| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an exposure device having a light quantity adjustment mechanism for making a light quantity of each light emitting device in a light emitting device array to be uniform in an initial stage and at a time point after a prescribed time has passed. <P>SOLUTION: A control means 31 adds light emission data of each of the light emitting devices 3a-3n to a stored value (the number times of emissions or a time period of emission of a light) of respective light emitting device read from a memory means 32 to respectively obtain updated values and writes the updated values to the memory means 32. A detection means 33 detects whether or not the updated value written by the control means 31 to the memory means 32 reaches a prescribed value. A light quantity adjustment means 34 obtains light emission conditions (a light emission time period, a drive current value, and a drive voltage value) for adjusting the light quantity of the light emitting device detected by the detection means 33 including the initial light quantity to be in a constant light quantity level and outputs them to a data setting section 36. The light quantity adjustment means 34 obtains an initial value necessary for adjusting the light quantity at the next time of the light emitting device detected by the detection means 33, and an initialization means 35 sets the initial value to the memory means 32 to initialize the stored value of the light emitting device. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
