It was also HP's last black-and-white-only inkjet printer. The HP DeskJet 520 introduced resolution enhancement technology, or REt, to HP inkjet printers.
HP continued to make black-and-white-only inkjet printers with the HP DeskJet 510 (1992) and 520 (1994). It was replaced by the HP DeskJet 310 (4 ppm B&W, 4 minutes per page color) in 1993, the HP DeskJet 320 in 1994, the HP DeskJet 340 (2 minutes per page color) in 1995, and the HP DeskJet 350 and 350CBi (5 ppm B&W, 2 ppm color) in 2000. Meanwhile, HP introduced the DeskJet Portable (3 ppm) in 1992. The DeskJet 560C followed in March 1994, which introduced HP ColorSmart to intelligently analyze documents for the best color output. It was replaced by the DeskJet 550C in October 1992, HP's first dual-cartridge color DeskJet, offering a real black instead of mixed black ink in color prints, using both the 500C's cartridges at once. It was so successful that HP introduced a version of the DeskJet capable of color printing, the DeskJet 500C, in October 1991, which is also HP's first 300 dpi color printer, offering 4 minutes per page in color, using a swappable either black or CMY print head cartridge. Meanwhile, HP introduced the DeskWriter for the Macintosh in 1989, based on the DeskJet 500.īy 1987, the world's first full-color inkjet printer, the PaintJet, was introduced. The DeskJet 500 was introduced in 1990, offering a faster printing speed of 3 ppm. This was followed by the DeskJet Plus in 1989. It included a built-in cut sheet feeder, 2 ppm, and 300 dpi. In 1988, HP introduced the first DeskJet. HP began making inkjet printers with the HP Thinkjet (models HP 2225A and HP 2225B) in 1984. A modern HP Deskjet 2630 all in one printer History
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