Two-color image forming device

Abstract

Abstract PURPOSE:To obtain a two-color picture formation device for forming a dichromic picture consisting of black of high quality and an optional color forming a black toner image on the 1st photosensitive substance and a colored toner image on the 2nd photosensitive substance and transferring the black toner image and the colored toner image so as to superposed and positioned on the same transfer paper. CONSTITUTION:A two-color original on a platen 43 is irradiated by the 1st exposing part 25a, the 1st photosensitive substance is exposed to the reflected light to form the 1st electrostatic latent image and the latent image is developed as a black image by a developing device 14 and transferred to a belt-like intermediate transfer body 34. The optical image of an original exposed by the 2nd exposing part 27a is applied to the 2nd photosensitive substance 18, the exposed image is secondary charged with positive polarity by a charger 20 and a red corresponding part and a white corresponding part are inverted at their polarity and charged with positive polarity. The optical image of an original exposed by the 3rd exposing part 29a is applied to the 2nd photosensitive substance 18 to form the 2nd electrostatic latent image and the latent image is developed as a red image by a developing device 21 and transferred to an intermediate transfer body 34 by a transfer device 22 so as to be matched with the black toner image previously transferred and moved to a transfer area on the 2nd photosensitive substance 18. The toner images are transferred to transfer paper by a transfer device 39 and fixed by passing the transfer paper between fixing rolls 40a, 40b.

Inventors

• 👤 Sohei Shibazaki
• 👤 芝崎　宗平

Bibliographic Details