Sharp FO-2970M Service Manual page 53

j. Timing chart
• Printing process
Pre-revolution processing
Timing from DPAGE (internal signal of ASIC) to BIAS ON (pre-revolu-
tion processing) is specified.
Before rotation of printing (unit:sec)
MM
PMD
APCSTT
LEND_
HSYNC_
LDATAEN
LD_
MC
3.5
ACSIN
TC/Bias
PU
HLON
DREADY_
DPAGE_
AC 68%
143.9
AC 44%
93.1
211.7
Fig. 17
Laser control becomes hard control from the movement when HSYNC
interruption was permitted.
Post-revolution processing
Timings from POUT to motor stop (post-revolution processing for print-
ing) are specified.
After rotation of printing (unit:sec)
MM
PMD
APCST
Harf line discharge(20Line)
LEND
HSYNC_
0.47
LDATAEN
Harf line discharge(20Line)
LD_
MC
Sine wave form output
50% DC ON
ACSCN
TC output
TC/Bias output
0.54
Cleaning
POUT
OFF
After rotation of printing
DREADY
DPAGE
Fig. 18
1.03 0.7
44%DC ON
68%DC ON AC SIN
0.98
unit( s)
OFF
3.0
OFF
68% DC ON
4.8
0.5
OFF
STOP
Continuous printing processing
*1 Waiting according to fixing temperature (Environmental tempera-
ture)
*2 Top margin
READY
DPAGE
VSYNC
PRSTT
MM
3.5
PMD
APCSTT
LEND
HSYNC
LDATAEN
LD_
4.0mm(*2)
MCON
ACSIN
0.28
Min1.0(*1)
Tc/BiasON
0.68
PUS
1.25Typ.
PIN
POUT
Before rotation
of printing
Revolution before cleaning when power is on and cover is closed
Unit: second
MM
PMD
ON
3.5
APCSTT
LEND_
HSYNC_
LDATAEN
LD_
OFF
OFF
ON
MC
1.0
ACSIN
OFF
TC/Bias
output voltage
TC/Bias
HLON
DREADY_
DPAGE_
5 – 17
(0.5)
(Letter Size)
Fig. 19
ON
5.6
LEND_ Hard control start
LEND_ Hard control end
Generation
68%DC ON
(5.0)
OFF
Cleaning
Fig. 20
FO-2970MU
3.0
0.54
After rotation
of printing
3.0
OFF