The images here are from two different pages in the Leipzig University Library collection:

1. The first is column 1 from Q35 f5v found here on the CSP website.  This page is on the hair side of the parchment.  No overwriting is noted on the CSP description of this page.  There is very little flaking or fading of the ink on this page.  This "super ink" has not faded or flaked significantly.  The original scribe of this page is identified as Scribe A.

2. The second is column 2 from Q48 f8v found here on the CSP website.  This page is on the flesh side of the parchment.  The ink appears very faded in places with a significant amount of overwriting.  The CSP description of this page notes a) variance in the colour of the original text, b) variance in the colour of substitutions/corrections, and c) variance in the colour of overwriting.  The retracing shown in this image appears to be less carefully done than the  original writing.  The original scribe of this page is identified as Scribe B1.  The scribe who did the overwriting is identified as Corrector d.