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The HP Officejet 8500 Wireless All-in-One is a machine which does what it says on the tin: it prints, scans, copies and faxes. There is a built-in duplexer, which means if you are environmentally-conscious like me, or you just prefer reading double-sided print-outs, the days of manually flipping stacks of paper and trying to work out which orientation they should be in are gone. Printing is very fast - usually completed by the time I've managed to locate my stapler. The print quality is good for a printer of that cost, and I have found that the words bleed less than some other printers (Cannon IP100, some earlier HP inkjets) that I have owned. The bleed is probably unavoidable to a certain degree with ink printers, although I would certainly have expected much better in that regard given the price of this printer.
Ink economy is good - I have had the printer for over a year now and have only had to change the black cartridge once (I am a pretty heavy-duty printer, printing loads of journal articles for my studies). There are four cartridges - cyan, yellow, magenta and black. These come in the standard or heavy-duty variety. I recommend the latter, as it improves ink economy.
Copying and scanning are simple - just load the documents into the feeder tray and select the appropriate settings on the LCD screen. There are various options available, including black, colour, one-sided to two-sided, two-sided to one-sided, two-sided to two-sided etc. When scanning, there is the option to save multiple file types, as well as for some basic editing before saving. One small gripe I have is that the LCD screen is somewhat erratic when giving scan commands - I have ended up using my computer to select scan options. Its a minor pain.
Disadvantages: the printer is massive. I don't have the exact dimensions but you can find these on the Amazon listing. It is also fairly noisy and if you have a flimsy surface, expect a good degree of rattling from the printer. Also - HP has AWFUL customer service. One day, I found that the printer would not turn on. I called HP at 1640 on Friday, and despite advertised opening hours of 9-5, the technician refused to take my call - "we all want to go home, don't we, love". When I finally got to speak to someone on Monday, they were rude, unhelpful, and would not offer a replacement product until after two hours of arguing with various levels of management. Even then, when neither party could ascertain whether the printer or the power cord was faulty, HP refused to send both items out. They insisted that I choose either a replacement printer or power cord, each of which would take up to five working days to arrive.
In summary - the printer does everything it claims to. There are a few technical hiccups which don't impact performance massively, although given the price of the unit they really shouldn't be there. I would recommend it, although if you do purchase one, I hope you never have to deal with HP customer services.