Magnuson-Moss Warranty Improvement Act
"(c) 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 the terms of the warranty) which is identified by brand, trade or corporate name; except that the prohibition of this subsection may be waived by the commission if: 1. The warrantor satisfies the Commission that the warranted product will function properly only if the article or service so identified is used in connection with the warranted product, and 2. the Commission finds that such a waiver is in the public interest.
What does this mean to printer users? This means that the manufacturer of the printer you are using cannot void the warranty on your printer because you use a cartridge or refill kit manufactured by someone other than the printer manufacturer. This prohibition includes the use of compatible cartridges, clip-ons, continuous feeding mechanisms, refill kits, ink, etc. The printer manufacturer is not required to make warranty repairs, however, to printers that have been damaged due to use of a product that they did not manufacture, co-manufacture or authorize for use in their products.