Marc Charbonneau: Change the status message of a HP LaserJet printer

This is an old trick, but always fun. It’s easy to change the status message on a networked HP printer; just telnet to the printer’s IP address on port 9100, and type the following:


Press enter, and you’re done; the new status message will stick around until you change it back, or someone restarts the printer.

If you want to put some effort into it, maybe make an agent to change the message at a random interval, you can also write an application to accomplish the same thing. See here for an example in C#.

Right now, my printer is complaining about a lack of ketchup…

How Laser Printers Work

Toner Basics

One of the most distinctive things about a laser printer (or photocopier) is the toner. It’s such a strange concept for the paper to grab the “ink” rather than the printer applying it. And it’s even stranger that the “ink” isn’t really ink at all.

So what is toner? The short answer is: It’s an electrically-charged powder with two main ingredients: pigment and plastic.
The role of the pigment is fairly obvious – it provides the coloring (black, in a monochrome printer) that fills in the text and images. This pigment is blended into plastic particles, so the toner will melt when it passes through the heat of the fuser. This quality gives toner a number of advantages over liquid ink. Chiefly, it firmly binds to the fibers in almost any type of paper, which means the text won’t smudge or bleed easily.

Source: Article by Tom Harris


HP has created a new type of toner that raises the bar on laser printing.

HP’s latest LaserJet printers aren’t exactly short of headline features. They’re smaller, faster, more energy efficient, and up to 50 per cent quicker than the previous generation when it comes to printing out the first page. The new LaserJets feature JetIntelligence Toner cartridges that yield more pages than ever before, yet the most exciting thing about these printers isn’t the biggest, but the smallest: the tiny particles of toner inside each and every cartridge which make all this good stuff happen. In its most revolutionary move since 2005, HP has rebooted the chemistry of toner with ColorSphere 3.

How Toner Works

First, a short primer on how toner moves in the cartridge. In your typical laser printer, a negative charge is applied to the cylindrical drum to prepare it for a laser beam.  The laser strikes the drum surface, creating – one line at a time - a less negatively charged latent image. When the negatively-charged toner is transferred to the more positively charged areas exposed by the laser, a final image in toner is developed on the drum.

The toner is then transferred from the surface of the drum to the paper, by a transfer roller.  This applies a positive charge to the underside of the paper, which attracts the negatively charged toner from the drum, pulling the toner image onto the paper. With the toner held in place electrostatically, the paper is passed through to the fusing unit within the printer, where the toner is permanently fixed through heat and pressure.

As a system, electrophotography is incredibly effective, which is why it has powered everything from the first photocopiers to the modern colour laser printer. Over the last twenty years we’ve seen innovations with colour laser technology, often lead by HP. We’ve seen speeds increase from less than one page per minute to over fifty pages per minute, and prints evolve from simple 300dpi monochrome to photo-quality 2,400 x 1,200 dpi colour. Yet further progress is held back by two issues: the tendency of toner particles to degrade in quality over time, and the amount of heat required to fuse the toner to the paper.

Breaking down the barriers

Why are these issues? Well, in ordinary toner, the structure of the particles can break down over time.  As particles circulate inside the toner cartridge the outer shell can wear and chip. As this happens, print quality and page yields may be sacrificed. To combat this, more toner may be provided in the toner cartridge to ensure quoted page yields would be met and print quality maintained. This additional toner never makes it to the paper. Instead, it’s used to support the wear of the toner over time.

And the heat and energy? First, fusing toner to paper takes a lot of heat and pressure, and the faster the paper moves through the mechanism, the more heat is required. This increases both the time the printer takes to warm up and the energy it consumes during printing.

A breakthrough for toner technology

The product of more than five years of development, HP’s new ColorSphere 3 toner formulation attacks both problems. With ColorSphere 3 toner, a soft core of wax and polymer is held within a protective durable outer shell. As the spherical toner particles circulate and collide, this outer shell remains intact, protecting the toner from deterioration. Yet, because of the soft core of wax and polymer, this new tougher toner also requires less heat to melt.

In other words, you have toner that doesn’t deteriorate with time, and that also melts faster using less energy. What does this mean in practice?

  • Higher page yields and more value Because the toner is more durable, the additional toner used to compensate for the wear is now being used to print more pages. HP’s new Original Toner Cartridges with JetIntelligence can produce up to 33% more professional-quality prints than previous generation cartridges. With the high capacity cartridges, the price you pay per print goes down – and you don’t have to replace those cartridges so often, either.
  • Faster first pages Because the ColorSphere 3 toner is low melt, the fuser unit takes less time to – literally – warm up, HP’s latest LaserJet printers deliver the first page of a print job faster. In fact, they’re up to 40 percent faster to print the first page after waking from sleep than previous LaserJet printers, with the new LaserJet Pro M252 offering the fastest first page out in its class.
  • Smaller printers Less energy and less heat mean less space required for the fuser unit and for cooling, which in turn means smaller printers overall.  As a result, the latest LaserJets have a footprint up to 40 percent smaller than their predecessors, and could actually fit wholesale inside the older models’ shells.
  • Count on the HP reliability HP’s printers have always been reliable, and this continues with the introduction of ColorSphere 3 toner. HP has looked at every element of the cartridge design and the printer mechanisms to optimise them for exceptional performance. This means LaserJet printers can take any reasonable office workload in their stride with fewer cartridge interventions.
  • The same great quality HP formulated ColorSphere 3 toner delivers all these advantages without compromising what matters most: professional print quality. Prints made using ColorSphere 3 toner are as vibrant, crisp, detailed and polished as you would expect from HP. No matter whether you’re printing single pages or duplex sheets, in best quality or in draft, you know you can expect fantastic results.

HP’s work at the microscopic level of the toner particle is transforming the way its printers work at every level. And with the new LaserJet printers available for as little as £149, even micro-sized businesses can see it in action.



For more information on laserjet printers and all the best deals on printer toner cartridges please visit our website at

https://www.madinks.ie or check out our blog at https://www.madinks.ie/Coloursphere-3

We supply a full range of printer cartridge products across the entire range of printer consumables.  All our laserjet toner cartridges and printer ink cartridges are fully guaranteed and under warranty for three years. To find out how much you could save on your printer ink supplies and laserjet toner cartridges visit us today!

We are stocking the best value HP compatible toner cartridges across all major lines.  Our compatible HP CB435A laserjet toner cartridge is only €24.59 inlcuding FREE DELIVERY.  As always all our HP compatible product is manufactured to the highest standards, and this mono black toner cartridge offers great value with a 2,000 page yield.  Remember when you buy two of our laserjet toner cartridges you will receive a 10% discount, and an amazing 20% discount when you buy three or more!

Check out this amazing deal for the compatible HP laserjet CB435A by following the link https://www.madinks.ie/Hewlett-Packard-CB435A-%2835A%29-385.html

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Need help?  Simply call or online chat with us and we would be happy to help you start making some real savings!  Our entire range of compatible HP laserjet product is available for next day delivery throughout Ireland, and all orders over €20 are delivered FREE OF CHARGE!