Abstract: In accordance with an embodiment, an image forming apparatus comprises a deflector, a photoconductor, a mirror, a displacement mechanism and a control section. The deflector deflects laser light emitted from a light source to an optical path of each color in a horizontal scanning direction. The photoconductor is located in each optical path and forms an image of each color through development of an electrostatic latent image formed by being exposed by the laser light. The mirror is located in each optical path and reflects the laser light to each corresponding photoconductor. The displacement mechanism is arranged on each mirror and displaces the mirror in order to correct an inclination shift between images of respective colors. The control section corrects a magnification of the image of each color in the horizontal scanning direction according to an inclination correction amount of the image of each color.

Abstract: A system and method for color management of a color printer for correcting color drift using a single unified calibration tone reproduction curve (TRC). The unified calibration TRC may be applied to destination profiles for all halftones during printing. When printer drift occurs, only the unified calibration TRC is recalibrated to create a new unified calibration TRC which is subsequently applied to the destination profiles for all color halftones during printing to correct the color output of the color printer.

Abstract: An image forming apparatus having a hardware configuration for counting the amount of toner used for an image to be printed for each color component uses a conversion coefficient used for processing for converting a pixel value in image data expressing the image into a signal value indicating the amount of toner to convert the pixel value into the signal value. The image forming apparatus outputs information indicating whether or not a high-density image portion is included in an image based on the signal value obtained by performing the conversion.

Abstract: A sequence program creation device includes a search-key-circuit specification unit specifying a search key circuit; a search-area specification unit specifying a search area for searching for a circuit similar to the search key circuit; a search-index specification unit specifying an index in a process of calculating a similarity to the search key circuit; a similarity calculation unit calculating a similarity to the search key circuit, based on the index, for each circuit included in the search area; a search-target-part determination unit determining whether the similarity is equal to or more than a predetermined threshold for each circuit for which the similarity calculation unit has calculated the similarity; and a search-result display-screen display unit displaying on a search-result display screen a circuit whose similarity is determined to be equal to or more than the predetermined threshold by the search-target-part determination unit.

Abstract: A print job is analyzed to determine what page locations can use optional colors and different image quality increase values of different optional colors at the page locations are calculated. Only one of the optional colors is selected, based on which optional color produces the highest print job image quality increase for all of the page locations of the print job. Each individual page of the print job is evaluated to determine if use of the selected optional color increases image quality of the individual page to identify page exceptions. Instructions to mount a selected replaceable printing module corresponding to the selected optional color are displayed, and the print job is printed using the selected replaceable printing module.

Abstract: An image forming apparatus 1 includes: a conveyance unit 40 that conveys a medium; a reading unit 50 that reads an image formed on the medium conveyed by the conveyance unit; a storage unit that stores data for specifying a color indicated by a reading result obtained from the reading unit 50; and a correction unit that corrects the data to match a color of the image and the color indicated by the reading result. The conveyance unit 40 conveys a color sample medium. Sa as a medium containing an image of a color region of a predetermined color, the reading unit 50 reads the image of the color region, and the correction unit corrects the data associated with the predetermined color in accordance with a reading result of the image of the color region obtained from the reading unit 50.

Abstract: An image processing apparatus accurately compensates a flare component. An image forming apparatus reads images in a first reading condition and a second reading condition in which flare less occurs, and includes: a reflectance assignment unit for assigning a reflectance to the first image in accordance with the distance between the first image and the second image; a color information arithmetic unit for obtaining color information about the first image read in the second reading condition; a flare component derivation unit for deriving a flare component of the second image based on the reflectance and the color information; and a flare component removing unit for removing a flare component of the second image read in the first reading condition, based on the second image read in the first reading condition and the flare component derived by the flare component derivation unit.

Abstract: In various embodiments, a dynamic range converter includes a plurality of circuits, including at least one configurable circuit that operates based on configuration data. The plurality of circuits include a first color space converter to convert a source color space of a source video having a source dynamic range to nonlinear color space signals. A linearizer configured converts the nonlinear color space signals to linearized color space signals having a mastering dynamic range via a piecewise linear interpolation of a transfer function. A color volume transformer applies dynamic color transform metadata associated with the source video to generate master adjusted color space signals from the linearized color space signals. A delinearizer converts the master adjusted color space signals to nonlinearized color space signals via a piecewise linear interpolation of an inverse transfer function in accordance with a display dynamic range.

