| 摘要 |
An optical print head of the present invention includes a light emitting element array having of a plurality of light emitting elements. A rod lens array has a plurality of rod lenses for focusing light output from the rod lenses on an image carrier in the form of beam spots. The rod lenses each have a conjugate length greater than a distance between the light emitting element array, which forms a x1 image, and the image carrier. The head of the present invention reduces the diameter of a beam spot and positions a beam waist close to the image carrier to thereby increase resolution. An image forming apparatus using the above head is also disclosed.
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