Abstract: An ink for use in ink jet recording which contains a dye and a pigment as colorants. The pigment is a self-dispersible pigment in which at least one anionic group is bonded directly or through another atomic group to a surface of the pigment, the dye is an anionic dye, 2-pyrrolidone is further contained in the ink as a solvent, and the mass-based content X of 2-pyrrolidone in the ink and the ratio Y of the pigment to the sum of the dye and the pigment satisfy the following formulas 1 to 3 at the same time: 12?X<30??formula 1 50?Y?75??formula 2 Y??2X+84??formula 3.

Abstract: An ink jet recording apparatus minimizing adhesion of ink mist to a recording medium due to electrostatic attraction of a belt conveying the recording medium. The apparatus includes a liquid applying device applying a processing liquid to a position on the recording medium corresponding to an attracting-force generating device provided on the conveying belt. The apparatus discharges the processing liquid to the position before the ink is discharged on the recording medium. Since moisture of the processing liquid reduces surface charges of the recording medium, the amount of ink mist adhering to the recording medium can be reduced.

Abstract: An ink for use in ink jet recording which contains a dye and a pigment as colorants.

Abstract: The temperature of a recording head used for recording is adjusted by heating a recording head that is not used for recording and utilizing the effect of heat conduction. The adoption of such a configuration makes it possible to adjust the temperature of recording head during recording by the use of a relatively simple temperature control circuit. Further, since temperature adjustment can be continuously and efficiently conducted, a good premium discharge condition can be achieved, and the speed of recording can be increased by reducing the number of recovery operations such as preliminary ejection.