Fare Adjustment Machines Norikoshi
Fare Adjustment Machines のりこし清算機
Fare adjustment machines (norikoshi seisanki) can be seen at all Japanese train stations and are a wonderful idea. They are handy if you have not got enough money on your IC Card (Suica, Pasmo, manaca etc) and your card does not et you through the ticket gate.
Fare adjustment in Tokyo (のりこし清算) If you have bought the wrong ticket or decide to change your destination in mid-journey, you can pay any excess fare at one of these machines, rather than face an on-the-spot-fine and a criminal record as you might in the UK for example. The machines are fairly simple to use and may even have instructions in other languages. 
JR Fare adjustment machine (norikoshi seisanki) in Ochanomizu Station, Tokyo
How To Use
Just place your ticket or IC card (Pasmo, Suica, manaca etc) in the slot and the machine calculates your excess fare. Pay the excess with your charge card, notes or coins and the machine issues you with a new ticket to pass the barrier or allows you to charge your IC card the excess. Simple, efficient...just the ticket. 
Fare Adjustment Machine (norikoshi seisanki) in Tokyo for the Tsukuba Express from Akihabara Station to Tsukuba Station Japan Job Search
Fare Adjustment Machine in Kobe, Hyogo Prefecture 
Kyoto Fare Adjustment Machine 
Using the machine at Akaike Station on the Tsurumai Line of the Nagoya subway
Fare adjustment machines can be seen at all Japanese train stations. Place your ticket or IC card into the machine and pay the excess.
