Four-Part Series: Temperature, Printhead, and Ink Improvements in the HP Latex 700 and 800 Series

In the first part of our four-part series, Latex expert Timothy Mitchell discussed the differences between the Latex 700 and 800 Series. In part two, he talks about some improvements over previous generations of latex printers.

In the video above, Mitchell takes you deeper into the technology improvements in these four new printers. These improvements can decrease your turn-around time and enhance your output from curing temperature to printheads to modular ink.

Curing Temperature:

With previous generations of latex printers, it was nearly impossible to use heat-sensitive media like polyester, polypropylene, or even paper. Printing on these media was possible by reducing the temperature and amount of ink and slowing the speed. But in doing so, the colors lost vibrancy, and the graphics took longer to produce.

With the curing temperatures lower – from 230° F to 195° F – you don’t have to decrease speed or ink levels, resulting in better saturation and warp-free graphics. “These printers, because they are running at such a lower temperature, it’s like an entire shift,” says Mitchell. “Everything I run is now going through the printer faster and at a lower temperature. As a result, I can put more ink down, and there’s no sacrifice in quality.”


HP made several improvements to the new printheads. There are now 3000 nozzles instead of 2112, meaning if there are clogs or low-performing nozzles, other nozzles will pick up the slack. The size of the drop is now 10 picolitres rather than 12. That means better dot placement for fine text and shading. Mitchell explains that other improvements include an elliptical shape nozzle and microcirculation to improve the performance of the ink.

“It’s a smaller drop, better drop accuracy with the elliptical nozzle, the printhead is user-replaceable, inexpensive, durable, and water-based,” he says. “The printheads are completely new, and they complement this new printer wonderfully.”

Modular Ink:

The new modular ink system has three components: the optimizer, increased pigments, and the overcoat. The optimizer – which keeps everything fixed to the media – has always been an essential part of HP’s ink and has not changed. The increased pigment gives this generation of printers an extensive color gamut.

The third component is the overcoat. The overcoat was part of the ink with the 300/500 series printers. But now, the overcoat has its own printhead and can be turned on or off, depending on the application. As Mitchell explains, “If you’re using a laminate workflow – cold lam or liquid lam – you turn the overcoat off. It will give you a better bond between the laminate and material.”

Now that you’ve learned some of the HP Latex 700 and 800 Series improvements, take a closer look at the printers in The LexJet Experience or contact a LexJet printer specialist at 800-453-9538. And, stay tuned for the final two installments of our four-part series. And, stay tuned for the final two installments of our four-part series.

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