Optical print head and image forming apparatus

An optical print head comprising:

• a substrate on which multiple light sources aligned in a main scanning direction are mounted to emit beams of light in a direction perpendicular to a surface of the substrate;
• a lens array to focus the beams of light on an image bearing member to form an image thereon;
• a housing comprising a guiding portion extending in the main scanning direction, the housing positioning the substrate and the lens array;
• a cleaner to clean a light-emitting surface of the lens array while moving in the main scanning direction;
• a moving device operatively connected to the cleaner to move the cleaner;
• a supporting member to support both the housing and the cleaner;
• and
• an evacuation area where the cleaner does not face the light-emitting surface of the lens array and which accommodates a scraping member to scrape foreign objects attached to the cleaner, the evacuation area being provided on at least one end of the housing in the main scanning direction,
• wherein a first end of the cleaner is disposed at one end of a contact portion of the cleaner in a sub-scanning direction, perpendicular to the main scanning direction, the first end of the cleaner being screwed to a shaft supported in the main scanning direction at both ends of the supporting member such that the first end of the cleaner moves along in the main scanning direction as a result of a rotation of the shaft, and
• wherein a second end of the cleaner is disposed at another end of the contact portion of the cleaner in the sub-scanning direction, opposite the first end, the second end of the cleaner being engaged with the guiding portion formed along the main scanning direction of the housing.

An optical print head comprising:

• a substrate on which multiple light sources aligned in a main scanning direction are mounted to emit beams of light in a direction perpendicular to a surface of the substrate;
• a lens array to focus the beams of light on an image bearing member to form an image thereon;
• a housing comprising a guiding portion extending in the main scanning direction, the housing positioning the substrate and the lens array;
• a cleaner to clean a light-emitting surface of the lens array while moving in the main scanning direction;
• a moving device operatively connected to the cleaner to move the cleaner;
• a supporting member to support both the housing and the cleaner;
• and
• a scraping member to scrape foreign objects attached to the cleaner,
• wherein a first end of the cleaner in a sub-scanning direction, perpendicular to the main scanning direction, is rotatably supported by the supporting member to be rotatable around a shaft parallel to the main scanning direction,
• wherein a second end of the cleaner, opposite the first end, engages the guiding portion to contact the cleaner against the light-emitting surface of the lens array with a constant force while the cleaner moves over the light-emitting surface in the main scanning direction during cleaning of the light-emitting surface, and
• wherein the scraping member is electroconductive and a positive or negative voltage is applied thereto.