The Hewlett Packard 78 (C6578DN-450 pgs) (HP 78 C6654BN-970 pgs) Color Ink Cartridge, large and normal size tri-color inkjet print cartridge produces outstanding images. Especially on plain or photo paper, photo-quality images on special media, exceptional resolution, and the best print quality in any print mode.

This is a result of HP's Photo Ret 3 printing technology which produces very fine image enhancements.

Prior to the instructions your about to review, allow me to provide you with the printer model numbers which will fit with this ink cartridge.

HP All-in-One Machines:

Officejet 5110
Officejet K
Officejet G
PSC 750
Officejet V
PSC 950 series.

HP Copy Machines:

Color Copier 190
Color Copier 280
Color Copier 310
Color Copier 180
Digital Copier-Printer 310
Color Copier 290

HP Fax Machines:

Fax 1230
Fax 1220 series.

HP Inkjet Printers:

Deskjet 1220
Deskjet 930c
Deskjet 6122
Deskjet 990
Deskjet 950c
Deskjet 9300
Deskjet 932c
Deskjet 920
Deskjet 970
Deskjet 3820
Deskjet 6127
Deskjet 960c
Deskjet 935c
Deskjet 940
Deskjet 995
Deskjet 952c series.

HP Photo Printers:

Photosmart 1218
Photosmart 1215
Photosmart P1000
Photosmart P1100
Photosmart 1115
Photosmart 1315 series.

Here are your Step-by-Step How-to-Remanufacture Your HP C6578D Instructions:

Lets get straight to the point, no beating around the bush during this lecture.

First, you will need the necessary Tools & Supplies Required:

Tools & Supplies Required:

Electrical Circuit Tester (tool)
Drill Press (tool)
Centrifuge (tool)
Atomization Machine
Filling Machine (tool)
Printer Tester or OEM Printer (tool)
Flush-Cleaning Machine (tool)
Toweling (supply)
Taping Machine (supply)
Purified Water (supply)
Replacement Plugs (supply)
Packaging Materials (supply)

Here you will also be provided with the OEM (original equipment manufacturer) information:

Hewlett Packard C6578A/D ink cartridge:

Part Number: C6578A/D
OEM Milliliter Load: 19 ml
Yield @ 5% coverage: 970 pages - 78A / min:9, 450 pages - 78D
Resolution: 2400x1200dpi (dots per inch)

Below are the 13 easy steps to know how to remanufacture your Hewlett Packard C6578A/D inkjet cartridge.

Step #1 Initial Cleaning of Nozzle Plates:

Each individual cartridge should be given a quick yet thorough cleaning of the nozzle plate and circuit tab at the beginning of the process.

This is achieved by directing the finest atomized spray onto the nozzle plate and circuit. The goal is just to remove any build-up of coarse, dried inks that would prevent an accurate visual inspection of the surface condition of the nozzle plate.

Targeting the circuit tab will enable an accurate electrical test. The atomized spray is roughly 44 degrees C (110 degrees F). Timing is approximately 6-8 seconds per cartridge is all that is usually required.

Step #2 Visual Inspection:

Now that the nozzle plates and circuitry have been cleaned and dry, the engineer must identify cartridges that may have loose or damaged nozzle plates, otherwise this will cause future headaches that are unnecessary.

With the use of a magnifying glass, your task will become easier, reducing your time frame. Immaculate shiny nozzle plates reflect the light from their gold plated colored surfaces.

You dont even need to be an expert to utilize those reflections to trace insignificant marks in the surface. Certain reflections can indicate a loose corner or an entire section when the reflective plane in one part of the plate is different from its adjacent parts.

Any cartridges that fails and does not pass this ruling, is discarded without hesitation. You probably will not find a way to fix a loose or damaged nozzle plate.

Step #3 Electrical Testing:

As for the electrical test, it continues to reduce the opportunity that any non-usable cartridges will be processed by subtracting those cartridges with electrical circuit failures. All that take part in this action should be disposed of.

Step #4 Drilling:

The path or access to the foams for both cleaning and filling is gained by drilling out the OEM (original equipment manufacturer) vent plugs.

The drilled holes are in the exact same location of the existing holes initially, although the drilled holes at approximately 4mm are quite larger. The larger the holes will be capped towards the final stage of the process.

Step #5 Flush Cleaning:

The reason for the flush cleaning procedure steps is to reduce each cartridge to an identical condition. All cartridges can be expected to react in the same way to the near subsequent filling operations, prior to.

The flush cleaning process involves descending a sharp edged needle within 2-3 millimeters of the three internal filter screens and allows purified warm water to flow continuously for 8-10 minutes.

