Resources Contact Us Home
Full color copying machine

Image Number 5 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
Systems and methods for economic retirement analysis
Analysis device and an analysis apparatus using the analysis device
Helmet mandible
Method and apparatus for storing email messages
Recording medium, playback device, integrated circuit
Methods and apparatus to identify exposure to 3D media presentations
  Randomly Featured Patents
Magnetic disk drive and magnetic head slider with stabilized flying
Method for establishing a direct coordination link between a first and second control centre for carrying out services
Frame structure for an image forming device and frame assembly method
System for performing transactions
Antiinflammatory 4,5-diaryl-.alpha.,.alpha.-bis (polyhalomethyl)-2-thiophenemethanamines
Aerial cableway system and cableway cabin
Positioning apparatus and pressing apparatus
Information recording/reproducing apparatus having swingate levers for opening and closing shutter of cartridge in response to insertion and ejection of cartridge
Golf club head
Saccharide compositions and method of use