In this embodiment, the color former containing {HEAD ~ microcapsules} may be produced by any method known in the art; however, a preferred method of microencapsulation is disclosed in {TAIL ~ Seitz}, U.S. Pat No 4,889,877, the disclosure of which is incorporated by reference 
In this embodiment , the color former containing { HEAD ~ microcapsules } may be produced by any method known in the art ; however , a preferred method of microencapsulation is disclosed in { TAIL ~ Seitz } , U.S. Pat No 4,889,877 , the disclosure of which is incorporated by reference
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH