1 From the secondhand account, the reader gets more background information about what the Oregon Trail was. 2  From the firsthand account, the reader gets a better understanding why it was so dangerous.
Printers generally age more by the number of pages printed rather than by pure years. The rule of thumb has always been whatever the recommended volume is (for instance 5000 pages per month for a P3005) multiplied by say five or six years so about 300,000 pages would be the life expectancy of the printer.
Customer Maintenance 1-3. Product Life (1) Printer Specified print volume (I) or the years of use (II), whichever comes first. (I) Print volume (II) Years of use PIXMA iP4000: 5 years of use (2) Print head Print volume: Adjustment Timing Purpose Tool Approx. timePrint head alignment At print head replacement.To ensure accurate dot placement. - Printer buttons-Computer (automatic settings via the printer driver) 3 min.ustomer Maintenance 1-3. Product Life (1) Printer Specified print volume (I) or the years of use (II), whichever comes first. (I) Print volume (II) Years of use PIXMA iP4000: 5 years of use (2) Print head Print volume: Adjustment Timing Purpose Tool Approx. timePrint head alignment At print head replacement.