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US 8,106,934 B2Granted
Image processing method, and image processor
AssigneeRicoh Company, Ltd.
InventorsTomomi Ishimi, Yoshihiko Hotta, Shinya Kawahara
Life of this patent
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Abstract
The present invention provides an image processing method which includes at least any one of an image recording step and an image erasing step, wherein a light irradiation intensity I1 at a center position of the laser beam irradiated in the image recording step and a light irradiation intensity I2 on an 80% light energy bordering surface to the total light energy of the irradiated laser beam satisfy the expression, 0.40≦I1/I2≦2.00, and in the image recording step, at an overlap portion where a first image line among a plurality of image lines constituting an image is overlapped with a second image line, any one of the first image line and the second image line is not to be recorded.
Claims20
An image processing method, comprising:
- at least one of (a) recording an image on a thermally reversible recording medium that can reversibly change any one of its transparency and color tone depending on temperature by irradiating and heating the thermally reversible recording medium with a laser beam, and (b) erasing the image recorded on the thermally reversible recording medium by heating the thermally reversible recording medium;
- detecting at least one of a peripheral temperature and a recording medium temperature of the thermally reversible recording medium;
- and
- controlling irradiation conditions of the laser beam to be irradiated to the thermally reversible recording medium based on said at least one of the recording medium temperature of the thermally reversible recording medium and the peripheral temperature,
- wherein the laser beam irradiated on the thermally reversible recording medium is circular-shaped,
- wherein a light irradiation intensity I1 at a center position of the circular-shaped laser beam irradiated in the image recording and a light irradiation intensity I2 on an 80% light energy bordering surface to the total light energy of the irradiated circular-shaped laser beam satisfy the expression, 0.40≦I1/I2≦2.00,
- wherein in the image recording, at least a portion of a first image line and at least a portion of a second image line are to be recorded, said first and second image lines are amongst a plurality of image lines constituting an image, the first image line intersects the second image line at an overlapped portion thereof, and any one of the first image line and the second image line is not to be recorded at said overlapped portion, and
- wherein when a distance between an edge of the image line at the overlap portion where the image line is not recorded and another image line recorded at the overlap portion is represented by “L”, and a width of the image line recorded at the overlap portion is represented by “R”, the expression, (−⅓)R<L<R, is satisfied, wherein in the case that said image line overlaps said another image line, “L” is less than zero.
5 more elements
An image processing method comprising:
- at least one of (a) recording an image on a thermally reversible recording medium that can reversibly change any one of its transparency and color tone depending on temperature by irradiating and heating the thermally reversible recording medium with a laser beam, and (b) erasing the image recorded on the thermally reversible recording medium by heating the thermally reversible recording medium,
- wherein a light irradiation intensity I1 at a center position of the laser beam irradiated in the image recording and a light irradiation intensity I2 on an 80% light energy bordering surface to the total light energy of the irradiated laser beam satisfy the expression, 0.40≦I1/I2≦2.00, and
- wherein in the image recording, at least a portion of a first image line and at least a portion of a second image line are to be recorded, said first and second image lines are amongst a plurality of image lines constituting an image, the first image line intersects the second image line at an overlapped portion thereof, and any one of the first image line and the second image line is not to be recorded at said overlapped portion;
- detecting at least one of a peripheral temperature and a recording medium temperature of the thermally reversible recording medium;
- and
- controlling, based on said at least one of the recording medium temperature of the thermally reversible recording medium and the peripheral temperature, at least one of:
- a number of pulses of the laser beam to be irradiated to the thermally reversible recording medium;
- a scanning speed of the laser beam;
- a spot diameter of the laser beam.
6 more elements
Dependencies are inferred from the claim text.