| 摘要 |
1,165,166. Stereoscopic pictures. GENERAL ELECTRIC CO. Oct.12, 1966 [Oct.12, 1965], No.11025/69. Divided out of 1,165,165. Heading G2A. A three-dimensional picture is printed from a master on to an ink-receiving side of a transparent sheet in the form of interdigitated picture elements, the other side of the sheet having corresponding lenticular lenses formed therein. The picture is applied from an inked roller 30, and contains a large number of parallel picture elements prepared as described in Specification 1,165,165. At the same time a pattern of reference lines to establish the position of corresponding lenticular elements is formed on the other side of the sheet 28, which has a layer of a thermoplastic material such as a plasticized polystyrene. These lines may be formed in different ways. Thus a pattern of a liquid having one surface tension printed, by a roller 36, on to the surface of a liquid having a substantially lower surface tension will produce thickness deformations in the latter. On heating by a heating element 34, corresponding lenticular deformations are made in the thermoplastic layer. Another method of producing the pattern of reference lines is to establish them as lines of electrostatic charge, after which heating causes the thermoplastic layer to deform along the lines of charge. |
