Table schema:
CREATE TABLE table_10528691_4 (print_resolution__dpi__resolution_is_given_in_dots_per_inch__dpi_ VARCHAR, introduction VARCHAR)

Question: What is the print resolution (FPI) for December 2002?
SQL: SELECT print_resolution__dpi__resolution_is_given_in_dots_per_inch__dpi_ FROM table_10528691_4 WHERE introduction = "December 2002"