2. Application of Electrostatics
Electrostatic Paint Spraying
• Paint droplets from an aerosol
usually become charged by
rubbing against the nozzle of the
spray.
• Car body is earthed, paint
droplets will be attracted onto the
metal body.
3.
4. Application of Electrostatics
Electrostatic Paint Spraying
• Paint droplets repel each other
and spread out more evenly.
•Areas that are covered with
charged paint would create
repulsion to the fresh layer of
sprayed paint drops allowing better
dispersion of the paint coating.
7. During car
production, the
unpainted car body and
the paint are given
opposite electric
charges.
Unlike charges
attract, so:
› The paint sticks to
every corner of the
car body
› The paint covers the
car body evenly.
8.
9.
10. This machine allows
you to make
copies of printed
material.
Makes use of light,
heat and static
electricity.
11. (1) & (3) drum inside is charged. Light reflects an image
of document on drum. Dark areas (writing and images
on the original) retains a positive charge.
(4 & 5) Charged parts of the drum attracts the
negatively-charged toner ink (black powdered
particles).
(6) Toner ink transferred from drum to positively-charged
paper, producing a copy of original.
13. Inkjet printers work by spraying charged drops of ink onto a
page. The droplets can be directed using two oppositely
charged plates. The voltage on these plates can be easily
swapped or varied. The inkjet cartridge can also moved across
the page by the printer .
