| 摘要 |
PURPOSE:To enhance exactness in copying of continuous gradation parts by placing between a contact glass and an original, a semitransparent or transparent plastic film or the like having a large number of small black spots or lines, etc. uniformly formed on the underside and a matted face on the upside, and copying the original through this film. CONSTITUTION:A semitransparent or transparent plastic film or glass or the like 1, 12, 14, having a large number of small black spots 2 or lines 11 uniformly formed on the underside and roughened matted faces 4, 13 is inserted between the contact glass of a copying machine and an original to copy a photograph of continuous gradation. As a result, light emitted from an original illumination light source (c) is reflected with the surface of the photograph (b) and the presence of the spots 2 converts photographic expression into copying dependent on sizes of spots. Diffused reflection caused by the matted face 4, 13 produces the differences of intensity of light, and an electrostatic latent image corresponding to the original is formed by projecting this diffused light on a photosensitive body and a copy is formed. Accrodingly, light can be controlled by the diffused reflection and continuous gradation, such as expression of a face, and a striped pattern of a coat, can be delicately expressed. |
