HP LaserJet 3100 All-in-One Printer series - Manual (Page 110)

EN 4 Printing 109
Recycling toner cartridges
To reduce landfill waste, HP has adopted a recycling program for
empty toner cartridges. A postage-paid shipping label can be found
inside your HP LaserJet toner cartridge box. Up to 95 percent of each
returned toner cartridge is recycled for use as raw materials in the
manufacture of new cartridges and in other industries. To join this
recycling effort, follow the instructions provided in the new toner
cartridge box.
Hints and help
In this section, find answers to commonly asked questions and
suggestions for getting the most out of your HP LaserJet 3100
product. See chapter 9, “Troubleshooting and Maintenance,” for a
more complete list of common print quality and usage problems and
solutions.
What If...
I want to use more than one of the HP LaserJet 3100 product
functions at the same time? This product is specifically designed to
allow you to do many tasks simultaneously, such as print while
sending a fax.
Jobs also queue and wait until another job finishes. For example, if a
fax is being received while you are printing, the fax is stored in
memory and then prints automatically after the print job finishes. Or, if
an incoming fax is being printed, you can start sending an outgoing
fax. The outgoing fax is stored in memory and starts transmitting
when the phone line is available. Only in rare instances will the HP
LaserJet 3100 product run out of memory and cancel one job so it
can complete another.
See “Simultaneous tasking features” in appendix A for a complete list
of which features can be used at the same time.
A paper jam occurs while printing? Once you have removed the
jam, the HP LaserJet 3100 product, in most cases, reprints the
jammed page and finishes the rest of the job. Once your print job has
finished printing, check to make sure all pages printed.