Abstract: In various embodiments, a dynamic range converter includes a first color space converter to convert a source color space of a source video having a source dynamic range to nonlinear color space signals. A linearizer configured converts the nonlinear color space signals to linearized color space signals having a mastering dynamic range via a piecewise linear interpolation of a transfer function. A color volume transformer applies dynamic color transform metadata associated with the source video to generate master adjusted color space signals from the linearized color space signals. A delinearizer converts the master adjusted color space signals to nonlinearized color space signals via a piecewise linear interpolation of an inverse transfer function in accordance with a display dynamic range. A second color space converter converts the nonlinearized color space signals to display domain signals. Other embodiments are disclosed.

Abstract: Provided is a graphical user interface for programming an embedded device and systems and methods of use thereof. The system for programming an embedded device using a graphical user interface (GUI) comprises the GUI, a processor, and a database. The embedded device includes one or more light sources. The GUI provides control elements associated with the light sources. The processor is configured to receive settings associated with the light sources via the control elements, the settings defining a lighting pattern of the light sources. The control elements include at least actuation, color, and brightness control elements. The processor can convert the settings into configuration data, which is transmitted to the embedded device and decoded by the embedded device. As a result of the decoding, the embedded device is set to generate the lighting pattern based on the configuration data.

Abstract: An image is captured. The image includes a calibration pattern. The calibration pattern includes displayed information about the calibration pattern. The displayed information and the calibration pattern are used to make a calibrated measurement.

Abstract: An image display method and a device are provided. The method includes: obtaining, according to a first red, green, blue (RGB) parameter of a pixel of an image and a first gamma value corresponding to the first RGB parameter, a second RGB parameter corresponding to a second gamma value, where a second transmittance of the second RGB parameter is equal to a first transmittance of the first RGB parameter; obtaining a hue (H) parameter and a value (V) parameter according to the first RGB parameter, and obtaining a saturation (S) parameter according to the second RGB parameter; obtaining a third RGB parameter according to the H parameter, the S parameter, and the V parameter; and displaying the pixel according to the third RGB parameter.

Abstract: A method of controlling performance of auto color registration (ACR) of a color image forming apparatus, and an image forming apparatus using the same are provided. The method of controlling performance of ACR includes forming a composite black image on a transfer belt, sensing the composite black image by using a sensor, measuring the sensed composite black image, and performing ACR correction when a measured width of the composite black image is greater than a previously set value. Accordingly, it is possible to prevent unnecessary performance of ACR control when no color misregistration has occurred. In this way, ACR control is performed in as short a time as possible so that performance of the image forming apparatus may be improved. Also, it is possible to prevent waste of ACR performance time and life span reduction of a driving source for ACR.

Abstract: The present disclosure relates to a detecting device and a detecting method of a transparent display panel. The method comprises: providing a reference pattern sheet having n pairs of first regions with a first color and second regions with a second color alternately arranged in a first direction, and each of the first regions and each of the second regions having a same predetermined width D in the first direction; forming a uniform predetermined illuminance on the reference pattern sheet; detecting directly the reference pattern sheet by a measuring device; detecting the reference pattern sheet through the transparent panel display by the measuring device; and thereby determining a clarity of the transparent display panel.

Abstract: A scanner system includes: a scanning unit that scans a document and generates scan image data; an image processing unit that performs an image process on first subject image data obtained from the scan image data to generate processed image data in a first case where the image process is instructed to be performed, the image process including: a first kind of image conversion process on the first subject image data using a first input-side color conversion profile; and a color correction process performed after the first kind of color conversion process; and an outputting unit configured to: output the processed image data to an outside in the first case; and output second subject image data obtained from the scan image data without the image process and the first input-side color conversion profile to the outside in a second case where the image process is not instructed to be performed.

Abstract: In an image forming device, a processor acquires a reference value set for the color combination of two different colors; determines whether the reference value meets an execution condition for correcting misregistration between the two different colors in two image pieces to be superposed one on the other, the determination being performed before forming a finished image including at least a color image portion formed by superposing one of the color image pieces on at least one of remaining color image pieces by using a plurality of image-forming units; forms registration marks for the two different colors in response to determination that the reference value meets the execution condition; and adjusts image-forming positions corresponding to the two different colors subject to correction of misregistration based on outputs of an light-receiving element providing detection results of the position of each of the registration marks.

