| 摘要 |
PURPOSE:To adjust copying density and recording density to the same value, by controlling the recording density of electrical information signal from a reproducing device in accordance with setting of the copying density of an original image. CONSTITUTION:The bias voltage to be applied from bias voltage source PSB to development electrode P is changed by selecting switches S1, S2, and S3 in accordance with dark, medium, and light of the image to be copied in copy image density controller 10. In recording density controller 11 for controlling the luminance of an optical fiber tube, transistor switches Q4, Q5 and Q6 are turned on and off in accordance with transistor switches Q1, Q2, and Q6 to control the luminance of the optical fiber tube OFT, thus, permitting the record density of electrical information to be automatically changed in accordance with setting of the copying density of an original image, and uniform density record to be formed also in both compound records. |
