after various test i have seen under microscope this situation..

first honing sequence :
50 laps on my coticule with pressure...40 laps on green paste and strop..
under microscope i have seen that the final part of the blade (i call the black part because it is ligthly black)was thicker entire the blade....

second honing sequence :
50 laps on coticule with slurry and without pressure 40 laps on green paste and strop..
under microscope the "black" part appear very LESS THICKER and the final part of the blade is shine!

what happended?

how appear a very sharp blade under microscope?

thanks you my friends