Sheet conveyance apparatus

Patent metadata

Field	Value
Publication number	US-10961069-B2
Application number	US-202016911283-A
Country	US
Kind code	B2
Filing date	Jun 24, 2020
Priority date	Jun 26, 2019
Publication date	Mar 30, 2021
Grant date	Mar 30, 2021

Abstract

When an open hole is detected at the front end of a sheet at a conveyance start position, a registration operation to correct a tilt posture of the sheet is avoided, and the present velocity is retrained to convey the sheet without temporarily stopping the sheet having the tilt posture.

First claim

What is claimed is:

1. A sheet conveyance apparatus comprising:
a sheet conveyer that conveys a sheet from a start position to an end position;
an opening detector that detects an open hole of a sheet being conveyed on the sheet conveyer;
a registration device that temporarily stops the sheet being conveyed on the sheet conveyer at a predetermined timing and corrects a tilt posture of the sheet;
an image processor that acquires image information from the sheet being conveyed on the sheet conveyer or forms an image on the sheet being conveyed on the sheet conveyer; and
a controller electrically coupled to the sheet conveyer, the opening detector, the registration device, and the image processor,
wherein
the controller conveys the sheet at a predetermined regular velocity at a timing when the image processor acquires image information from the sheet being conveyed on the sheet conveyer or forms an image on the sheet being conveyed on the sheet conveyer, and
the controller avoids an operation of the registration device and keeps a present velocity to convey the sheet on the sheet conveyer without temporarily stopping the sheet having the tilt posture at the registration device when, based on a detection result of the opening detector, the open hole is detected by the opening detector at a front end of the sheet at the start position.

2. A sheet conveyance apparatus comprising:
a sheet conveyer that conveys a sheet from a start position to an end position;
an opening detector that detects an open hole of a sheet being conveyed on the sheet conveyer;
a registration device that temporarily stops the sheet being conveyed on the sheet conveyer at a predetermined timing and corrects a tilt posture of the sheet;
an image processor that acquires image information from the sheet being conveyed on the sheet conveyer or forms an image on the sheet being conveyed on the sheet conveyer; and
a controller electrically coupled to the sheet conveyer, the opening detector, the registration device, and the image processor,
wherein
the controller conveys the sheet at a predetermined regular velocity at a timing when the image processor acquires image information from the sheet being conveyed on the sheet conveyer or forms an image on the sheet being conveyed on the sheet conveyer, and
the controller avoids an operation of the registration device and keeps a present velocity to convey the sheet on the sheet conveyer without temporarily stopping the sheet having the tilt posture at the registration device when, based on a detection result of the opening detector, the open hole is detected by the opening detector at a rear end of the sheet at the start position.

Assignees

• Sharp Kk

Inventors

• Hiro Hideyuki

Classifications

• B65H2511/16

  Irregularities, e.g. protuberances · CPC title

• B65H9/006 Primary

  the stop being formed by forwarding means in stand-by · CPC title

• B65H7/08

  responsive to incorrect front register · CPC title

• B65H2801/39

  Scanning · CPC title

• H04N1/00599

  Using specific components (details of components related to handling thin or filamentary material B65H) · CPC title