公开(公告)号：US11210574B2

公开(公告)日：2021-12-28

申请号：US17049706

申请日：2018-11-05

Applicant: SCREEN Holdings Co., Ltd.

Inventor： Susumu Takahashi ,  Hiroyuki Kataoka ,  Satoshi Yasuda ,  Tetsuya Ishida

IPC: G06K15/00 ,  G06K15/02 ,  G06K15/16

Abstract: A printing apparatus includes: a mechanism transporting a print medium; a first sensor outputting a signal indicating the presence or absence of a first mark; a first determining unit determining, on a first surface, a position of a second mark and a print position of an image based on the output signal; a first print head printing the second mark and the image at the determined print positions; a second sensor outputting a signal indicating the presence or absence of the first and second marks; a second determining unit locating a position of a predetermined one of the first and second marks, based on the signal output from the second sensor, and determines, on a second surface of the print medium, a print position of a target image based on the located position of the predetermined mark; and a second print head printing the target image at the determined print position.

公开(公告)号：US10661579B2

公开(公告)日：2020-05-26

申请号：US16224190

申请日：2018-12-18

Applicant: SCREEN HOLDINGS CO., LTD.

Inventor： Satoshi Yasuda ,  Tetsuya Ishida ,  Masayuki Nakano

IPC: B41J2/21

Abstract: A printing apparatus comprises: a transport mechanism that transports a recording medium; a first line head group including a first line head in number of N that ejects first ink; a second line head group including a second line head in number of M that ejects second ink; and a controller, where M is a natural number larger than N. The line heads form images along lines extending in a width direction along a surface of the recording medium by ejecting ink droplets from a plurality of nozzles aligned in the width direction. In a first printing step, the controller makes each of the first line head in number of N perform printing process on every N-th line, while making each of the second line heads in number of M perform the printing process on every M-th line.