noun
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.
テープドライブの読み取りヘッドが汚れていると、データを正しく読み取れない。
If the read head of the tape drive is dirty, it cannot read data correctly.