Liquid electrophotographic imaging apparatus upgrade support system using network and method for upgrading data for calculating concentration of developer

A method for upgrading developer density calculating data of a liquid electrophotographic imaging apparatus upgrade support system using a network containing an upgrade support server including a database for storing information on developer products in order to provide a service of supporting an upgrade of data to calculate densities with respect to developer products and an upgrade support engine connected to said network for supporting access to and search of said database, and a liquid electrophotographic imaging apparatus including communication means for connecting to said upgrade support server through said network, searching said information on said developer products stored in said database by exchanging information with said upgrade support engine, and downloading said density calculating data with respect to a desired developer comprising the steps of:

• (a) determining whether said density calculating data with respect to said developer to be used is in said liquid electrophotographic imaging apparatus;
• and
• (b) downloading said density calculating data with respect to said developer to be used from said database to said liquid electrophotographic imaging apparatus through said network when it is determined that there is no density calculating data with respect to said developer to be used in step (a).