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HP LaserJet 4. The HP LaserJet 4 (abbreviated sometimes to LJ4 or HP4) is a group of monochrome laser printers produced in the early to mid-1990s as part of the LaserJet series by Hewlett-Packard (HP). The 4 series has various models, including the standard LaserJet 4 for business use, the 4L for personal use and the 4P for small businesses. [1]
While there are environmental benefits to refilling the toner cartridges of laser printers, a refilled cartridge may produce inferior print quality and reliability. [ 3 ] Refilling cartridges either by the end user, or as a service, is claimed by most printer manufacturers and toner remanufacturers to be harmful to both the quality and ...
A Hewlett-Packard laser toner cartridge. A toner cartridge, also called laser toner, is the consumable component of a laser printer.Toner cartridges contain toner powder, a fine, dry mixture of plastic particles, carbon, and black or other coloring agents that make the actual image on the paper.
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A HP color laser printer with its cartridge drawer open showing the four toner cartridges inside. Color laser printers use colored toner (dry ink), typically cyan, magenta, yellow, and black . While monochrome printers only use one laser scanner assembly, color printers often have two or more, often one for each of the four colors.
A California woman was fatally shot by her 2-year-old toddler, leading to the arrest of her boyfriend who is accused of failing to properly store the weapon, Fresno police said this week.
The LaserJet IIISi also was HP's first printer to offer onboard Adobe PostScript emulation as opposed to the font-cartridge solution offered on earlier models. [ 13 ] In October 1992, HP introduced the LaserJet 4 featuring a Canon EX engine with native 600-dpi output and Microfine toner for US$2,199.