Abstract: An image processing method includes, calculating a partial distance between a pixel of interest in an image and each of reference pixels, sequentially calculating a total distance between the pixel of interest and each of the plurality of the reference pixels based on the partial distance, determining a shortest total distance among the total distances that have been already calculated, in the sequential calculation of the total distance, and categorizing the pixel of interest based on the reference pixel corresponding to the shortest total distance, wherein, if the partial distance between the pixel of interest and a specific one of the reference pixels to be calculated is equal to or greater than the shortest total distance in the sequential calculation of the total distance, the calculation of the total distance between the pixel of interest and the specific one of the reference pixels to be calculated is omitted.

Abstract: An image forming apparatus includes an image forming unit configured to from a measurement image on a recording paper by a color material, a fixing unit configured to fix the measurement image onto the recording paper by heating, a measurement unit configured to measure the measurement image fixed onto the recording paper downstream of the fixing unit in a conveyance direction of the recording paper, and a control unit configured to perform control such that a period of time from when the recording paper passes through the fixing unit until the measurement unit measures color of the measurement image is longer than a period of time from when the recording paper passes through the fixing unit until the measurement unit measures density of the measurement image.

Abstract: The present disclosure provides a method for generating a test chart for Gamma value of a display device and a method for testing Gamma value thereof. The method includes: determining a grayscale corresponding to a generated test chart for Gamma value of the display device, and determining luminance of a standard picture area represented by the test chart for Gamma value of the display device; determining a grayscale voltage of a test picture area according to the grayscale corresponding to the standard picture area in the display panel, and determining the luminance of the test picture area displayed by the display panel under the grayscale voltage; comparing the luminance of the test picture area and the luminance of the standard picture area, and determining the Gamma value of the display device according to the result of the comparison.

Abstract: An apparatus includes an image-forming unit configured to form an image, a measuring unit configured to measure the image, a control unit configured to control execution of single-color calibration to correct reproduction characteristics of a single-color formed by the image-forming unit based on a measuring result of a single-color image formed with a single-color recording agent, and execution of multi-color calibration to correct reproduction characteristics of a multi-color formed by the image-forming unit based on a measuring result of a multi-color image formed with a plurality of color recording agents, and an evaluation unit configured to evaluate single-color reproduction characteristics with reference to a target value usable to evaluate the single-color reproduction characteristics by measuring the single-color image after execution of the single-color calibration.

Abstract: An image inspection apparatus for inspecting an image output on a recording medium by scanning the recording medium as a scanned image. The inspection apparatus having a display controller that controls display of a normal read image, which includes only permissible defects for each type of defect, in the normal image display area, and that controls display of an abnormal read image, which includes at least one impermissible defect for each type of defect, in the abnormal image area. The inspection apparatus also includes a defect permissible changing unit that receives a moving operation instruction, which moves the displayed image between the normal image display area and the abnormal image display area and that, in response to receiving the moving operation instruction, changes the permissible defect level of at least one type of defect.

Abstract: In accordance with one embodiment, an image forming apparatus comprises an image forming section configured to form a toner image on a printing recording medium, a fixing section configured to heat the printing recording medium printed with the toner image at a fixing temperature, a temperature control section configured to control the fixing section to a temperature above a color erasing temperature, a conveyance section configured to convey the printing recording medium or a color erasing recording medium to the fixing section, and a speed control section configured to control, according to a setting temperature of the fixing section, a speed ratio of a traveling speed of the fixing section to a conveyance speed of the conveyance section.

Abstract: In a method or system for processing a color print image for digital printing at a predetermined printing apparatus, the print image is deconstructed into color separations according to characteristic color curves of the printing apparatus. The color separations are stored in a data unit as greyscale bitmap images and at least one of a color code and color values are associated with each color separation in the data unit. The print image encoded in the data unit is presented at a display device for monitoring or management before printout at the printing apparatus, the print image being presented at the display device by means of at least one of the color code and color values associated with the respective color separations such that the individual color separations are transparently superimposed.

Abstract: Techniques related to printing are described herein. According to an example, color patches are to be printed on a substrate. The substrate can be positioned on a substrate support for operation of a color sensor in a color measurement zone. Dimension and location in the substrate of the color patches are selected such that, for each color patch, at least a portion of the color patch can be positioned on a support projection in the color measurement zone. In some examples, color analysis techniques are described.

Abstract: An image processing apparatus includes a first determination unit configured to determine whether a difference between the result of measuring a first chart formed by an image forming unit and a target value is larger than a first preset threshold value, and a control unit configured to, based on a result of determination by the determination unit, control execution of correction of reproduction characteristics of an image formed by the image forming unit by using the result of measuring a second chart formed by the image forming unit and the target value.

