Patent ID: 7270392

Claim:
A printing apparatus comprising: a printing head for ejecting ink to a medium to carry out printing thereon; a side-reversing member for reversing the sides of said medium that is printed by said printing head; and a controller, wherein said controller is operative to set a waiting time for drying the ink ejected to said medium, before reversing said medium with said side-reversing member, according to: an amount of ink ejected by said printing head, an elapsed-time from when the ink was ejected by the printing head, and wherein said controller is operative to: divide a printing area into several areas and said amount of ink and said elapsed-time are measured for each divided printing area, calculate an amount of ink ejected to the divided area every time the printing head ejects ink to each divided area, and obtain a new accumulated value by adding the calculated amount of ink to a value obtained by multiplying a predetermined coefficient to an accumulated value previously obtained, and set the waiting time based on a final accumulated value that is obtained at an end of printing on the front side of said medium.