TEMPERATURE CONTROL FOR AN IMAGING LASER

In one example, an imaging system (10) for a laser printer includes: an imaging laser (26) in which, within a range of drive currents, a threshold current of the laser varies with temperature and an efficiency of the laser does not vary with temperature; a power sensor (20) to measure an output power of the laser at a drive current within the range of drive currents; and a temperature control device (32) to change the temperature of the laser based on an output power measured by the power sensor. 在个示例中，用于激光打印机的成像系统(10)包括：成像激光器(26)，其中，在定的驱动电流范围内，激光器的阈值电流随着温度而变化并且该激光器的效率不随温度而变化；功率传感器(20)，用于测量该激光器在该驱动电流范围内的驱动电流下的输出功率；以及温度控制设备(32)，基于由功率传感器测量的输出功率来改变激光器的温度。