| abstract |
The present invention relates to a color developing film and a pressure test film and a method of manufacturing the same. The color developing film may include a substrate configured to form a color developing film by applying another layer thereon; An uneven structure layer formed on the substrate; And a microcapsule coated on the uneven structure layer and containing an electron-donating colorless dye precursor therein, wherein the electron-donating colorless dye precursor is in contact with an electron-accepting compound to form a color Layer; When the chromogenic film is under pressure, the concave-convex structure layer compresses the chromogenic layer so that the microcapsules in the chromogenic layer are broken and the electron-donating colorless dye precursor is released. By using the uneven structure layer, the color developing film can achieve reduction and concentration of the internal pressure region of the pressure test film and the actual internal pressure region of the microcapsule, so that even when a small pressure is applied to the pressure test film, the high sensitivity of the pressure test film is Can be achieved. |