{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8509676","patent":{"patent_number":"US-8509676","title":"Perforation device, post-processing apparatus, and image forming system","assignee":null,"inventors":[],"filing_date":"2010-03-26T00:00:00.000Z","publication_date":"2013-08-13T00:00:00.000Z","cpc_codes":["H04N","H04N","H04N","H04N"],"num_claims":6,"abstract":"The above perforation device is equipped with a plurality of punches to punch holes on a sheet by a reciprocation motion; a holding board to hold the above punches in a line in the width direction of a sheet; a plurality of dies being arranged opposing to the above plurality of punches; two cranks being arranged at a drive shaft, rotate together with the above drive shaft, and being arranged with phases of an angle being displaced with each other in the shaft rotating direction; and two connection poles connecting with the above two cranks and the above holding board, wherein a differential perforation is carried out in such a manner that rotation of the above two cranks reciprocates the above punches, and during perforating cut-outs on a sheet, the above holding board reciprocates with phases at both ends being displaced, and the above plurality of punches carry out perforation of cut-outs with time difference from a punch at either end of the both ends to a punch at the other end successively."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Perforation device, post-processing apparatus, and image forming system","description":"The above perforation device is equipped with a plurality of punches to punch holes on a sheet by a reciprocation motion; a holding board to hold the above punches in a line in the width direction of ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8509676","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-8509676","citation_suggestion":"Patentable. \"Perforation device, post-processing apparatus, and image forming system\" (US-8509676). https://patentable.app/patents/US-8509676","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8509676","json":"https://patentable.app/api/llm-context/US-8509676","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T21:23:27.754Z"}