Do not leave inkjet cartridge outside printer as ink will dry and clog printhead nozzles. Use the inkjet cartridge quickly after it has been refilled.
 

There are 2 main causes for horizontal white lines to appear on your print out.

1) CLOGGED PRINTHEAD NOZZLES
Horizontal lines in printing may indicate that dried ink residues have blocked the printhead nozzles. This will cause poor printing.

2) "BURNT OUT" printhead nozzles
Inkjet cartridges have electrical resistors with a fixed value that control the current to each outlet jet. When the print head is over heated the resistance value changes permanently.

 The ink in the cartridge acts as a coolant to these resistors. However, when the cartridge is empty and you continue to print, overheating occurs. After much overheating, the resistance value will not be in the acceptable range and this leads to color distortion, weak printing or both.

 The life of the cartridge is diminished when the ink runs dry and the resistors overheat. Furthermore this limits the number of times the cartridge can be refilled.
 

Ink that dries up at the nozzles will clog the printhead. Remember it is important to refill a cartridge as soon as it begins to run out of ink. This prevents ink from drying and clogging the printhead nozzles. Do take note that the printhead is exposed to clogging once you start using your new OEM cartridges. Hence, regular printing will prevent the clogging of printhead too.
 

Prepare a shallow dish of warm water, about ¼” deep. Immerse the print head in the water for 10 to 15 minutes. Wipe the water off with a soft tissue or cotton swab before installing it back in the printer.
 

Discontinue printing when print quality deteriorates as this indicates low ink level. Avoid printing in a no ink situation as this will result in the resistors overheating which may damage the print head.

 Do not attempt to continue printing when printouts display white streaks, clean or refill the cartridge if necessary.

 It is important to refill a cartridge, as soon as it begins to run out of ink. This prevents dried ink from clogging nozzles and excess heat from causing them to "burn out".

Conduct a print head cleaning process.
 

Conduct a print head cleaning process.
 

Some of the nozzles may be clogged. Carry out clean head cleaning process.

Refilling should be done as soon as the ink runs low. It is even better if you start refilling earlier. Printing with an empty cartridge will cause the electrical circuits to overheat resulting in a damaged printhead.
 

Certain HP printers have a memory effect when a single cartridge is placed into the printer. Unless a different cartridge is loaded, the ink level registered will always remain in the driver no matter how many times you unload and reload the cartridge into the printer.

 This does not affect the quality or the functionality of the cartridge and the printer. The cartridge will still print normally even though the driver prompts the ink level is low.

 In such instance, the heavier weight of the cartridge after refill will confirm you have a full tank.
 

1. Dye-base ink

• less water resistant
• less fade resistant

2. Pigmented ink

• more water resistant
• more fade resistant

Yes. Because extreme temperature change will cause chemical reaction which affects the ink. See 4.2
 

Refilling means recycling your inkjet cartridge. Through refilling you could take advantage of the extended life of the print head. 

Refilling your cartridges is good for the environment and let you enjoy tremendous savings on your total cartridge expenditure. 

There are also substantial absolute savings as opposed to buying a new original cartridge.
 

You should be able to refill your original cartridge approximately 5 - 8 times depending on how well you maintain the cartridge.

The following is an excerpt from Magnuson-Moss Warranty Improvement Act (MMWIA) :

 “No warrantor of a consumer product may condition his written or implied warranty of such product on the consumer’s using, in connection with such product, any article or service (other than article or service provided without charge under terms of the warranty) which is identified by brand, trade or corporate name; except that the prohibition of this subsection may be waived IF (1) the warranted product will function properly only if the article or service so identified is used in connection with the warranted product, and (2) such waiver is in the public interest.”

 The above statement simply means that manufacturers are not allowed to void the written warranty given merely on the basis that the purchasers have used compatible articles or services of a third party UNLESS there is contrary evidence showing the damages then are caused solely by such articles or services. 
This is in line with the Principle of Exhaustion of Rights under the Common Law, namely once the products are sold, the consumers are free to deal with the goods purchased as they wish.
 

Definitely not. Fullmark guarantees that its products will perform as well as the OEMs' supplies under similar conditions.
 

OEM means Original Equipment Manufacturer. OEM refers to companies such as Hewlett Packard ( HP ), Canon, Compaq, Lexmark and Brother, the companies that actually manufacture your printer.