Question about HP Officejet Pro 8500 Wireless All-In-One InkJet Printer
I had the cartridge refilled today at Costco and the printer still says it is empty. Solution?
The HP 940 style cartridges have an inherent design issue that they collect air inside the black rubber pump. When enough air gets inside the black rubber cartridge pump they get soft/spongy - they must be firm (try pressing on it). The printer presses on the cartridge pump with a foot (gray plastic pad back inside the cartridge compartment) when it wants more ink to the printhead. If it presses and doesn\'t feel enough electrical resistance it thinks the cartridge is empty and errors "empty".
When a cartridge is truly empty, the black rubber pump will **** up inside itself, thus the foot does not feel any resistance. The only way to fix this is by occasionally remove the excess air from the cartridge pump. We recommend the AdaptiveInk Cartridge and Printhead Re-priming Kit. Yes, the Printheads also have an inherent design issue where they collect the air that is pushed from the cartridges. Excess air inside the printhead is what causes the majority of print quality issues you have when printing and this kit resolves this issue very well.
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Posted on Jan 02, 2017
Are you using a factory new ink cartridge?
If you are using a refilled or third party cartridge that may well be your problem. Most manufacturers build logic into their products to prevent the use of “Other Equipment Manufactured” cartridges as well as re-filled cartridges.
They do this to prevent problems from contaminated inks causing problems with print quality or damaging the physical printhead.
Posted on Nov 02, 2009
Go to www.inkjet411.com or www.costcoinkjetrefill.com for tips on how to get around this problem. The printer thinks it is an old cartridge. By resetting the printer it will sometimes fix the problem and let you use the cartridge. Can also use 2-3 cartridges in a rotation to trick the printer
Posted on Mar 23, 2010
By using refilled cartridges you will always have this problem. Each cartridge has a chip that lets the printer know when it is full or empty. By pressing the ok button you may be able to clear this message. However, most of the time you can still be able to print and ignore the message.
Posted on May 28, 2010
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