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3D PRINTING
A Technology towards revolution

Contents
 Printers
 Types of printers
 Dot matrix
 Inkjet
 Laser
 Inkless
 3D printers
 General principles
 Applications
 Advantages
 Conclusion
 References

Printers
 Output Device
 First Printer in 19th Century by Charles
Babbage
 In 1980 Daisy wheel system like typewriter
 Low cost Laser printers invented in 1984
 By 2000 high quality printers are available
 In 2010 3D printing has become an area of
intense interest

Types of Printers
Printers
Dot
Matrix
Inkjet
Laser
Inkless
3D

Dot matrix
 Each dot is produced by a tiny metal rod called wire or pin.
 Up to 48 pins can be used to form the characters.
 It is also called line dot matrix printers.
 Capable of printing up to 1000 cps.
 Capable of printing 800 pages/hour

Inkjet
 First developed in early 1950s.
 Prints by propelling droplets of ink on print materials.
 Produces 64,000 to 165,000 droplets per seconds.
 They can print finer and smoother.
 Commonly used.

Laser
 In 1969 Gary Stark developed laser printer.
 First commercial implementation of laser printer was IBM3800.
 A laser beam projects an image of the page to be printed. Then
powdered ink particle are charged which is attracted onto paper.

Inkless
 Thermal printers work by selectively heating regions of
special heat-sensitive paper.
 Monochrome thermal printers are used in cash registers, ATMs,
gasoline dispensers and some older inexpensive fax machines.

3D Printers
 In 1981 Hideo Kodama of Nagoya municipal industrial research
institute developed first 3D printed model.
 Followed by Chuck Hull in 1984 named it stereo lithography.
 3D printable models can be created with computer aided design.
 The printers were originally large expensive and highly limited.

General Principle
Modeling.
Printing.
Finishing.

Modeling
Additive manufacturing takes virtual
blueprints from computer aided design (CAD)
or animation modeling software and "slices"
them into digital cross-sections for the
machine to successively use as a guideline for
printing.

Printing
To perform a print, the
machine reads the design and lays
down successive layers of liquid,
powder, or sheet material to build
the model from a series of cross
sections. These layers, which
correspond to the virtual cross
sections from the CAD model, are
joined together or automatically
fused to create the final shape. The
primary advantage of this technique
is its ability to create almost any
shape or geometric feature.

Finishing
Though the printer-produced
resolution is sufficient for many
applications, printing a slightly oversized
version of the desired object in standard
resolution, and then removing material
with a higher-resolution subtractive process
can achieve a higher-resolution

Applications
 Automobiles.
 Electric motors and generators.
 Art.
 Prototypes.
 Education.
 Healthcare.
 Faison clothing.

Advantage
 Print movable parts.
 Print items in remote location.
 Ability to send items over internet and print out at
home.
 Plastic used is strong.

Conclusion
3D printing is an expanding
technology which may soon start
an industry in which everyone
has the possibility of being a
manufacturer.
3D printing has a lot of possible
benefits to society, although the
products created must be
regulated.

Reference
 3D Printer Technology – Animation of layering. Create
It Real. Retrieved 2012-01-31.
 Hideo Kodama, “Automatic method for fabricating a three-
dimensional plastic model with photo-hardening polymer,” Review
of Scientific Instruments, Vol. 52, No. 11, pp 1770-1773, November
1981
 “3D Printing: What You Need to Know”. PCMag.com.
Retrieved 2013-10-30.
 “3D printing: Ultimaker 2 Review”. David Hana t. 2014-
11-07. Retrieved 2014-12-01.
 http://en.wikipedia.org/wiki/3D_computer_graphics

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