Summary: I have read and tried everyone methods (dc controller, replacing toner, & adjust paper sheet type) of resolving toner leak. The answer to everyone's problem, is to " check & replace the the two black alienation plates (1.5" wide by 10" long, strips are vertical position, held by 2 phillips screws)" located on the back wall after removing all 4 toner cartridges. I found that the plate had cracked and didn't allow the toner to close properly.
Summary: I just got this printer as a second hand product for my personal uses around one month ago. The printing quality is good and acceptable. My office also has hp 4600 and hp 4650dn. But I feel that the one that I got is newer than my office. It 80% news as I see it. There are two thing that disappoint me only: 1. This printer support thick paper upto 160 gram only. What I expected is 300 grams. 2. This printer could not support A3 apper size.
Summary: When toner streaks and toner colors do not go away after replacing the catridge, its not the toner cartridge thats the probelm it the electronics inside the printer that controls the opening and closing of the toner catridge that needs repair/replacing. These electronics are generally not meant to be replaced by repair personnel and so the manufacturers don't maintain a supply of them to purchase for replacement.
Summary: I've had this printer for about a year now and it has been amazing. I work on private placements frequently and sometimes need to be able to print 100+ page documents at all hours of the day and night. This printer can crank them out amazingly fast, with great print quality and duplex printing to save paper. (I formerly used an old laser Multi-function device that printed at about 25% the speed, with no color, duplex or network connectivity - uggh!
Excerpt: "...to many lasers in the hp series this printer is your standard near-cube shape. It's around 45lbs in weight (taking 2/3 to shift it around the office so make sure that you know where you are going to put it). The dimensions are exactly the same as it's partner- the hp 4200 which I have also reviewed. These are 16.4 inches in width x 16.9 inches in depth and 14.4 inches in height. As I mentioned before, a near cube. The printer will match your standard ...
Summary: Vi parlo della Stampante Laser HP 4600. E' un ottima stampante sia in BN che a colori, cedisamente ingombrante per dimensioni (48x54x57) e peso (40kg) , ormai è abbastanza datata e sul mercato ne esistono di nuove molto più piccole spero che il mio capo si decida a cambiarla anche perché quando si devono stampare molto copie in successione tende ad incepparsi e si perde molto tempo per sbloccarla.
Summary: Mein erster Testbericht..... Ich habe diesen Drucker gekauft, weil er sehr robust und ausgereift ist. Die Folgekosten sind im Verhältnis zur Seitenleistung des Verbrauchsmaterials günstig. Er läßt sich mit einer vielzahl von Zusatzgeräten wie z. B. Speicher, Festplatten, Flashmodule u. ä. aufrüsten bzw. erweitern. Die eingebaute Dublexeinheit ist auch sehr nützlich.