Per spiegare la funzione di ATAG, ovvero quale servizio può dare ATAG in questi trattamenti bisogna ritornare alla macchina che effettua il trattamento. Abbiamo citato un rullo elettricamente “a terra”.
Questo rullo funge da controelettrodo, ossia scarica la carica della corrente ad altra frequenza generata dagli elettrodi che ionizzano l’aria, e nel contempo fa in modo di mantenere la pellicola alla corretta distanza dall’elettrodo.
Bene, questo rullo può essere rivestito con una particolare guaina che funge da smorzatore delle cariche, riesce a reggere le temperature di contatto, è sufficientemente elastico e morbido da essere il materiale adatto per il trascinamento dei film.
Il rullo ha quindi caratteristiche tali da giustificarne l’impiego (vedi specifiche più avanti) e permettere ad ATAG di proporlo con successo.
Uno sguardo all’interno della stazione di trattamento corona.
Dietro ai rullini bianchi guida-fogli si intravede la luce bluastra dell’elettrodo in funzione.
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