Ditoher (1985) points out brand image is not the
characteristics of individual products, but the over all
impression of brand in the mind of consumers. Keller
(1993) thinks brand image is a major element of brand
equity, that is, the product valve of brand in the mind of
consumers. Nandan etc (2005) study the relations
between brand loyalty and the connection of brand
consistency and brand image. They think the good
coordination between brand consistency and brand image
can improve brand loyalty of consumers effectively.
Chinho.etc(2000) investigate the purchase situation of
1600 consumers through telephone, and they find that
enterprise can improve purchase behavior and brand
loyalty through building a better brand image.
Brand image must depend on the product itself,
including functions, features, reliability, durability,
appearance and service and other quality factors. Under
normal circumstances, the better brand image is, the more
favorable to brand extension. In short, brand image can
form key reasons of purchase, and becomes the
foundation of brand loyalty.