Temperature Control For Different Paper; Temperature Control: General Comments - Gestetner B070 Service Manual

Temperature Control for Different Paper

The machine automatically adjusts fusing temperature control for the size and type
of paper or other print media. This is not done to maintain the target fusing
temperature, but to account for differences in the type of paper and power supply
fluctuation.
• Temperature Control for A4/LT sideways or wider: Three lamps are switched
on when copying with A4/LT size paper. In this case, the target fusing
temperature, 168°C for the B070 or 173°C for the B071, is raised by adding the
setting of SP1105 004 (2°C [B070] or 5°C [B071]).
• Temperature Control for paper less wide than A4/LT sideways: Immediately
after a copy job starts with small size paper, three fusing lamps are used, then
lamp C is switched off. In this case, the target fusing temperature, 168°C for the
B070 (90 cpm) or 173°C for the B071 (105 cpm), is raised by adding the setting
of SP1105 003 (7C [B070] or 10°C [B071]).
• Temperature Control for OHP: When copying with OHP transparencies or
tracing paper, three lamps are used and no lamp is switched off.

Temperature Control: General Comments

The fusing lamps switch on to raise the temperature of the hot roller to the target
fusing temperature and switch off when the hot roller is 2°C higher than the target
temperature.
If more than one fusing lamp ceases to function during a copy job, the fusing
temperature drops, the machine enters the stand-by mode and issues SC542
(Fusing Temperature Warm-up Error).
Fusing temperature control is not affected when:
• The machine operates in the low speed mode.
• When thick paper is selected for copying.
• When thick paper is selected for copying in the low speed mode.
SM
CÓPIA NÃO CONTROLADA
6-133
CÓPIA NÃO CONTROLADA
FUSING
B070/B071