| 摘要 |
PURPOSE:To improve printing quality and sensitivity without texture fog and further to achieve the advancement of productivity and quality stability, by a method wherein an undercoat paper of not more than 300 seconds in air permeability of paper is coated with an overcoat layer and connected, in a wet state, to a surface of a smooth material to be dried. CONSTITUTION:A liquid prepared by mixing, for instance, leuco dye of lactone series or the like and binder of starch group or the like is mixed with ultrafine silisic anhydride as pigment to prepare a thermal recording layer coat liquid. A thermal recording undercoat paper of not more than 300 seconds in air permeability of paper is obtained by applying this undercoat layer coat liquid on a wood free paper to be dried. The overcoat layer coat liquid is excessively supplied onto this thermal recording layer with a nozzle state coat liquid supplier and a dry coat thickness at a part connected to a surface of a smooth material is so controlled as to become, for instance, 1mum by a press roll pressure. Then, the overcoat layer coat liquid is dried as it is connected with the smooth material and peeled off after drying. Thereby, a thermal recording paper can be obtained. |
