摘要:
This invention relates to a process for coating moulded plastic articles of thermoplastic polycarbonates or thermoplastic polyarylene sulphides with metal oxides, to the moulded plastic articles obtainable by the process according to the invention and to their technological application for outdoor use, for example for the production of coverings or facings in the building industry.
摘要:
An exposed color film having an exposed zone is provided with color areas prior to developing the same by exposing this unexposed zone to light passing through different narrow-band filters. After developing the film, the transmissivities of each of the color areas within a pair of narrow-band ranges is measured. The measured values are compared with known values for various types of film to establish the type of the particular color film. This information is used to adjust the exposures in the different colors when the images on the color film are copied onto a photographic copying material.
摘要:
The invention describes a process for coating a substrate with at least two layers, characterized by the following steps: a) applying a first layer comprising a first inorganic component to a substrate or to one of at least one layer applied to a substrate; b) treating the first layer with a plasma; c) applying a second layer comprising a second inorganic component to the first layer treated with plasma in accordance with b).
摘要:
This invention relates to synthetic resin bodies of thermoplastic polyarylene sulphides and/or of thermoplastic polycarbonates coated with zinc sulphide (ZnS).
摘要:
A method of determining correction parameters for adjusting the amounts of light to which originals are to be exposed in a color copying operation in dependence on the composition deviations of the respective original from a calibrating original involves establishing, for each of a multitude of regions of the respective original, two characteristic values respectively representative of a relationship between the blue and green color values, on the one hand, and the red and green color values, on the other hand, averaging those of the established characteristic values the relationships of which are within a distribution range normally encountered in an image of an object on the original, forming an average from the average values, and ascertaining the magnitude and direction of the correction parameters from the difference between the average obtained from the particular original and a like average obtained from the calibrating original. The regions into which the original is subdivided are successively scanned and the scanned area of each region is only a small fraction of the total area of the respective region. The method may be performed on a single original or on a series of originals.