Friday, October 19, 2007
THE PRINTER :) History 1930 - IBM releases Model 01 electric typewriter
1938 - Chester Carlson invents xerography process
1948 - First prototype of photocopier by Battelle and The Haloid Co.
1951 - EAI develops analog flatbed pen plotter
1957 - Transfer printing discovered
1957 - Dye sublimation process invented
1959 - Haloid-Xerox releases first production-line automatic office copier
early 1960's - Stanford - developed technology for ink droplets using pressure wave patterns
1960's - Gerber Scientific produces plotters for printed circuit boards
1970's - Direct thermal printer
1973 - HP 9862A plotter released for 9800 desktop calculator
1974 - Stored energy dot matrix printer
1976 - Inkjet technology developed
1976 - First commercial laser printer
1977 - Seimens PT-80 uses drop-on-demand inkjet technology
1978 - Piezoelectric inkjet printer
1978 - First commercially sucessful dot matrix printer - Epson's TX-80
late 1970's - Ballistic wire dot matrix printers
1980 - IBM releases 5215 golf ball printer
1982 - Thermal wax printer
1984 - Thermal inkjet printer
1984 - First disposable inkjet cartridge
1987 - First color inkjet printer invented - HP Paintjet
What difficulties were faced before printers are invented?
-People can only use typewriter to type out words. They can't use printers to print the words out.
-People cannot print out the pictures.
-Without the invention of printers, no coloured pictures could be printed out.
Now-Advantage
1.People can print the ideal objects they want easily and conveniently.
2.Helps to save time.
Now-Disadvantage
1.They can use printers to print "dirty comments and pictures."
2.Wasting the time to install.
3.Inks must be changed on a regular basis which is expensive.
4.When printers are broken down,lots of money are needed to repair it,or you will have to buy a new one.
~END~
posted by dispairity at 7:10 PM
