Document feeder, image-scanning apparatus, and image-forming apparatus
View Patent ↗A document feeder includes: a conveyance unit that separates one document from among documents placed on a document tray, and conveys the document; a first width-determining unit that determines a width of one of the documents; a second width-determining unit that determines a width of the conveyed document; a first length-determining unit that determines a length of one of the documents; a second length-determining unit that determines a length of the conveyed document; and a controller that if an inconsistency occurs between the width determined by the first width-determining unit and the width determined by the second width-determining unit, causes a display unit to display an operation guide including first content, and if an inconsistency occurs between the length determined by the first length-determining unit and the length determined by the second length-determining unit, causes the display unit to display an operation guide including second content.
1. A document feeder comprising:
a document tray on which documents are placed;
a conveyance unit that separates one document from among the documents placed on the document tray, and conveys the document;
a first document-width-determining unit that determines a document width of one of the documents placed on the document tray;
a second document-width-determining unit that determines a document width of the document conveyed by the conveyance unit;
a first document-length-determining unit that determines a document length of one of the documents placed on the document tray;
a second document-length-determining unit that determines a document length of the document conveyed by the conveyance unit;
a display unit that displays an operation guide to a user;
a controller that if an inconsistency occurs between the document width determined by the first document-width-determining unit and the document width determined by the second document-width-determining unit, causes the display unit to display an operation guide including first content, and if an inconsistency occurs between the document length determined by the first document-length-determining unit and the document length determined by the second document-length-determining unit, causes the display unit to display an operation guide including second content that is different from the first content, and
a positioning member that controls a position in a document width direction of the documents placed on the document tray, wherein the controller, if an inconsistency occurs between the document width determined by the first document-width-determining unit and the document width determined by the second document-width-determining unit, causes the display unit to display an operation guide that instructs a user to adjust a position of the positioning member to the document width of the document that has been determined by the first document-width-determining unit;
wherein the controller, if an inconsistency occurs between the document length determined by the first document-length-determining unit and the document length determined by the second document-length-determining unit, causes the display unit to display an operation guide that instructs a user to remove an object other than documents, placed on the document tray.
2. An image-scanning apparatus comprising:
a document feeder that has:
a document tray on which documents are placed;
a conveyance unit that separates one document from among the documents placed on the document tray, and conveys the document;
a first document-width-determining unit that determines a document width of one of the documents placed on the document tray;
a second document-width-determining unit that determines a document width of the document conveyed by the conveyance unit;
a first document-length-determining unit that determines a document length one of the documents placed on the document tray;
a second document-length-determining unit that determines a document length of the document conveyed by the conveyance unit;
a display unit that displays an operation guide to a user;
a controller that if an inconsistency occurs between the document width determined by the first document-width-determining unit and the document width determined by the second document-width-determining unit, causes the display unit to display an operation guide including first content, and if an inconsistency occurs between the document length determined by the first document-length-determining unit and the document length determined by the second document-length-determining unit, causes the display unit to display an operation guide including second content that is different from the first content;
a scanning unit that scans the document conveyed by the conveyance unit; and
a positioning member that controls a position in a document width direction of the documents placed on the document tray, wherein the controller, if an inconsistency occurs between the document width determined by the first document-width-determining unit and the document width determined by the second document-width-determining unit, causes the display unit to display an operation guide that instructs a user to adjust a position of the positioning member to the document width of the document that has been determined by the first document-width-determining unit;
wherein the controller, if an inconsistency occurs between the document length determined by the first document-length-determining unit and the document length determined by the second document-length-determining unit, causes the display unit to display an operation guide that instructs a user to remove an object other than documents, placed on the document tray.
3. An image-forming apparatus comprising:
an image-scanning device that has:
a document feeder that includes:
a document tray on which documents are placed;
a conveyance unit that separates one document from among the documents placed on the document tray, and conveys the document;
a first document-width-determining unit that determines a document width of one of the documents placed on the document tray;
a second document-width-determining unit that determines a document width of the document conveyed by the conveyance unit;
a first document-length-determining unit that determines a document length one of the documents placed on the document tray;
a second document-length-determining unit that determines a document length of the document conveyed by the conveyance unit;
a display unit that displays an operation guide to a user;
a controller that if an inconsistency occurs between the document width determined by the first document-width-determining unit and the document width determined by the second document-width-determining unit, causes the display unit to display an operation guide including first content, and if an inconsistency occurs between the document length determined by the first document-length-determining unit and the document length determined by the second document-length-determining unit, causes the display unit to display an operation guide including second content that is different from the first content;
a scanning unit that scans the document conveyed by the conveyance unit;
an image-forming device that forms an image on a recording medium on the basis of an image scanned by the scanning unit; and
a positioning member that controls a position in a document width direction of the documents placed on the document tray, wherein the controller, if an inconsistency occurs between the document width determined by the first document-width-determining unit and the document width determined by the second document-width-determining unit, causes the display unit to display an operation guide that instructs a user to adjust a position of the positioning member to the document width of the document that has been determined by the first document-width-determining unit;
wherein the controller, if an inconsistency occurs between the document length determined by the first document-length-determining unit and the document length determined by the second document-length-determining unit, causes the display unit to display an operation guide that instructs a user to remove an object other than documents, placed on the document tray.