IMAGE READING DEVICE AND IMAGE FORMING DEVICE

摘要

Once the number of successive occurrences of document feed errors during execution of fed reading has reached a predetermined number of times, an image reading control portion of the image reading device performs stationary reading in cases in which a stationary-reading document detection portion detects the presence of the document, even when a document set detection portion detects that the document is present.

主权项

1. An image reading device comprising:
a contact glass; an image reading control portion which executes fed reading for reading an image of the document passing over the contact glass while fed by a document conveying unit or stationary reading for reading an image of the document while stationary on the contact glass, the document conveying unit which conveys a document, the document conveying unit openable and closable mounted on the upper face of the contact glass, the document conveying unit including:
a document conveying path for feeding the document onto the contact glass;a document set tray which is set the document to be fed onto the document conveying path;a document set detection portion which detects the presence or absence of the document in the document set tray;a document feed portion which feeds the document from the document set tray to the document conveying path; anda document feed detection portion which detects the presence or absence of the document at a document feed detection position to the downstream side in the document feed direction from the document feed portion; a reception portion which accepts an instruction to execute the image reading job; a stationary-reading document detection portion which detects whether or not the document is present on the contact glass, wherein the image reading control portion that, when the reception portion accepts the instruction to execute the image reading job, on a condition that the document set detection portion detects the presence of the document, performs fed reading, and on a condition that the document set detection portion detects the absence of the document and the stationary-reading document detection portion detects the presence of the document, performs stationary reading, once the number of successive occurrences of a document feed error during execution of the fed reading has reached a predetermined number, the image reading control portion performs stationary reading, in the event that the stationary-reading document detection portion detects the presence of the document, even when the document set detection portion detects that the document is present.