| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a stable pressure-sensitive coloring sheet for a recorder which is free of influence from temperature, humidity, or the like, is excellent in stability, allows clear and correct recording, allows easy, low-cost, and disposable use, and provides no coloring during storage or by external pressure such as impact during transportation. <P>SOLUTION: The pressure-sensitive coloring sheet for a recorder includes a transparent base material. The front surface of the base material includes a developer layer containing an electron accepting developer and a microcapsular coloring layer containing an electron donating coloring agent. The back surface of the base material includes ruled lines for graph use. A trajectory formed by coloration through the reaction of the developer and the coloring agent is observed from the side of the transparent base material including the ruled lines for graph use. The average particle diameter of the microcapsule is 2 to 30μm. The coating of the microcapsule is made of an early condensate of melamine-formalin resin or urea-formalin resin. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
