Electrophotography – Internal machine environment – Particle or contaminant control
Reexamination Certificate
2007-10-02
2007-10-02
Pham, Hai (Department: 2853)
Electrophotography
Internal machine environment
Particle or contaminant control
C347S224000
Reexamination Certificate
active
11169683
ABSTRACT:
An optical writing unit for use in an image forming apparatus, wherein the optical writing unit includes an optical system which generates a light beam to write an electrostatic latent image on an image carrying member of the image forming apparatus, and a casing which encases the optical system. The casing includes an opening portion and a transparent member which externally seals the opening portion and has a top surface higher than a surface of the casing with a predetermined height and an optical writing area through which the light beam emits.
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U.S. Appl. No. 11/492,882, filed Jul. 26, 2006, Namba.
Martinez, Jr. Carlos A.
Pham Hai
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