Keio Inokashira Line
The 1000 series were initially built by Tokyu Car Corp. The type was introduced in 1995, and was the first new rolling stock introduced on the Keio Inokashira Line in 33 years, after the 3000 series of 1962. It was the first type on the Inokashira Line to feature 20 m cars with four pairs of doors per side.