Patent ID: 7158166
Filing Date: 2007-01-02
Classification: B41J

Abstract:
1. An optical printer head which comprises a liquid crystal shutter and a frame body that houses the liquid crystal shutter, and irradiates the light which has passed through said liquid crystal shutter to a photoconductor through a lens array, wherein said liquid crystal shutter has a structure such that a polarizing plate smaller than a liquid crystal cell substrate is put on the liquid crystal cell board, said frame body includes a base portion having an opening through which light passes and a liquid crystal shutter housing recess formed over said base portion, the bottom portion of the liquid crystal shutter housing recess is formed with a polarizing plate housing portion composed of a space large enough to house said polarizing plate, said lens array is located on the underside of said base portion, said liquid crystal shutter is positioned such that it comes into contact with the bottom of the liquid crystal shutter housing recess in said base portion; and said polarizing plate is adapted to be housed in the polarizing plate housing portion so that the liquid crystal cell substrate is positioned with respect to said lens array when the liquid crystal shutter is housed in the liquid crystal shutter housing recess.