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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 silver print paper.   Also studied were the manners of dependence of these parameters on prints impressed on sheets of varied thickness.  The result of this investigations were utilized in the design and construction of a operational hot (manual) printing machine.

 

TABLE OF CONTENT

 

CHAPTER ONE

1.0     introduction

1. Identification of need
2. Purpose of the project
3. Definition

CHAPTER TWO

1. Literature review

CHAPTER THREE

1. Specification of components

3.1     expectancy

1. Choice of material and methods
2. Component parts

CHAPTER FOUR

4.0     theory of design/design calculations

1. Heating system
2. Mechanical system

CHAPTER FIVE

5.0     sequence of operation

CHAPTER SIX

6.0     machine handling

1. Assembly
2. Operation procedure
3. Maintenance
4. Repair

CHAPTER SEVEN

7.0     testing

1. Experimental determination of temperature time relationship
2. Discussion/recommendation
3. Mechanical efficiency
4. Conclusion

CHAPTER EIGHT

1. Cost estimate

8.1     material cost analysis

1. Machine/labour cost analysis
2. Summary of analysis

References

 

CHAPTER ONE

INTRODUCTION

1. IDENTIFICATION OF NEED

In recent years Nigeria lays strong emphasis on mass literacy and indigenous technology.  Printed matters are indispensable material in mass literacy campaign. The trend towards indigenous technology imposes a severe clamp down on imported engineering including printing machinery.  Thus, the situation is such that makes the acquisition of printing machinery from outside our own borders extremely difficult.

To lessen the economic strain on the mass literacy campaign, the production of local printing machinery I s apparently imperative.  It is this fact that rendered initiative to the conception and realization of this low cost but efficient printing machine based entirely on local technology and resources.

This machine is very useful in the printing of many items like paperbacks, cards, leatherbacks etc.  Its design is expected to motivate and advance the design and construction of other machines destined for similar purposes and based on indigenous technology and resources.

1.2       PURPOSE OF THE PROJECT

            Civilization and complexity of modern society has brought a number of social problems to be traced.

            The use of textbooks, printed materials such as success cards and posters has now become imperative for the overall dissemination of heart felt  feelings and messages to friends both near and far.

            Unfortunately, the prevailing economic pr oblem in the country (Nigeria) have sky rocketed the prices of these items.  Renders for example now rely solely on the libraries for up dating their knowledge.

            It becomes clear then, the need to equip the libraries to met up with the challenges of their services.

            Apart from refurbishing damaged books libraries are expected to render services such as printing of cards, printing and binding of students write ups like thesis, project etc.

            All this needs formed the basis for the construction of this machine because these functions cannot be performed without a printing machine.

 

 

1.3       DEFINITIONS

TYPES            -           These are the characters or alphabets

that form the letters

PRINT            -           This is the mark or impression produced

on pa per due to the types

SILVER SHEET

DEPOSITS     -           This is a thin rectangular

cellophane sheet coated with silver compounds.