MANUFACTURING METHOD FOR LETTER BOARD OF TYPE PHOTO-COMPOSING MACHINE

摘要

The letter board includes silver salt emulsion layer(2) and light sensitive resin layer(3). A positive image (4) is formed on the emulsion layer(2) which is sprayed on a glass plate(1) and then colored-light sensitive resin applied on the emulsion layer(2). The resin layer(3) is exposed in direction of the glass(1) to light to cure the rest part(5) and then the non-cured part(6) is removed by washing. The positive image is bleached and desilverized to manuf. letter board(3).