Resources Contact Us Home
Full color copying machine

Image Number 7 for United States Patent #5204729.

A full color copying machine which includes intermediate transfer medium whereon toner images having respective color components, formed on a photoreceptor are transferred to form one color toner image, and a screen filter disposed so as to be freely inserted or removed in or from a path of exposure light, which filters the exposure light for exposing the photoreceptor into a pattern of lines. A plurality of color toner images obtained by executing a plurality of copying processes based on a plurality of exposures applied to an original document are superposed on the intermediate transfer medium to form a color toner image. The copying machine further includes a screen mode for inserting a screen filter into a path of exposure light and a normal mode for removing the screen filter from the path of exposure light. Thus, exposures intended for low density components and high density components in an original document image are respectively performed by the use of the different modes, or they are respectively performed by changing setting conditions of the screen filter in the screen mode. With these arrangements, efficient application of the exposure device and high quality of the copied images can be achieved.

  Recently Added Patents
Hydrogen generation device and fuel cell system
Assigning runtime artifacts to software components
Memory interface circuit, memory interface method, and electronic device
Resistive random access memory cell and resistive random access memory module
Peered proctoring
FET device having ultra-low on-resistance and low gate charge
Catalysts for polyurethane coating compounds
  Randomly Featured Patents
Flash memory device with a retractable plug
Hydrocarbon-terminated polyether-polyamide block copolymers and uses thereof
Optical apparatus having image shake preventing function
Process for manufacturing a multi-layer circuit board
Vanity vest
Apparatus and method for supplying fuel to a gas-generating system
Lighting device designed to fit on a mounting, particularly textile
Coexistence mechanism for collocated WLAN and WWAN communication devices
Process for oligomerization of C.sub.2 to C.sub.10 normal olefins
Synthesis of cis-1,4-polyisoprene rubber