АААА!!! Принтер с неизвестной кодировкой!! помогите фильтр написать

Блин, canon bj-30, мать его. Пробовал посылать и в koi и в cp866 и в
cp1251- не то Умные люди, помогите с фильтром а то я кроме этого
ничего ж нe умею!!

#include <stdio.h> int main (int argc, char *argv[])
{
unsigned char a[256]={ 0, 1, 2, 3, 4, 5, 6, 7,
8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23,
24, 25, 26, 27, 28, 29, 30, 31,
32, 33, 34, 35, 36, 37, 38, 39,
40, 41, 42, 43, 44, 45, 46, 47,
48, 49, 50, 51, 52, 53, 54, 55,
56, 57, 58, 59, 60, 61, 62, 63,
64, 65, 66, 67, 68, 69, 70, 71,
72, 73, 74, 75, 76, 77, 78, 79,
80, 81, 82, 83, 84, 85, 86, 87,
88, 89, 90, 91, 92, 93, 94, 95,
96, 97, 98, 99,100,101,102,103,
104,105,106,107,108,109,110,111,
112,113,114,115,116,117,118,119,
120,121,122,123,124,125,126,127,
128,129,130,131,132,133,134,135,
136,137,138,139,140,141,142,143,
144,145,146,147,148,149,150,151,
152,153,154,155,156,157,158,159,
160,161,162,163,164,165,166,167,
168,169,170,171,172,173,174,175,
176,177,178,179,180,181,182,183,
184,185,186,187,188,189,190,191,
156,189,162,164,166,168,170,172,
181,183,189,198,208,210,212,214,
216,222,225,227,229,231,233,235,
237,241,243,245,247,249,251,158,
157,161,163,165,167,169,171,173,
182,184,190,199,209,211,213,215,
221,224,226,228,230,232,234,236,
238,242,244,246,248,250,252,159};
unsigned char c=argv[1][0];
printf("%c",a[c]);
return(0);
}