{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8510931","patent":{"patent_number":"US-8510931","title":"Method to reduce servo pattern runout on a prewritten disc","assignee":null,"inventors":[],"filing_date":"2001-10-17T00:00:00.000Z","publication_date":"2013-08-20T00:00:00.000Z","cpc_codes":["G11B","G11B"],"num_claims":11,"abstract":"A disc drive disc stack assembly and a method for forming the disc stack assembly to reduce servo pattern runout. The disc stack assembly includes a number of prewritten discs having a servo pattern and a disc alignment mark. The first step is to place a first disc about a spindle motor hub of the disc drive. The second step is to align a disc alignment mark of the first disc in relation to a direction of a biasing force. The third step is to apply the biasing force to the first disc to engage the first disc against the spindle motor hub. The fourth step is to repeat the first three steps for each remaining disc in the disc stack assembly. The final step is to clamp the prewritten discs with a disc clamp to secure the position of each prewritten disc relative to the spindle motor hub."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method to reduce servo pattern runout on a prewritten disc","description":"A disc drive disc stack assembly and a method for forming the disc stack assembly to reduce servo pattern runout. The disc stack assembly includes a number of prewritten discs having a servo pattern a","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8510931","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-8510931","citation_suggestion":"Patentable. \"Method to reduce servo pattern runout on a prewritten disc\" (US-8510931). https://patentable.app/patents/US-8510931","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8510931","json":"https://patentable.app/api/llm-context/US-8510931","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T16:27:09.479Z"}