The words "Pizza Time Theatre" were dropped from the logo and it simply became "Chuck E. Cheese's".
The changes to the logo were a different font for "Chuck E. Cheese's" and the addition of the word "Pizza".
In 1995, a new logo was introduced featuring a more kid-friendly looking Chuck E. Cheese and the word "Pizza" was dropped. Also, the name was reverted back to the one being used from 1984. This logo is still used at some locations.
In July 2012, Chuck E. was given another makeover to look a lot younger and was animated in CGI.