My prints are of poor quality: white stripes / inferior colour.

If the cartridge is low on ink or empty, you can clean the cartridge a few times by running the cleaning program of the printer.

By clicking on the link, Guide for HP printers , you are redirected to the site with HP printers. Here you can select your printer from the list and then download the manual. The Manual Describes how to clean the print heads, how to align the print heads and how you can check the ink levels.

If you do not get immediate results, the cleaning program Should be repeated one or two times. If this does not help, you can do the Following:

A. Solution for cartridges without printhead

B. Solution for cartridges with print head

A. Cartridges without printhead (elongated cartridges)

These include: HP 364XL, 921XL HP, HP 931XL, 951XL HP

In case the cleaning program does not Provide the Desired result, remove the cartridge from the printer and follow thesesteps:

1. Make sure to use clean water (preferably distilled, tap water is allowed THEREFORE) and swabs.

2. The cartridge holder shows small strainers.

3. Use a wet cotton swab around the filter.

4. You Will See That the swab Absorbs the residual ink content and Assumes the color of the ink.

5. Repeat this process several times until the swab stops absorbing ink.

B. For cartridges with printhead (block cartridges)

These include: HP 20, HP 21, HP 56, HP 57, HP 300, HP 301
1. In case the cleaning program does not provide the desired result, remove the cartridge from the printer. Clean the copper-coloured area with a damp, lint-free cloth. Wipe the copper-coloured area.

2. Use your finger to lightly dab the tip of the cloth on the affected area, so the fabric absorbs a small amount of ink from the cartridge. This should unclog and free up the channels. Denatured alcohol is ideally suited, but you can also use household water if necessary.

3. Then dry the contact completely with a lint-free cloth. When dry, insert the cartridge back into the printer.

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