Problème d'impression des accents

Bonjour à tous
je suis sur un serveur linux type : Linux 3.10.0-514.26.2.el7.x86_64 #1 SMP Fri Jun 30 05:26:04 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
et je souhaite faire des impressions de fichiers avec accent :weird:

exemple : j'ai le fichier "myfile.txt" suivant (Oui je sais , il est relou ce fichier :oops: mais pour l'exemple le problème est flagrant :weird:)

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èèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèè
èèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèè
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èèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèèè
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file myfile.txt
myfile.txt: ISO-8859 text

Si je lance une impression direct sur l'imprimante : rien ne sort
Resultat KO ==> :aie:

Code:

lp -dmy_printer -o nobanner -o landscape -o lpi=12 -ocpi=17 myfile.txt

Pour que cela fonctionne , je suis obligé de faire une conversion de mon fichier en utf8
Resultat OK ==>:roll:

Code:

iconv -fiso8859-1 -tutf8 myfile.txt | lp -dmy_printer -o nobanner -o landscape -o lpi=12 -ocpi=17

Y a t'il une option d'impression qui puisse me permettre de lancer la commande lp sans avoir préalablement à convertir mon fichier en UTF8 ? :?
Contrainte : je ne doit pas modifier ma variable LANG : LANG=fr_FR.ISO-8859-1 :ptdr:

PS: les imprimantes ont toutes été installées avec les drivers associés à leur modèle
Merci de votre aide 8-)