Printing was a tedious process as the typographs had to be proof read multiple times and it was not so easy to just correct something. It required either the wooden or ceramic block to be changed in order to have a better font or improve clarity. Every time the block had to be washed and reused.
In the year 1439, a goldsmith by the name Gutenberg invented a lead alloy based block which suited printing well. This is still in use even today and the typography could be very well defined in these blocks. These could be used to print multiple books at the same time. This was mainly responsible for creating a revolution in printing and even the famous first Bible printed is widely known as Gutenberg bible.
Though this was a major advancement, still some special characters and bigger decorative fonts had to be hand lettered later by a scribe. Thus there was still scope for improvement.
Various styles of typefaces came into existence, like the gothic typeface that was popular in Italy, Spain, and Germany. Roman inscription types were also widely used in Europe as this looked more like hand writing. The italics that are widely used even today also came into existence. Based on different styles of writing followed many parts of Europe and Asia had different fonts and thus the world was already having a collection of various typographic fonts by the end of the medieval period and the time was ripe for modern technology to boost their usage.