Abstract: In the image-forming system, each image-forming device is selectively capable of performing a test print process to form a test image and an image print process to form an image based on image data. Each image-forming device is configured to be set an execution condition that defines a condition to execute the test print process. Each image-forming device executes the test print process when the each image-forming device satisfies the execution condition. The first detecting unit is configured to detect an execution condition of an image-forming device among the plurality of image-forming devices. The setting unit is configured to set an execution condition of an image-forming device among the plurality of image-forming devices based on the execution condition detected by the first detecting unit such that at least two execution conditions among execution conditions of the plurality of image-forming devices are different from each other.

Abstract: An image capturing unit includes a sensor unit that captures a predetermined area including a subject; a reference chart that is arranged in the predetermined area and captured together with the subject by the sensor unit; an optical path length changing member that is arranged on an optical path extending from the subject to the sensor unit and is capable of changing a length of the optical path.

Abstract: An image forming apparatus includes an image forming portion that forms an image on a recording sheet, a transport path that transports the recording sheet with the image formed thereon by the image forming portion, a coating portion that performs a coating process that forms a coating film on the recording sheet that is being transported on the transport path, and a reading portion that reads a calibration chart on the recording sheet that is being transported on the transport path. The coating portion is disposed on the upstream side in a recording sheet transport direction of the reading portion on the transport path, a calibration process is performed for an image formed by the image forming portion, and the calibration chart is formed on the recording sheet by the image forming portion in order to perform the calibration process.

Abstract: An image evaluation apparatus includes a reading unit that includes a monochrome detection unit reading, in a focused state, an image formed on a recording material by an image forming apparatus that represents grayscale of the image by forming dots on the recording material, and a color detection unit reading the image in a defocused state; an image information obtaining unit that obtains image information for the image forming apparatus to form the image; a computing unit that computes a luminance and a chroma of an image supposed to be formed on the recording material by the image forming apparatus from the obtained image information; a comparing unit that compares a derived luminance with the computed luminance, and compares a derived chroma with the computed chroma; and an image evaluation unit that evaluates the image formed by the image forming apparatus, on the basis of results of comparison.

Abstract: A method and apparatus for exposure correction in scanners are disclosed. In the method, exposure is corrected for pixels received in an image sensor array. Exposure time is tracked for the incoming pixel data and a calibration factor is determined for correcting the gain, and the calibration factor is adjusted based on the tracked exposure time. In the apparatus, a scanner includes an illumination source and a sensor for receiving pixel data. Using values stored in a memory, circuitry is provided for determining a calibration factor, for tracking exposure time for the pixel data and for adjusting the pixel data based on the calibration factor and exposure time.

Abstract: An image forming apparatus includes an image forming portion for superposedly outputting a color toner image and a transparent toner image on a recording material; an image data obtaining portion for obtaining a color image data used for forming the color toner image and first and second transparent image data used for forming the transparent toner image; and an executing portion for executing an operation in a test mode in which a test image which collects and coordinates a predetermined number of images including a first image and a second image is outputted on the recording material smaller in number than the predetermined number. The first image is prepared by synthesizing and reducing the color image data and the first transparent image data. The second image is prepared by synthesizing and reducing the color image data and the second transparent image data different from the first transparent image data.

Abstract: An image forming apparatus includes a data converting module, a communicating unit, a differential data obtaining module, and a combining module. The data converting module is configured to convert image data to displayed image data. The communicating unit is configured to send via a network the displayed image, and to receive an edited displayed image via the network which is edited based on the displayed image. The differential data obtaining module is configured to obtain differential data of at least a difference between the image data and the edited image data. The combining module is configured to combine the image data with the differential data into combined image data.

Abstract: An image-forming apparatus includes a rotary body, an image-forming unit, at least two sensors, and a control device. The image-forming unit performs an image-forming operation. The at least two sensors read an image formed on the rotary body. The control device is configured to: control the image-forming unit to form a test image on the rotary body; control the sensors to read the test image formed on the rotary body to acquire at least two values each relating to one of the at least two sensors; calculate a weighted average value of the at least two values by using weightings that are assigned to the at least two values, respectively, one of the weightings being different from another of the weightings; and correct the image-forming operation using the weighted average value.

