| 摘要 |
PURPOSE:To readily make forms into a book by providing a shutter means on the way of an image exposing light path and making toner adhere to the surface of an electrostatic latent image carrier in an almost belt shape. CONSTITUTION:As a normal image producing process, a positive, electrostatic latent image is formed on the surface of the electrostic latent image carrier 10, and normally developed with charged toner of polarity opposite from electrified polarity. Simultaneously, the shutter means 20 shields part of the image exposing light path, and the potential of the shielded part is moved to a developing device 12 with an electrified potential maintained. As a result, a part left as a high potential part is one corresponding, to the left edge of a form, which is bound afterward. The high potential part is developed together with an image part, and transferred onto the form. Thus, forms ejected from the image producing main device are overlapped heated and pressurized appropriately, whereby the nearly belt-like toner is fused to bind the sheets. |
