Details of the decoration to be applied to the piece of ware. This should be supplied
as an original vector file (.eps) in PC format.
Bone China (Porcelain)
Bone China is a combination of typical ceramic clays and calcinated bone,
the resulting ware being immensely strong but also translucent in fired form. Not
to be confused with porcelain, this is derived through a much different mix of clays.
An all embracing phrase misused to mean earthenware and china. The definition of
ceramics is widely accepted as being pottery and china in all its
forms plus industrial ceramics, bricks and tiles, clay pipe, refractory brick,
ferrites and alumina in computers and electronics. Some materials in nuclear and
laser technologies also fall into the category of ceramics.
The image, pattern or text to be applied to the surface of the ware. The Mug Store
processes apply the decoration by either direct or transfer printing. The
design is supplied as artwork or is created by an art studio to a working brief.
By using individually separated screens, the image is applied to the moving body
of the ware by silk screen printing. The process requires careful screen
control, correct print material held in medium and accurate machine setting.
Basically composed of clay, often blended clays, and baked hard, the degree of hardness
depending on the intensity of heat. An Earthenware vessel is porous and a
glaze is applied to render the ware waterproof. If earthenware is fired at
a very high temperature the properties of some of the constituents change and the
vessel becomes non-porous (vitrification takes place and the ware is sometimes described
Transparent artwork to allow contact exposure of a light sensitive screen material.
In separations the film must register perfectly and the grade of film is important.
Films produced using printers with high heat elements (e.g. laser printers) can
vary and stretch, and distortion of images takes place. Films produced in different
machines, or even at different times, can result in poor registration and image
A smooth glassy coat applied to add colour and decoration plus hard non-porous surface.
Glazes are made from a combination of materials, principally powered glass and coloured
oxides. The methods of applying the glaze vary, but in firing, the glass softens
and flows over the surface of the underlying material to make a strong, permanent
Patterns of dots, dot sizes and shapes, the resulting patterns of which can give
lights and shades of an original image. Black and White photographs can be printed
A single printed piece of ware, produced in exactly the form proposed for bulk production.
The proof is submitted for approval to ensure correct interpretation of instructions
for ware shape and glaze, print instructions, artwork and colours.
By carefully filtering a coloured image into four separation colours (cyan, magenta,
yellow and black) the process colours, when printed in a precise combination of
dots and angles, visually recreate the image. Any artwork for this process must
be created according to very precise requirements and even any slight deviations
from the specification will produce unacceptable images and colour.
A randomly chosen printed piece of ware as a representative sample of a print and
A tightly stretched frame mounted fabric coated with a light sensitive emulsion.
Through exposure, an image yields a negative impression through which the print
substance can move to create the print. A separate screen is required for each colour
Breaking a multicoloured image into its print colours. Each resulting separation
is output on a piece of film or paper so that when realigned, through its registration
marks, it will recreate the full image. For screen printing separation processes,
the colours may touch each other but no overlaps (sometimes referred to as traps,
chokes or spreads) may be allowed. The exception to the rule is possibly black key
The printing of the separation colours onto paper and finally cover coated.
The resulting print adheres to the cover coat which can be separated from the paper
after immersion in water. The transfer can then be water slid into place
and left to dry. In firing, the overcoat burns away at a lower temperature,
leaving the required print in place.
To find out more about the decoration process