US 12,216,423 B2
Image forming system including varnish image forming apparatus
Taro Hanazato, Tokyo (JP); Yoshiro Tsukada, Chiba (JP); Masami Hano, Chiba (JP); Shingo Hirota, Ibaraki (JP); Toshiyuki Yamada, Tokyo (JP); Daisuke Katayama, Chiba (JP); and Kyohei Kikuchi, Ibaraki (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Aug. 3, 2023, as Appl. No. 18/229,868.
Claims priority of application No. 2022-125394 (JP), filed on Aug. 5, 2022.
Prior Publication US 2024/0045360 A1, Feb. 8, 2024
Int. Cl. G03G 15/20 (2006.01); B41F 23/04 (2006.01); B41F 23/08 (2006.01); G03G 15/00 (2006.01); G03G 15/08 (2006.01)
CPC G03G 15/2064 (2013.01) [B41F 23/0409 (2013.01); B41F 23/08 (2013.01); G03G 15/0863 (2013.01); G03G 15/5062 (2013.01); G03G 15/6552 (2013.01); G03G 2215/047 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An image forming system comprising:
an image forming apparatus configured to form a toner image on a first recording material on the basis of first image data for the toner image;
a fixing device configured to fix the toner image on the first recording material by applying heat and pressure to the first recording material on which the toner image is formed by the image forming apparatus;
a varnish image forming apparatus configured to form a varnish image on the first recording material, on which the toner image is fixed by the fixing device, on the basis of second image data for the varnish image;
an image reading portion configured to read the toner image and the varnish image which are formed on the first recording material; and
a controller configured to control the image forming apparatus and the varnish image forming apparatus,
wherein the controller corrects the first image data depending on first detection image data of the toner image read by the image reading portion, and then depending on the corrected first image data, a toner image is formed on a second recording material subsequent to the first recording material,
wherein the controller corrects the second image data depending on second detection image data of the varnish image read by the image reading portion, and then depending on the corrected second image data, a varnish image is formed on the second recording material,
wherein depending on the first image data and the first detection image data of the toner image read by the image reading portion, the controller acquires a first deviation amount on deviation in size occurring in the toner image formed on the first recording material and a second deviation amount on deviation in position occurring in the toner image formed on the first recording material, and corrects the first image data depending on the first deviation amount and the second deviation amount, and then depending on the corrected first image data, the toner image is formed on the second recording material, and
wherein depending on the second image data and the second detection image data of the varnish image read by the image reading portion, the controller acquires a third deviation amount on deviation in position occurring in the varnish image formed on the first recording material, and corrects the second image data depending on the third deviation amount, and then depending on the corrected second image data, the varnish image is formed on the second recording material.