speed at which a printer outputs documents or disc has generally
been equated to the printer's engine speed. It suggests that,
if a user stood in front of a 6-ppm printer for one minute while
it was printing, 6 printed pages would come out. This may or may
not be the case as engine speed is just one of the factors that
affect printing speed. This also applies to CD printers.
printer's engine rating does not account for the time it takes
for instructions to be processed and transmitted from the CPU
to the printer. Nor, in many cases, does it account for the time
it takes the printer, once it receives the instructions to format
the document, to send it to the engine and output the first page.
In order words, a printer's rated engine speed does not necessarily
give a reliable indication of the time it takes to print a document.
It merely accounts for the speed at which the engine can move
paper or disc through the printer
printing speed, i.e. the printing throughput, will vary from job
to job depending upon the size and complexity of the document
to be printed and the efficiency of particular hardware and software
components involved in the process.
a typical standalone computer printing environment, the following
variables appear that can affect throughput speed:
and its printer driver
- printer I/O
- printer language
- engine speed
of the printer
The speed at which the CPU can run an application can have a tremendous
effect on the efficiency of that application.
The throughput-speed equation depends on the way a particular
software application formats a file to be printed. It also depends
on how efficiently the application's printer driver can format the
file and send it to the printer. The more efficient the driver,
the faster files can be sent to the printer.
The cable through which data is sent to the printer and the printer
I/O receiving the data also can make a difference in throughput
Printer language can affect the size of the print file and how much
downloading is needed. An efficient language will minimize file
size and downloading time and increase the speed at which the document
can be formatted for printing.
Controller The design of the printer's controller (or formatter)
traditionally has been one of the largest potential bottlenecks
to throughput speed. It determines how fast the received file can
be processed and printed. In order to minimize this bottleneck,
the printer should format a document and send it to the engine in
the time it takes the engine to warm up and move the paper or disc
through the printer.
The printer's engine speed will play a critical role in the overall
speed equation. After all, once instructions are received by the
engine, the printed document or disc can be outputted only as fast
as the engine can move paper or disc through the printer.