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counterfeiting, cartridge makers will need to change the manufacturer ID field on their chips. Chip makers will need to
locate the manufacturer ID field within the applicable data structure and change the string of ASCII characters from
“HP” followed by 6 spaces to some other value – any value is acceptable, but HP recommends that manufacturers use
their own brand identifiers. Note that this field can be located in different areas in different chips. Putting any value
other than “HP” in this field will only change the display message the customer sees, and it will not impact print speed
or other core functionality. Please note that it is important to use the latest version of printer firmware to ensure that
chips perform as intended. If vendors encounter issues with their aftermarket chips not behaving as expected, they
should first ensure they are using the latest version of the firmware, which is available at
http://support.hp.com/us-
en/drivers/. HP supports a variety of ways by which users can update printer firmware, including using remote
solutions.
With the introduction of HP LaserJet printers and MFPs with JetIntelligence in 2015, additional protection was added
to further validate the authenticity of Genuine HP supplies. The inclusion of these new protections now requires two
fields in concert to identify whether a supply is Genuine HP or non-HP. The first field indicates the presence of a digital
signature and the second is the traditional manufacturer ID field from legacy products. Both of these fields must
indicate either an HP supply or a non-HP supply. Mismatches in this data will result in a supply memory error. Again,
like products introduced previously, the proper messaging of the supply brand will not impact print speed or core
functionality.
There are many printers in the HP installed base that support proper brand identification, as detailed below. In addition,
all HP printers launching in and after 2014 support this messaging. Chip makers are expected to make or continue to
maintain the necessary changes to enable proper identification of non-HP cartridges for the indicated platforms as
well as all new launches.
Benefits
Chip manufacturers that make or continue to maintain these changes will help verify their customers’ products are
respectful of registered trademarks and other rights as is guaranteed in many countries. In addition, those same
manufacturers will be able to validate that their products are not used to pass off counterfeit product. Finally, chip
manufacturers will be doing their part to help ensure that customers are able to identify and avoid counterfeit
products.
Roadmap
As it pertains to printers already in the installed base of HP printers, this messaging approach is and has been effective
for the devices listed at the end of this paper.
HP will continue to develop methods to protect its brand. The methods used to assure that a Genuine HP message
is delivered to a customer only when an HP supply is installed could change in the future.
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