IMAGE READING APPARATUS

• US 20190058806A1
• Filed: 10/23/2018
• Published: 02/21/2019
• Est. Priority Date: 12/01/2015
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: MIZUDE, Kazuhiro, OGAWA, Kazuma, FUJISAKI, Tatsuya
• Granted Patent: US 10,447,877 B2
• Time in Patent Office: Days
• CPC Class Codes: H04N 1/00708 Size or dimensions
• CPC Class Codes: H04N 1/00816 Determining the reading area, e.g. eliminating reading of margins
• CPC Class Codes: H04N 1/38 Circuits or arrangements for blanking or otherwise eliminating unwanted parts of pictures H04N1/387 takes precedence
• CPC Class Codes: H04N 1/3873 defined only by a limited number of coordinate points or parameters, e.g. corners, centre; for trimming
• CPC Class Codes: H04N 2201/0081 Image reader H04N2201/0091 - H04N2201/0094 take precedence
• CPC Class Codes: H04N 2201/0094 Multifunctional device, i.e. a device capable of all of reading, reproducing, copying, facsimile transception, file transception

Abstract

An image reading apparatus including: an original reading circuit configured to scan at least one original placed on an original table and read an image of the original; an original size detector configured to detect a size of an original to be scanned before the scan; and a control circuit configured to determine as a reading-area an area from which an image is to be read by the original reading circuit by referring to the original size detected by the original size detector, wherein the control circuit is configured to initiate a multi-crop process in which the original reading circuit scans a plurality of originals placed on the original table in batch as a batch-scan and crops an image of each of the originals, and to determine the reading-area based on a width of a maximum original in a main scanning direction and a length of a maximum original in a sub-scanning direction regardless of the detection of the original size detector when initiating the multi-crop process.

Claims

1. An image reading apparatus comprising:

an original reading circuit configured to scan at least one original placed on an original table and read an image of the original;

an original size detector configured to detect a size of an original to be scanned before the scan; and

a control circuit configured to determine as a reading-area an area from which an image is to be read by the original reading circuit by referring to the original size detected by the original size detector, wherein

the control circuit is configured to initiate a multi-crop process in which the original reading circuit scans a plurality of originals placed on the original table in batch as a batch-scan and crops an image of each of the originals, and to determine the reading-area based on a width of a maximum original in a main scanning direction and a length of a maximum original in a sub-scanning direction regardless of the detection of the original size detector when initiating the multi-crop process.

2. The image reading apparatus according to claim 1, wherein the reading-area for the batch-scan is larger than a reading-area of a maximum original detectable by the original size detector.