Canon Color Bubble Jet BJC-4550 User Manual page 122

Portrait orientation
Refers to printing across the width of the page (letter style). This is the
opposite of landscape orientation, which is printing across the length of
the page.
Print head
The printing mechanism that contains print nozzles and ejects the ink
for printing.
Print head capping
An automatic protection function that prevents the print head unit and
ink cartridges from drying out or becoming clogged with dust.
Printable area
The area of a sheet of paper on which a printer can reproduce text or
graphics (the printing area is smaller than the paper). On this printer,
the printing area varies depending on the type of paper being used.
Printer driver
Software that sends printing instructions to a printer. The printer driver
keeps track of the attributes of a printer and the codes the program
must send to access those attributes.
R
R A M
Random Access Memory. Printer memory that is used for temporary
storage of information you want to print and downloaded fonts.
Resolution
The density of dots for any given output device. Expressed in terms of
dots per inch (dpi). Low resolution causes font characters and graphics
to have a jagged appearance. Higher resolution means smoother curves
and angles as well as a better match to traditional typeface designs.
Resolution values are represented by horizontal data and vertical data,
for example, 360 360 dpi. This printer can produce output with
resolutions up to 720 360 dpi precision.
RG B
An acronym for Red, Green, and Blue; the three primary colors used in
the additive process to form a wide spectrum of colors.
G-5
Glossary