1 / 11

Transient Flow Visualization in a Lexmark Printer Project Sponsor: Lexmark International Inc.

Transient Flow Visualization in a Lexmark Printer Project Sponsor: Lexmark International Inc. Matt Casavant Nor Izzati Nordin Wan Afeek Wan Ali Guy Davis. Lexmark was launched in 1991 and the company is known for developing manufacturing, and supplying printing solutions.

blythe-garza
Download Presentation

Transient Flow Visualization in a Lexmark Printer Project Sponsor: Lexmark International Inc.

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Transient Flow Visualization in a Lexmark PrinterProject Sponsor: Lexmark International Inc. Matt Casavant Nor Izzati Nordin Wan Afeek Wan Ali Guy Davis

  2. Lexmark was launched in 1991 and the company is known for developing manufacturing, and supplying printing solutions. Divided into 2 divisions 1) Consumer Printer Division (CPD) 2) Printing Solutions & Services Division (PS&SD) Environmentally Conscious - Actively searches and uses environmental friendly products. Lexmark Corporate Background Information • Specific Engineering Contact • Mr. Kent Ubellacker (8 patents from 1997-2007 )

  3. Print Defect - Small ink droplets are blown away by the air flow of the print head as it moves left and right. - The small particle does not hit the target but instead creates “veins” (below) on the paper. Problem Statement

  4. Dirty Printer - Small liquid particles (1.1-1.5 nanograms) mix with air flow due to the print head movement and end up misting the inside surface of the printer. Problem Statement Continued

  5. Use the Vanderbilt water tunnel (thus choosing water as the fluid medium due to the ability to dye flow patterns) to study flow over a container to better understand the flow disturbances it creates. This will then allow for inconsistent print patterns such as veins to be corrected. Empirical Problem Statement

  6. Improve accuracy of inkjet printhead through slight print head shape change Improve visualization of air flows near the ejectors of the printhead Demonstration of how those air flows can be changed (study major drivers that create the situation) Some study of physical geometry or features which may help the problem(baffles, obstructions etc). Combine knowledge of Fluid Mechanics and trial and error observation to improve flow predictability Broad Project Tasks

  7. Present experimental procedure to Prof. Anilkumar Issues with mounting print head and carrier in water tunnel (consult TA) Attain image processing software and gain familiarity with it Carrier already in production; thus overall sizes and shapes can not be altered Determination of “add-on” material (considering hardening putties) Issues with simulating paper in water tunnel (boundary layer) Finding water tunnel speed in accordance with Reynolds number of print head in air Specific Tasks/Problems

  8. Image Enhancement Contrast Capture & Compare Matlab Image Processing

  9. Gantt Chart

  10. Needs Ink particles to hit target (accuracy) Veins to go away Clean printer (no small flying ink particles) Accomplished through laminar flow between printhead and paper Lack of change to basic structure of carrier Wants Inexpensive Simplicity in solution Less mess Environmentally friendly Easily manufactured

  11. Questions/Comments?

More Related