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INSTRUCTIONS
HP-51641A, C1823, C6578, C6625  (COLOR)

Though the instructions provided are for all cartridges listed, the inks found in the are different.  Please make sure the ink you are using is for your particular cartridge.

For best performance it is recommended that you refill prior to running out of ink.
Damage to the print heads could result from running a dry cartridge.


IMPORTANT:
Use the guide to the upper right to determine your cartridge capacity.  This will determine the amount of ink used to refill the cartridges.  The amount you will use per color refill is under the column "Amount in CC per Refill".
 

BEFORE

Before  you get started here are some suggestions for getting the most from the  refilling process while maintaining a clean, usable work area.
Work close to or over a sink.  Wear rubber gloves  and place an adequate amount of newspaper over your work area.
Have prepared for use a cup of warm water and several  paper towels. Use filtered or bottled water.
Remove the cartridge from  your printer and place into cartridge clip. 

DO NOT touch the print head or contacts.

There are two types of cartridges manufactured by Hewlett Packard with a similar overall appearance.
The first, shown immediately to the right, is the Type C1823 (both the C6578 and C1823 use this type.).  This particular cartridge has the original ink injection holes located towards the front portion of the cartridge. 
The second, on the far right, is the Type 51641, which has the original ink injection holes located towards the middle of the cartridge.
Both cartridge types have color chambers in the same order.
Note the example images and the color order.  With the thumb-grip facing away from you the order is: Cyan, Magenta & Yellow.

Be careful not to touch the cartridge contact points (shown in light yellow).  These contact points are very delicate and can easily become damaged rendering the cartridge unusable.


THE REFILL PROCESS

Remove cartridge from printer and place into supplied cartridge clip.
Make sure print head is resting against the sponge material of the cartridge clip.

At the top of your cartridge you will see three perforated vent plugs.  These plugs are also known as 'vent hole plugs'.  Use the supplied 'pry tool' to push the perforated vent plugs into the cartridge.  This will allow you to access the sponge material inside.

Fill your injector with desired color ink to capacity as shown in the chart above.

Insert injector tip into desired color chamber as shown on the image to the right.  Insert the injector as far as you can.  Slowly withdraw injector about 1/8th of an inch.  Make sure the hub of the needle does not block air from coming out of the cartridge.

Slowly inject the ink into the sponge material.  It may take as long as 8-10 seconds to properly inject 1cc (1ml) of ink into the cartridge.
To get a more even distribution of ink you should slowly withdraw the injector as you are injecting the ink.

The cartridge sponge will be saturated when ink begins to come out from the vent hole.

At this point wait several seconds and the slowly remove injector from cartridge.

The cartridge must be allowed to vent to function properly. Place a piece of scotch tape or masking tap over the vent holes.  To ensure that the cartridge can breathe insert the needle tip into each vent hole.  Sealing the cartridge will cause cartridge to function improperly.


 

AFTER

Initially the cartridge  may release ink.  This is not common, but can occur.  Allow  cartridge to sit in sink or plastic container until it has stopped.   Do not place the cartridge on a paper towel or anything that might draw  ink out of the cartridge. 
DO NOT install your cartridge until the  cartridge has ceased releasing ink.
Once your cartridge has finished releasing ink, insert  into printer.

Test your printer.  If you see lines in your print  or incomplete print then perform several primer pages as described below.   We recommend 2-3 primer prints, though more many be necessary under some  situations.
Make sure your injector is thoroughly clean and all bottles are properly sealed before storing your kit. 


TROUBLESHOOTING

Initially the cartridge may release ink a few drops of ink.   This is not uncommon.  Allow cartridge to sit in sink or plastic container until it has stopped.  Do not place the cartridge on a paper towel or anything that might draw ink out of the cartridge.  DO NOT install your cartridge until the cartridge has ceased releasing ink.

Test your printer.  If you see lines in your print or incomplete print then perform several primer pages as described below.  We recommend 5-6 primer prints, though more many be necessary under some situations

Test your printer.  If you see lines in your print or incomplete print then perform several primer pages as described below.  We recommend 5-6 primer prints, though more many be necessary under some situations

With all of the generic cartridges on the market today it is very difficult to give an exact number of refills you can expect on 'all available' cartridges.  As a general rule if you are using refillable ink jet cartridge you should expect between 6-9 refills on a black cartridge.  OEM (Brand Name Epson) and cartridges with similar sponge material generally get  3-4 refills before the sponge begins to deteriorate. 

