The HP LaserJet 4240, 4250 or 4350 series printers are available in several configurations. The letters that follow the printer name indicate the differences between the configurations. Each letter refers to a specific feature. Use the information in this section to determine which features your model has.

Feature designations for the HP LaserJet 4240, 4250 or 4350 series printer

Letter	Description
no letter	This is the base model.
d	Models with this designation include a duplexing unit for automatic two-sided printing.
n	Models with this designation include an embedded HP Jetdirect print server for connecting to a 10/100Base-T network.
t	Models with this designation include an additional paper tray.
sl	Models with this designation include a stapler/stacker.

Model descriptions

Printer model	HP LaserJet 4240 and 4250 series	HP LaserJet 4350 series
Base model	48 MB RAM, expandable up to 512 MB one 100-sheet tray and one 500-sheet tray (LaserJet 4240 and 4250)
n model	64 MB RAM, expandable up to 512 MB one 100-sheet tray and one 500-sheet tray HP Jetdirect embedded print server for connecting to a 10/100Base-TX network (LaserJet 4240 and 4250)	80 MB RAM, expandable up to 512 MB one 100-sheet tray and one 500-sheet tray HP Jetdirect embedded print server for connecting to a 10/100Base-TX network
tn model	64 MB RAM, expandable up to 512 MB one 100-sheet tray and two 500-sheet trays HP Jetdirect embedded print server for connecting to a 10/100Base-TX network (LaserJet 4250 only)	80 MB RAM, expandable up to 512 MB one 100-sheet tray and two 500-sheet trays HP Jetdirect embedded print server for connecting to a 10/100Base-TX network
dtn model	64 MB RAM, expandable up to 512 MB one 100-sheet tray and two 500-sheet trays HP Jetdirect embedded print server for connecting to a 10/100Base-TX network duplexer for automatic two-sided printing (LaserJet 4250 only)	80 MB RAM, expandable up to 512 MB one 100-sheet tray and two 500-sheet trays HP Jetdirect embedded print server for connecting to a 10/100Base-TX network duplexer for automatic two-sided printing
dtnsl model	64 MB RAM, expandable up to 512 MB one 100-sheet tray and two 500-sheet trays HP Jetdirect embedded print server for connecting to a 10/100Base-TX network duplexer for automatic two-sided printing 500-sheet stapler/stacker output accessory (LaserJet 4250 only)	80 MB RAM, expandable up to 512 MB one 100-sheet tray and two 500-sheet trays HP Jetdirect embedded print server for connecting to a 10/100Base-TX network duplexer for automatic two-sided printing 500-sheet stapler/stacker output accessory

WARNING:

Power requirements are based on the country/region where the printer is sold. Do not convert operating voltages. This can damage the printer and void the product warranty.

Protecting the environment

Hewlett-Packard Company is committed to providing quality products in an environmentally sound manner. This product has been designed with several attributes to minimize impacts on our environment.

Ozone production

This product generates no appreciable ozone gas (O₃ ).

Energy consumption

Power usage drops significantly while in PowerSave mode, which saves natural resources and saves money without affecting the high performance of this product. This product qualifies for ENERGY STAR^® (Printers, Version 3.0), which is a voluntary program to encourage the development of energy-efficient office products.

ENERGY STAR logo

ENERGY STAR^® is a U.S. registered service mark owned by the U.S. government. As an ENERGY STAR partner, Hewlett-Packard Company has determined that this product meets ENERGY STAR Guidelines for energy efficiency. For more information, see http://www.energystar.gov .

Toner consumption

EconoMode uses significantly less toner, which might extend the life of the print cartridge.

Paper use

This product's automatic duplex feature (two-sided printing) and n-up printing (multiple pages printed on one page) capabilities can reduce media usage and the resulting demands on natural resources. (The automatic duplex feature is available only for models that include a built-in duplexer. Manual duplexing is available for all models. See Printing on both sides of paper (optional duplexer) .)

Plastics

Plastic parts over 25 grams are marked according to international standards that enhance the ability to identify plastics for recycling purposes at the end of the product's life.

HP LaserJet printing supplies

In many countries/regions, this product's printing supplies (for example, print cartridge and fuser) can be returned to HP through the HP Printing Supplies Environmental Program. An easy-to-use and free take back program is available in more than 30 countries/regions. Multilingual program information and instructions are included in every new HP LaserJet print cartridge and supplies package.

HP Printing Supplies Returns and Recycling Program Information

Since 1992, HP has offered HP LaserJet supplies return and recycling free of charge in 86% of the world market where HP LaserJet supplies are sold. Postage-paid and pre-addressed labels are included within the instruction guide in most HP LaserJet print cartridge boxes. Labels and bulk boxes are also available through the Web site at http://www.hp.com/recycle . More than 10 million HP LaserJet print cartridges were recycled globally in 2002 through the HP Planet Partners supplies recycling program. This record number represents 26 million pounds of print cartridge materials that were diverted from landfills. Worldwide, HP recycled an average of 80% of the print cartridge by weight, consisting primarily of plastic and metals. Recycled plastics and metals are used to make new products, such as HP products, plastic trays, and spools. The remaining materials are disposed of in an environmentally responsible manner.

