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Floppy Disk Poke-Yokes

Floppy disks have many poka-yokes built in. One example is you cannot insert the disk into the drive completely if the disk is upside down. This is because of the corner notch [#1].

720k disks have no hole [#2] while HD disks have hole (mechanism senses)[#3].

Spring loaded shutter mechanism - Do you remember the old 5.25 inch floppies from the early to mid-1980’s? Failsafe disk surface protection [#4].

Slide Tab to protect against erasure. Mechanism senses [#5].

‘Precision’ alignment. Disk alignment holes and notches [#6] ensure the disk is properly aligned and also provides a ‘focus’ area for manufacturing.

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	The Deming PDCA Cycle	QMS Implementation	FMEA Information	APQP Information
Auditing Information	8-D Problem Solving	Statistics	Error Proofing (Poka Yoke)	Brainstorming
Identifying Waste	Pull Systems	Lead Time Reduction	Planned Maintenance	Quick Setup
Discovering Change	Process Capability - Cp vs. Cpk	Histogram Animation	Process Loop Animation	Taguchi Loss Function
		Fishbone / Cause and Effects Animation

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