Image-reading apparatus
AssigneeCanon Kabushiki Kaisha
InventorKenji Hiromatsu
Life of this patent
Estimating the term…
Abstract
When an image-reading module moves along and scans a glass plate of an original document bed, a flexible wiring connecting the image-reading module to a fixing point takes various shapes depending on the position of the image-reading module so as to come close to or apart from a second metallic casing of an image-reading apparatus and a first metallic casing accommodating a signal processing unit. Since insulating members are provided on the first metallic casing, a predetermined or more distance between the wiring and the surface of the first metallic casing can be always kept constant, so that an analog signal transmitting through a conductive member within the wiring can be prevented from being largely affected by changes in electrostatic capacitance.
Claims9
An image-reading apparatus comprising:
- a scan-reading unit having a line sensor mounted thereon for converting light from an original document into an image signal;
- a moving unit for moving said scan-reading unit along the original document;
- an image-signal processing circuit for processing an image signal output from said scan-reading unit;
- a wiring cable for conducting the image signal output from said scan-reading unit to an input of said image-signal processing circuit;
- a first metallic casing for accommodating said image-signal processing circuit;
- a second metallic casing for accommodating said first metallic casing for accommodating said image-signal processing circuit, said scan-reading unit, and said wiring cable;
- and
- an insulating member formed on a region, to which said wiring cable might come close, of an external surface of said first metallic casing, said wiring cable contacting said insulating member when said moving unit moves said scan-reading unit.
An image-reading apparatus comprising:
- a scan-reading unit having a line sensor mounted thereon for converting light from an original document into an image signal;
- a moving unit for moving said scan-reading unit along the original document;
- an image-signal processing circuit for processing an image signal output from said scan-reading unit;
- a wiring cable for conducting the image signal output from said scan-reading unit to an input of said image-signal processing circuit;
- a metallic casing for accommodating said image-signal processing circuit;
- and
- an insulating member formed on a region, to which said wiring cable might come close, of an external surface of said metallic casing, said wiring cable contacting said insulating member when said moving unit moves said scan-reading unit.
Dependencies are inferred from the claim text.