{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-10523833","patent":{"patent_number":"US-10523833","title":"Image reading device including an illumination unit with first and second light guide bodies and an image forming apparatus including the same","assignee":null,"inventors":[],"filing_date":"2018-08-24T00:00:00.000Z","publication_date":"2019-12-31T00:00:00.000Z","cpc_codes":["H04N","H04N","H04N"],"num_claims":5,"abstract":"An image reading device includes a housing that is provided with a contact glass, a document cover, an illumination unit that is received in the housing, and a document size detection unit that performs a document size detection operation for detecting a size of a document by using light irradiated toward the document on the contact glass from the illumination unit when the document cover is switched to a closed state. The illumination unit includes a light guide body extending in a front and rear direction of the housing, a first light source that is disposed at a front side of the light guide body and emits incident light to the light guide body toward a rear side, and a second light source that is disposed at a rear side of the light guide body. In the document size detection operation, only the first light source is lighted."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Image reading device including an illumination unit with first and second light guide bodies and an image forming apparatus including the same","description":"An image reading device includes a housing that is provided with a contact glass, a document cover, an illumination unit that is received in the housing, and a document size detection unit that perfor","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-10523833","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-10523833","citation_suggestion":"Patentable. \"Image reading device including an illumination unit with first and second light guide bodies and an image forming apparatus including the same\" (US-10523833). https://patentable.app/patents/US-10523833","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-10523833","json":"https://patentable.app/api/llm-context/US-10523833","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T13:26:39.716Z"}