Canon imageRUNNER ADVANCE C5051 Series Service Manual page 123

2
Technology■>■Fixing■System■>■Controls■>■Down■sequence■control
Related■Service■Mode
•■ Setting■for■down■sequence■start■temperature■when■feeding■small■size■paper
(Lv.1)■COPIER■>■OPTION■>■IMG-SPD■>■FX-D-TMP
<Setting■value>
-3: -15■deg■C
-2: -10■deg■C
-1: -5■deg■C
0: 0■deg■C■[Default]
+1: +5■deg■C
+2: +10■deg■C
+3: +15■deg■C
•■ Down■sequence■when■switching■paper■size
Purpose:
This■down■sequence■prevents■temperature■rise■of■non-feeding■area:■there■can■be■
possible■fixing■offset■or■wrinkle■of■the■succeeding■paper■due■to■increased■temperature■
of■non-feeding■area■of■the■preceding■paper■when■continuously■making■prints■or■
feeding■wider■length■of■paper■than■the■preceding■paper.
Non-feeding area
A4R
Non-feeding area
2 Technology■>■Fixing■System■>■Controls■>■Down■sequence■control
A4
F-2-122
Starting■conditions:
If■the■detected■temperature■of■sub■thermistor■1■or■2■exceeds■the■specified■temperature■
(250~260■deg■C)■when■switching■to■the■paper■which■has■longer■width■than■the■
preceding■paper.
Operation:
Pickup■of■the■succeeding■paper■and■power■distribution■to■the■heater■are■stopped■as■
well.
Completion■conditions:
This■down■sequence■is■completed■if■any■of■the■following■conditions■is■satisfied:
•■ When■the■detected■temperature■of■sub■thermistor■1■or■2■reaches■the■specified■
temperature■or■less.
•■ When■the■specified■period■of■time*
through■the■fixing■nip.
*1:■Specified■period■of■time■differs■whether■the■fan■has■cooled■the■preceding■paper■or■not.
•■ If■the■preceding■paper■is■A4R■or■larger■and■A3■or■smaller■(the■fan■has■cooled■the■
paper)
→■15■seconds
•■ If■the■preceding■paper■is■smaller■than■A4R■(the■fan■has■not■cooled■the■paper)
→■30■seconds
2-87
1 ■has■passed■since■the■preceding■paper■went■
2-87