Due to nature of the sponge material, it is common that after six to nine refills that the sponge begin to deteriorate. There are many factors involved in why the sponge will deteriorate.  How long it takes is partially up to you.  Here are some guideline to protecting your cartridge and getting the most from it.
Refill the cartridge immediately upon running out of ink, or as soon as "blinking light" on printer comes starts.

Do not let cartridge sit out of a printer longer than necessary.  Too much air is not beneficial to the sponge material.

Expect the inevitable:  Cartridges will eventually cease to work.  Have an extra cartridge on hand.  All printer manufacturers recommend this as well.  It is just good practice to keep a new cartridge available at all times


WHAT TO KNOW

Due to nature of the print heads on HP cartridges, it is common that  after several refills that the cartridge components become fatigued and  cease to function.  There are many factors involved in why the cartridge  will fail.  How long it takes is partially up to you.  Here are  some guidelines to protecting your cartridge and getting the most from it.
Never touch the contact  points or print head of the cartridge.  Oil from your finger tips  will corrode the delicate surface.
Clean the contact points  with a Q-tip or soft coated cleaning cloth (such as those made for CDs).   Using distilled or filtered water is recommended.
Refill the cartridge before  it is empty.  HP cartridges use a heating mechanism to dispense  ink.  Running a dry cartridge for any extended length of time can  'burn up' the cartridge.
Expect the inevitable:   Cartridges will eventually cease to work.  Have an extra cartridge  on hand.  All printer manufacturers recommend this as well.   It is just good practice to keep a new cartridge available at all times
Never scrape the contact  points or print head area with any type of abrasive material.  This  includes paper towels, newspaper...


CLOGGED JETS

If your cartridge  has sat out of the printer for an extended period of time and you are  uncertain as to whether the cartridge will work due to clogged jets we  recommend the following procedure.
Wet a paper towel thoroughly (with distilled or filtered  water), fold and place in microwave for 20 seconds (just the paper towel--NOT THE CARTRIDGE)

Place cartridge print head on paper towel--DO NOT SCRAPE  CARTRIDGE ALONG TOWEL)
Leave on paper towel for a minute.
The hot water will break up caked ink and start the  capillary action working again. 
After the allotted time, place the cartridge on a dry  paper towel or non abrasive absorbent surface to dry the bottom of the  cartridge.  You may now attempt to refill or use the cartridge  (if ink is in the cartridge).


Primer Pages (Color)

Primer pages can be used to assist in clearing blockage in a print head, or simply for 'priming' the cartridge.  The purpose is to force ink, air and blockage out of the cartridge.
To create primer pages simple follow the instructions below.

Color Primer Page:  Using a paint or draw program create three blocks down the length of the page as shown in the diagram to the right titled 'Color Primer'.  Each of the block should be in the primary ink jet colors (Cyan, Magenta and Yellow)  Cover as much of the page as you can without overlapping colors.

To Use.  Just print the page!  Print as many pages as is necessary to get the ink flowing properly.

Please take note:  If you are concerned about wasting ink by printing primer pages, consider how much a new cartridge would have cost you.  Ink in bulk is cheaper than a new cartridge--and a cartridge that leaves lines isn't worth anything.


Primer Pages (Black)

Primer pages can be used to assist in clearing blockage in a print head, or simply for 'priming' the cartridge.  The purpose is to force ink, air and blockage out of the cartridge.
To create primer pages simple follow the instructions below.

Black Primer:  Take any painting or draw program and cover the surface of your page with a single large block of black.  The more surface that is covered on the page the better.

To Use.  Just print the page!  Print as many pages as is necessary to get the ink flowing properly.

Please take note:  If you are concerned about wasting ink by printing primer pages, consider how much a new cartridge would have cost you.  Ink in bulk is cheaper than a new cartridge--and a cartridge that leaves lines isn't worth anything.



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