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
Network client validation of network management frames
Electronic system and method for compensating the dimensional accuracy of a 4-axis CNC machining system using global and local offsets
Vehicle exterior
Onium salt-containing polymer
State detection device, electronic apparatus, measurement system and program
Method and apparatus for detection of LVDT core fallout condition
  Randomly Featured Patents
Reducing gas generator
Method for a dynamic termination logic driver with improved slew rate control
Primers for analyzing methylated sequences and methods of use thereof
Mechanical shock-absorbing device
Printed circuit board, semiconductor package, card apparatus, and system
Micro-processor control of moveable slide stop and a moveable slide valve in a helical screw rotary compressor
Image processing apparatus, image processing method and transmission medium
Combustion of halogenated hydrocarbons
Vacuum cleaner exhaust filter with ion generation stage
Overlay image contrast enhancement