1. Presented by Michael Joseph, Peter Zaki, and Jay Yen

2.  1.Title 2.Table of Contents 3. Mission Statement 4. Stiffness the old fashioned way 5. Problem Statement: Innovation 6. The Importance of Stiffness 7. Screening matrix 8. Slides 8-11: Prototype ideas 12. Weighted Matrix 13.-14. Final Solution 15. Conclusion 16. Resources 1 7.Questions Table of Contents

3.   To enhance the printing capabilities of the iGEN4 printer by designing a sensing device that will detect the variable bending stiffness of an 8.5”x11” sheet of paper moving through a simple paper path at a speed of 250mm/s to 750mm/s.  The solution needs to be socially, economically, and environmentally sustainable. The Goal is to Measure Paper Stiffness

4.  Stiffness the old fashioned way Tensile Stiffness Bending Stiffness Equivalent stiffness

5.   Currently, the stiffness is measured by:  Using off-line samples  Done manually and slowly  Cannot provide feedback during manufacturing  There is a need for a device to measure stiffness in real time because the current process is time consuming and can be error prone. Innovation

6.   Pieces of paper with various stiffness change in travel time through the printer path. As they move through the printing path, stiff paper “cuts the corner” around a bend, while less stiff paper travels a farther distance.  Unaccounted differences in stiffness could be the difference between a registered image and an unregistered image. Stiffness Does Matter

7.  Selection Criteria modified film Sensor After First Roller Modular Component Above Simple Paper Path Ultrasonic Sensor after first roller Multiple Rollers Ease of Use++++ Cost of Production---- Manufacturability (technologically appropriate) -0+- Environmental Impact 000- Durability++++ Effectiveness+++0 Number of +’s3342 Number of 0’s1211 Number of –’s2113 Net+1+2+3 Rank3214 Continue?Yes No Screening Matrix Concept Variants

8.   Currently uses a dual Laser system to measure Properties of film. (thick- ness, width, etc.)  Modify dual laser system to calculate the change in thickness of the paper. Converted Film Sensor

9.   Scaled down version of the sensor made to measure the bending stiffness of an 8.5” x11” sheet of paper after the first roller. Ultrasonic Sensor after the first roller

10.   Ultrasonic sensor sits above paper.  Scaled down to measure An 8.5” x 11” piece of paper.  Measurement is completely automated. Modular component

11.   A series of rollers where the rollers act as the guiding baffle. Multiple Rollers

12.  Weighted Matrix Concepts modified Film Sensor After First Roller Modular Component Above Simple Paper Path Ultrasonic Sensor preceding first roller Selection CriteriaWeightRatingWeighted Score RatingWeighted Score RatingWeighted Score Ease of Use20%51.05 5 Cost of Production15%30.4540.6030.45 Manufacturability (technologically appropriate) 20%20.4040.8030.60 Environmental Impact 15%20.3030.4520.30 Durability15%20.3030.4520.30 Effectiveness15%50.755 5 Total Score3.204.053.40 Rank312 Continue?NoDevelopNo

13.  The Modular Component  A transducer sends a sound wave with a high frequency to a receiver.  The sound wave is distorted as it travels through a medium.

14.   The echo that is received is used to determine the distance between the sensor and the paper.  Knowing these values leads to the evaluation of stiffness. The Modular Component

15.   The Modular component:  Real time data to help prevent misprints  Relieves old method of measurement  Easy installation. No extensive alterations  Measuring and printing process completely automated Conclusion

16.   http://nanocpi.gatech.edu/carson/paper3.pdf http://nanocpi.gatech.edu/carson/paper3.pdf  http://sedtapp.psu.edu/design/design_projects/edsgn100/fa11/Xerox%20Project %20Statement.pdf http://sedtapp.psu.edu/design/design_projects/edsgn100/fa11/Xerox%20Project %20Statement.pdf  http://www1.eere.energy.gov/industry/forest/pdfs/laser_ultrasonics.pdf http://www1.eere.energy.gov/industry/forest/pdfs/laser_ultrasonics.pdf  http://sensors.lbl.gov/st_laser.html http://sensors.lbl.gov/st_laser.html  http://www.ndt-ed.org/EducationResources/HighSchool/Sound/ultrasound.htm http://www.ndt-ed.org/EducationResources/HighSchool/Sound/ultrasound.htm  http://picaxe.hobbizine.com/srf05.html http://picaxe.hobbizine.com/srf05.html Resources

17.  Questions Please feel free to ask any questions at this time.