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ABSTRACT
Parameters on which clear prints depends were comprehensively investigated. The study revealed that clear print depends on the impressed pressure the working temperature and the gold foil print paper life expectancy.Also studies were he manner of dependence of these parameters on prints impressed on sheets of varied thickness. The results of these investigation were utizlied in the design and fabrication of an operational manual printing machine using gold foil sheet depositor clear prints were impressed on papers during the new machine’s operation.
LIST OF TABLESTABLE 1 – Experimental determination of pressure for printing 11- Effect of temperature on sharpness of print. 111 – Description of (components) parts and materials use for them 1v- comparison of cost and properties of materials LIST OF FIGURESDescriptionFigure 1 sketch of alternative AFigure 2. Sketch of alternative B.Figure 3 sketch of alternative CFigure 4 isomeric view of hot plate square housing Figure 5 isometric view of type holderFigure 6 &7 load and free body diagram of crank are (Handle) and rod. LIST OF SYMBOLSA – AreaA – AccelerationD – Maximum shaft diameterd- minimum shaft diameter e- efficiency k – Thermal conductivityc – Heat capacityx – The pressure transmissibility of lever system (press x 1/duration )t – Timel – Length of shaftm – Massm – Maximum bearding momentp – Electric powerq – Quantity of heat
TABLE OF CONTENTS
Title page iiLetter of transmittal iiiRelease ivApproval page vDedication viAcknowledgement viiAbstract viiiList of figures ix List of tables xList of symbols xiTable of contents xiiCHAPTER ONE 1.1 introduction 11.2 literature review and data collection 21.3 experimental determination of pressure for prating 31.4 design specification 9CHAPTER TWO2.1 Design solutions 112.2 Alternative A press foot printer 112.3 Alternative B; crank arm (handle ) 142.4 Alternative C; automatic (motorized) printer 172.5 Comparison of alternative and choice 20CHAPTER THREE 3.1 Design selection and analysis of parts of chosen alternative 223.2 Theory of design/ design calculation 243.3 The design of the shaft (Hollow) 26CHAPTER FOUR 4.1 construction of prototype 284.2 general 284.3 material selection 294.4 sequence of construction and assembly 40CHAPTER FIVE5.1 Testing of prototype (test – run) 405.2 Evaluation of machine efficiency 405.3 Operator’s manual 415.4 Costing (cost analysis) 425.5 Problems Encounter 455.6 Conclusion 455.7 Recommendation 46Reference 48
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