Abstract
AbstractThe function of the grain structure of a lithographic plate is examined in relation to the production of an image by a continuous-tone film. A theory is presented describing the mechanism of the partial distribution of light-hardened coating material on a grain surface, and is developed to provide a graphical method of constructing an ideal grain profile for facsimile reproduction. Negative and positive processes are considered, and theory shows that the ideal grain structure for facsimile reproduction is composed of a uniform distribution of precisely defined geometric units. Attention is drawn to two important conclusions of commercial significance, viz. whilst a uniform grain structure serves with advantage to increase the tonal range available for reproduction, this same factor introduces a possible disadvantage if moire effects must be considered.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
