{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8531727","patent":{"patent_number":"US-8531727","title":"Image forming apparatus and tone characteristics correction method","assignee":null,"inventors":[],"filing_date":"2009-09-09T00:00:00.000Z","publication_date":"2013-09-10T00:00:00.000Z","cpc_codes":["H04N"],"num_claims":18,"abstract":"An image forming apparatus includes, for example, a pattern generating unit, image processing unit, image recording unit, and correction unit. The pattern generating unit generates a test pattern signal used to form a test pattern including a plurality of tone patches differing in tonality from each other. The image processing unit performs image processing on the test pattern signal according to a predetermined image processing mode out of a plurality of image processing modes related to tone characteristics. The image recording unit records the test pattern on a recording medium according to the test pattern signal processed by the image processing unit. The correction unit corrects the image processing mode based on a result of reading the test pattern recorded on the recording medium. In particular, the image recording unit records a background pattern around periphery of the test pattern."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Image forming apparatus and tone characteristics correction method","description":"An image forming apparatus includes, for example, a pattern generating unit, image processing unit, image recording unit, and correction unit. The pattern generating unit generates a test pattern sign","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8531727","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-8531727","citation_suggestion":"Patentable. \"Image forming apparatus and tone characteristics correction method\" (US-8531727). https://patentable.app/patents/US-8531727","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8531727","json":"https://patentable.app/api/llm-context/US-8531727","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T12:45:02.723Z"}