Lasted from around 1615 (Genna) to 1868 (end of Edo)
Early 伊万里: Thickly crafted, narrow foots, no biscuit-firing; shape inspired by Korean wares, motives by Chinese.
1650s: Thinly crafted, wide foot. Two styles:
藍九谷(あい くたに)(Cobalt 九谷) for simple blue-and-white porcelains
Old 九谷 for polychrome pieces from that time.
→ These 3 are so different from the following styles, that they used to be believed to be from 九谷 kilns, not 伊万里!
→ These 3 also born from a desire to imitate Chinese Ming ceramics.
Between 1660-1690 there was a kiln called 柿右衛門(かきえもん), that originally produced 藍九谷; but then later blue-white wares known as 柿右衛門.
If I google 柿右衛門, it's mostly polychrome pieces actually…
This style is represented by motifs of red maples, deers, horsetails…