InkJet and InkJet and Thermal PrintersThermal Printers
Inkjet IntroductionInkjet Introduction
InkJet Printing came about in the InkJet Printing came about in the late 1980’slate 1980’s
Have become the replacement Have become the replacement printer for the Serial Dot Matrix in printer for the Serial Dot Matrix in the homethe home
Two Main Reasons:Two Main Reasons: PricePrice Color capabilitiesColor capabilities
How it WorksHow it Works
Produce characters by squirting a precisely Produce characters by squirting a precisely controlled amount of ink onto the papercontrolled amount of ink onto the paper
Dots are extremely small usually 50-60 Dots are extremely small usually 50-60 microns in diameter (Human Hair approx 70 microns in diameter (Human Hair approx 70 microns)microns)
Dots are placed very precisely on the paper Dots are placed very precisely on the paper in a pattern up to 1440 x 720 dots per inchin a pattern up to 1440 x 720 dots per inch
Dots can be different colors and can be of Dots can be different colors and can be of photographic qualityphotographic quality
The PrintheadThe Printhead Printhead contains a series of Nozzles Printhead contains a series of Nozzles
that put the ink on the paperthat put the ink on the paper
Ink CartridgeInk Cartridge
Variety of cartridges depending on Variety of cartridges depending on the Manufacturer of the printerthe Manufacturer of the printer
Multi color in one cartridge Multi color in one cartridge Single color in one cartridgeSingle color in one cartridge Cyan, Magenta and YellowCyan, Magenta and Yellow Some cartridges include the Some cartridges include the
printheadprinthead
Heat vs VibrationHeat vs Vibration
Two basic methods of Two basic methods of printing using an inkjet printing using an inkjet printerprinter
ThermalThermal PiezoelectricPiezoelectric
ThermalThermal
Used mostly by Canon and Hewlett Used mostly by Canon and Hewlett PackardPackard
Also called Bubble JetAlso called Bubble Jet Tiny resistors create heatTiny resistors create heat The vaporized ink creates a bubble The vaporized ink creates a bubble
which pushes the ink onto the paperwhich pushes the ink onto the paper Typical Bubble Jet has 300-600 Typical Bubble Jet has 300-600
nozzles that can fire simultaneouslynozzles that can fire simultaneously
PiezoelectricPiezoelectric
Patented by EpsonPatented by Epson Uses Piezo Crystals at the back of Uses Piezo Crystals at the back of
the ink chamberthe ink chamber An electrical charge causes the An electrical charge causes the
crystal to vibratecrystal to vibrate Crystal vibrates inward forcing ink Crystal vibrates inward forcing ink
out of the nozzleout of the nozzle Typically 128 nozzlesTypically 128 nozzles
SpeedSpeed
InkJet printer are NOT known for InkJet printer are NOT known for their speedtheir speed
May be able to printer up to 16 PPM May be able to printer up to 16 PPM in blackin black
Usually takes a couple of minutes to Usually takes a couple of minutes to print a color pageprint a color page
Thermal PrintingThermal Printing
Two TypesTwo Types Direct Thermal PrinterDirect Thermal Printer Thermal Wax TransferThermal Wax Transfer
Direct Thermal TransferDirect Thermal Transfer
Printhead is a heating elementPrinthead is a heating element Special Paper that reacts to heatSpecial Paper that reacts to heat Head is passed over paper and Head is passed over paper and
heated at the exact moments heated at the exact moments required to form lettersrequired to form letters
First Faxes used Direct Thermal First Faxes used Direct Thermal PrintingPrinting
Now used in POS devicesNow used in POS devices
Thermal Wax TransferThermal Wax Transfer
Utilizes a wax based ink that Utilizes a wax based ink that adheres to the paper during the adheres to the paper during the heating processheating process
Wax Sheet is same size of paper Wax Sheet is same size of paper being printed onbeing printed on
A wax sheet for each colorA wax sheet for each color High quality but usually very High quality but usually very
expensiveexpensive
Printing ReviewPrinting Review
4 Methods of Printing4 Methods of Printing 6 Common parts of Printers6 Common parts of Printers Know which are impact printersKnow which are impact printers Know the parts of a laser printerKnow the parts of a laser printer Know specifics of each style of Know specifics of each style of
printerprinter Know history of printingKnow history of printing Know speed of different printersKnow speed of different printers
Printing Review Cont’dPrinting Review Cont’d
Know how characters are formed in Know how characters are formed in each method of printingeach method of printing
Know which printers can print Know which printers can print graphicsgraphics
Know quality of print from each Know quality of print from each printer typeprinter type
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