| 摘要 |
<p>A pressure device for use in image forming apparatuses comprises a pair of pressure rollers (2,3) by which a media sheet with microcapsules encapsulating a colorless dye and a light-curable agent which hardens by exposure to light is pressed together with an image receiving sheet with a developing agent having a chromogenic effect on the colorless dye after the media sheet is exposed to an image-forming light, a pair of guides (11,12) by which the pair of rollers are rotatably supported, the pair of guides being rotatable at one end relative to each other about a fulcrum (13), a roller-pressing means (60) that is installed through the guides, said roller-pressing means pressing the pair of rollers towards each other, and a pressure changing means (17) that is installed on the guides, the pressure-changing means being adapted to change the pressure to be applied to the rollers by the roller-pressing means according to the length of the image receiving sheet that is measured in a direction perpendicular to the transporting direction of the image receiving sheet.</p> |
