Sheet processing apparatus and image forming system

Patent metadata

Field	Value
Publication number	US-2016200534-A1
Application number	US-201514986094-A
Country	US
Kind code	A1
Filing date	Dec 31, 2015
Priority date	Jan 9, 2015
Publication date	Jul 14, 2016
Grant date	—

Abstract

A sheet processing apparatus includes a pair of belts, a water supplying unit, a curving unit and a controller. The pair of belts defines a conveying path for holding and conveying a paper sheet. The water supplying unit supplies water to outer surfaces of the belts. The curving unit curves the conveying path defined by the belts. The controller makes the water supplying unit supply water to the outer surfaces of the belts, and makes the belts convey the sheet between the belts in a state where the conveying path is curved by the curving unit to correct the curling of the sheet.

First claim

What is claimed is:

1 . A sheet processing apparatus, comprising:
a pair of belts defining a conveying path for holding and conveying a paper sheet; a water supplying unit which supplies water to outer surfaces of the belts; a curving unit which curves the conveying path defined by the belts; and a controller which makes the water supplying unit supply water to the outer surfaces of the belts, and makes the belts convey the sheet between the belts in a state where the conveying path is curved by the curving unit to correct the curling of the sheet.

2 . The sheet processing apparatus according to claim 1 , wherein the controller determines an amount of water to be supplied to the sheet based on sheet conditions including a sheet type and a coverage rate.

3 . The sheet processing apparatus according to claim 1 , wherein the controller determines amounts of water to be supplied respectively to the front side and back side of the sheet, and makes the water supplying unit supply the determined amounts of water to the outer surfaces of the belts which respectively correspond to the front side and back side of the sheet.

4 . The sheet processing apparatus according to claim 1 , wherein the controller determines amounts of water to be supplied respectively to the front side and back side of the sheet based on coverage rates of the front side and back side of the sheet.

5 . The sheet processing apparatus according to claim 1 , wherein the water supplying unit includes water supplying rollers which are respectively in contact with the belts, and the controller adjusts a pressing force of the water supplying rollers to be applied to the belts to adjust an amount of water to be supplied to the belts.

6 . The sheet processing apparatus according to claim 1 , further comprising a drying unit for removing the moisture of the sheet, the drying unit being disposed downstream of and in the vicinity of the belts.

7 . An image forming system, comprising:
an image forming apparatus which forms an image on a paper sheet; and the sheet processing apparatus according to claim 1 , the sheet processing apparatus conveying the sheet having the image thereon which is formed by the image forming apparatus and thereby correcting the curling of the sheet.

Assignees

• Konica Minolta Inc

Inventors

• Wang Shuanglong

Classifications

• B65H5/023

  between a pair of belts forming a transport nip · CPC title

• B65H7/20 Primary

  Controlling associated apparatus · CPC title

• B65H2406/21

  for spraying liquid · CPC title

• B65H29/12 Primary

  by means of the nip between two, or between two sets of, moving tapes or bands {or rollers} · CPC title

• G03G2221/1696

  for auxiliary devices, e.g. add-on modules · CPC title