How Do Thermal Printers Work

Thermal printers are totally different and distinct fromThere are newer thermal printers now that go through
your normal inkjet printers or even laser printers. Thesea different printing process. These newer models use
printers were introduced in the 1970s, the period inribbon cartridges (instead of printer ink cartridges). The
between the introduction of laser printers and inkjetribbon cartridges contain printer ink that is made of
printers to the world. Just as its name suggests,wax or resin or even a combination of both materials.
thermal printers use heat to print on paper, rather thanThis type of ink melts, when activated by heat, to form
the usual ink cartridges used by other types of printers.the text or images on the paper. These types of ink
It also has an interesting printing process that differscan also produce colored images using CMY or
from regular printers. This process is one that is usedCMYK colored panels.
by machines such as faxes, label printers, ultrasoundThermal printers are used for many different purposes
machines and bar code machines.and in many different ways. They are sometimes
Thermal printers contain four main components. Theeven more economical than printers that use printer ink
thermal head is the part that generates heats, whilecartridges, since most of these printers only need
the rubber roller that feeds paper is called the platen.heat-sensitive paper to print. The ribbon cartridges
These printers also have a spring, which puts pressureused by the newer thermal printers are also more
on the thermal head, which then makes it come inaffordable than regular ink cartridges. These printers
contact with heat-sensitive (or thermo-sensitive) paper.are usually found in cash registers, voucher printers,
They also have controller boards, which handles andfax machines and even ultrasound machines.
controls the mechanism. Newer models of thermalBut although these printers may be less expensive
printers use Ribbon Printer Cartridges instead ofthan their other counterparts, one disadvantage is that
normal printer ink cartridges to print.their printouts tend to fade over time. This is the
Older thermal printers require heat-sensitive or thermalreason why important receipts or documents printed
paper. This is inserted into the machine (between theusing thermal printers should be scanned or
thermal head and the platen). When activated, thephotocopied for posterity. The printouts of these
printer sends an electrical current, which causes theprinters are also of poorer quality than those from
printer to generate heat in a preset pattern. The heatinkjet and laser printers. Thermal printers still have a
of these thermal printers activates the heat-sensitivelong way to go before they become comparable to
layer of the paper when the paper is pushed by thethe print quality of inkjet or laser printers but they are
platen and a pattern of color (usually, black) emerges inpractical enough to be used for most businesses and
response.commercial applications.