Probably, the treating liquid having a high penetrability to the recording medium diffuses rapidly to form a kind of an ink receiving layer on the surface of the recording medium, so that the ink can easily penetrate and diffuse on {TAIL ~ the surface} to form a dot reacting with {HEAD ~ the treating liquid} 
Probably , the treating liquid having a high penetrability to the recording medium diffuses rapidly to form a kind of an ink receiving layer on the surface of the recording medium , so that the ink can easily penetrate and diffuse on { TAIL ~ the surface } to form a dot reacting with { HEAD ~ the treating liquid }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD