Patent ID: 6701101
Filing Date: 2004-03-02
Classification: G03G

Abstract:
A transfer efficiency enhancement method for enhancing a transfer efficiency by controlling a transfer voltage output from a transfer voltage generator through a pulse-width modulation command under the control of a microcomputer according to a transfer environment and a paper sheet recognition in electronic photograph development equipment, the transfer efficiency enhancement method comprising:recognizing the transfer environment by increasing the transfer voltage up to a predetermined value until a trigger is triggered before a sheet of paper is fed, according to an analog-to-digital conversion value of a fedback transfer voltage; switching the transfer voltage from the transfer environment to a leading end of the sheet of paper when the trigger is triggered; recognizing the sheet of paper by applying the transfer voltage determined through recognition of the transfer environment to the leading end of the sheet of paper, in order to perform recognition and transfer of the sheet of paper; and controlling the transfer voltage based on an output value from an analog-to-digital converter (ADC) which is obtained in a result of the paper sheet recognition, in which the transfer voltage is controlled to become a first state if the ADC output value is large, but the transfer voltage is controlled to become a second state different from the first state if the ADC output value is small.