• U.S. returns For a more environmentally responsible return of used cartridges and supplies, HP encourages the use of bulk returns. Simply bundle two or more cartridges together and use the single, prepaid, pre-addressed UPS label that is supplied in the package. For more information in the U.S., call 1-800-340-2445 or visit the HP LaserJet Supplies Web site at http://www.hp.com/recycle .
• Non-U.S. returns Non-U.S. customers should call the local HP Sales and Service Office or visit the http://www.hp.com/recycle Web site for further information regarding availability of the HP Supplies Returns and Recycling Program.

Paper

This product is capable of using recycled papers when the paper meets the guidelines outlined in the HP LaserJet Printer Family Print Media Guide . Go to http://www.hp.com/support/ljpaperguide to download this guide in .PDF format. This product is suitable for the use of recycled media according to EN12281:2002.

Material restrictions

This HP product does not contain added mercury.

This HP product may initially contain lead in solder that might require special handling at end-of-life. This product will eventually switch to lead-free construction in compliance with the European Waste from Electrical and Electronic Equipment (WEEE) law.

This HP product contains a battery that might require special handling at end-of-life.

Type	Lithium Carbon Monofluoride (BR1632), 3 Volt, button-style battery, 1.5 grams
Materials	Mercury-free, Cadmium-free
Location	On printed circuit board
User removable	No

For recycling information, you can contact http://www.hp.com/recycle or contact your local authorities or the Electronics Industry Alliance: http://www.eiae.org.

Material safety data sheet

Material Safety Data Sheets (MSDS) for supplies that contain chemical substances (for example, toner) can be obtained by contacting the HP Web site at http://www.hp.com/go/msds or http://www.hp.com/hpinfo/community/environment/productinfo/safety .

For more information

To obtain information about the following environmental topics, visit http://www.hp.com/go/environment or http://www.hp.com/hpinfo/community/environment/productinfo/safety .

• Product environmental profile sheet for this and many related HP products.
• HP's commitment to the environment
• HP's environmental management system
• HP's end-of-life product return and recycling program
• Material Safety Data Sheets (MSDS)

NOTE:

Any changes or modifications to the printer that are not expressly approved by HP could void the user’s authority to operate this equipment.Use of a shielded interface cable is required to comply with the Class B limits of Part 15 of FCC rules.

Laser safety statement

The Center for Devices and Radiological Health (CDRH) of the U.S. Food and Drug Administration has implemented regulations for laser products manufactured since August 1, 1976. Compliance is mandatory for products marketed in the United States. The printer is certified as a "Class 1" laser product under the U.S. Department of Health and Human Services (DHHS) Radiation Performance Standard according to the Radiation Control for Health and Safety Act of 1968.

Since radiation emitted inside the printer is completely confined within protective housings and external covers, the laser beam cannot escape during any phase of normal user operation.

Canadian DOC statement

Complies with Canadian EMC Class B requirements.

«Conforme àla classe B des normes canadiennes de compatibilité électromagnétiques (CEM).»

Japanese VCCI statement

Graphic of VCCI statement

Korean EMI statement

Graphic of EMI statement

Finnish laser statement

LASERTURVALLISUUS

LUOKAN 1 LASERLAITE

KLASS 1 LASER APPARAT

HP LaserJet 4250, 4250n, 4250tn, 4250dtn, 4250dtnsl, 4350, 4350n, 4350tn, 4350dtn, and 4350dtnsl -laserkirjoitin on käyttäjän kannalta turvallinen luokan 1 laserlaite. Normaalissa käytössä kirjoittimen suojakotelointi estää lasersäteen pääsyn laitteen ulkopuolelle.

Laitteen turvallisuusluokka on määritetty standardin EN60825-1 (1994) mukaisesti.

VAROITUS!

Laitteen käyttäminen muulla kuin käyttöohjeessa mainitulla tavalla saattaa altistaa käyttäjän turvallisuusluokan 1 ylittävälle näkymättömälle lasersäteilylle.

VARNING!

Om apparaten används på annat sätt än i bruksanvisning specificerats, kan användaren utsättas för osynlig laserstrålning, som överskrider gränsen för laserklass 1.

HUOLTO

HP LaserJet 4250, 4250n, 4250tn, 4250dtn, 4250dtnsl, 4350, 4350n, 4350tn, 4350dtn, and 4350dtnsl -kirjoittimen sisällä ei ole käyttäjän huollettavissa olevia kohteita. Laitteen saa avata ja huoltaa ainoastaan sen huoltamiseen koulutettu henkilö. Tällaiseksi huoltotoimenpiteeksi ei katsota väriainekasetin vaihtamista, paperiradan puhdistusta tai muita käyttäjän käsikirjassa lueteltuja, käyttäjän tehtäväksi tarkoitettuja ylläpitotoimia, jotka voidaan suorittaa ilman erikoistyökaluja.

VARO!

Mikäli kirjoittimen suojakotelo avataan, olet alttiina näkymättömälle lasersäteilylle laitteen ollessa toiminnassa. Älä katso säteeseen.

VARNING!

Om laserprinterns skyddshölje öppnas då apparaten är i funktion, utsättas användaren för osynlig laserstrålning. Betrakta ej strålen.

Tiedot laitteessa käytettävän laserdiodin säteilyominaisuuksista:

Aallonpituus 770-800 nm

Teho 5 mW

Luokan 3B laser