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Background. Electrophotographic Printing (EP) test rig originally from Kodak P09503 modified for improved usability and automation LabView controls implemented for automation Has station for major steps: Charging, Exposure, Toner, Transfer Fusing occurs on a different rig

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Presentation Transcript
background
Background
  • Electrophotographic Printing (EP) test rig originally from Kodak
  • P09503 modified for improved usability and automation
  • LabView controls implemented for automation
  • Has station for major steps:Charging, Exposure, Toner, TransferFusing occurs on a different rig
  • Exposure step is performed with a negative. Cannot print file from computer.
  • Our Problem: Test pattern cannot be specified from computer
ep process part 1 of 2
EP Process (Part 1 of 2)

Stepper motor to turn screw to move carriage

Photoconductor carriage

Screw to move carriage

Negative

Charging Station

Exposure Station

ep process part 2 of 2
EP Process (Part 2 of 2)

Transfer drum

Tray for paper

Transfer Station

Toner Station

Fusing: On one of several other rigs, heat and pressure are applied to fuse toner to paper.

voice of customer needs
Voice of Customer - Needs
  • Accepts computer input to specify test pattern
  • Integrates into LabView software
  • Fits into 10"x15"x12" available space of current exposure system
  • Uses current stepper motor if motion is required
  • 1200*20±1 DPI Resolution (1200 DPI target, 600 DPI min)
  • Controls exposure time or intensity
  • Exposes a min area of the 5"x9" photoconductor
  • Built within budget ($2-3K)
  • Powered by available sources (wall outlet, current power supply)
moving forward possible solutions
Moving Forward - Possible Solutions
  • Xerox HiQ LED Print Head
  • Can achieve resolutions of 1200 x 2400 dpi
  • The LEDS selectively flash to create a pattern of dots on the photo receptor drum
  • Laser Printing assembly
  • Common laser printers achieve 1200 dpi
  • Laser scans photo receptor drum as it rotates, creating the latent image
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