read head
Dated computing term for the component that reads data from magnetic tape, disk, or similar media. Modern usage is limited; often replaced by more specific terms like 磁気ヘッド or 読み取り部.
If the read head of the tape drive is dirty, it cannot read data correctly.
Compound of 読み取り (yomitori, 'reading') and ヘッド (heddo, from English 'head'). A straightforward technical term formed in the context of early computing and magnetic storage devices.