US 11,850,843 B2
Printing system
Akihiro Yamagata, Ibaraki (JP); Ryo Terakado, Ibaraki (JP); and Hirokazu Yabune, Ibaraki (JP)
Assigned to RISO KAGAKU CORPORATION, Tokyo (JP)
Filed by RISO KAGAKU CORPORATION, Tokyo (JP)
Filed on Mar. 2, 2022, as Appl. No. 17/684,863.
Claims priority of application No. 2021-038898 (JP), filed on Mar. 11, 2021.
Prior Publication US 2022/0288952 A1, Sep. 15, 2022
Int. Cl. B41J 11/00 (2006.01); B41J 3/54 (2006.01); B41J 13/00 (2006.01)
CPC B41J 11/0095 (2013.01) [B41J 3/543 (2013.01); B41J 11/007 (2013.01); B41J 13/0009 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A printing system, comprising:
a first printing part that prints on a medium;
a second printing part that is disposed downstream of the first printing part in a conveying direction of the medium and prints on the medium; and
a conveyance mechanism that conveys the medium printed on by the first printing part to the second printing part, wherein
the conveyance mechanism comprises:
a passage detection sensor that detects the leading edge and the rear edge of the medium;
a conveyor roller for conveying the medium; and
a resist roller that is disposed downstream in the conveying direction from the passage detection sensor and the conveyor roller, that is butted by the medium, and that conveys the medium slackened due to the butting, and
the printing system further comprises a controller configured to control the conveyor roller so that a slack amount of a subsequent medium is constant based on a difference between a detection time of the rear edge of a preceding medium detected by the passage detection sensor and a detection time of the leading edge of the subsequent medium detected by the passage detection sensor, wherein
the controller controls the conveyor roller by adjusting a first period in which a first conveyance speed of the conveyor roller is maintained from the detection time of the leading edge of the subsequent medium.