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16 Products for the Brother MFC-7840W MultiFunction Center
You Are Here: >  Top >  Brother >  MFC - All-in-One >  MFC-7840W

BROTHER MFC-7840W TONER CARTRIDGE

Brother MFC-7840W Toner Cartridge (Extra Capacity - 2600 Pages)
  OVER 100
IN STOCK NOW

Price:  $16.89
Product Description
Toner Cartridge for Brother MFC-7840W MultiFunction Laser Printer.

This Toner Cartridge prints 2600 pages with an average 5% page coverage. The amount of pages can vary depending upon the amount of ink printed onto each page. (5% page coverage is a standard Brother specification)


This product comes with a 6 month Warranty against any defects (including free replacement). We stand behind our products 100%, as these are not manufactured by Brother.

Why toner? Why not call it ink? Regular ink dries quickly, which is why cartridges for inkjet printers do not last long. Laser Printers use toner, which is ink in the form of powder. A sealed toner cartridge can be stored for 2+ years prior to usage.

Product Manuals
How to Install a Toner Cartridge in the Brother MFC-7840W Multifunction Printer
The toner cartridge replacement procedure of your Brother MFC-7840W Multifunction Printer requires no more than 10 minutes for complete execution. There are no special tools or technical knowledge/skills required, and you should simply follow the instructions given below.

In the first step of the toner cartridge replacement, you must open the front cover of your printer by grabbing its handle and gently pulling towards you. Please note that the exhausted toner cartridge is installed into the drum unit of your MFC-7840W. Therefore, you must carefully pull the drum unit towards you and out of the printer, and then unlock the exhausted toner cartridge by pushing down the colored lock release lever. After that, you must take the exhausted toner cartridge out of the drum unit, but avoid touching the sensitive surface of the photoconductive drum which is located on the top side of the drum unit. Now, you must unpack the new toner cartridge, and then loosen the toner by shaking the cartridge 6-7 times horizontally. In the next step, you must remove the plastic cover which is protecting the cartridge's contact area, and then install the new toner cartridge into the drum unit. Please note that the toner cartridge is installed correctly only if it clicks securely into place, and if the colored lock release lever is automatically elevated/raised to locked/upper position. Once the new toner cartridge is securely attached, you must clean the primary corona wire of the drum unit by sliding the green cleaning tab to the end of the cleaning channel and back to its ''home'' position. Please note that the green tab should be moved along the cleaning channel at least 5 times, in order the primary corona wire to be optimally cleaned, and then the tab must be returned to its original position. In the final step of the replacement procedure, you must insert the new drum unit into the printer, and then close the front cover. Please note that you should avoid turning off the printer or opening the front cover during the automatic initializing procedure.
Sending a Fax from the Brother MFC-7840W

The Brother MFC-7840W’s fax mode can be entered by pressing the FAX button which is represented by a fax machine icon. The key will glow green when in fax mode. To send a fax:

1) Place documents FACE UP in the automatic document feeder.
2) Enter the recipient fax number via number pad.
3) Press the START button.


To send a fax via the document glass:

1) Place the document FACE DOWN onto the document glass and close the lid.
2) Enter the fax number via number pad.
3) Press the START button.
4) Once the first page is sent, a NEXT PAGE message will appear. Press 1 to send another page or 2 to finish.
5) If faxing another page, replace the current page with the next page on the scanner and press OK, repeating this process for each consecutive page of fax material.

When do I Replace a Toner Cartridge in the Brother MFC-7840W Multifunction Printer?
Your Brother MFC-7840W Multifunction Printer is equipped with a built-in system, which is constantly monitoring the installed toner cartridge. The main purpose of this system is to display an appropriate warning message once an abnormality is detected, in order to be avoided a non-operational printer mode. There are two warning messages, which are indicating a detected abnormality in the current toner level, and both messages are listed and described below.

1. ''TONER LOW'' appearing on the control LCD of your printer – The installed toner cartridge is nearly empty. You must install a new toner cartridge soon, in order to avoid a complete disabling of the printer's functions/operations.

2. ''TONER LIFE END'' is displayed on the control LCD of your printer – This error message indicates a completely exhausted toner cartridge. All printing operations will be disabled in this situation, and you won't be able to print new documents. The only available action is a new toner cartridge installation. You could easily replace the exhausted toner cartridge by following the replacement instructions given below.
BROTHER MFC-7840W DRUM
Brother MFC-7840W Drum Unit - 12,000Pages (MFC7840W Drum)
  OVER 100
IN STOCK NOW

Price:  $29.89
BROTHER MFC-7840W DRUM & TONER COMBO
Brother MFC-7840W DRUM and TONER COMBO
  OVER 100
IN STOCK NOW

Price:  $43.89
BROTHER MFC-7840W OEM DRUM
Brother MFC-7840W Drum Unit (OEM) made by Brother - Prints 12000 Pages
Brother OVER 100
IN STOCK NOW

