Abstract: A method for calibrating a first image processing apparatus at a first location with a control image processing apparatus at a second location. The method comprises obtaining a plurality of individual exposure levels and plotting them against time creating a deviation history and comparing it to the operating specification for the control image processing apparatus. If the deviation history is within the operating specification, initiate a calibration, if not adjust the exposure levels and then initiate calibration. The calibration comprises preparing a calibration curve of exposure level versus density for a plurality of shipped thermal donors; computing an exposure modification curve by comparing a control thermal receiver to the shipped thermal receivers; transmitting the calibration and then the exposure modification curve to the first image processing apparatus; and adjusting the first image processing apparatus exposure levels to conform to the calibration curve and the exposure modification curve.

Abstract: A method for monitoring and adjusting the calibration for an image processing apparatus entails imaging a calibration target to create an image using the image processing apparatus and scanning the image into host software to create an exposure calibration curve. Control strips are imaged to create control strip images on order to obtain a calibrated density history for the control strips using the control strip images. The control strip images are scanned into the host software to obtain a scanned density history for each control strip and thereby form a density history for the control strips. A deviation history is calculated by comparing the scanned density history to the calibrated density history for each control strip. The deviation history is monitored to ensure that the deviation history is within the operating specifications for the image processing apparatus.

Abstract: A method for calibrating a first image processing apparatus at a first location with a control image processing apparatus at a second location. The method comprises obtaining a plurality of individual exposure levels and plotting them against time creating a deviation history and comparing it to the operating specification for the control image processing apparatus. If the deviation history is within the operating specification, initiate a calibration, if not adjust the exposure levels and then initiate calibration. The calibration comprises preparing a calibration curve of exposure level versus density for a plurality of shipped thermal donors; computing an exposure modification curve by comparing a control thermal receiver to the shipped thermal receivers; transmitting the calibration and then the exposure modification curve to the first image processing apparatus; and adjusting the first image processing apparatus exposure levels to conform to the calibration curve and the exposure modification curve.

Abstract: A method for monitoring and adjusting the calibration for an image processing apparatus entails imaging a calibration target to create an image using the image processing apparatus and scanning the image into host software to create an exposure calibration curve. Control strips are imaged to create control strip images on order to obtain a calibrated density history for the control strips using the control strip images. The control strip images are scanned into the host software to obtain a scanned density history for each control strip and thereby form a density history for the control strips. A deviation history is calculated by comparing the scanned density history to the calibrated density history for each control strip. The deviation history is monitored to ensure that the deviation history is within the operating specifications for the image processing apparatus.

Abstract: A method of calibrating a printing system is described herein.

Abstract: A method of calibrating a printing system is described herein. The method includes imaging a test pattern. The test pattern includes a set of densities. Each density is based on a plurality of exposures which have been randomized thereby forming an imaged test pattern. The method further includes scanning the densities of the imaged test pattern thereby forming a dataset. In one embodiment, the density of the test pattern is made from a thermal dye donor. In another embodiment, the density of the test pattern comprises multiple colors. Then, the method includes analyzing the dataset to identify outlier data. The method then includes calibrating an adjustable density printing system using the polynomial calibration curve.

Abstract: A method of calibrating a printing system is described herein. The method includes imaging a test pattern. The test pattern includes a set of densities. Each density is based on a plurality of exposures which have been randomized thereby forming an imaged test pattern. The method further includes scanning the densities of the imaged test pattern thereby forming a dataset. In one embodiment, the density of the test pattern is made from a thermal dye donor. In another embodiment, the density of the test pattern comprises multiple colors. Then, the method includes analyzing the dataset to identify outlier data. The method then includes calibrating an adjustable density printing system using the polynomial calibration curve.

Abstract: A method for setting focus of a multichannel printhead for an imaging apparatus (10) comprises moving the printhead (500) to a premove position. A first set of patches (82) is printed wherein a focus position of the printhead is varied in a first random pattern from one patch to another. A second set of patches (83) is printed wherein the focus position of the printhead is varied in a second random pattern from one patch to another. A density for each of the patches is measured in the first series of patches. A density for each of the patches is measured in the second series of patches. An optimum focus position is calculated for the multichannel printhead based on a polynomial curve (72) of density and focus position for each of the patches.

Abstract: A method for setting focus of a multichannel printhead for an imaging apparatus (10) comprises moving the printhead (500) to a premove position. A first set of patches (82) is printed wherein a focus position of the printhead is varied in a first random pattern from one patch to another. A second set of patches (83) is printed wherein the focus position of the printhead is varied in a second random pattern from one patch to another. A density for each of the patches is measured in the first series of patches. A density for each of the patches is measured in the second series of patches. An optimum focus position is calculated for the multichannel printhead based on a polynomial curve (72) of density and focus position for each of the patches.