OPTICAL SCANNING DEVICE, IMAGE FORMING APPARATUS, MIRROR, HOUSING, MIRROR ATTACHING METHOD, MIRROR ARRANGEMENT ADJUSTING DEVICE, AND MIRROR ARRANGEMENT ADJUSTING METHOD

• US 20080117486A1
• Filed: 10/02/2007
• Published: 05/22/2008
• Est. Priority Date: 10/04/2006
• Status: Active Grant

• Current Assignee: Ricoh Company Limited
• Original Assignee: Ricoh Company Limited
• Inventors: Takemoto, Hiroshi, Terasawa, Kouji, Nakajima, Mitsuru, Yoshida, Jun, ANDOH, Fumikata
• Granted Patent: US 8,363,296 B2
• Time in Patent Office: Days
• US Class Current: 359/198
• CPC Class Codes: G02B 26/125 Details of the optical system between the polygonal mirror and the image plane G02B26/123, G02B26/127 take precedence; F-Theta lenses G02B13/0005
• CPC Class Codes: G02B 5/0858 the reflecting layers comprising a single metallic layer with one or more dielectric layers
• CPC Class Codes: G02B 7/182 for mirrors

Abstract

An optical scanning device configured to irradiate an object with light generating from a light source via at least one mirror with a first end portion and second end portion which are attached to a housing and to scan the object with the irradiating light is provided, wherein the first end portion of the at least one mirror is movably supported by the housing and the second end portion of the at least one mirror is bonded to the housing.

Claims

1. An optical scanning device configured to irradiate an object with light generating from a light source via at least one mirror with a first end portion and second end portion which are attached to a housing and to scan the object with the irradiating light, wherein the first end portion of the at least one mirror is movably supported by the housing and the second end portion of the at least one mirror is bonded to the housing.

2. The optical scanning device as claimed in claim 1, wherein the housing has a convex portion and the first end portion of the at least one mirror is supported by one point on the convex portion.

3. The optical scanning device as claimed in claim 2, wherein the convex portion has a curved surface and the first end portion of the at least one mirror is supported by one point on the curved surface of the convex portion.

4. The optical scanning device as claimed in claim 1, which comprises an elastic fixation member configured to fix the first end portion of the at least one mirror on the housing.

5. An image forming apparatus configured to form an image by using an optical scanning device, wherein the optical scanning device is an optical scanning device as claimed in claim 1.

6. A mirror capable of being bonded by an adhesive material, which has a film configured to improve a bonding power of an adhesive material.

7. The mirror as claimed in claim 6, wherein the film is a film configured to improve a reflectance of a mirror surface of a mirror.

8. The mirror as claimed in claim 6, wherein the film comprises a SiO₂ layer.

9. The mirror as claimed in claim 6, which has a portion capable of transmitting an ultraviolet ray.

10. A housing of an optical scanning device with a mirror, wherein a bonding part to which a mirror is bonded forms a convex-concave shape by a first surface configured to contact a bonding surface of a mirror and a surface configured to contain a second surface configured to intersect the first surface, and the convex-concave shape has a knurl shape.

11. The housing as claimed in claim 10, wherein an intersectional line of the first surface and second surface is generally orthogonal to a straight line connecting portions of a bonding surface of a mirror for a housing which portions are most distant from each other.

12. The housing as claimed in claim 10, wherein the second surface has an inclination angle of 30 to 90 degrees with respect to the first surface.

13. The housing as claimed in claim 10, wherein depths of concave portions which form the knurl shape are uniform.

14. The housing as claimed in claim 10, wherein the knurl shape is formed by transcription of a mold pattern.

15. An optical scanning device which has a housing as claimed in claim 10.

16. An image forming apparatus wherein an optical scanning device as claimed in claim 15 is installed.