Canon Pixma MP970
The MP970 features the PIXMA intelligent ink-management system and uses individual ink tanks for each color. You replace only the color that runs out rather than an entire multicolor cartridge. A red LED lights up when the ink tank is properly installed. The MP970 uses 7 color inks consisting of cyan, photo cyan, magenta, photo magenta, yellow, black inks and a pigment black ink. The pigment-based black ink is used to make laser-quality text.
The MP970 printhead employs Canon's FINE (Full-photolithography Inkjet Nozzle Engineering) technology. The 3,584 nozzle FINE advanced print head technology is one of the keys to the impressive speed and high photo quality in PIXMA photo printers. FINE technology uses a ground-breaking high-performance, multi-nozzle print engine that ejects consistent and microscopic (1-picoliter) ink droplets. Not only can the user replace the individual ink tanks, you can also replace the entire print head if necessary. (Replacement print heads are available from Canon Service after it is determined that a replacement is necessary.) Epson printers require a trip to the service center when they encounter a problem as the print head is permanently mounted.
Dual Color Gamut Processing Technology takes advantage of Canon's vast experience in office imaging equipment. By taking into account factors such as human vision characteristics and the type of print paper being used, this technology independently controls hue and brightness to achieve the same color balance as the original. Fully utilizing the color-reproduction capabilities of scanners and printers, Dual Color Gamut Processing Technology makes possible the creation of copies with rich gradation and minimal color difference.
Color development based on Canon's Color Management Technology, which incorporates human color preference factors, is reflected in the company's inkjet printers as "Canon Digital Photo Color." Through a wide variety of panel tests, Canon improved gray shades, contrast, and saturation, making possible vivid expression of skin tones and landscapes with low-chromatic colors pleasing to the eye.
Optical ink sensors automatically monitor all ink color levels and communicate with your computer, giving you a pop-up message indicating exactly what colors are running low. You can also check the status of the ink tanks at any time using the Canon Printer Utility as shown above in a Macintosh OS X 10.4 screen capture. Canon's optical low ink detection system prevents wasted printouts by notifying you via a Status Monitor before any ink tank becomes empty, so you'll never unexpectedly run out of ink in the middle of a job again.
A light beam shines through a prism located at the bottom of each ink tank. When there is sufficient ink, the light is detected by the sensor. When only about 20% of ink is left in any of the ink tanks, the light beam is refracted, triggering the sensor which tells the printer driver to display a low ink tank notification for that ink tank.