Magnet System with Improved Efficiency
Original Publication Date: 1982-Jun-01
Included in the Prior Art Database: 2005-Feb-09
This magnet system can be used to fire hammers in printers with accurate hammer on time generation. Such accurate generation permits the hammer on time to be made shorter than the seal time, so that area 1 (Fig. 1), used for hammer firing and located below the magnetization characteristic, is increased over that occurring when the hammer on time exceeds the seal time. This improves the efficiency of the magnet system, because the current still flowing when the pulse applied to coil 2 (Fig. 2) is switched off is used for power transfer in this coil.