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Anika Lohrentz, Alice Tang, Rexxi Prasasya, Chou Mai William Murphy – Advisor Greg Gion - Client.

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Presentation on theme: "Anika Lohrentz, Alice Tang, Rexxi Prasasya, Chou Mai William Murphy – Advisor Greg Gion - Client."— Presentation transcript:

1 Anika Lohrentz, Alice Tang, Rexxi Prasasya, Chou Mai William Murphy – Advisor Greg Gion - Client

2 Background Problem Statement Competition Design Requirements Design Proposals Design Evaluations Future Work

3 Prosthetic skin: covers amputations and large wounds Client’s Method Hand-paint mold Fill mold with silicone Cure silicone in oven Add external layer of color

4 Skin prosthetics colored manually Costs time, money, energy Goal: systematic method to mass-produce skin color http://www.prostheticskin.org/handprostheses2.htm

5 Rapid Prototyping Utilizes CAD generated image Time efficient for patients Skin texture not completely precise Color not yet explored www.newscientist.com

6 Pigments adhere to substrate Substrate- silicone, polyurethane, TPE Pigment- primary colors Safety- non-toxic and hypoallergenic Operation by one person Cost- under $500

7 Pad Printing Laser Printing Lithography Inkjet Printing

8 Three main components Cliché – etched plate with design Silicone pad Ink Uses applied force – transfer ink www.masona.co.uk/content/printing.htm

9 Pros User-friendly Versatile Variety of ink colors Easy to modify Uses solvent based-ink Substrate – higher surface energy than silicone pad Thin ink Cons

10 Electrostatic images on drum assembly Opposite charges transfer images to paper Fuser heats toner www.howstuffworks.com

11 Pros High speed Highly detailed and precise Toner binds to substrate High fuser temperature – above 200 0 C Routine maintenance Expensive technology Cons

12 Image converted to film and plates Ink-receptive coating activated Image offset to a rubber “blanket” Image transferred to substrate www.pneac.org

13 Pros Digital pre-press processing Separated fountain inputs Precise reproduction Mass production Cons Expensive One color per unit www.serif.com

14 Resistor or piezoelectric heater warms ink Ink drops onto surface of paper Plate feed printer for flat surfaces http:// www.thetechgeek.com/images/product_photos/03-C589011-EP.jpg

15 Pros Inexpensive Simple design Materials easy to obtain Less innovative design Color adheres to surface only Cons

16 CriteriaWeight Accuracy0.15 Feasability0.35 Durability of Process0.15 Durability of Color0.05 Useability0.1 Cost0.05 Safety0.05 Efficiency (Mass Production)0.1 Total1 LaserPad PrintLithoInkjet 9.57.5 9.0 5.39.08.310.0 3.87.37.810.0 9.07.0 6.08.5 9.0 3.58.34.07.0 6.58.88.58.0 7.05.89.37.0 50.562.060.867.0 6.18.07.99.1

17 Obtain materials for Inkjet Printing process Plate feed printer Compatible pigment Plasma-treatment setup Coating material for printer – nonstick Silicone Build and test process Upscale process for mass production

18 “Printing Process Description: Lithography.” Printers’ National Environmental Assistance Center. 2007. www.pneac.org “Copying Wrinkles for Better Prosthetic.” NewScientists Blog. Jan 2007. www.newscientist.com “Offset printing.” MM-Packaging. 2007. www.mm-packagin.com “Offset Lithography.” Serif Printing Resource. 2007. www.serif.com “How Laser Printer Works.” Tom Harris. 2007. www.howstuffworks.com

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