The invention relates to a cambering printing machine, in particular to a high-speed cambering printing machine which can automatically proof the version.
PA seccotine has strong oil resistance, acid resistance and alkali resistance, with which can protect the printing machine from the erosion of fountain solution.
But around the 1450s, inventor Johannes Gutenberg introduced the printing press to Europe, likely influenced by rumors of the printing machines in Asia.
He used a small printing machine to publish a newspaper. He sold copies of the newspaper to the other children in school, but he did not earn much money from the project.