jet driving means (3), (4) disposed within the liquid chamber (2), a nozzle (14) communicated with the liquid chamber (2) and a mixing unit (14a) disposed in the vicinity of the nozzle (14) for mixing an ink (9) into the carrier liquid (7). The ink (9) is mixed into the carrier liquid (7) in the liquid chamber (2) by the mixing unit (14a), pressed by the ink-jet driving means (3), (4) and then ink-jetted from the nozzle (14). Since the carrier liquid (7) is constantly filled into the nozzle (14), the nozzle (14) can be prevented from being choked up.