Abstract: Techniques for correcting the color uniformity of a laser printer of a digital press or other device are provided. A process for correcting the color uniformity of a laser printer may include scanning a test page by an inline scanner of a digital press, determining scanner signal data from the test page, determining a scanner polynomial fitted to the scanner signal data, and determining a non-uniform coverage polynomial from the scanner polynomial. Additionally, techniques for verifying the linearity of a scanner are also provided.

Abstract: The present specification discloses systems and methods for enabling users to troubleshoot multifunction devices using handheld devices, such as mobile phones. In one embodiment, software executing on the handheld device receives data indicative of an error state in a multifunction device, causes the handheld device to obtain and display an image representative of an area of the multifunction device which would need to be serviced to address the error state, determines instructions for addressing the error state, and causes the handheld device to display the instructions in relation to the image representative of an area of the multifunction device.

Abstract: An image processing device includes a rewriting unit that extracts attribute information of each image object from first page description language data and adds a special color space designating command including at least one color name parameter that represents the attribute information of each of the extracted image objects to rewrite the first page description language data into second page description language data; an RIP unit that interprets the second page description language data rewritten by the rewriting unit to obtain each pixel value of printing image data for a printing device; and a color converting unit that performs a color conversion process during the processing of the RIP unit, wherein the rewriting unit and the color converting unit share information on the correspondence between a color space and a combination of color name parameters for expressing the color space.

Abstract: An image forming apparatus includes a color measurement portion printing unit, a colorimeter, and an image evaluating unit. The color measurement portion printing unit prints at least one color measurement portion. The colorimeter measures a color of the color measurement portion. The image evaluating unit evaluates, on the basis of a measured color value obtained by the colorimeter and a predetermined reference value, whether or not an image printed in response to a print request satisfies quality requirements that are based on a predetermined standard. The image evaluating unit evaluates whether or not the image satisfies the quality requirements, on the basis of a measured color value of a color measurement portion whose color is the same as a color used in the image or whose color difference from the color used in the image is within a predetermined range, among plural color measurement portions.

Abstract: An optical-writing control device calculates correction values for use in correcting a transfer position at which developing-agent images are to be transferred onto a sheet, and overlaying positions at which the developing-agent images are to be overlaid, based on a detection signal output from a sensor upon detection of a correction pattern for use in correcting the transfer position and a correction pattern for use in correcting the overlaying positions. A timing of detecting the pattern for use in correcting the overlaying positions is determined based on a correction value calculated based on the detection signal output upon detection of the pattern for use in correcting the transfer position. The pattern for use in correcting the transfer position is caused to have a width, in the main-scanning direction, that is wider than the width in the main-scanning direction of the pattern for use in correcting the overlaying positions.

Abstract: Provided is an image reading apparatus including an imaging unit that images light incident from a medium on which an image is formed, a measurement unit that measures a color value on an image, based on image data obtained by the imaging unit, in correspondence with a position on the image, a generation unit that generates error information indicating an error included in the color value according to the color value measured by the measurement unit and a relative position of the position on the image with respect to an optical axis of the imaging unit, and an output unit that outputs the error information generated by the generation unit and the measured color value.

Abstract: According to an embodiment, provided is a controller that controls an image forming unit forming an image on a recording medium based on image data in which densities of a plurality of colors are specified for each pixel. The controller includes: a setting unit that sets a common representative value to a density of a specific color indicating one of the colors in each of a plurality of pixels included in a specific area indicating a specific area represented in the image data; and a determining unit that determines a density of each of the colors so that a sum of densities of the respective colors other than the specific color in the pixels included in the specific area becomes equal to or lower than a value acquired by subtracting the representative value from a reference value indicating a total amount restriction target of a total amount of toners.

Abstract: An image forming apparatus includes a base value setting unit and a correction value calculating unit. The base value setting unit sets a base value of an image process condition on the basis of the area ratio of an image to be formed. The correction value calculating unit calculates a correction value obtained by correcting the base value set by the base value setting unit on the basis of at least the pattern of the image. The image is formed based on the correction value calculated by the correction value calculating unit.

Abstract: A color adjustment apparatus includes an acquisition unit acquiring the color value for specified paper of a desired image forming apparatus and a color value for unspecified paper, a generation unit generating a relational expression associating the color value for the specified paper with the color value for the unspecified paper, a registration unit obtaining and registering an association between the property information of a reference color for the unspecified paper and the relational expression, a calculation unit calculating the predicted color value for the specified paper of another image forming apparatus based on a relational expression associated with the property information of the reference color of arbitrary paper and the color value for the same paper of the other image forming apparatus, and a setting unit setting the predicted color value as a color value to be reproduced by the desired image forming apparatus.

