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Black Core paper: the role of the black core

Learn what the black-core specification tells you when choosing paper, and what else to check for your cards.

Practical guide · 7 September 2026

Black Core means a black central layer

Black Core means paper with a black central layer. For your playing cards, it is a first point of comparison between papers. Colour reproduction and feeding also depend on the finish, inks and settings; this specification alone does not guarantee a resemblance to another brand’s card.

What this information can help you compare

With the same finish, it helps identify the black-core references in the catalogue. To choose a sheet, also compare the finish, basis weight, stated thickness, sold format and packs that are actually available.

The matte references currently include a 300 gsm version listed without a retail pack and a 330 gsm version offered in A4. Availability and pack details remain those displayed by the shop when you visit.

What Black Core does not prove

A black core is not a test of opacity, stiffness, cutting, drying or double-sided printing. These outcomes depend on the complete medium, file, inks, feed and settings. Keep a test sheet and record the equipment used if you want to reproduce the result.

Sources and scope

  • ProxyCardStock catalogue

    The Black Core characteristics, basis weights, formats and finishes shown in this guide are supplier statements repeated in the catalogue.

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