Unformatted text preview: when pressure is applied to it. Inside the slim cylindrical shell containing the pen’s tip is probably a tube of black ink, which secretes out through a very small opening on the tip. The hole is small enough to not leak ink when the tip is not in contact with a surface. 4. Inputs Product Function Output Paper Surface for ink to make contact with Writing/drawing Ink Liquid used to make mark Black writing/drawing Hand Apply force to direct ink writing/drawing 5. Visible Mechanical Components • Spring • Cap • Outer black shell • Inner silver and gold shell • Silver and black shell containing ink and pen’s tip 6. Hidden mechanical components • Ink • Inner plastic cylinder within cap • Inside of back end of black shell (opposite of cap)...
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- Fall '11
- American films, Pen, Golden Pen Company