US 12,083,804 B2
Inkjet printing apparatus and control method of the inkjet printing apparatus
Toshiaki Tokisawa, Kawasaki (JP); Yumi Mukoyama, Kawasaki (JP); Kyoshiro Okude, Kawasaki (JP); Takashi Abe, Kawasaki (JP); and Takahiro Kiuchi, Fuchu (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Sep. 19, 2022, as Appl. No. 17/947,890.
Application 17/947,890 is a continuation of application No. 16/936,026, filed on Jul. 22, 2020, granted, now 11,577,522.
Application 16/936,026 is a continuation of application No. 16/022,311, filed on Jun. 28, 2018, granted, now 10,759,181, issued on Sep. 1, 2020.
Claims priority of application No. 2017-133782 (JP), filed on Jul. 7, 2017.
Prior Publication US 2023/0081423 A1, Mar. 16, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. B41J 2/175 (2006.01); B41J 2/165 (2006.01); B41J 2/18 (2006.01); B41J 2/245 (2006.01); B41J 29/02 (2006.01); B41J 29/38 (2006.01)
CPC B41J 2/17596 (2013.01) [B41J 2/16505 (2013.01); B41J 2/175 (2013.01); B41J 2/17566 (2013.01); B41J 2/18 (2013.01); B41J 2/245 (2013.01); B41J 29/02 (2013.01); B41J 29/38 (2013.01); B41J 2002/17579 (2013.01)] 53 Claims
OG exemplary drawing
 
1. An inkjet printing apparatus comprising:
an ink ejection unit having an ejection opening surface on which ejection openings for ejecting ink to a print medium are arranged in a direction intersecting a direction in which the print medium is conveyed, the ink being ejected at the time the print medium is being conveyed when the ink ejection unit prints an image on the print medium;
a tank storing the ink to be supplied to the ink ejection unit;
a supply flow path for supplying the ink from the tank to the ink ejection unit;
a supply pump provided in the supply flow path to supply the ink from the tank to the ink ejection unit;
a cap configured to cover the ejection opening surface;
a cap decompression pump connected to the cap and constructed to decompress the inside of the cap; and
a control unit configured to control to drive the cap decompression pump while the ejection opening surface being covered with the cap to supply ink to the ink ejection unit which the ink has not loaded to.