Information reading apparatus having a contact image sensor
AssigneeMustek Systems Inc.
InventorChung-Yueh Sun
Life of this patent
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Abstract
The present invention discloses a new information reading apparatus which employs a CIS module for reading the image information from a sheet. The invention is characterized by using a single guiding device for guiding and supporting a CIS carriage in balance while contacting tightly with the bottom surface side of the sheet table. Since the space between the CIS module and the sheet table can be controlled this way, we can assure the sheet in focus. Consequently, the picture quality of the images generated by the CIS scanner can be improved.
Claims14
An image information reading apparatus having a housing comprising:
- a sheet table on top of said housing for supporting a document sheet;
- a contact image sensor module carried by a carriage disposed beneath the bottom surface side of said sheet table, said contact image sensor having a plurality of slide-blocks attached onto the top surface of said contact image sensor module;
- single guiding means crossed over the bottom center of said carriage for guiding said carriage along said sheet table, said single guiding means mounted on a pair of supports at opposite ends for holding and supporting said guiding means in a manner that said contact image sensor module can contact the bottom surface side of said sheet table tightly with said plurality of slide-blocks interposed therebetween;
- and
- driving means located at one side of said single guiding means for reciprocally moving said carriage along said sheet table from a first direction to a second direction.
The apparatus as claimed in claimed 3, wherein said elastic means comprises at least one of a spring, rubber, or spring support.
An image information reading apparatus having a housing comprising:
- a sheet table on top of said housing for supporting a document sheet;
- a contact image sensor module carried by a carriage disposed beneath the bottom surface side of said sheet table, said contact image sensor having a plurality of slide-blocks attached onto the top surface of said contact image sensor module, said carriage having a groove at its bottom side;
- a flange facing said groove of said carriage for supporting and guiding said carriage from one side, said flange disposed on a seat which is fixed at the bottom of said housing;
- guiding means located parallel to said seat for guiding said carriage along said sheet table, said guiding means mounted on a pair of supports at opposite ends for holding and supporting said guiding means in a manner that said contact image sensor module can contact the bottom surface side of said sheet table tightly with said plurality of slide-blocks interposed therebetween;
- and
- driving means located at one side of said single guiding means for reciprocally moving said carriage along said sheet table from a first direction to a second direction.
Dependencies are inferred from the claim text.