Created in China, before being further developed in Europe in the 15th century by Johannes Gutenberg and his invention of the Gutenberg press, the printing press revolutionized society there.
A signature is usually simply the name of somebody written in a stylized fashion. That is not really necessary, however. It is considered a valid signature as long as it adequately records the intent of the parties involved in a contractual agreement. Usually, but not necessarily, a pen makes this mark.
Woodblock printing, which appeared in China before 220 AD, was the earliest known form of printing applied to paper. The movable type invented by Bi Sheng around 1040 AD and the printing press invented by Johannes Gutenberg in the 15th century are also later developments in printing technology.
Re-create the PDF if you have the original source file from which the PDF was created. In the original program, open the file (like a word processor or a page layout program). Select File > Print, then select the option to save the file as a PDF. Open your new PDF file and try to print it again.
Gutenberg was a German artisan and inventor and is best known for the Gutenberg press, his innovative printing press machine that used a movable form. It remained the standard up until the 20th century. Gutenberg made printing inexpensive.
Throughout the nineteenth century, lithography was primarily a graphic art form and, as such, still holds a high artistic reputation. Lithographs are original artworks of artists and are typically signed, while offset lithographic printing and reproductions do not have a signature.
If you have the original source file from which the PDF was created, re-create the PDF. Open the file in the original program (like a word processor or a program for page layout). Select File > Print, then choose the option to save a PDF file. Please open the new PDF file and try printing it again.
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