How to calculate the paper reduction ratio

How to calculate the paper reduction ratio, when compared with Single-sided copying, with no 2-in-1 combine mode

Paper reduction ratio (%) = Number of sheets reduced: A/Number of printed original images: B x 100

• Number of sheets reduced: A

  = Output pages in duplex mode/2 + Number of pages in Single-sided with combine mode + Number of pages in Duplex with combine mode x 3/2
  A = ((2) + (3) + (4))/2 + (5) + (6) x 3/2

• Number of printed original images: B

  = Total counter6 + Number of pages in Single-sided with combine mode + Number of pages in Duplex with combine mode
  B = (1) + (5) + (6)

• (1) Total counter: SP 8581 001 (pages)

• (2) Single-sided with duplex mode: SP 8421 001 (pages)

• (3) Double-sided with duplex mode: SP 8421 002 (pages)

• (4) Book with duplex mode: SP 8421 003 (pages)

• (5) Single-sided with combine mode: SP 8421 004 (pages)

• (6) Duplex with combine mode: SP 8421 005 (pages)