English Flow Blue China
a brief history

      Grammytique.com                                                                                                              March  2000

A Brief History of Flow Blue China


    At the dawn of the 17th Century, Western Civilization began to get its first detailed glimpse into the hidden empire of China. Along with this contact came stories from far-off East Asia igniting curiosity and fascination for the mysterious Far East. The Chinese influence on Western art and culture had begun. Fine Chinese porcelain began to trickle back to England, where it was highly prized and valued. Only the elite could even begin to think of owning such china.
    Chinese porcelain was characterized by deep blue, hand-painted designs, usually landscapes or buildings (pagodas and the like), on a brilliant white ware. It took English potters nearly a century to perfect an emulation of this porcelain. The use of cobalt oxide as an underglaze was first employed in the 1500's. The Chinese discovered that this metal, brown on application, would produce a beautiful deep blue when fired at the high temperatures required by porcelain. It was the only chemical compound known to withstand these temperatures. Hence the famous Chinese blue and white porcelain was born.

In the middle of the 18th Century, English potters had finally perfected the use of cobalt oxide at high temperatures. To emulate the white Chinese porcelain, they developed a kind of salt-glaze earthenware, which was far whiter than ordinary stoneware. This marked a major economic advancement of the "china" industry in England; mimics of the extremely expensive Chinese porcelain could be made available to the middle classes at much less production cost. The earliest English blue and white china and porcelain, from the mid-1700's are of course museum pieces today; hand-painted, with sharp oriental motifs.

    The favorable economics, however, were even further increased in the mid-1700's when the process of transfer printing of the applied designs and pictures was invented. The application of transfer printing to the blue and white English earthenware was first accomplished at the Worcester factory in the 1760's. The process of transfer printing, where the same design could be economically applied to any number of pieces, and the perfecting of the Chinese underglazing of the deep blue cobalt oxide brought about a revolution in the English ceramics industry.
    It was in the midst of this revolution that Flow Blue was born. Great care was needed to keep the borders of the transfer patterns' seams from becoming overly obvious and unattractive. The idea of flowing the blue over these areas was employed to hide these flaws (in addition to hiding mold flaws, glaze defects, etc.). This motif

Two examples of Ming Dynasty Chinese Blue & White porcelain.  English potters tried for nearly a century to emulate this beautiful ceramics but lacked the brilliant white porcelain clays and had difficulty obtaining firing quality with the cobalt oxide used for the high-temperature blue pigment.  Notice the sharp, crisp quality of the design.

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