Heer Bommel en de opvoedering [8255] 

• 1975 
• 8255 
• Cliché Heer Bommel en de opvoedering 
• Drukplaat 

Strip 8255. From the first publication of the adventures of Tom Poes and Heer Bommel in De Telegraaf (1941) until sometime in the mid-1970s, the cliché (the metal printing plate) was used to print the daily strip. Explanation: a negative was made of a Tom Poes drawing. This negative was placed on a plate of metal to which a light-sensitive layer was applied. By exposing the negative, the light-sensitive layer hardens in those places where the negative is transparent; where the negative is black, the layer remains soft. The plate was immersed in an acid bath. The acid eats away those parts of the metal plate that do not have a hardened layer. These parts of the metal plate therefore become lower; they do not print because they are not inked. The high parts remain intact and print. A "Tom Poes cliché" is an original metal printing plate on which the drawn Tom Poes drawing was applied as a negative image (i.e. a mirror image), after which this printing plate was used to print the drawing.

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