Campuskarte Studierendenausweis


Creating Printing Data

Resolution, trim, and data format not clear? Here you can get an overview

Type Overview

Here you can find an overview of all available TRW-foil formats

What is Thermo-Rewrite (TRW)?

TRW-foil on the card surface enables the card to be repeatedly visually personalised, meaning the deleting and rewriting of cards. This technology is especially useful for ID-card with changing parameters such as the term dates on student ID-cards, name and validity date on visitor ID-cards and for temporary or timed licences (e.g. date of the last training course). With the help of this flexibility, the ID-card can be kept up to date for longer periods and thus protects the environment and the budget.

Applications of TRW-cards

  • University student ID-cards
  • Student ID-cards
  • Visitor cards
  • Tickets and event pass
  • Tickets
  • Skiing passes

TRW-printing: That's How It Works

Für das Drucken und Wiederbeschreiben ist ein spezieller TRW-Kartendrucker notwendig. Die Einfärbung der Personalisierung kann dabei in Blau oder Schwarz erfolgen, was jedoch nicht vom Drucker, sondern von der verwendeten TRW-Folie auf der Karte abhängig ist. Der Thermokopf des TRW-Druckers regt dabei die TRW-Folienschicht auf der Kartenoberfläche zum Einzufärben bzw. verblassen an. Färben oder Löschen wird über die Regulation der Hitzeintensität und Abkühlgeschwindigkeit des Entwicklers in der Folie gesteuert.

10 mm stripe, horizontalblue or black
20 mm stripe, horizontalblue or black
TRW-field in a free formatmin 8 x 40 mm, blue or black
full surface coatingblue or black

How Often Can TRW-Field be Rewritten?

According to official statistics, a lifespan of 500 write-and-delete-cycles is estimated. However, this figure is rarely reached in praxis. Faulty printer settings, dirt, or too much UV-influence can significantly shorten the theoretical figure. Proper maintenance of the printer and the adherence to instructions is strongly advised!

Caution! Sensitive to Light 
Cards with a TRW-coating should be protected from the sun. The sensitive layer yellows under the influence of UV and becomes unsightly.

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picture credits


© Alexandr Bognat –

© abimagestudio –