Electrographic recording apparatus with delayed paper drive termination

Abstract

An electrographic recording system includes means wherein toner powder having electrical and magnetic properties is deposited on a recording medium, as a solid blanket of toner which is transported by the record medium to a recording station where selected portion of that toner coating is caused to adhere to the record member in a data determined pattern while the rest is collected by suitable magnetic structure at the recording station, then unto to a fixing station whereat the record data toner particles are permanently fixed to the record member. Alternatively, toner particles are transmitted to a recording medium by a rotating drum and, under the influence of electrodes thereat cause selective particles to be adhered to the record medium. The record medium then passes from such a recording station, again, to a fixing station whereat the toner particles are permanently fixed to the record member. In such systems, a control system for the operation of such apparatus, includes a time delay arrangement wherein at the termination of a recording cycle the recording signals are turned off instantly and a time delay is instituted which is a function of the paper speed and the relative distances on the record member between the toner deposit position and the fixing position. The time delay is effective to delay the cessation of the advancement of the record member through the fixing position until such time as all of the toner remaining on the record member has passed the fixing station.