Roll to Roll Media Certification Process

The process

We have developed a convenient way of testing print media after printing with HP Latex inks, while collecting all necessary printing parameters. The HP Latex Certification program puts the material specifications and optimal setting for your media straight into thousands of printers and into the HP Media Solutions Locator website.

1. Optical print quality check for coalescence, deformation, grain, banding, etc.

Optical checkWe test each media for obvious visual defects by printing carefully designed test files, designed to expose weaknesses in coating or surface materials. We are checking for issues like: banding, deformation, bleeding, coalescence, and grain. By adjusting the printer settings and finding the right parameters within the bandwidths specified for the respective media, we will try to solve the visual defects.

2. Minimum color gamut required for certification
Each material category has predefined color gamut requirements. In other words: we expect a certain color range and quality for each media category. By creating an ICC profile and measuring the gamut volume of these profiles, we are able to determine whether the media capabilities fall within the required bandwidth.
3. Ink migration
HP Latex printers support the printing of materials with an open structure with the help of the Ink-Collector-Kit. We designed a test in order to find out whether a material requires the installation of this kit and to ensure the material does not transfer inks after it has been transported.
4. Shrinkage

Latex ink requires curing, which has the potential to cause media to dimensionally shrink during the printing process. By printing specially designed test files and measuring the physical print after it has been fully cured, we make sure your material falls within the tolerances set by HP.

5. Wrinkles
Transporting materials through an inkjet printer must be precise and flawless. Having too much pressure, not enough or too much vacuum power, or too much heat might cause wrinkling of the material during the printing process. By adjusting the printer parameters, we make sure that wrinkling is entirely eliminated, ensuring perfect image quality without any hassle for the printer operator.
6. Washability
Transfer materials can be used in combination with HP Latex inks. This test is designed to test whether the transferred image will hold during an ISO standardized washing test; ensuring that those colorful t-shirts will remain as colorful as they were designed and printed.
7. Water fastness
HP Latex inks are waterfast, under the right conditions and with the right material. This test is a basic water fastness test that ensures the media is capable of withstanding and handling water, within the expectations of HP and Color Concepts.
8. Ink cracking under tension
Printing on super flexible materials can be a challenge, especially when it comes to stretching and bending the material for its final application. HP Latex ink are designed for great flexibility. This test determines if a material in a particular category is able to handle the grade of flexibility you might expect from it. This test is done by stretching the material and detecting if any ink cracking occurs.
9. Ink adhesion

Ink adhesion is a crucial part of any printing process. HP Latex inks have great adhesion properties on compatible materials. This procedure uses industry standard tools to perform the required testing to make sure the materials are compatible with the HP Latex inks and provide the adhesion required for the application the material is designed for.

10. Cross cut ink peel-off

What happens to the rest of the image after a print gets damaged by scratching or cutting? Of course we all hope prints stay safe and live forever. However, reality is different sometimes. This test simulates what happens to the image, after a part of a print gets damaged.

11. Wet / dry rub
Can I touch the material after printing? Does this media require lamination after printing? Just some questions every print shop wants answered. For this test we are using high-end lab equipment to simulate dry and wet rubbing as it might occur in daily life.
12. Scratchability
Every print shop and print media expert knows the test: you take a print, you have your thumb and you scratch. Since everyone is scratching different, we designed a reproducible test that simulates the average force of a reasonable amount of scratching that every printed material should survive.
13. Folding / creasing

Finished printed material generally requires transportation to reach its final home. During this move, some materials could be folded to ease transportation and to save on costs, or even for the intended application. This test simulates what a material has to endure while being folded, stuffed in an envelope, and shipped.

Apply now

Are you a media manufacturer or reseller? Apply for the HP Latex Certification Program today. We will contact you with further information once we received your inquiry.

Are you a print shop and do you want to know more about a particular application in combination with HP Latex inks? Please contact us!