PATENT CLAIM ANALYSIS

Application Number: 16219904
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-06
Patent Classification: ["399", "069000"]

Abstract:
An image forming apparatus includes a width-information acquisition unit, an environmental-condition detecting unit, a heat roller, an end-portion-temperature-detecting unit, a first heater, a second heater, a first control unit, a first control unit, a correction-value derivation unit, an extracting unit, and a second control unit. The first heater heats a center portion of the heat roller. The second heater heats the end portion of the heat roller. The first control unit controls electric power supplied to the first heater with a first duty ratio. The correction-value derivation unit derives a correction value for the temperature condition based on an environmental condition. The extracting unit reflects the correction value for the temperature condition to extract a second duty ratio from among a plurality of second duty ratios. The second control unit controls the electric power supplied to the second heater with the data of the extracted second duty ratio.

Claim (Index 1):
An image forming apparatus that forms an image on a paper sheet, comprising:\n a developing unit that forms a toner image on a paper sheet; a width-information acquisition unit that acquires information of a width of the paper sheet; an environmental-condition detecting unit that detects environmental conditions at a time of image formation on the paper sheet; a heat roller that has a cylindrical shape, the heat roller contacting the paper sheet on which the toner image is formed by the developing unit, so as to fix the toner image on the paper sheet; an end-portion-temperature-detecting unit that detects a temperature of an end portion of the heat roller in a longitudinal direction; a first heater located inside the heat roller, the first heater heating a center portion of the heat roller in the longitudinal direction; a second heater located inside the heat roller, the second heater heating the end portion of the heat roller in the longitudinal direction; a first control unit that controls electric power supplied to the first heater with a first duty ratio, the first duty ratio being a duty ratio of the electric power supplied to the first heater; a storage unit that stores a plurality of paper-sheet-width conditions based on the width of the paper sheet detected by the width-information acquisition unit, a plurality of temperature conditions corresponding to a difference between the temperature of the end portion detected by the end-portion-temperature-detecting unit and a predetermined target temperature, and a plurality of items of data of second duty ratios that are derived based on the first duty ratio, the second duty ratio being a duty ratio of electric power supplied to the second heater; a correction-value derivation unit that derives a correction value for the temperature condition based on the environmental conditions detected by the environmental-condition detecting unit; an extracting unit that reflects the correction value for the temperature condition derived by the correction-value derivation unit to extract the data of the second duty ratio from among the plurality of items of data of the second duty ratios stored in the storage unit; and a second control unit that controls the electric power supplied to the second heater with the data of the second duty ratio extracted by the extracting unit.

Metadata:
- Claim Count in Document: 9.0
- Percentile: 98.0
- Lexical Diversity: 2.89474
- Patent Class: 399.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15264698', '14674987', '11289691', '15135027', '13800093']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8104448153041168
- 35 USC 102 Novelty (BERT): 0.4778658402484969
- Combined Prediction Score: 0.7771869177985549
- Mean Citation Score: 219.977966
- Max Citation Score: 229.11673
- Similarity Product: 173.6142888808817

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

Dataset: test