1. Static Paper Bending Stiffness Measurement System By Group 7

2. Design Challenge  We chose the paper bending stiffness measurement challenge  Problem Statement  Currently within the Xerox’s iGen4 there is no device to measure the paper bending stiffness by the IGen4 itself. Xerox needs a reliable method of measuring the paper’s stiffness as it passes through the printer.  Mission Statement  To design an accurate, efficient device that can be used in iGen4; it must meet the needs and expectations of Xerox Company and must be self-contained with the IGen4.  Design Specifications  Design a device that detects the bending stiffness of an 8.5″×11″ sheet moving through a simple paper path.  The sheet should be moving somewhere between 250 to 750 mm/s. The paper stock stiffness needs to be measured within a tolerance of 100 millinewtons.

3. Brainstormed / Design Matrix Evaluation  Stack Bending System  Vertical lift of the paper stack  Laser System  Lowers to find height of the bend  Camera System  Takes a picture and calculates height of bend  Slot Based System  Paper would move through slots, giving a bandwidth of stiffness  Touch Sensor System  Paper lifts up  Went forward with the Laser System  (camera needed external light)

4. Prototype  Created a Solidworks Model  Got parts from Home Depot  Built this bad boy:  Foam board body  Wooden rollers  Painted interior  Counter balance support  Scale is pretty much 1 to 1

5. How it works  Paper moves off of the stack  Paper begins to bend  Laser is interrupted  Laser moves down  Laser gets the measurement  Bottom rollers adjust  Measuring device becomes just another part of the conveyor belt

6. Any Questions?