Like a tongue for computers, printer ink is the only way your electronic companion can properly communicate with the outside world. For $19, today's deal gets you $40 worth of ink and toner refills at Cartridge World. The more-than-20-year-old company is one of the world's biggest ink and toner retailers. Redeem this Groupon at one of two New York–area locations—either the West 35th Street shop or the Fresh Meadows store. This deal is valid for Cartridge World–brand ink and toner refills only.

Roy G. Biv-ify your printer with black or color ink for assorted printers, such as a lovely shade of magenta for a Brother DCP 130 ($9.99), or a cyan for a Canon photo printer IP-3600 ($9.99). Or put it toward a black toner cartridge for HP Q6470A ($53.99), a Dell 1100 ($49.99), and much more. Stop by either location to redeem your Groupon.

Reviews

Four Citysearchers give the Cartridge World Midtown location five stars. Google Mappers and three Yelpers give it an average of 4.5 stars:

• Nice people and low prices. I have tried those do-it-yourself ink cartridge refill kits and simply made a mess. Cartridge World will refill your cartridge, and the print quality is identical to a full-price new one! – shoppergal, Citysearch
• I've been a customer for about a year and I'm always pleased with the service and quality of the ink I buy. – Sarah C., Yelp