Flat bed image scanner
AssigneeAvision Inc.
InventorThomas Sheng
Life of this patent
Estimating the term…
Abstract
A flat bed image scanner uses a contact image sensor to scan a document. The distance between the contact image sensor and the glass window, over which the document is placed, is minimized and held constant by inserting a lubricating element between the contact image sensor and the glass window. The lubricating element may comprise two pads placed at the two ends of the contact image sensor. The lubricating element can also be integrated structurally with the contact image sensor. The material of the lubricating element can be nylon or some other kinds of plastic. The lubricating element may also comprise two rollers placed at the two ends of the contact image sensor.
Claims8
A flat bed image scanner for scanning a document to obtain data for digital processing comprising:
- a glass window for placing said document;
- a contact image sensor for scanning said document:
- two durable lubricating plastic pads placed at two ends of said contact image sensor between said contact image sensor and said glass window to reduce friction when said contact image sensor slides along said glass window;
- a nest for recessing said contact image sensor;
- and
- an elastic element placed in said nest so the contact image sensor can scan said document.
Dependencies are inferred from the claim text.