Price:  $90.89
BROTHER MFC-7840W OEM TONER CARTRIDGE
Brother MFC-7840W Toner Cartridge (OEM) made by Brother - 1500 Pages
Brother OVER 100
IN STOCK NOW

Price:  $42.89
BROTHER MFC-7840W OEM TONER CARTRIDGE
Brother MFC-7840W Toner Cartridge (OEM) made by Brother - 2600 Pages
Brother OVER 100
IN STOCK NOW

Price:  $59.89
MFC-7840W OEM FUSER ASSEMBLY UNIT
Brother MFC-7840W Fuser Unit (OEM)
Brother

Price:  $93.89
MFC-7840W BEARING
Brother MFC-7840W Bearing for Ejection Roller (OEM)
Brother

Price:  $4.89
BROTHER MFC-7840W GEAR JOINT
Brother MFC-7840W Dev Gear Joint/53R (OEM)
Brother 10 IN STOCK NOW

Price:  $0.89
MFC-7840W SEPARATION RUBBER
Brother MFC-7840W Separation Rubber Assembly (OEM)
Brother

Price:  $10.89
BROTHER MFC-7840W ADF FEED ROLLER
Brother MFC-7840W ADF Feed Roller (OEM)
Brother

Price:  $11.89
BROTHER MFC-7840W SEPARATE ROLLER SHAFT ASSEMBLY
Brother MFC-7840W Separate Roller Shaft Assembly (OEM)
Brother

Price:  $10.89
MFC-7840W CASSETTE PAPER FEED KIT
Brother MFC-7840W Cassette Paper Feed Kit (OEM)
Brother

Price:  $13.89
BROTHER MFC-7840W ROLLER HOLDER ASSEMBLY
Brother MFC-7840W Roller Holder Assembly (OEM)
Brother

Price:  $11.89
BROTHER MFC-7840W MAIN PC BOARD ASSEMBLY
Brother MFC-7840W Main PC Board Assembly (OEM)
Brother

Price:  $92.89
BROTHER MFC-7840W PAWLED BUSHING
Brother MFC-7840W Pawled Bushing (OEM)
Brother OVER 50
IN STOCK NOW

Price:  $4.89

About My Brother MFC-7840W Multifunction Printer

Pages Per Minute
Cost of Consumables
Printer Resolution
Based Off 2504 Similar Printers


Brother MFC-7840W Review


Overview:

With built in wireless capabilities, the Brother MFC-7840W is a perfect way to add print, copy, scan, and fax functions to an entire household or small office without the need for cumbersome Ethernet wiring. This sleek, affordable unit carries all the functionality one would expect in a brother MFC and comes at a reasonable price.


Pros:

With both print and optical scan resolutions topping out at 600 x 2400 dots per inch, high quality monochrome print material can be produced by the Brother MFC-7840W. For even higher scanning resolutions, users have the option of using the device’s interpolated scan function which can execute up to 19,200 x 19,200 dots per inch, though at very slow scan speeds.

Fax speeds run high, however, with the Brother MFC-7840W thanks to the unit’s built in Super G3 33.6 Kbps fax modem that can transmit faxes at a rate of about 2 seconds per page. Other fax functions found in the device include auto dial to up to 208 locations and broadcasting to up to 258 locations.

Quick scanning, though it may sound like a type of input scan, is actually a very handy fax function that allows users to scan fax data into the machine’s memory without transmitting it live. This feature, in conjunction with the unit’s built in automatic document feeder, allows the printer to rifle through multiple pages of fax input faster than it can transmit, and then send through the modem at regular speeds, leaving the printer hardware open for other uses while the phone line is in use.

The built in ADF is also very helpful when making copies. With a paper input capacity of 35 pages, the Brother MFC-7840W can handle an entire stack of copy material on its own, while copying at up to 23 copies per minute. Reduction and enlargement functions are present in the copy machine as well in ratios ranging from 25 to 400%.

Scanning is not limited to monochrome like the other functions of the unit, and the Brother MFC-7840W boasts a solid input color depth of 48 bits. Exportable formats include JPG, TIFF, BMP, MAX, and PDF, among others.


Cons:

The Brother MFC-7840W’s print speed tops out at a mere 23 pages per minute. While this figure is substantial for a home office or single user, the printer itself is specifically designed as a shared device, leaving much to be desired in the area of raw performance. Due to the printer’s slow print speed that is combined with wireless print technology, the 7840W is designed almost exclusively for home usage, to be shared across a household of family members without any serious print volume demands.

The device also completely lacks expandability options. While most devices in the Brother MFC-7840W’s price range at least offer additional paper storage options, this printer is locked at its standard paper capacity of 250 sheets with no additional paper trays available. Memory, while sufficient at 32 MBs, cannot be expanded either due to a complete lack of an additional memory slot.



 

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