Image-checking equipment for check image and image-forming apparatus that using the same
AssigneeKonica Minolta, Inc.
InventorsTakashi HARASHIMA, Takaaki KOORIYA, Katsuyuki HIRATA
Life of this patent
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Abstract
In image-checking equipment, a detector reads a line-shaped check image formed on a sheet and acquires image data on the check image. A controller calculates an edge blur in a rising edge and a falling edge of the image data, calculates a line width of the check image. The controller refers to a correction table with the measured values of the edge blur and the line width of the check image, and acquires a corrected line width value based on the correction table to obtain the real line width of the check image.
Claims23
Image-checking equipment comprising:
- a detector that optically reads a line-shaped check image formed on medium and acquires image data on the check image;
- and
- a controller that calculates an edge blur in a rising edge and a falling edge of the image data acquired by the detector, calculates a line width of the check image and obtains a real line width of the check image according to measured values of the edge blur and the line width of the check image.
An image-forming apparatus comprising:
- an image-forming portion that forms an image on medium and forms a line-shaped check image on the medium;
- a detector that optically reads the check image formed on the medium and acquires image data on the check image;
- and
- a controller that calculates an edge blur in a rising edge and a falling edge of the image data acquired by the detector on the line-shaped check image formed on the medium by the image-forming portion, calculates a line width of the check image and obtains a real line width of the check image according to measured values of the edge blur and the line width of the check image.
Image-checking equipment comprising:
- a detector that optically reads a line-shaped check image formed on medium and acquires image data on the check image;
- and
- a controller that calculates an edge blur in a rising edge and a falling edge of the image data acquired by the detector, calculates a line width of the check image and obtains a real line width of the check image according to the image data in which a value of the edge blur is smallest, the image data in which the line width is widest or the image data in which a value of the edge blur is smallest and the line width is widest.
An image-forming apparatus comprising:
- an image-forming portion that forms an image on medium and forms a line-shaped check image on the medium;
- a detector that optically reads the line-shaped check image formed on the medium by the image-forming portion and acquires image data on the line-shaped check image;
- and
- a controller that calculates edge blur in a rising edge and a falling edge of the image data acquired by the detector, calculates a line width of the check image and obtains a real line width of the check image according to the image data in which a value of edge blur is smallest, the image data in which line width is widest or the image data in which a value of the edge blur is smallest and the line width is widest.
Dependencies are inferred from the claim text.