PATENT CLAIM ANALYSIS

Application Number: 15878170
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-08
Patent Classification: ["358", "475000"]

Abstract:
An optical scanning device has a housing in which a duct surrounds a space from the deflector and its circumference to an outlet in insulation from the optical system, and guides gas from an inlet to the space. A positioning member is shaped as a pillar that protrudes from the floor of the duct towards the deflector and has a tip to contact with the deflector to locate the rotation axis of the polygon mirror at a position relative to the housing. The positioning member further limits a clearance between an outer surface of the deflector and the floor to secure therein a flow path of the gas.

Claim (Index 21):
An image forming apparatus comprising:\n an imaging unit forming a toner image on a sheet; and a fuser unit thermally fixing the toner image, the imaging unit including:\n a photoreceptor varying an amount of charge with an amount of exposure; \n an optical scanning device exposing the photoreceptor to a light beam and forming an electrostatic latent image on the photoreceptor; \n a developer converting the latent image to a visible image with toner; and \n a transfer device transferring the visible image converted by the developer from the photoreceptor to a sheet, \n the optical scanning device including:\n a light source; \n a deflector including a polygon mirror that, while rotating, reflects a beam from the light source to deflect the beam, a motor rotating the polygon mirror, and a body containing the polygon mirror and the motor, the body including a supporting section supporting the motor; \n an optical system focusing a beam reflected from the polygon mirror on the target surface; and \n a housing containing the light source, the deflector, and the optical system, including: \n an inlet allowing external air to enter the housing; \n an outlet allowing internal air to flow out of the housing; and \n a duct surrounding a space from the deflector and its circumference to the outlet in insulation from the optical system, and guiding gas from the inlet to the space, the duct having:\n a floor facing to an outer surface of the supporting section of the body of the deflector; and \n a positioning member shaped as a pillar that protrudes from the floor towards the deflector and has a tip to contact with the deflector to locate the rotation axis of the polygon mirror at a position relative to the housing, and to limit a clearance between the supporting section and the floor to secure therein a flow path of the gas from the inlet.

Metadata:
- Claim Count in Document: 4.0
- Percentile: 86.0
- Lexical Diversity: 1.80645
- Patent Class: 358.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['12013206', '11851544', '12574748', '14712106', '11790513']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4604931114709933
- 35 USC 102 Novelty (BERT): 0.4939773949739834
- Combined Prediction Score: 0.4638415398212924
- Mean Citation Score: 200.621378
- Max Citation Score: 210.50157
- Similarity Product: 156.48892012734532

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test