Brother TN630, TN660 Instructions Manual

BROTHER

®

HL-L2300 SERIES TN630/660

TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS

BROTHER TN660 TONER CARTRIDGE

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BROTHER HL-L2300 SERIES TN630/660 TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS

REMANUFACTURING THE BROTHER HL-L2300

SERIES TN630/660 TONER CARTRIDGE

By Mike Josiah and the Technical Staff at UniNet

© 2015 UniNet Imaging Inc. All trademark names and artwork are property of their respective owners. Product brand names mentioned are intended to show compatibility only.

UniNet Imaging does not warrant downloaded information. Unauthorized sale, reproduction or distribution of this article is prohibited. For additional support, please contact [e-mail]

www.uninetimaging.com

Released in July 2014, the Brother HL-L2300 printer engine is based on a new 27-32ppm, 1200 DPI laser engine. These machines
have a first page out in less than 8.5 seconds, and come standard with 8MB or 32MB of memory depending on the machine.
The HL-L2300 series also have duplexing built in. Our HL-2360 machine came with a starter cartridge, which is rated for 700
pages. The starter cartridge does not come with any reset gears.

There are two different toner cartridges available for these machines: the TN630 is rated for 1,200 pages, and the TN660 is rated
for 2,600 pages. The drum unit, which will be covered in separate instructions, is rated for 12,000 pages. There are different part
numbers for these cartridges depending on your region. They are as follows...

CARTRIDGE REGION STANDARD HIGH YIELD DRUM

North/South America TN630 TN660 DR630
Europe TN2310 TN2320 DR2300
Asia/Middle East/Africa TN2360 TN2380 DR2355
Oceania TN2330 TN2350 DR2325

Shown above is the toner cartridge with the developer roller cover.

CURRENT MACHINES RELEASED SO FAR FOR THIS SERIES

HL-L2300D HL-L2320D HL-L2340DW
HL-L2360DW HL-L2365DW HL-L2380DW
DCP-L2520DW DCP-L2540DW MFC-L2700DW
MFC-L2720DW MFC-L2740DW

BROTHER HL-L2300 SERIES TN630/660 TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS

There is a reset gear that resets the printer each time a new toner cartridge is installed. In our machine, the starter cartridge does
NOT have a reset gear installed. The TN630 and the TN660 cartridges use different reset gears. The TN630 gear has one
black flag, versus two white flags on the TN660. That is how the machine knows if there is a low yield or high yield cartridge
installed. New high yield and super high yield reset gears are available so that starter cartridges can be made into high yield or a
super high yield cartridge. Both the TN630 and TN660 cores are the same, so the low yield can be converted to a high yield if the
proper toner fill and reset gear is used.

Reset gears serve two purposes. First they reset the printer so it knows a new toner cartridge was installed. Secondly they tell the
printer which cartridge was installed. When the printer senses a new toner cartridge, the bias voltage is set to a high voltage.
As the cartridge is used, the bias voltage is gradually reduced. This process is necessary because (according to Brother) a new
toner cartridge has a tendency to print lightly. As the cartridge is used, the density increases. To keep the density level even
throughout its life, the density bias voltage is reduced accordingly. Each time a new cartridge is installed, the bias voltage is reset
to the high voltage point, and the cartridge page count is reset to zero. Since different yields would dictate different decreases in
density over time, Brother uses different reset gears, which tell the printer how fast to reduce the bias voltage.

NOTE: Starting with the HL-6180 series, there were some major changes in the way the toner cartridge AND the drum cartridge
works in this series. In case you missed it, we are covering the theory again...

NEW BROTHER PRINT THEORY

As with previous Brother cartridges, the waste toner is repelled off of the drum to be transferred to the toner unit, but the method
of how this works is now very different.

The waste toner is still transferred to the supply chamber, and this remaining toner MUST still be completely removed from
the supply chamber before adding new toner. Failure to do this will cause backgrounding. In addition to contaminating the
toner cartridge, this may also contaminate the cleaning section of the drum cartridge, which in turn will contaminate the toner
cartridge again. The reasons for this are explained in the following cartridge theory section...

The first new item in this engine is a paper-cleaning roller. This roller cleans off any extra paper dust before the printing process
even begins. It is located just after the paper-feed rollers.

The cleaning section of the drum cartridge no longer consists of a "cleaning brush" and is now a paired system of the cleaning
roller assembly and the transfer roller, but these rollers only play a minor part. The developer roller now has two functions.
In addition to transferring the good toner to the OPC for printing, it now also cleans off the majority of the waste toner from
the drum. This is done by a very complicated series of different electrical charges, and a series of directional changes on the drum
and developer rollers. The developer roller and drum change direction, and charge four times per full drum rotation. This is such a
complicated process that the printers actually have a rotation controller PCB with a microcomputer on it to control it all.

