Ink & Toner Ripoff

Well really, does this come as a surprise?

http://www.slate.com/id/2198316/

I bought a cheap laser printer a couple years ago, and for a while, it worked perfectly. The printer, a Brother HL-2040, was fast, quiet, and produced sheet after sheet of top-quality prints—until one day last year, when it suddenly stopped working. I consulted the user manual and discovered that the printer thought its toner cartridge was empty. It refused to print a thing until I replaced the cartridge. But I'm a toner miser: For as long as I've been using laser printers, it's been my policy to switch to a new cartridge at the last possible moment, when my printouts get as faint as archival copies of the Declaration of Independence. But my printer's pages hadn't been fading at all. Did it really need new toner—or was my printer lying to me?
.....
OppressedPrinterUser found that covering the sensor with a small piece of dark electrical tape tricked the printer into thinking he'd installed a new cartridge. I followed his instructions, and my printer began to work. At least eight months have passed. I've printed hundreds of pages since, and the text still hasn't begun to fade. On FixYourOwnPrinter.com, many Brother owners have written in to thank OppressedPrinterUser for his hack. One guy says that after covering the sensor, he printed 1,800 more pages before his toner finally ran out.

Surprise!