Notes from school
Primary school children have always brought home notes from school with messages about upcoming events or rules which could not be trusted to those fallible young memories. These days they are printed out in the school office on laser or inkjet printers, after having been typed up on a computer. It wasn't always so. Before these very handy and efficient printers there were duplicators, Roneo or Gestetner, bulky and often messy machines which used paper stencils which had been typed on a manual typewriter with the ribbon removed so that the keys would cut through the stencil. Before that there were the various types of gel copier. This is difficult to describe to anyone who has not seen them. Essentially messages were written on to coated paper with special inks. The paper was then pressed into a pad of gelatin like material to which the ink transferred. A sheet of paper was then pressed very carefully into the gel thus producing a copy. One copy at a...