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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, Transfer Fusing occurs on a different rig

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Background

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Presentation Transcript

  1. 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

  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

  3. 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.

  4. Stakeholder Interviews

  5. 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)

  6. 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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