Image reading apparatus and image forming system to properly read at least a document in a preceding document bundle

Patent metadata

Field	Value
Publication number	US-10917534-B2
Application number	US-201916598171-A
Country	US
Kind code	B2
Filing date	Oct 10, 2019
Priority date	Apr 15, 2019
Publication date	Feb 9, 2021
Grant date	Feb 9, 2021

Abstract

An image reading apparatus includes a transport unit, a reader, a detector, and a controller. The transport unit transports a document. The reader reads the transported document. The detector detects whether or not a document bundle prior to being transported is present. While a document in a first document bundle corresponding to a first job is being transported, if the detector detects that a document in a second document bundle corresponding to a second job as a subsequent job is loaded, the controller actuates the transport unit until all documents in the first document bundle are output.

First claim

What is claimed is:

1. An image reading apparatus comprising:
a document feeder that transports a document;
a reader that reads the transported document;
a detector that detects whether or not a document bundle prior to being transported is present; and
a controller wherein, while a document in a first document bundle corresponding to a first job is being transported, if the detector detects that a document in a second document bundle corresponding to a second job as a subsequent job is loaded, the controller actuates the document feeder until all documents in the first document bundle are output, wherein
the controller switches between a mode where pre-feeding is performed for preliminarily pulling in the document and a mode where the pre-feeding is not performed, and
the controller performs the pre-feeding when the document in the second document bundle is not pulled into the image reading apparatus, and does not perform the pre-feeding when the document in the second document bundle is pulled into the image reading apparatus.

2. The image reading apparatus according to claim 1 ,
wherein the controller changes operation of the document feeder performed on the second job in accordance with a position of the document pulled into the image reading apparatus from the second document bundle when all the documents in the first document bundle are output.

3. The image reading apparatus according to claim 2 ,
wherein when the document pulled into the image reading apparatus is located where the document is able to reach a predetermined speed before being transported to the reader, the controller continues with the second job.

4. The image reading apparatus according to claim 3 ,
wherein the controller actuates the document feeder to transport the document without performing pre-feeding that involves preliminarily pulling the document into the image reading apparatus.

5. The image reading apparatus according to claim 3 , further comprising:
a sensor that detects a document transported to a position of the reader,
wherein when the document is pulled in to a detecting position of the sensor, the controller discontinues the second job.

6. The image reading apparatus according to claim 5 ,
wherein the controller issues a warning indicating that a document jam has occurred when the first job ends.

7. The image reading apparatus according to claim 2 ,
wherein when the document is located where the document is not able to reach a predetermined speed before being transported to the reader, the controller discontinues the second job.

8. The image reading apparatus according to claim 7 ,
wherein the controller issues a warning indicating that a document jam has occurred when the second job commences.

9. An image forming system comprising:
an image reading apparatus that reads an image of a document; and
an image forming unit that forms the image read by the image reading apparatus onto a recording medium,
wherein the image reading apparatus includes
a document feeder that transports the document,
a reader that reads the transported document,
a detector that detects whether or not a document bundle prior to being transported is present, and
a controller wherein, while a document in a first document bundle corresponding to a first job is being transported, if the detector detects that a document in a second document bundle corresponding to a second job as a subsequent job is loaded, the controller actuates the document feeder until all documents in the first document bundle are output, wherein
the controller switches between a mode where pre-feeding is performed for preliminarily pulling in the document and a mode where the pre-feeding is not performed, and
the controller performs the pre-feeding when the document in the second document bundle is not pulled into the image reading apparatus, and does not perform the pre-feeding when the document in the second document bundle is pulled into the image reading apparatus.

10. An image reading apparatus comprising:
transport means for transporting a document;
reading means for reading the transported document;
detecting means for detecting whether or not a document bundle prior to being transported is present; and
control means wherein, while a document in a first document bundle corresponding to a first job is being transported, if the detecting means detects that a document in a second document bundle corresponding to a second job as a subsequent job is loaded, the control means actuates the transport means until all documents in the first document bundle are output, wherein
the control means switches between a mode where pre-feeding is performed for preliminarily pulling in the document and a mode where the pre-feeding is not performed, and
the control means performs the pre-feeding when the document in the second document bundle is not pulled into the image reading apparatus, and does not perform the pre-feeding when the document in the second document bundle is pulled into the image reading apparatus.

Assignees

• Fuji Xerox Co Ltd

Inventors

• Sato Kazunobu
• KIMURA Hosana
• Sawamura Hiromichi
• Furusawa Kaoru
• Itoh Atsuhiro
• Fukuda Akari
• Aizumi Minoru
• Tanaka Yuichi
• Kondo Taketo

Classifications

• H04N1/00602 Primary

  Feed rollers · CPC title

• H04N1/1215

  Feeding using one or more cylindrical platens or rollers in the immediate vicinity of the main scanning line · CPC title

• H04N1/00641

  Sorting, reordering or inverting (postal sorting or sorting individual articles B07C) · CPC title

• H04N1/123

  Using a dedicated sheet guide element · CPC title

• H04N1/00771

  Indicating or reporting, e.g. issuing an alarm · CPC title