Xerox Phaser 3121 Toner Cartridges

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Printer Cartridge 

for the Xerox Phaser 3121 Toner Cartridges

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  1. Genuine Black Xerox 109R00725 Toner Cartridge (109R00725 Laser Printer Toner)
        Lowest online price guaranteed

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        If within 7 days of buying a product from us, you find the same product cheaper at any other UK online store, we will refund you with 100% of the difference.

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    18.35d per page

    Price per page

    This figure is based on manufacturer quoted values and is for comparison purposes only.

    It is derived from testing using the international ISO standard for printing (ISO/IEC 24711 and 24712). For most cartridges this means 5% coverage printed onto plain A4 paper.

       2000 pages

    Free next-day delivery

    In stock - order before 5:15pm to receive tomorrow

    Receive on:
    Wednesday 24th of July

    Royal Mail 1st class - 98% arrive next working day.

    Option 2: Guaranteed next-day

    Courier signed-for. Costs 50 QAR per order.

    Option 3: Guaranteed pre-12 next-day

    Courier signed-for. Costs 100 QAR per order.

    For more info, click the "Delivery info" link at the bottom of the page

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Xerox Phaser 3121 Toner Cartridges Printer Review

Expert review of the Xerox Phaser 3121 printer 18 February 2013

Our Verdict:

The Xerox Phaser 3121 monochrome laser printer is aimed at users who need a reliable personal printer that will not compromise their productivity. The black and white Xerox 3121 printer is praised for fast print speeds and versatile connectivity options, which makes it a little better than its predecessor, but Xerox failed to improve its expandability and resolution.


The clean and matte frame resembles a cubizoid bread box and follows a universal design for ease of use. The paper feeders of the Phaser 3121 include a 250-sheet retractable paper tray drawer and a single-sheet manual feeder with adjustable slots so different sizes of speciality media can be accommodated without skewing the paper. The simplified operator panel includes a power button and LED status indicator lights. Adjacent to that is the output tray. Connectivity options include parallel and USB. The Xerox 3121 laser printer runs on a 66MHz processor with 8 MB of RAM.


The print speeds of the Xerox Phaser 3121 black and white laser printer are up to 16ppm on A4-sized sheets and 17ppm on letter-sized paper. It offers two choices for connectivity for more versatility. The monthly duty cycle is 15,000 pages, and toner cartridges can last up to 3,000 pages. The Xerox 3121 Phaser can print on a good selection of media including labels, transparencies, and envelopes. Compatible Xerox Phaser 6121 toners come at a discounted price for lower running costs.


Print quality is mediocre and there are no expandability options available for the Phaser 3121 printer. It does not have networking and direct printing capabilities, which could be time-saving features for a growing office. The resolution of the Xerox Phaser 3121 mono laser printer is limited to 600x600dpi.