PATENT CLAIM ANALYSIS

Application Number: 16109584
Application Type: Utility
Filing Date: 2018-08
Publication Date: 2019-07
Patent Classification: ["358", "504000"]

Abstract:
An image forming apparatus of an embodiment comprises a printer unit to print a sheet with a plurality of single colors and generate a correction sheet including a plurality of single color regions at different positions between a first reference region and a second reference region. The first and second reference regions are a reference color. An image reading unit is configured to read the correction sheet. A processor is configured to calculate a shift amount in a main scanning direction of the printer unit for each single color region based on RGB luminance values obtained from the correction sheet by the image reading unit and to correct a printer scan position along the main scanning direction for each single color in the plurality of single colors corresponding to the single color regions using calculated shift amounts.

Claim (Index 4):
The image forming apparatus according to  claim 1 , wherein the processor is configured to:\n calculate a center position of a single color region by:\n acquiring luminance values for red (R), green (G), blue (B) at a plurality of coordinate positions along the main scanning direction through the single color region, \n determining a maximum value in the luminance values for R, a maximum value in the luminance values for G, a maximum value in the luminance values for B, \n calculating a difference value for each of R, G, B at each coordinate position in the plurality of coordinate positions by:\n subtracting the luminance value for R at the coordinate position from the maximum value for R, \n subtracting the luminance value for G at the coordinate position from the maximum value of G, and \n subtracting the luminance value for B at the coordinate position from the maximum value of B, \n \n calculating a summed difference value for R by summing the difference values for R at each coordinate position, \n calculating a summed difference value for G by summing the difference values for G at each coordinate position, \n calculating a summed difference value for B by summing the difference values for B at each coordinate position, \n calculating:\n a product value for R at each coordinate position by multiplying the difference value for R at the coordinate position by the luminance value for R at the coordinate position, \n a product value for G at each coordinate position by multiplying the difference value for G at the coordinate position by the luminance value for G at the coordinate position, and \n a product value for B at each coordinate position by multiplying the difference value for B at the coordinate position by the luminance value for B at the coordinate position, \n \n calculating a summed product value for R by summing the product values for R at each coordinate position, \n calculating a summed product value for G by summing the product values for G at each coordinate position for each G, \n calculating a summed product value for B by summing the product values for B at each coordinate position, \n dividing, respectively, the summed product values for R, G, B by the summed difference values of R, G, B; and \n correct a position of the single color region by:\n calculating an inclination of the correction sheet from center positions of the first and second reference regions, \n calculating a theoretical center position of the single color region by taking the inclination into account, and \n setting a positional difference between the theoretical center position and the center position of the single color region as the shift amount.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 96.0
- Lexical Diversity: 2.10448
- Patent Class: 358.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['14682572', '15274670', '12767599', '15273810', '12801034']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4565223688138274
- 35 USC 102 Novelty (BERT): 0.4769967883818432
- Combined Prediction Score: 0.458569810770629
- Mean Citation Score: 131.518012
- Max Citation Score: 135.53061
- Similarity Product: 98.9088154923892

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

Dataset: test