Title: Newspaper
Content:  The first mechanical, movable type printing that allowed the mass production of printed books was invented by Johann Gutenberg around 1450. In the 50 years after Gutenberg started printing, an estimated 500,000 books were in circulation, printed on about 1,000 presses across the continent. Gutenberg's invention was a simple device, but it launched a revolution marked by repeated advances in technology and, as a result, a popularization of the ideals of liberty and freedom of information exchange. The emergence of the new media in the 17th century has to be seen in close connection with the spread of the printing press from which the publishing press derives its name. The German-language Relation aller Fürnemmen und gedenckwürdigen Historien, printed from 
Title: Schweipolt Fiol
Content:  The world's first movable type printing technology was invented and developed in China by the Han Chinese printer Bi Sheng between the years 1041 and 1048. In the West, the invention of an improved movable type mechanical printing technology in Europe is credited to the German printer Johannes Gutenberg in 1450. The exact date of Gutenberg's press is debated based on existing screw presses. Gutenberg, a goldsmith by profession, developed a printing system by both adapting existing technologies and making inventions of his own. His newly devised hand mould made possible the rapid creation of metal movable type in large quantities Johannes Gutenberg's work on the printing press began in approximately 1436 when he partnered with Andreas Dritzehn—a man he had previously instructed 
Title: Johannes Gutenberg
Content:  Johannes Gensfleisch zur Laden zum Gutenberg (c. 1400 – 3 February 1468) was a German inventor, printer, publisher, and goldsmith who introduced printing to Europe with his mechanical movable-type printing press. His work started the Printing Revolution in Europe and is regarded as a milestone of the second millennium, ushering in the modern period of human history. It played a key role in the development of the Renaissance, Reformation, Age of Enlightenment, and Scientific Revolution, as well as laying the material basis for the modern knowledge-based economy and the spread of learning to the masses. While not the first to use movable type in the world, in 1439 
Title: Printing
Content:  Around 1450, Johannes Gutenberg introduced the first movable type printing system in Europe. He advanced innovations in casting type based on a matrix and hand mould, adaptations to the screw-press, the use of an oil-based ink, and the creation of a softer and more absorbent paper. Gutenberg was the first to create his type pieces from an alloy of lead, tin, antimony, copper and bismuth – the same components still used today. Johannes Gutenberg started work on his printing press around 1436, in partnership with Andreas Dritzehen – whom he had previously instructed in gem-cutting – and Andreas Heilmann, the owner of a paper mill. Compared to woodblock printing, movable type page setting and printing using a press was faster and more durable. Also, the metal type pieces were sturdier and the lettering more uniform, leading to typography and fonts. The high quality and relatively low price of the Gutenberg Bible (1455) established the superiority of movable type for Western languages. The printing press rapidly spread across Europe, leading up to the Renaissance, and later all around the world. Gutenberg's innovations in movable type printing have been called the most important invention of the second millennium.
Title: History of printing
Content:  A printing press is a mechanical device for applying pressure to an inked surface resting upon a medium (such as paper or cloth), thereby transferring an image. The systems involved were first assembled in Germany by the goldsmith Johannes Gutenberg in the mid-15th century. Printing methods based on Gutenberg's printing press spread rapidly throughout first Europe and then the rest of the world, replacing most block printing and making it the sole progenitor of modern movable type printing. As a method of creating reproductions for mass consumption, the printing press has been superseded by the advent of offset printing. Johannes Gutenberg's work in the printing press began in 
Title: Global spread of the printing press
Content:   The global spread of the printing press began with the invention of the printing press with movable type by Johannes Gutenberg in Mainz, Germany c. 1439. Western printing technology was adopted in all world regions by the end of the 19th century, displacing the manuscript and block printing. In the Western world, the operation of a press became synonymous with the enterprise of publishing and lent its name to a new branch of media, the "press" (see List of the oldest newspapers).
Title: Global spread of the printing press
Content:   Gutenberg's first major print work was the 42-line Bible in Latin, printed probably between 1452 and 1454 in the German city of Mainz. After Gutenberg lost a lawsuit against his investor, Johann Fust, Fust put Gutenberg's employee Peter Schöffer in charge of the print shop. Thereupon Gutenberg established a new one with the financial backing of another money lender. With Gutenberg's monopoly revoked, and the technology no longer secret, printing spread throughout Germany and beyond, diffused first by emigrating German printers, but soon also by foreign apprentices.
Title: Literature
Content:  Publishing became possible with the invention of writing, but became more practical with the invention of printing. Prior to printing, distributed works were copied manually, by scribes. The Chinese inventor Bi Sheng made movable type of earthenware c. 1045. Then c.1450, separately Johannes Gutenberg invented movable type in Europe. This invention gradually made books less expensive to produce and more widely available. Early printed books, single sheets and images which were created before 1501 in Europe are known as incunables or incunabula. "A man born in 1453, the year of the fall of Constantinople, could look back from his fiftieth year on a lifetime in which about eight million books had been printed, more perhaps than all the scribes of Europe had produced since Constantine founded his city in A.D. 330." Eventually, printing enabled other forms of publishing besides books. The history of modern newspaper publishing started in Germany in 1609, with publishing of magazines following in 1663.
Title: Letterpress printing
Content:   Movable type was first invented in China using ceramic type in 1040 AD during the Northern Song Dynasty by the inventor Bi Sheng (990–1051). Johannes Gutenberg is credited with the development in the western hemisphere, in about 1440, of modern movable type printing from individually cast, reusable letters set together in a "forme" (frame or chase). Gutenberg also invented a wooden printing press, based on the extant wine press, where the type surface was inked with leather-covered ink balls and paper laid carefully on top by hand, then slid under a padded surface and pressure applied from above by a large threaded screw. It was Gutenberg's "screw 
Title: Printing press
Content:   A printing press is a mechanical device for applying pressure to an inked surface resting upon a print medium (such as paper or cloth), thereby transferring the ink. It marked a dramatic improvement on earlier printing methods in which the cloth, paper or other medium was brushed or rubbed repeatedly to achieve the transfer of ink, and accelerated the process. Typically used for texts, the invention and global spread of the printing press was one of the most influential events in the second millennium. In Germany, around 1440, goldsmith Johannes Gutenberg invented the printing press, which started the Printing Revolution. Modelled on the design of existing screw presses, a single Renaissance printing press could produce up to 3600 pages per workday, compared to forty by hand-printing and a 

Question: when was the printing press invented by gutenberg?
Answer: This suggests that by 1438 Gutenberg and Dritzehen had in all probability already invented a printing process using moveable type (separate pieces of wood or metal for each letter of the alphabet).