Lexmark Return Program Cartridges are sold at a discount versus the prices of regular cartridges in exchange for the customer’s agreement to use the cartridge only once and return it only to Lexmark for reuse or recycling. Regular cartridges without this license/agreement sold at regular prices are also available. Regular cartridges are also recyclable at no cost through Lexmark Cartridge Collection Program.Average Continuous Black Declared Cartridge Yield up to 10,000 standard pages in accordance with ISO/IEC 19798. - These Lexmark supplies are designed to provide exceptional value, reliability and outstanding print quality. These supplies offer an easy front loading design with a simple, intuitive user interface. The only additional supply product necessary other than print cartridges is a simple waste toner container. - True: Accurate technology. Genuine quality. Environmental focus. It\'s our nature. - Image: Crisp print. Professional documents. Great Impressions. Project your character. - Always: Dependable. Page after page. Year after year. Count on Lexmark.