Abstract: An image reading apparatus for converting an image on a document having a white/black text area into a display signal. An image reader scans pixels forming the image to produce a read signal having a level corresponding to the brightness density of each of the scanned pixels. The read image is compared with a dither matrix data signal and converted into a dither converted signal. The read image is also compared with a threshold value and converted into a binary signal having a first level representing a white pixel and a second level representing a black pixel. A discrimination circuit receives the binary signal for producing a detection signal when the white/black text area is scanned. Upon occurrence of the detection signal, the dither converted signal is mixed with the binary signal to form the display signal.

Abstract: A method for insulating a coil of a rotary electric machine resulting in improved insulating properties at critical coil ends. A mica sheet or mica tape is wound around a part of each coil to be inserted into a slot cut in an iron core of the rotary electric machine to thus form a first insulating layer. The coils thus treated are inserted into respective slots and are connected together and to external terminals as required. Each coil end is then covered in its entirety with a thermosetting resin. The thermosetting resin is hardened by heating to form a second insulating layer.