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4 How HP LaserJet printers work
How HP LaserJet printers work
HP LaserJet printers use laser and electrophotographic technologies.
To print a page in a laser printer, the print media must be picked from
the input tray one sheet at a time and transported through the paper
path. While passing through the paper path, a scanning laser beam
writes an electrostatic image onto a rotating photosensitive drum. As
this image passes the developing station, a dry, powdery toner is
attracted to the imaged areas. In an HP Color LaserJet printer, this
process is repeated for each of the four toner colors.
The developed image then advances to the transfer station where the
drum contacts the paper or other print media and the toner image is
electrostatically transferred onto the paper. After transfer, the print
media passes through the fuser where heat is applied and the toner
fuses (melts) onto the print media. The print media is then delivered
to the output bin, ready for use.
To summarize, to create the printed image the print media must be
transported through the printer, charged electrostatically, and heated.
This is why print media properties such as electrical resistivity,
caliper, finish, moisture content, and stiffness can affect the print
quality and media-handling performance of your HP LaserJet printer.
Alternate sources of information
The media manufacturer and vendor can provide you with information
about the suitability of print media for an HP LaserJet printer.
If you have tried the suggestions outlined in this document and in
your user guide and you still need assistance, call the dealer from
whom you purchased your printer. You can also obtain support
through the worldwide network of HP Sales and Service Offices. (See
the sales and service listings located in any HP LaserJet printer user
guide.)
Visit HP’s website at http://www.hp.com
to find out more about your
HP printer and HP print media.