Canon 1730, Руководство по обслуживанию

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Technical Explanation > Fixing System > Controls > Change in fixing performance by user mode (Special Mode)
Technical Explanation > Fixing System > Controls > Change in fixing performance by user mode (Special Mode)
● Down sequence when switching paper size
Purpose:
When feeding a sheet with a wider width than a preceding sheet during continuous
printing, temperature at the non paper-feed area of the preceding sheet increases,
and it can cause fixing offset and wrinkles when feeding the succeeding sheet. This
down sequence controls temperature increase at the non paper feed area.
Film
Non-feed area
Non-feed area
Starting conditions:
When the paper is switched to a wider paper than the preceding sheet during printing,
the detected temperature of the Sub Thermistor is higher than 210 deg C (*1).
Operation:
This is a control to stop pickup of the succeeding sheet and power distribution to the
Fixing Heater to reduce fixing temperature.
Termination condition:
When detected temperature of the Sub Thermistor is 170 deg C or lower (*1).
*1. The temperature differs according to the user mode settings (Special Mode S).
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Change in fixing performance by user mode (Special Mode)
Changing the control temperature or throughput affects fixing performance in some modes
of special mode settings in user mode. The following describes the mode which affects fixing
performance.
User mode Overview Setting value Control temperature/throughput
Special Mode N
(to avoid curl/jam
at a high humidity
environment)
This is a mode to set
temperature control
when any of plain
paper, recycled paper,
color paper or 3-hole
paper is selected on
the Control Panel. To
reduce productivity
to increase fixing
performance.
Off Normal temperature control
(temperature control for plain paper
mode)
Auto
(to increase fixing
performance)
(Default)
This is a mode to switch between the
normal temperature control and N1
mode (*1) according to the environment
(temperature/humidity).
Manual (Medium)
(to increase fixing
performance)
Special Mode N (Medium) mode
temperature control
Manual (High)
(to increase fixing
performance)
Special Mode N (High) mode (*2)
temperature control
Special Mode P
(to avoid curl
of thin paper/
recycled paper) This is a mode to set
temperature control
when any of plain
paper, recycled paper,
color paper or 3-hole
paper is selected on
the Control Panel. To
reduce productivity
to increase fixing
performance.
Off
(Default)
Normal temperature control
(temperature control for plain paper
mode)
Medium
(to increase fixing
performance)
Thin paper mode temperature control
High
(to increase fixing
performance)
S-thin paper mode temperature control
Special Mode G
(to increase fixing
performance of
heavy paper) To reduce productivity
to increase fixing
performance.
Off
(Default)
Normal control
On
(to increase fixing
performance)
To reduce throughput by 4 or 5 sheets
Special Mode S
(to ease
deceleration
of print speed
at temperature
rising at the edge)
To reduce wait time
for pickup permission
temperature when
the paper size is
changed to prioritize
productivity over fixing
performance.
Off
(default)
This is a control to set the pickup
permission temperature at 210 deg C
and pickup recovery temperature at 170
deg C.
On
(Priority on
productivity)
This is a control to set the pickup
permission temperature at 190 deg C
and pickup recovery temperature at 230
deg C.
*1 Special Mode N (Medium): -20 deg C of normal control temperature (at pickup from
cassette, when fixing temperature at the start of Startup control is 100 deg C or higher)
*2 Special Mode N (High): -35 deg C of normal control temperature (at pickup from cassette,
when fixing temperature at the start of Startup control is 100 deg C or higher)
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