--- title: Leneta printing ink proof sheets & paper test inks | Novamart AG url: https://novamart.ch/en/brands/leneta/leneta-printing-inks-printing-sheets-paper-test-inks/ language: en-GB --- # Leneta printing ink proof sheets & paper test inks | Novamart AG > Leneta ink drawdown sheets and paper test inks for testing printing inks on different papers. At Novamart AG. Partner ## Printing ink proof sheets and paper test inks # Printing ink proof sheets and paper test inks ## Printing ink proof sheets These sheets are in **seven different types of paper** available and offer a **Variety of substrates** for testing printing ink quality. Due to their **different absorbency and texture** they are also suitable for testing other coatings. The specified weights, densities and measured values are nominal values and/or approximate values. Sheet size: 5 x 7-5/8 inch (127 x 194 mm) Ink: Deep black (Jet Black). Non-bleeding - [Form 3NT-11 Vellum Opaque Printing Ink Release Sheet](https://novamart.ch/en/product/form-3nt-11-vellum-opaque-printing-inks-proof-sheet/) This is an uncoated, neutral white, porous opaque wove paper. White colour: White. 127 x 194 mm - [Form 3NT-21 Translucent Bond Printing Ink Release Sheet](https://novamart.ch/en/product/form-3nt-21-translucent-bond-drucktinten-abzugsbogen/) This is an uncoated, lightweight paper with a certain transparency. White colour: Neutral white. 127 x 194 mm - [Form 3NT-31 Gloss Finish Coated Book Printing Ink Sheet](https://novamart.ch/en/product/form-3nt-31-gloss-finish-coated-book-drucktinten-abzugsbogen/) This neutral white, coated paper stands for high-quality magazine paper. White tone: Neutral white. 127 x 194 mm - [Form 3NT-35 Matte Finish Coated Book Printing Ink Release Sheet](https://novamart.ch/en/product/form-3nt-35-matte-finish-coated-book-ink-sheet/) This is a neutral white, coated paper with a low gloss or matt finish. White tone: Neutral white. 127 x 194 mm - [Form 3NT-41 Regular Bond Printing Ink Release Sheet](https://novamart.ch/en/product/form-3nt-41-regular-bond-ink-sheet/) This is an uncoated, neutral white paper that is typical for office or letter paper. White colour: Neutral white. 127 x 194 mm - [Form 3NT-51 Unbleached Kraft printing ink release sheet](https://novamart.ch/en/product/form-3nt-51-unbleached-kraft-ink-sheet/) This is an unbleached kraft paper (packing paper) that is representative of the surfaces of brown paper bags and corrugated cardboard boxes. Colour: Brown. 127 x 194 mm - [Shape 3NT-9 Box Laminate Printing Ink Release Sheet](https://novamart.ch/en/product/form-3nt-9-box-laminate-printing-inks-proof-sheet-copy/) This is a laminate of white on brown kraft paper (wrapping paper), which is typical for mottled white corrugated cardboard surfaces. Colour: Mottled White. 127 x 194 mm ## Leneta paper test inks For the evaluation of **Mottling (Mottle)** , **Absorption resistance (holdout)** and **Porosity** of coated and uncoated papers These test inks provide a quick and easy way to monitor variations in paper structure and porosity from batch to batch. Both **Inks with both high and low penetration required** as the **Penetration quality of the ink must correspond to the holdout of the paper surface to be tested** must. **Coated papers** that have a **relatively high holdout** require a **Ink with high penetration to achieve a sufficiently strong colour and speckle pattern.** to receive. **Uncoated papers with low holdout** require a **Low penetration ink to avoid too much colour covering any mottle or holdout differences** would. The following are examples of test samples that were obtained using the two printing inks and illustrate their special properties: Test method: The ink is applied to the paper to be tested using a spatula or a drawdown applicator. After one minute, the ink is removed by scraping off most of the ink with a ruler and carefully wiping off the rest with a clean paper towel. The resulting test sample is visually inspected for stains and porosity. To obtain an instrumental value for porosity, the CIE-Y reflectance or densitometer values of the coloured and uncoloured areas are measured and then calculated: | TK-11 High Penetration lnk | TK-21 Low Penetration Ink | | TK-11 High Penetration Ink | TK-21 Low Penetration Ink | | --- | --- | --- | --- | --- | | | | | | | Coated papers | Uncoated papers | - [Leneta TK-11 paper test ink with high penetration for coated paper](https://novamart.ch/en/product/leneta-tk-11-paper-test-ink-with-high-penetration-for-coated-paper/) For the assessment of mottling, absorption resistance and porosity of coated paper. - [Leneta TK-21 paper test ink with low penetration for uncoated paper](https://novamart.ch/en/product/leneta-tk-21-paper-test-ink-with-low-penetration-for-uncoated-paper/) For the assessment of mottling, absorption resistance and porosity of uncoated paper. ## Applicator for paper test ink - [Paper test ink film applicator TK-100](https://novamart.ch/en/product/leneta-tk-100-applicator-for-paper-test-ink/) This cost-effective aluminium applicator was specially developed for use with Leneta test inks. One side with a 250 µm gap applies a 75 mm wide film. The other side can be used as a practical scraper. --- Novamart AG, Rosenbergsaustrasse 7, 9434 Au SG, Schweiz. Telefon +41 71 228 88 33, info@novamart.ch. Übersicht für Agenten: https://novamart.ch/llms.txt