Document reading apparatus with area recognizing sensor and obstacle detection
AssigneeMinolta Camera Kabushiki Kaisha
InventorsNoriyuki Okisu, Shinya Matsuda, Toshihiko Karasaki
Life of this patent
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Abstract
A document reading apparatus comprising a document table, a reading section disposed above the document table for reading a document placed on the document table. The reading section includes a sensor for detecting variations of brightness within a selected reading area of the document which is designated by light beams prior to a reading operation. This apparatus further comprises a display device for displaying the image of the selected reading area.
Claims19
A reading apparatus comprising:
- reading means for reading an original placed at a predetermined distance therefrom;
- detecting means for detecting whether an obstacle enters into a reading area to be read by said reading means, the detecting means being inoperative except during a period of operation of the reading means;
- and
- alarm means for providing an alarm in response to said detecting means.
A reading apparatus comprising:
- reading means for reading an original placed at a predetermined distance therefrom, the reading means including an area sensor;
- light emitting means for emitting light for designating an area on said original;
- and
- recognizing means for recognizing the area designated by the light emitted from said light emitting means.
An improved reading apparatus comprising:
- a support member for supporting an original;
- a reading means for reading an original positioned on the support member;
- means for projecting a frame area relative to the original, and
- means for enabling the reading means to read the original within the frame area.
An improved reading apparatus comprising:
- a support member for supporting an original;
- designating means for designating any area of the original positioned on the support member in accordance with a subjective input of an operator;
- reading means for reading an original positioned on the support member;
- output means for outputting image information in the area of the original designated by the designating means, wherein the image information in the area of the original is read by the reading means, and
- means for detecting an obstacle positioned between the reading means and the original, a detecting area to be detected by the detecting means being varied in response to the area designated by the designating means.
An improved reading apparatus comprising:
- a support member for supporting an original;
- reading means for reading an information content from the original positioned on the support member;
- operator means for designating any area of the original which is less than a total area of the original, including a light pen and a sensor member;
- means for storing the designated area;
- means for determining a variation in an output of the sensor member, relative to only the stored designated area, from a predetermined output of the sensor member indicative of the designated area by the operator means, and
- means for producing a signal indicative of an obstacle from the determining means that would prohibit a proper reading of the designated area.
Dependencies are inferred from the claim text.