Every now and again we receive a letter asking whether or not the signature Rhodia violet lines have become darker. Rob Morrison sent us the photo above and said that the seemingly darker lines “really disguise the writing.”
The lines on the new pads do appear darker because Rhodia is now using a 100% natural ink as opposed to a chemical one.
In terms of color, the dye sources are providing recipes to match as close to possible to the standard violet Rhodia was using until 2010. While the ink formula remains the same in terms of intensity, the new inks are no longer sensitive to UV rays. What previously appeared to be lines of a lighter color were actually the chemical inks becoming fainter once exposed to light. While both old and new pads had the same ink intensity coming out of the factory, the old ones became lighter within a relatively short time. The new ones will not.
In both intensity and hue, natural inks tend to show more variation from one production batch to another. They are more sensible to machine speed, direction of the paper fiber etc.- each batch requiring a fine tuning to meet quality standards.
We hope that you will understand our choice for natural inks to be an integral part of our commitment to protect the environment, from sustainable fibers to water and air treatments.
That being said, we are actively working within those ecological parameters to answer your request for lighter rule in our Rhodia pads.
Stay tuned for updates!