{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8537439","patent":{"patent_number":"US-8537439","title":"Print calibration processing apparatus, image forming apparatus, print calibration processing method and image forming method","assignee":null,"inventors":[],"filing_date":"2011-08-09T00:00:00.000Z","publication_date":"2013-09-17T00:00:00.000Z","cpc_codes":["H04N","H04N"],"num_claims":16,"abstract":"A print calibration processing apparatus includes a test image output section configured to outputs plural patches for gradation characteristic generation to an image forming section, a gradation characteristic data generation section configured to use, as a read object, a test chart obtained by printing the test images on both the sides of the print sheet by the image forming section while shifting print positions of the test images in a front and back direction, reads the images on a first and second side of the test chart, and generates gradation characteristic data of front test images on the first side and the second side and gradation characteristic data of show-through test images on the first and second side, a correction data generation section configured to determine a correction value of maximum gradation based on gradation characteristics of the front and the show-through test images, and a correction section configured to correct gradation of image data."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Print calibration processing apparatus, image forming apparatus, print calibration processing method and image forming method","description":"A print calibration processing apparatus includes a test image output section configured to outputs plural patches for gradation characteristic generation to an image forming section, a gradation char","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8537439","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-8537439","citation_suggestion":"Patentable. \"Print calibration processing apparatus, image forming apparatus, print calibration processing method and image forming method\" (US-8537439). https://patentable.app/patents/US-8537439","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8537439","json":"https://patentable.app/api/llm-context/US-8537439","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T20:30:07.321Z"}