{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8508807","patent":{"patent_number":"US-8508807","title":"Image reading apparatus, black correction executing method, and a computer-readable medium storing black correction executing program","assignee":null,"inventors":[],"filing_date":"2009-09-28T00:00:00.000Z","publication_date":"2013-08-13T00:00:00.000Z","cpc_codes":["H04N"],"num_claims":16,"abstract":"The present invention provides an image reading apparatus that includes: a photoelectric sensor including plural reading pixels aligned in one direction and output an electric signal depending on the amount of light from an image on the document; a read control section that reads a document image with the photoelectric sensor in accordance with a read instruction, and obtains image data; a black correction section that performs a black correction to adjust an output under dark condition of each reading pixel to a value within a predetermined range, the output under dark condition being an electric signal output when the amount of light input is zero; and a black correction execution determining section that determines whether to perform the black correction, when the read interval between each two document sheets of the multi-page document is equal to or shorter than a predetermined period of time."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Image reading apparatus, black correction executing method, and a computer-readable medium storing black correction executing program","description":"The present invention provides an image reading apparatus that includes: a photoelectric sensor including plural reading pixels aligned in one direction and output an electric signal depending on the ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8508807","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-8508807","citation_suggestion":"Patentable. \"Image reading apparatus, black correction executing method, and a computer-readable medium storing black correction executing program\" (US-8508807). https://patentable.app/patents/US-8508807","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8508807","json":"https://patentable.app/api/llm-context/US-8508807","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T00:35:41.298Z"}