Copying table is also called writing table, light-transmitting table, calligraphy copying table and movie reading table. In fact, the principle of the copy desk is very simple after all. Use light transmission on the back of the drawing paper, then copy the main contents of the previous one, and draw the next decomposition action on the new paper, so that the light transmission equipment at the back is very important.
On the projection platform, put a light source under the transparent glass and put paper on it. Theoretically, if the writing paper is opaque, the copybook can become clearer only by enhancing the light source or dimming or turning off the light source above the desktop. So as to achieve the purpose of convenient copying.