JP2017013981A5 - - Google Patents

Description

The document conveying device of the present invention includes a document stacking unit, a document loading unit that loads the documents stacked on the document loading unit one by one, and a conveyance unit that conveys the document loaded by the document loading unit into the apparatus. A double feed detection sensor for detecting whether or not a document is in a double feed state between the document take-in unit and the transport unit, and a document for determining the thickness of the document taken in by the document take-in unit Determining means and control means for controlling the double feed detection sensor, wherein the control means determines whether or not to make a double feed determination by the double feed detection sensor based on a determination result of the document discrimination means. and wherein a call to determine.

Claims (8)

A document stacking unit;
A document capture unit that captures documents stacked on the document stacking unit one by one;
A transport unit that transports a document captured by the document capture unit into the apparatus;
Between the conveyance section and the original capturing unit, and a double-feed detection sensor that detects whether the original is two or more double feed state,
A document discriminating means for discriminating the thickness of a document captured by the document capture unit ;
Control means for controlling the double feed detection sensor,
Said control means based on the discrimination result of the document discrimination means, the document conveying apparatus characterized that you determine whether to multifeed detection by the double feed detection sensor. Examples originals discriminating means, taking one by one the loaded original to said original stacking portion, comprising: a vertically movable pick-up roller, and a lift sensor detects a lift of the pickup roller,
The document conveying apparatus according to claim 1, wherein the control unit determines whether or not to perform a double feed determination by the double feed detection sensor based on a detection result of the lifting detection sensor.   3. The document conveying apparatus according to claim 1, wherein the document determining unit determines that a thick document has been captured when the card is captured by the document capturing unit. Examples originals determining means, an operation unit user which includes a switch unit operable,
When the document conveying, while the user presses the switch unit, the said control means temporarily, according to claim 1, characterized in that it is determined that the it is not thick document a document to be captured by the document capture unit Document transport device. Said control means, said original determination means, when it is determined that the document to be captured is a thick document, any one of claims 1 to 4, characterized in that the disabling detection result before Symbol double-feed detection sensor The document conveying apparatus according to Item 1. Said control means, said original determination means, when it is determined that the document to be captured is a thick document, any one of claims 1 to 4, characterized in that the disabling double feed detection by the double feed detection sensor The document conveying apparatus according to Item 1. It said control means, by said original determination means, when it is determined that the document has a thickness conveying the document, according to any one of claims 1 to 6, characterized in that to increase the conveying force of the conveying unit Document transport device. Image reading apparatus characterized by reading an image of a document conveyed by the document conveying device according to any one of claims 1 to 7.