Ricoh OP-P1 Service Training page 118

Brief Descriptions of the Technologies
 1. QSU (Quick Start-up)
 This technology reduces both the amount of energy
 This is made possible through the utilization of dual fusing
 2. Hybrid QSU
 This technology adds an additional circuit to conventional
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consumed while in Standby mode (the Ready condition) is
reduced, as well as the time it takes for the machine to
warm up to the Ready condition.
lamp heating, low fusing point toner, a pressure roller with a
"sponge" surface layer, and a thin surface layer hot roller.
QSU Technology, which allows the benefits of reduced
energy consumption and reduced warm-up time described
above to be extended to high-speed machines.
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OP-P1/MF1 Training