Abstract: Methods and systems methods calculate an initial matrix by correlating scanned test device-dependent values to device-independent color space values of a test sheet. The initial matrix converts device-dependent values to device-independent color space values; however, the initial matrix does include some conversion error. Such methods then calculate an inverse matrix from the initial matrix. These methods and systems then calculate target device-dependent values by applying the device-independent color space values to the inverse matrix. The methods and systems derive final one-dimensional look-up tables that isolate the conversion error by correlating the scanned test device-dependent values to the device-independent color space values. These methods and systems then derive a final matrix specific to the scanner by first applying the scanned test device-dependent values to the final one-dimensional look-up tables before creating the final matrix.

Abstract: In a case where a parameter received from an application is a first parameter, an information processing apparatus receives data included in the parameter as string type data, converts the received data into binary data, and transmits the converted data to a printing apparatus. In a case where the received parameter is a second parameter, the information processing apparatus transmits data corresponding to the second parameter to the printing apparatus.

Abstract: An image forming apparatus capable of performing gradation correction without causing a user to perform a troublesome operation. The image forming apparatus includes an image reading unit that reads an original. A chart is formed on a recording material, and the recording material having the chart formed thereon is conveyed to the image reading unit via a shared conveying path used for both of reading the original and forming an image on the recording material. The conveyed recording material is read by the image reading unit, and gradation correction is performed based on the chart read by the image reading unit.

Abstract: Methods and devices calibrate a printing device to develop a single calibration tone reproduction curve associated with a first halftone state for the printing device, and calculate a primary color profile for the first halftone state and secondary color profiles for the secondary halftone states available with the printing device based on a previously calculated relationship between the first halftone state and the secondary halftone states. Subsequently, these methods and devices receive a print job and such methods identify the secondary halftone state of the print job. With this, the methods and devices can identify a secondary color profile from the secondary color profiles that corresponds to the secondary halftone state and raster image process the print job using the secondary color profile to produce rasterized output. Then, these methods and devices print the rasterized output on print media using a print engine of the printing device.

Abstract: An image examination apparatus includes a generation unit configured to generate an examination image for examining a read image; an extraction unit configured to extract, from the examination image, multiple reference points used for alignment between the examination and read images; a calculation unit configured to calculate information on misalignment between positions of the reference points and positions corresponding respectively to the reference points in the read image; an excluding unit configured to exclude a reference point from the multiple reference points, based on the information on misalignment; an alignment unit configured to perform alignment between the examination and read images based on the reference points other than the excluded reference point; and an examination unit configured to perform examination for determining whether there is a defect in the read image on the basis of a difference between the read and examination images.

Abstract: A device for calibrating scanned image includes a scanning unit arranged in a paper transmitting path for capturing texts and images on a document and transferring into electrical signals, a set of transmitting device which includes at least a first transmitting roller arranged upstream to the scanning unit, and a second transmitting roller arranged downstream to the scanning unit. There is no other transmitting roller arranged between the first and the second transmitting rollers, the distance between the first and the second transmitting rollers is shorter than the length of the document, and the second transmitting roller is faster than the first transmitting roller. A paper sensor is arranged in the paper transmitting path for detecting the position and the velocity of the document, and a control unit is connected with the paper sensor and the scanning unit to adjust the scan frequency in response to the position and the velocity of the document.

Abstract: A method for making a color transform for an output device is provided. The color transform represents a correspondence relation between a first and a second color space. Each of the two color spaces involves a number of color channels and the color channels of the second color space control the colorants in the output device. An excess relation for the color channels of the color space associated with the output device is established and only color points in the second color space wherefor a sum of the excess values related to the color point is lower than a predetermined limit, are included in the color transform. This enables to adapt the shape of a color gamut to a behavior of the colorants and enhances the flexibility in making a color transform for various print processes.

Abstract: A resistive touch device with no visual color difference comprises a first transparent conductive substrate, a second transparent conductive substrate and a spacer layer. The first transparent conductive substrate with a bottom thereof has a plurality of first transparent conductive electrodes, and a first voltage difference in a first direction. The second transparent conductive substrate with a top thereof has a plurality of second transparent conductive electrodes, and a second voltage difference in a second direction. The first direction is perpendicular to the second direction. The spacer layer is formed between the first and second transparent conductive substrates, which is used for isolating the first transparent conductive electrode and the second transparent conductive electrode.