Suction is not applied to the nozzles, and as for the content of water pressure, evacuates through the drilled top-vent holes.

The excess of water carries away virtually 100 percent of the OEM (original equipment manufacturer) regardless of how full or empty the cartridge chambers may have been.

Step #6 Nozzle Cleaning:

In order to thoroughly clean the nozzles, the atomized water stream is now directed with an accurate currency into all nozzle entrances at various angles.

The abundant flush cleaning and this nozzle atomization compliment each other well is the most effective and dominating cleaning method causing damage to the ink delivery system. Take this into consideration.

This close atomization cleaning process averages approximately 20 seconds per cartridge.

Step #7 Centrifuging:

Cartridges that have been flushed and cleaned-atomized are completely saturated with purified water. As a result, the removal of this water is addressed in the following two steps.

Centrifuging at 3,000 rpm removes the excess content of water through the drilled vent holes. This four-minute cycle has the potential to ease the magenta foam (center chamber) away from the filter screen.

As a precautionary measure, the cartridges are rotated at 180 degrees and re-centrifuged for an additional cycle. Even though no additional water is removed therefore no stress is put onto the nozzle plates.

Or even any foam that may have crept away is reseated into firm contact with the filter screens. Cartridges removed from the centrifuge may weigh in the 95-100 gram scale.

Step #8 Foam Drying:

The maximum weight for each cartridge before refilling is nearly 92 grams. Anything above this weight, the foams contain too much moisture.

Moisture will shift the foams hydrophobic quality toward the hydrophilic side, providing them to wick the new ink toward the top of the foams. Eventually this will render the cartridges to become inoperable within 48 hours.

Dry foams on the other hand, will prevent the capillary action and keep the ink place in the lower 1/3 of the foam. As for the final stage of drying, the foams are accomplished in the vacuum oven where the entire ink cartridge is placed within a heated vacuum environment.

Due to extended moisture levels, there is a pre-programmed system of evacuations and purges, in which the moisture content of all the foams is reduced to a more acceptable level.

Step #9 Vacuum Filling:

The nozzles must be taped in order to prevent air ingestion during the arrival to atmospheric pressure. The cartridges are then filled to approx. 13ml per chamber in a vacuum environment.

Ink is then slowly released, as close to the filter screens as possible, to ensure the complete saturation of the ink at the print head.

After the fill has complete, the vacuum release is controlled over the most important factors in the success or failure of these cartridges. For the most part, inks are available that have the correct characteristics for persistent along with consistent success in these cartridges.

After the cartridges have been refilled, they are then put to the side for about 12-15 hours before any print testing is accomplished. This time is mandatory so that the cartridges can have time for equalization.

Step #10 Print Testing:

The most responsive way to test your ink cartridges is to use an OEM (original equipment manufacturer) printer and test each finished ink cartridge.

A test print that begins with flooding of all the nozzles helps prime the cartridges to demonstrate accurate test results. You should get a solid thick line of black, cyan (blue), magenta (red), and yellow when print calibration has completed.

Step #11 - Replacement Vent Plugs:

Every cartridge that passes the print test will then receive three replacement plugs in the drilled access holes. The reason for the molded plug is so that it has more of an attracted appearance. This also takes place for the venting thats necessary for the proper function of the cartridge.

Remember, there are graduation classes of the three colors such as 90 percent, 89 percent, 70 percent, and so on. Quite a few failures of each color may not manifest until the 45-65 percent range. You should print the minimum of 2 full pages of graphics to ensure highest quality.

Step #12 Nozzle Sealing:

Since the print testing leaves an ink residue on the nozzle plate, it is critical that the residue is completely removed prior to the application of the blue sealing tape.

There is a machine called the Jet-Prep 550 that emits a mini burst of steam that is very effective when it comes to removing the excess residue of ink that remains on the nozzle plate exterior, which air dries in a few minutes to an impeccable clean surface.

Next, the blue sealed tape is adhered to the nozzle plate and due to the heat which helps soften the tape conforms to the shape of the print head and silicon encapsulations at either side of the nozzle plate.

Step #13 Packaging:

In order to complete this remanufacturing process you need to clean the outside of the cartridge, input a date code, replace the labels, and insert the finished cartridge into a newly designed professional looking box for retail purposes.

Congratulations, you have successfully completed the process on how to remanufacture your own Hewlett Packard C6578D inkjet printer cartridge.

Good luck and complete each cartridge as if it were your last. This information is provided to you to both educate and improve your knowledge in the technical area within the remanufacturing industry.