US 12,351,414 B2
Sheet post-processing apparatus and image forming system including the apparatus
Yasunori Ueno, Osaka (JP); Keisuke Egawa, Osaka (JP); Yusuke Takano, Osaka (JP); Takehiko Okada, Osaka (JP); Takuya Nishimura, Osaka (JP); Terumitsu Noso, Osaka (JP); Seiichi Shirasaki, Osaka (JP); and Chisaki Teraoka, Osaka (JP)
Assigned to KYOCERA Document Solutions Inc., Osaka (JP)
Filed by KYOCERA Document Solutions Inc., Osaka (JP)
Filed on Jan. 16, 2024, as Appl. No. 18/413,676.
Claims priority of application No. 2023-008755 (JP), filed on Jan. 24, 2023; and application No. 2023-203117 (JP), filed on Nov. 30, 2023.
Prior Publication US 2024/0253937 A1, Aug. 1, 2024
Int. Cl. B65H 31/38 (2006.01); B65H 31/02 (2006.01); B65H 31/34 (2006.01); B65H 31/36 (2006.01); B65H 31/40 (2006.01); B65H 39/10 (2006.01)
CPC B65H 31/38 (2013.01) [B65H 31/02 (2013.01); B65H 31/34 (2013.01); B65H 31/36 (2013.01); B65H 31/40 (2013.01); B65H 39/10 (2013.01); B65H 2511/12 (2013.01); B65H 2801/27 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A sheet post-processing apparatus, comprising:
a conveying member which is configured to convey a sheet, the sheet including a plurality of sheets;
a processing tray on which the plurality of sheets that are carried in along a predetermined carry-in direction by the conveying member are stacked;
a processing unit which is configured to execute a predetermined post process onto the plurality of sheets that are stacked on the processing tray;
a reference plate which is provided on a downstream side in an alignment direction that is opposite to the predetermined carry-in direction of the plurality of sheets that are carried in onto the processing tray;
an alignment member
which is provided above the processing tray to face the processing tray, and
which is configured to align the plurality of sheets in the predetermined carry-in direction by moving the plurality of sheets in the alignment direction to cause edges of the plurality of sheets to abut against the reference plate, the plurality of sheets having been carried in on the processing tray, the edges being on the downstream side in the alignment direction;
a pair of width regulating members
which are configured to reciprocate in a width direction that is orthogonal to the predetermined carry-in direction, and
which are configured to align the plurality of sheets that are carried in onto the processing tray in the width direction;
a drive unit which is configured to reciprocate the pair of width regulating members; and
a control portion which is configured to control the drive unit,
the control portion repetitively performing a width-direction alignment operation every time each of the plurality of sheets is carried in onto the processing tray, the width-direction alignment operation including
a first alignment operation of moving the pair of width regulating members from standby positions to first regulating positions before each of the plurality of sheets that are carried in onto the processing tray is aligned in the predetermined carry-in direction by the abutting of the edge of each of the plurality of sheets against the reference plate, and
a second alignment operation of
moving the pair of width regulating members from the first regulating positions to the standby positions after performing the first alignment operation, and
then moving the pair of width regulating members to second regulating positions after each of the plurality of sheets has been aligned in the predetermined carry-in direction by the abutting of the edge of each of the plurality of sheets against the reference plate,
the sheet post-processing apparatus satisfying the following formula (1)

OG Complex Work Unit Chemistry
 where
P1 is a size in the width direction of each of the plurality of sheets,
C1 is an interval between the pair of width regulating members at the standby positions,
C2 is an interval between the pair of width regulating members at the first regulating positions, and
C3 is an interval between the pair of width regulating members at the second regulating positions.