| 摘要 |
PURPOSE:To obtain an image of good printing grade on plain paper by specifying the contact angle of a recording liquid whose volume is within a specific range to recording paper. CONSTITUTION:When recording is performed by applying the liquid droplet of a recording liquid whose volume is within a range of 34 - 168pl to recording paper whose cellulose fibers are exposed to the surface thereof, the contact angle theta of the recording liquid to the recording paper is set to 140 deg. or more. In this case, the surface tension gamma of the recording liquid at 25 deg.C is 60 dyne/cm or more and, as the recording paper, one characterized by that ash content is 2.86 - 15.2%, the content of a rosin size is 0.14 - 0.74%, a thickness is 81 - 136mum, a basis wt. is 57 - 89g/m<2> a Stockigt sizing degree is 7 - 71sec and a roughness index Kr is 10.5ml/m<2> or more is used. By this method, when aqueous ink is used to perform recording on plain paper by an ink jet printer, good printing grade can be obtained. |
