PATENT CLAIM ANALYSIS

Application Number: 15874568
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-07
Patent Classification: ["399", "004000"]

Abstract:
An image forming apparatus includes: an image carrier on which an image is formed; a light source that generates a light beam; an optical scanner that executes scanning of the light beam; a reflection surface identifier that identifies each reflection surface of a rotary polygon mirror; a sub-scanning direction driver that relatively moves the image carrier and the light beam to each other; a storage that stores first jitter information; a photodetector that detects scanning of the light beam; a measurement device that generates second jitter information; and a hardware processor that uses the first and second jitter information to change a frequency of a write clock and adjust a phase of the write clock, wherein the hardware processor obtains a correction characteristic for a dot position shift, and changes the frequency of the write clock and adjusts the phase of the write clock.

Claim (Index 2):
The image forming apparatus according to  claim 1 , wherein\n the hardware processor: when a position in the main scanning direction is X and a dot position shift is Y, approximates a position shift based on the first jitter information by a straight line by an approximation equation Y=aX+b; when a dot position shift according to the first jitter information at an end position Xeos in the main scanning direction is Yeos, a dot position shift according to the second jitter information at the end position Xeos in the main scanning direction is Y\u2032eos, a slope a\u2032 of an equation approximating a shift amount in the correction characteristic is a\u2032=(Y\u2032eos\u2212Yeos)/Xeos+a, and an intercept b\u2032 of the equation approximating the shift amount in the correction characteristic is b\u2032=a\u2032*X 1 +b, approximates the correction characteristic by a straight line by an approximation equation Y\u2032=a\u2032X+b\u2032; and changes the frequency of the write clock by a\u2032, and adjusts the phase of the write clock by b\u2032.

Metadata:
- Claim Count in Document: 9.0
- Percentile: 86.0
- Lexical Diversity: 2.16667
- Patent Class: 399.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['10197892', '12275787', '15466582', '11822820', '15000854']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8007246822684373
- 35 USC 102 Novelty (BERT): 0.5061926006315483
- Combined Prediction Score: 0.7712714741047485
- Mean Citation Score: 232.97013
- Max Citation Score: 252.02989
- Similarity Product: 158.74235571301102

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

Dataset: test