To a large extent the history of playing card manufacturing reflects the history of illustration printing. The early playing card industry in Germany may have had a little boost in business from the church. When Pope Boniface IX (1389-1404) extended the grant of indulgences for pilgrimages to locations in addition to Rome, Cologne and Munich, the number of pilgrims increased since they had more options and shorter distances for a pilgrimage to gain remission for their sins. So the demand for printed religious tracts and indulgences also increased. The practice of stenciling the colors on to wood block printed images even gave rise to a German saying: Alle zwolf Apostle auf einen streich machen -To paint all the apostles in one stroke.
Thus, the same printing presses that were supplying sinners with playing cards were often also printing biblical scenes marketed to pilgrims, thus giving a boost to the German printing trade overall, and probably helping it become one of the major producers of playing cards in Europe during the 1400's. It also seems that Germany's the first paper mills started were built in the 1390's. So availability of more inexpensive paper to replace parchment was growing just as cards were spreading across Europe and helped make playing cards affordable to the general public.
Although German printers experimented with a wide range of suit signs, cards using the primary traditional German suits of bells, acorns, leaves and hearts can still be found today. The early decks were produced through wood-block printing and then stencils were used to add colors. One of the problems with those symbols was that they needed black outlines and detail lines to make it clear what they represented. Also, many early German cards had little incidental illustrations on every card in the deck, thus all of the cards in a deck needed at least a two-step printing process.
French suit signs appeared about the 1480's, and because they were simple one-color shapes and included no additional illustrations, all the pip cards could printed quickly, with a couple of strokes of a stencil brush instead of having to print the black outlines, wait for the ink to dry, and then stenciling additional colors to fill in the details of every card. Only the 12 face cards in a French deck needed more than one step to be printed. This made French suited cards quicker and cheaper to print.
As a result, during the 1500's France became a major exporter of cards to England as well as various areas of continental Europe. By the 30 Years War (1618-1648) France had even taken over exporting cards to several countries that had previously used German-suited cards probably by virtue of the lower cost of production for French decks, as well as the fact that simpler designs made them easier to recognize quickly, especially in a dark tavern, or candle-lit room.
The arms of the "Worshipful Company of Makers of Playing Cards" one of the early Trade Guilds in the City of London. Originally founded as the "Mistery of Makers of Playing Cards of the City of London" by a royal Charter granted by King Charles I in 1628. On 27th November 1792 the Court of Aldermen granted the Company its Livery.Livery Companies developed out of the medieval guilds of London. Guilds originally evolved from a religious base, as craftsmen in specific trades congregated in certain neighborhood parishes and provided mutual aid and protection for their members as well as sponsoring various activities during saints' days, or passion plays. Gradually, economic considerations took over and the guilds main role became the regulation of standards for their craft, including product quality, pricing and the training of apprentices.
Today the the principal activities of the Company today are civic, charitable and social. Their website can be foun at http://www.makersofplayingcards.co.uk/


The illustration below shows a single sheet of face cards and a stencil for coloring the cards. A different stencil was used for each color. At the bottom right is a sorting box to store the cut cards, and help colate the decks.

A close-up of the press and stove for making stiffening past, a mixture of flour and starch.