Compatible Replacement Chip for Oki ES3640 (non-OEM) 

The chip resets the toner cartridge, so you can refill it and use it for another lifetime.

Its compatible with the ES3640/e MFP models. 

There is a killer chip. It locks out and stops you printing. You must replace it each time you refill to reset the cartridge and restore full functionality.

Specific instructions included - Fits in place of the original in the chip holder on side of the cartridge. This is a radio-frequency chips without a physical connector.

Its for Europe region only.

Available for the Black, Cyan, Magenta or Yellow, or as a Rainbow Pack with each of the four colours.

Please note you also need the correct toner powder for use with this model. These are the chips only but toner bottles are available at TonerTopUp. The cartridge must be full of toner when you install the new chip or it will be useless.

Environmentally friendly!  Refilling cartridges saves raw materials, landfill waste, energy and CO2 emissions.

Save money! Refilling with high quality compatible toner and re-chipping gives excellent results and costs much less than buying an original cartridge.

Important! Ensure that your printer model, cartridge number and region match the details below.

• Product Name: Oki ES3640 Type Chip
• Compatible Models: ES3640/e MFP
• Cartridge No.: 42918928 Black, 42918927 Cyan, 42918926 Magenta, 42918925 Yellow 
• Page Yield/Capacity: Up to 15,000 pages Black and Colour at 5% nominal coverage
  
• Condition: New compatible
• Region: EUR| Learn more
• Function: Resets the toner cartridge to enable and refilling or re-manufacturing.