US 12,240,731 B2
Sheet separation device, laminator, image forming apparatus, and image forming system
Koju Kawakami, Tokyo (JP); Akira Kunieda, Tokyo (JP); Yohsuke Haraguchi, Kanagawa (JP); Hirofumi Horita, Kanagawa (JP); Satoshi Kuno, Tokyo (JP); Yasunobu Kidoura, Kanagawa (JP); and Ryohsuke Akaishi, Kanagawa (JP)
Assigned to Ricoh Company, Ltd., Tokyo (JP)
Filed by Koju Kawakami, Tokyo (JP); Akira Kunieda, Tokyo (JP); Yohsuke Haraguchi, Kanagawa (JP); Hirofumi Horita, Kanagawa (JP); Satoshi Kuno, Tokyo (JP); Yasunobu Kidoura, Kanagawa (JP); and Ryohsuke Akaishi, Kanagawa (JP)
Filed on Feb. 16, 2023, as Appl. No. 18/170,350.
Claims priority of application No. 2022-025932 (JP), filed on Feb. 22, 2022; and application No. 2022-198812 (JP), filed on Dec. 13, 2022.
Prior Publication US 2023/0264909 A1, Aug. 24, 2023
Int. Cl. B32B 37/00 (2006.01); B32B 37/18 (2006.01); B32B 38/00 (2006.01); B32B 38/18 (2006.01); B65H 9/00 (2006.01); B32B 27/10 (2006.01); B32B 27/36 (2006.01)
CPC B65H 9/004 (2013.01) [B32B 37/0053 (2013.01); B32B 37/185 (2013.01); B32B 38/145 (2013.01); B32B 38/1808 (2013.01); B32B 27/10 (2013.01); B32B 27/36 (2013.01); B32B 2317/12 (2013.01); B32B 2367/00 (2013.01); B65H 2404/14 (2013.01); B65H 2801/06 (2013.01); B65H 2801/27 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A sheet separation device configured to convey a two-ply sheet, in which two sheets are overlaid with each other and joined at one side of four sides of the two-ply sheet, in a state where the one side joined is located on an upstream side or a downstream side of the two-ply sheet in a sheet conveyance direction, separate the two-ply sheet into the two sheets at an end opposite the one side joined, and insert an inner sheet from a non-joined side opposite the joined side in the sheet conveyance direction so that the inner sheet is sandwiched between the two sheets overlaid with each other, the sheet separation device comprising:
a conveying roller pair including a pair of rollers, the conveying roller pair configured to:
convey the two-ply sheet; and
hold a joined portion of in the two-ply sheet at which the two sheets are joined, at a nip portion of the conveying roller pair when the inner sheet is inserted into the two-ply sheet; and
circuitry configured to contact the inner sheet against the joined portion of the two-ply sheet to perform skew correction.