| 摘要 |
A cooling system for an electronic appliance is configured so as to include a duct made up of a high thermally conductive material over a fixing unit as a high-temperature unit, part of a laser writing unit being inserted into the duct, and a fan for creating an air flow inside the duct. With this configuration, heat arising from the laser writing unit is discharged outside by virtue of the air flow to cool the laser writing unit while the laser writing unit is arranged so as not to directly oppose the fixing unit, to thereby prevent temperature rise of the laser writing unit due to heat arising from the fixing unit. Further, the fixing unit is arranged so as not to be in direct contact with the air flow, hence no heat more than needed will be removed from the fixing unit, thus making it possible to keep the fixing unit at the predetermined high-temperature state.
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