invariably; like clockwork; with perfect regularity
Used when the same thing happens repeatedly without any change, as if stamped from a mold. Often carries a nuance of monotony or predictability.
See also: 判で押したよう (はんでおしたよう)
He leaves the house at exactly the same time every morning, like clockwork.
この店の味は判で押したみたいにいつも同じだ。
The taste at this restaurant is always the same, with perfect regularity.
From 判 (seal/stamp) + で + 押した (pressed) + みたいに (like), literally 'like pressed with a seal', referring to the identical impressions made by a stamp.