The cleaning roller cleans off any remaining toner that the developer roller did not remove. The transfer roller basically self-cleans
itself of any residual toner or paper dust that might have accumulated in the printing process.

When the drum is cleaned by the transfer roller the surface potential of the drum is dropped (from 900V to about 200V). At this
point the transfer roller and cleaning roller will release the waste toner to the drum. This waste toner is actually then charged by
the corona wire so that the developer roller can pick it up and bring it back into the toner hopper. Both rollers release the waste
toner at the same time. This was done to keep the print speed high, the power supply low, and the cost of the two rollers and
cartridges down.

The drum unit also now has a small waste chamber next to the cleaning roller. The reason for this waste area is for things such as
paper dust that does not transfer well. Since there is a paper-cleaning roller before the cartridges in the printer, this area in theory
should stay fairly empty. The metal roller next to the cleaning roller helps keep the cleaning roller free of anything that does
not transfer.

Since the developer roller now does most of the cleaning work, the condition of the roller while always important, is now much
more so. If the roller has any contamination on it from the toner additives (OEM or aftermarket), it will interfere with the cleaning
cycle and ghosting/backgrounding will result. If the cleaning roller gets contaminated and not cleaned properly the same problem
will result. The main culprit for this used to be the charge felt. It is now the developer roller. It is very important that the developer
roller be cleaned with a dedicated developer roller cleaner. Never use alcohol of any type, as this will strip the conductive coating
off the roller.

© 2015 UniNet Imaging Inc. All trademark names and artwork are property of their respective owners. Product brand names mentioned are intended to show compatibility only.

UniNet Imaging does not warrant downloaded information. Unauthorized sale, reproduction or distribution of this article is prohibited. For additional support, please contact [e-mail]

www.uninetimaging.com

BROTHER HL-L2300 SERIES TN630/660 TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS

Since the waste toner is transferred back into the supply of the toner cartridge - once you print with a bad toner cartridge,
the drum unit will become contaminated. Even when you change out the toner with a good properly recycled or new OEM cartridge,
the drum unit will transfer some of the bad toner back into the good toner cartridge, which will again cause backgrounding.
Both cartridges will be contaminated again - it can be a vicious circle.

The remaining "toner" in the toner cartridge, when toner low is reached, is just below the bare minimum that can maintain the
proper charge level. When the "change toner" light comes on, the toner will not charge up to the proper level and will cause
the backgrounding. As the toner cartridge reaches the end of its useful life, the printer senses the low charge level in the toner
supply and will try to keep the charge level up. This constant charging keeps an almost "empty" cartridge from backgrounding.
Once the printer cannot get the remaining toner up to the minimum charge, the "change toner" light comes on. The cartridge at
this point will still be printing properly. If you were to take that same cartridge out of the machine for a few days, and then put it
back in the printer without doing anything to it, the cartridge will background. This will happen because the charge level that the
printer was trying so hard to keep up has dissipated, and the materials left can no longer accept a proper charge.

WHAT DOES THIS ALL MEAN?

1. Make sure that your cartridge technicians thoroughly clean out the supply chamber of the toner cartridge.

2. Clean the developer roller with an approved developer roller cleaner (NOT alcohol - that will strip off the conductive coating)

3. In the event that they forget, and you have a backgrounding cartridge. The toner must be completely cleaned out again (do not
use the toner over), and NEW fresh toner MUST be installed.

4. Clean the developer roller (again) with an approved developer roller cleaner (NOT alcohol).

5. The drum unit then has to be taken apart and cleaned out with emphasis on the cleaning roller and transfer roller. This is a very
simple process but very necessary once it is contaminated.

According to our tests, there will be approximately 45-50 grams of toner left when the cartridge is spent. This is normal. The toner
left however, as stated above, is waste toner/paper dust only and must be thrown out or there will be backgrounding issues.

REQUIRED TOOLS

1. Toner approved vacuum

2. Phillips head screwdriver

3. Small common jewelers screwdriver

4. Needle nose pliers

REQUIRED SUPPLIES

1. Toner for use in the Brother HL-L2300 series of cartridges

2. Developer roller cover

3. Dedicated developer roller cleaner (NOT alcohol - see text above)

4. Lint-free cotton cloths

5. Toner magnet cloths

6. White lithium grease

© 2015 UniNet Imaging Inc. All trademark names and artwork are property of their respective owners. Product brand names mentioned are intended to show compatibility only.

UniNet Imaging does not warrant downloaded information. Unauthorized sale, reproduction or distribution of this article is prohibited. For additional support, please contact [e-mail]

www.uninetimaging.com