HP LaserJet 4 Service Manual - Page 101
Toner Cartridge
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Toner Cartridge The toner cartridge in your printer contains the printing mechanism and a supply of toner. Your toner cartridge life depends on the amount of toner your jobs require. When you print word-processed text, a toner cartridge lasts approximately 6,800 pages, printed at 5% coverage. (A typical business letter, as shown in Figure 4-2, is about 5% coverage.) This assumes that the print density setting is in the middle range (set to 3 in your printer's control panel). Figure 4-2 Example of a page having approximately 5 Percent Toner Coverage Preventive Maintenance 4-5
Toner Cartridge
The toner cartridge in your printer contains the printing
mechanism and a supply of toner.
Your toner cartridge life
depends on the amount of toner your jobs require.
When you print
word-processed text, a toner cartridge lasts approximately 6,800
pages, printed at 5% coverage. (A typical business letter, as
shown in Figure 4-2, is about 5% coverage.) This assumes that
the print density setting is in the middle range (set to 3 in your
printer’s control panel).
Figure 4-2
Example of a page having approximately 5
Percent Toner Coverage
Preventive Maintenance
4-5