| 摘要 |
PURPOSE:To obtain a transfer sheet superior in each of toner fixability, conveyability of the sheet, writability, and erasability, by forming a polymer electrolyte- contg. layer on one of matted layers when a butyl methacrylate polymer is used on both sides, and on the matted layer opposite to a butyl methacrylate polymer layer when it is used for one side. CONSTITUTION:Matted layers 2, 2' are formed on both sides of a base 1 by using a resin having urethane bonds, a polymer electrolyte layer 3 is formed on the layer 2' and a polybutyl methacrylate layer 4 is formed as an overcoat layer. The matted layer is composed essentially of a fine powder filler, such as silica, and a binder. It is necessary to use a cross-linkable type resin by >=80% of the binder, and especially, an acrylic urethane resin is suitable. The polybutyl methacrylate is used in the range of 5-20wt% of the total weight of the solid resin. A polyester film is preferable for the base 1, and sodium polyvinyl phosphate, polyethyleneimine chloride, etc. are used for the polymer electrolyte. |
