| 摘要 |
PURPOSE:To prevent the generation of stains by transfer at the time of using an impact type printer by providing the region to be printed on a tacky adhesive layer with a color developing agent layer which develops color by bringing a color developing agent into reaction. CONSTITUTION:This pressure sensitive tacky adhesive sheet 10 is obtd. by forming the repeelable tacky adhesive layer 12 onto a base material 11 and further forming the color developing agent layer 13 coated with the color developing agent which develops color by bringing the color developing agent into reaction in the region to be printed of the tacky adhesive layer 12. Printing is executed by a printer head PH of the wire dot printer using a transfer sheet 20 coated with the color developing agent layer 22 sealed in microcapsules on the base material 21 as an ink ribbon of the printer. Namely, the microcapsules of the color developing agent layer 22 of the ink ribbon 20 are broken by the printer head PH and, therefore, the color developing agent layer 12 of the pressure sensitive tacky adhesive sheet 10 develops color by reacting with the color developing agent and information appears. Further, the sheet is folded back from perforations and is pressured, by which the tacky adhesive layers 12 are tightly adhered and sealed to each other. |
