HP LaserJet 1012:
HP designed the LaserJet 1012 for easy setup and use. The compact LaserJet 1012 measures 14.6 inches wide, 9.1 inches deep, and 8.2 inches high and weighs 13 pounds. This cheap printer arrives with a toner/drum cartridge, a printer-media input tray, a printer-priority input tray, and a power cord. Printer does not contain a USB cable. There are also printed instructions that clearly illustrate how to put the printer together. The installation CD includes a helpful user guide and a customization utility so that you can set network options and features, such as automatic duplex printing.
The printer is compatible with most Microsoft Windows programs (98, Me, 2000, XP, and XP 32-bit) and Mac programs (OS 9.1 and higher, OS X 10.1, and 10.2), but Linux users are out of luck. A simple two-button control panel on the front of the printer helps in printing a demonstration or configuration page, control manual-feed operations, or cancel a print job quickly. The three status lights (Attention, Ready, and Go) are also easy to read.
Most impressive, though, is the LaserJet 1012′s range of software features. The software allows you to print watermarks, such as confidential or draft, on documents and allows N-up printing, which prints up to 16 thumbnails of pages on one sheet of paper. This cheap printer also includes 133MHz processor and 8MB of memory which can’t be upgraded further. The LaserJet 1012 prints 12.42 pages per minute (ppm) of text and 12.49ppm of mixed text and graphics. Printed text is sharp and professional-looking. Test graphics also has even shading with no banding.
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Disclosed herein is an ink cartridge refill system for inkjet printers and a method of refilling ink cartridges using the system. The refill system includes a vacuum pump to supply ink from an ink tank into a cylinder and to forcibly draw ink from an ink cartridge, as well as an air compression pump to generate a compression force to inject ink from the cylinder into the ink cartridge through the nozzle of the cartridge. The cylinder is connected at the inlet end thereof to both the air compression pump and the vacuum pump, and is connected at the outlet end to both the ink tank and the ink cartridge. Both a compression pump line and a first vacuum pump line which pass through the cylinder are connected to the nozzle of the cartridge through an ink supply hose. The vacuum pump includes a second vacuum pump line directly connected to the ink cartridge, as is the first vacuum pump line passing through the cylinder. Both the ink supply hose and the second vacuum pump line are connected to the nozzle of the cartridge through a connection unit. The refill system can regulate the inner pressure of a refilled cartridge by removing predetermined small amounts of air and ink from the refilled cartridge, and can completely remove waste ink from the cartridge at the initial stage of a cartridge refill process when necessary.