Rokuro
Porcelain
Bone-china
Stone Earthen

Clay
Mixed up mineral stones by ceramic stone, kaolin, feldspar, diatomaceous, slica, etc and additionally old, particular clay are added for smooth shaping up. Mixed up clay with over 25% of bone-ash, and other minerals as same as porcelain. Mixed ceramic stone with other minerals as same as porcelain.



Ceramic clay only, or, mixed with kaolin, feldspar, slica and limestone.



Transparent

Hold

Much hold

Non

Non

Peneration

Non

Non

Non

Hold

Basic Color

White

White, or Creamy white
colored colored

Baking
Pre-firing in 850c
Fring in 1300c.temp.
Pre-baking in 850c
Firing in 1300c.temp

Again,firing in 1050c, after Yuyaku glazing.
Pre-firing in 850c
Firing in 1300c.temp


Pre-firing in 850c
Firing in 1250c.temp

for Oribe, Shno, Kiseto

Etsuke
(Pattern)
(Paint)
The products, in generally, used to be printed, paint, patterned in prior of Yuyaku glazing. called "Sometsuke". Doing after Yuyaku is called "On Glaze,"  Doing after once firing and refiring with low temp. around 100c, is" In Glaze", Also, "Ua-Etsuke" , doing as same as In Glaze, but in refiring with high temp. aound 750c. Some of designs are shown in Design page, in thousands variations of "Etsuke",for your information.

Yuyaku
(Glaze)
It is popular for porcelain to use transperent Yuyaku mixed with solvent by Natural ash, Talcum, Lime Most of factories use Flit Yuyaku, to keep transparent in low temp. firing. Natural Yuyaku are used to keep a natural character of foundation. Natural ash, is the most useful.


Various and traditional Yuyaku(Glazes) have been used through the history.
Also, factories use such Yuyaku convinced to each foundation


Remarks
It makes metaric sound when to beat.
The material mostly is used for Western table ware
Called "Fine Bone China" obtains over 50% of bone ash and that has creamy white color in soft touch also, has much tranparency
It is called as of "Stone", that has no peneration, non transparent, and non white color. Bizen, Banko, Tokoname, is famous in Japan