{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8520271","patent":{"patent_number":"US-8520271","title":"Image reading apparatus and image forming apparatus provided with same","assignee":null,"inventors":[],"filing_date":"2010-06-02T00:00:00.000Z","publication_date":"2013-08-27T00:00:00.000Z","cpc_codes":["H04N","H04N","H04N","H04N","H04N","H04N","H04N","H04N"],"num_claims":18,"abstract":"In one embodiment, in a state in which a first scanning unit is positioned at a reading position below an original reading glass and a second scanning unit is positioned such that an original is not caused to travel between the original reading glass and a reading guide plate of a first reading portion, control is performed to selectively turn on or turn off each LED of an illumination portion of the first scanning unit to produce a shadow of paper dust, and detection is performed on variation in an output of a CCD corresponding to the shadow of the paper dust."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Image reading apparatus and image forming apparatus provided with same","description":"In one embodiment, in a state in which a first scanning unit is positioned at a reading position below an original reading glass and a second scanning unit is positioned such that an original is not c","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8520271","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-8520271","citation_suggestion":"Patentable. \"Image reading apparatus and image forming apparatus provided with same\" (US-8520271). https://patentable.app/patents/US-8520271","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8520271","json":"https://patentable.app/api/llm-context/US-8520271","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T04:23:36.890Z"}