ZOOM VARIABLE MAGNIFICATION CONTROL METHOD IN MICROREADER/PRINTER

摘要

PURPOSE:To quickly and exactly obtain a desired magnification by bringing the magnification proximate to the desired magnification by operating a switch subjected to variable magnification at every 0.1 time, thereafter, bringing a switch for a fine adjustment subjected to variable magnification at every 0.025-0.05 times, to switching operation. CONSTITUTION:A variable magnification operation at the time of a normal mode is executed by depressing an enlargement switch 4 or a reduction switch 5, and its method adops a mechanism by which the variable magnification is executed at every 0.1 times whenever the enlargement switch (or the reduction switch) is depressed once, and when the switch is depressed continuously, a zoom lens moves only during that time, and when the switch is released, the movement of the lens stops. In addition, by operating the switch for the fine adjustment subjected to variable magnifications at every 0.025-0.05 times, a desired magnification is obtained exactly.