| 摘要 |
A method and apparatus for enhancing a transfer efficiency of electronic photograph development equipment, which enhances the transfer efficiency by controlling a transfer voltage output from a transfer voltage output end by a pulse width modulation command under the control of a microcomputer based on a transfer environment and a paper sheet recognition of the electronic photograph development equipment. The transfer efficiency enhancement method includes recognizing a current transfer environment by increasing a 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, recognizing a sheet of paper by applying a transfer voltage determined by recognition of the transfer environment to a 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 the 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 high if the ADC output value is large, but the transfer voltage is controlled to become low if the ADC output value is small. Accordingly, even if resistance of a sheet of paper is not detected or printing is performed in a paper sheet recognition section due to a skew of the sheet of paper, a transfer efficiency having a predetermined value or more, is obtained by using characteristics of an existing high-impedance transfer roller, and also the transfer efficiency can be enhanced by determining a transfer voltage variably according to the resistance of a sheet of paper in comparison with the existing high-impedance transfer method which determines a transfer voltage with only an environmental recognition at a transfer environment recognition.
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