Abstract: The disposable paper cup has a body formed of a cylindrical wall with a recess at the top. The portions of the body wall adjacent either side of the recess are aligned into a flap. The flap is folded over and secured to the exterior surface of the body wall to entirely enclose the cup body, except for an integral spout formed by the recess.

Abstract: An apparatus to calibrate a printer. The apparatus comprises a controller to: control deposition of white printing material on media, the white printing material having an opacity of at least 55%; control deposition of non-white printing material on the white printing material; receive data for at least one sensed characteristic of the non-white printing material; and calibrate the printer using the received data for the at least one sensed characteristic of the non-white printing material.

Abstract: An apparatus to calibrate a printer. The apparatus comprises a controller to: control deposition of white printing material on media, the white printing material having an opacity of at least 55%; control deposition of non-white printing material on the white printing material; receive data for at least one sensed characteristic of the non-white printing material; and calibrate the printer using the received data for the at least one sensed characteristic of the non-white printing material.

Abstract: An apparatus to calibrate a printer. The apparatus comprises a controller to: control deposition of white printing material on media, the white printing material having an opacity of at least 55%; control deposition of non-white printing material on the white printing material; receive data for at least one sensed characteristic of the non-white printing material; and calibrate the printer using the received data for the at least one sensed characteristic of the non-white printing material.

Abstract: Printing by determining target color values based on first color outputs, determining current color values based on current color outputs, and calculating color compensation values to compensate for a difference between the target color values and the current color values.

Abstract: An apparatus to calibrate a printer. The apparatus comprises a controller to: control deposition of white printing material on media, the white printing material having an opacity of at least 55%; control deposition of non-white printing material on the white printing material; receive data for at least one sensed characteristic of the non-white printing material; and calibrate the printer using the received data for the at least one sensed characteristic of the non-white printing material.

Abstract: Printing by determining target color values based on first color outputs, determining current color values based on current color outputs, and calculating color compensation values to compensate a difference between the target color values and the current color values.

Abstract: An embodiment of this disclosure involves printing color outputs on sheets, reading the color outputs and adjusting a calibration parameter.

Abstract: A method for identifying a pair of genuine red eye artifacts in a captured image includes the steps of determining the presence of a face in the captured image, substantially encompassing the face within a shape, and determining the presence of three or more candidate red eye artifacts within the shape. The method continues with measuring the distance from an edge of the shape to each of the three or more candidate red eye artifacts and identifying, as genuine red eye artifacts, two candidate red eye artifacts of the three or more candidate red eye artifacts that are within a predetermined vertical distance from the edge of the shape.

Abstract: A method of calibrating an optical density sensor comprising calculating a first pigment solid density value of an ink solution using a current first electrical output signal value from a photodetector, a current second electrical output signal value from a photodetector, and a current lens gap value, calculating a second pigment solid density value of the ink solution using a previously measured first electrical output signal value, a previously measured second electrical output signal value, and a previously measured lens gap value, comparing the current first electrical output signal value, the current second electrical output signal value, and the current lens gap value with the previously measured first electrical output signal value, the previously measure second electrical output signal value, and the previously measured lens gap value, and comparing the first pigment solid density value with the second pigment solid density value.

Abstract: A method of accurately printing a target color is provided. The method comprises: in a first step measuring the light spectrum (106) of a first printed color sample (104), which has been printed with a first ink coverage; and from the measured light spectrum calculating a color discrepancy between the first printed color sample and the target color. The method further comprises in a second step calculating an improved ink coverage (112), and printing a second color sample with the improved ink coverage (104). The aforementioned steps are repeated until a predetermined condition for accuracy of the target color has been reached (110).

Abstract: Image forming devices, hard imaging methods, and methods of determining a transfer function are described.

Abstract: Imaging methods, imaging device calibration methods, imaging devices, and hard imaging device sensor assemblies are described. According to one aspect, an imaging method includes forming a hard color image upon media using image data, the hard color image corresponding to the color image, and after the forming, sensing an optical characteristic of the hard color images at a plurality of different spatial locations of individual ones of the hard color images, and providing information regarding the optical characteristic at the different spatial locations of the hard color image after the sensing.

Abstract: Printing by determining target color values based on first color outputs, determining current color values based on current color outputs, and calculating color compensation values to compensate for a difference between the target color values and the current color values.

Abstract: An embodiment of this disclosure involves printing color outputs on sheets, reading the color outputs and adjusting a calibration parameter.

Abstract: A method of calibrating an electrophotographic printer (30), the printer configured with a plurality of light settings, each light setting arranged to produce a different element type, the method comprising: determining (S10) a first light level required to print a first element type by applying a proportional change to a first initial light setting; and determining (S30) a second light level required to print a second element type by applying substantially the same proportional change to a second initial light setting.

Abstract: A method of enabling preparing a printing system calibrated with a first halftone screen for printing with a second halftone screen. The calibration is represented by calibration data. Calibration data for the second halftone screen is produced from the existing calibration data of the first halftone screen without resorting to previous calibration data for the second halftone screen, based on correlation data which represent a first-order correlation between the halftone screens.

Abstract: A method of calibrating an optical density sensor comprising calculating a first pigment solid density value of an ink solution using a current first electrical output signal value from a photodetector, a current second electrical output signal value from a photodetector, and a current lens gap value, calculating a second pigment solid density value of the ink solution using a previously measured first electrical output signal value, a previously measured second electrical output signal value, and a previously measured lens gap value, comparing the current first electrical output signal value, the current second electrical output signal value, and the current lens gap value with the previously measured first electrical output signal value, the previously measure second electrical output signal value, and the previously measured lens gap value, and comparing the first pigment solid density value with the second pigment solid density value.

Abstract: A correction method for correcting unintended spatial variation in lightness across a physical image produced by a xerographic process, the method comprising producing a test image using the xerographic process, measuring a difference between actual lightness and intended lightness across at least part of the test image, and varying the light source level used subsequently in the xerographic process to correct for the measured unintended difference.

Abstract: A method for identifying a pair of genuine red eye artifacts in a captured image includes the steps of determining the presence of a face in the captured image, substantially encompassing the face within a shape, and determining the presence of three or more candidate red eye artifacts within the shape. The method continues with measuring the distance from an edge of the shape to each of the three or more candidate red eye artifacts and identifying, as genuine red eye artifacts, two candidate red eye artifacts of the three or more candidate red eye artifacts that are within a predetermined vertical distance from the edge of the shape.