Scan, edit, and share files remotely with HP Smart App best-in-class mobile print app. SEE ALL OFFICEJET PRO PRINTERS. Dynamic security enabled printer. Only intended to be used with cartridges using an HP original chip. Cartridges using a non-HP chip may not work, and those that work today may not work in the future.

HP Officejet Pro K550, K550dtn, K550dtwn Ink in stock, order from an HP Trusted Supplier, order today with same day shipping. Finding replacement items for your HP L7400 Pro OfficeJet All-in-One Printer just got easy. This page lists all available OEM, remanufactured and aftermarket Ink Cartridges,Printheads, and compatible items for HP L7400 Pro OfficeJet All-in-One Printers.

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14
.

If one or both the printhead lights still blink, repeat the cleaning procedure described above for
the printhead which corresponds to the blinking printhead light.

15
.

If one or both the printhead lights still blink, replace the printhead which corresponds to the
blinking printhead light.

16
.

Wait while the printer initializes the printheads and prints the alignment pages. If the printer does
not print the pages, start the alignment process manually (see

To replace the printheads

NOTE

To find out which printheads work with your printer, see

Open the top cover.

If the carriage does not move to the left automatically, press and hold (

Resume

button) for 3

seconds. Wait for the carriage to stop moving.

Lift the printhead latch.

Lift the handle of a printhead and use it to pull the printhead out of its slot.

Remove the new printhead from its package, and then remove its orange protective caps.

Insert the printhead into its color-coded slot (the label on the printhead must match the label on
the printhead latch). Press down firmly on the printhead to ensure proper contact.

Pull the printhead latch all the way forward, and then press down to ensure that the latch is
properly engaged. You might have to apply some pressure to engage the latch.

Close the top cover.

Wait while the printer initializes the printheads and prints the alignment pages. If the printer does
not print the pages, start the alignment process manually (see

Chapter 4 Maintaining and troubleshooting

ENWW

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HP Officejet Pro K550

Colour Printer series

The world’s fastest desktop colour business printer1 with Laser Quality Speeds up to twice the speed of colour laser printers2, plus up to 30% lower colour cost-per-page and up to 25% lower black cost-per-page than mono lasers3.

HP Officejet Pro K550

Colour Printer

HP Officejet Pro K550dtn

Colour Printer

HP Officejet Pro K550dtwn

Hp Officejet Pro K550 Printer

Colour Printer

This fast, economical printer is perfect for the small or micro business customer looking for fast, professional-quality, high-volume printing, and low cost of printing and ownership.

Make great savings with up to 30% lower colour cost-per-page than colour lasers3.

•Spend less producing professional, laser-quality colour documents for up to 30% lower colour cost-per-page than lasers – as low as 5.5 €Ct per page3.

•Print a wide range of business documents with sharp laser-quality black text for up to 25% lower black cost-per-page than

mono lasers – as low as 1.5 €Ct per page3.

•HP’s four high-capacity ink cartridges4 are designed for efficient ink usage so you save ink and money. Ideal for higher-volume jobs; just replace the ink colours you use.

Hp Officejet Pro K550 Service Manual

World’s fastest desktop colour business printer1 up to twice as fast as colour laser printers2.

•Conveniently and efficiently print professional-quality colour documents and graphics at time-saving speeds up to 10 ppm2, and black text documents at speeds up to 12 ppm.

•Bring proven HP performance into your office with breakthrough document inkjet draft mode print speeds of up to 37 ppm black and up to 33 ppm colour.

•Ideal for high-volume printing5 with very fast print speeds, high-capacity paper input trays and high-yield individual

ink cartridges.

Make a professional impression with long-lasting HP Vivera Inks and HP papers.

•Print laser-quality black text plus professional-quality colour and graphics using HP Vivera Inks.

•Have the reassurance of knowing that all your important archived black-and-white and colour documents will maintain their quality for decades without fading6.

•HP Advanced Paper and HP Vivera Inks ensure your documents can be handled confidently as they are water and smudge resistant.

1Compared to colour laser and inkjet printers under €500. Based on fastest rated speeds as published by manufacturers as of May, 2005. Test methods vary.

2Compared to colour laser printers under €500. Laser Quality Speed is an HP measurement method representing the print speed of typical office documents in default mode; compared to published colour speeds by laser manufacturers as of May, 2005.

3Cost per page (CPP) laser supplies comparisons based on published manufacturer specifications of the highest capacity cartridges available for colour laser printers under €500 and mono lasers under €250 as reported by Current Analysis, Inc. as of May, 2005. Officejet Pro K550 series CPP based on HP 88 Large Ink Cartridges (not included, sold separately) estimated street price and published yield. Results may vary.

4High-capacity HP ink cartridges not included; please purchase separately.

5Projected usage based on actual usage of similar products.

6Based on paper industry predictions for acid-free papers; colorant stability data at room temperature based on similar systems tested as per ISO 11798 and ISO 18909

Technical specifications

Print technology	HP Thermal inkjet
Print head nozzles	2112
Print speed	Document type	Draft	Normal	Best
(Up to # pages per minute)	Black text A4	37	12	5
Mixed text/colour graphics A4		33	10	5
Approximate figures – exact speed will vary depending on the print settings, system configuration, software program and document complexity.
Processor	MIPS 5KF 64-bit, 300 MHz
Print quality	Black: Up to 1200 x 1200 dpi; colour: up to 4800 x 1200-optimised dpi colour printing and 1200-input dpi
Colour technology	HP Photoret III
Operating systems compatibility	Windows NT®

Hp Officejet Pro K550 User Manual