a bench trial, the district court found in favor of defendant on plaintiff's Title VII claims.   We affirm.


3
Plaintiff, a black female, held the position of Complaints Specialist in the Equal Employment Opportunity Complaints Activity Office (EEO) at Tinker Air Force Base, Oklahoma, from January 1, 1976, until February 14, 1988.   Complaints Specialists investigate claims of discrimination and attempt to achieve resolution without judicial intervention.


4
Defendant Aletha Tarkington, plaintiff's supervisor, while encouraging employees to participate in civic and civil rights groups, required that any involvement by employees in "special committees" be reviewed by her.   Plaintiff had a history of membership and participation in the NAACP and Blacks in Government (BIG).   Upon plaintiff's election as treasurer of BIG, she advised Ms. Tarkington, who1. Field of the Invention
The present invention relates to an image forming apparatus for forming an image through laser exposure steps.
2. Description of the Related Art
An electrophotographic image forming apparatus forms an electrostatic latent image by applying laser light to a photoconductor uniformly charged. After that, toner is adhered to the electrostatic latent image to form a toner image, and the toner image thus formed is transferred onto a sheet of paper. In a laser exposure process during which the electrostatic latent image is formed, the laser light is emitted intermittently in accordance with image pulse signals depending on a dot pattern of the electrostatic latent image. At a time when a laser diode (LD) used as a laser light source is supplied with drive current greater than