Magnetic detecting unit having aligned sensors

A magnetic sensor unit comprising:

• a nonmagnetic sensor case having a plurality of sensor housing recesses formed in a surface, and a plurality of magnet housing recesses formed in an opposing surface of said sensor case at positions respectively corresponding to the sensor housing recesses, said sensor case having a bias adjusting portion disposed between each of said sensor housing recesses and each of said magnet housing recesses;
• a nonmagnetic cover for covering at least the upper surface of said sensor case having said housing recesses;
• magnets respectively housed in the magnet housing recesses of said sensor case;
• magnetic sensors respectively housed in the sensor housing recesses of said sensor case, having magnetoelectric transducers magnetically biased by said magnets and first and second substantially perpendicular positioning edges;
• and
• positioning means having recesses respectively formed in the bottom surface of the sensor housing recesses, the positioning means including first and second, substantially perpendicular surfaces in direct contact with the perpendicular positioning edges of each of the sensor for positioning each of said magnetic sensors along a detection line and along a direction transverse to said detection line whereby magnetic characters are substantially simultaneously detected by said magnetic sensors for the output of detection signals by said magnetic sensors.