Abstract: Disclosed herein is a display including: a pixel array part configured to include pixels arranged in a matrix, each of the pixels including an electro-optical element, a write transistor for sampling and writing an input signal voltage supplied through a signal line, a holding capacitor for holding the input signal voltage written by the write transistor, and a drive transistor for driving the electro-optical element based on the input signal voltage held in the holding capacitor.

Abstract: A display having a front plane, a back plane and a border edge. The display includes a color changing cell located behind the front plane of the device and a first and second electrically conducting attachment layer. The color changing cell includes an active color layer having at least one active color area. The active color layer is associated with a first electrically conducting layer which overlaps at least one active color area. The color changing cell also includes a counter layer associated with a second electrically conducting layer. A first electrically conducting attachment layer extends from the active color area and overlaps the first electrically conducting layer. A second electrically conducting attachment layer extends from the counter layer and overlaps the second electrically conducting layer. The display may be coupled to an electronic circuit for use in a variety of applications. The display may also be used to form a device having a plurality of displays.

Abstract: An organic light emitting diode (OLED) display includes an illuminance sensing unit configured to sense an external illuminance, a brightness determination unit configured to determine a brightness of the OLED display according to an illuminance sensed by the illuminance sensing unit, a driving voltage determination unit configured to determine a driving voltage corresponding with a current saturation point of the OLED display, the driving voltage being determined based at least in part on a driving current and the brightness determined by the brightness determination unit, a voltage conversion unit configured to receive an input voltage, generate a first voltage higher than the input voltage, and generate a second voltage lower than the input voltage, and a display unit configured to receive the first and second voltages from the voltage conversion unit and display an image.

Abstract: There is provided a driving circuit including; a plurality of output terminals to be electrically connected to the scan wirings, respectively; a scan controlling unit for selecting one or plural output terminals to output a driving signal for the scan wiring from among the plurality of output terminals; a potential correcting unit for controlling a potential of the driving signal on the basis of a difference voltage between the potential of the selected output terminal and a reference potential; and a reference potential adjusting unit for adjusting the reference potential in response to a current passing through the selected output terminal in order to correct a voltage drop caused by a member connected to the selected output terminal. The reference potential adjusting unit changes adjustment of the reference potential in response to the number of the selected output terminals.

Abstract: A power factor correction circuit (PFC) including a switch, a feedback signal generator for generating a feedback voltage corresponding to an output voltage, and a switching controller for receiving the feedback voltage and for controlling turn-on/turn-off of the switch. The feedback signal generator includes first and second resistors serially connected to first and second ends of an PFC output terminal; a first capacitor connected between a first node of the first and second resistors and the first end of the PFC output terminal; and a comparator for comparing a voltage of the first node and a reference voltage, and for generating a feedback voltage.

Abstract: The present invention relates to a display, a timing controller and a column driver IC, and more particularly to a display, timing controller and column driver integrated circuit using clock embedded multi-level signaling. The present invention provides a timing controller including a transmitter for transmitting a transmission signal wherein a transmission clock signal is embedded therein between a transmission data signal to have a signal magnitude different from that of the transmission data signal. The present invention also provides a column driver integrated circuit including a receiving unit for separating a clock signal from a received signal using a magnitude of the received signal, and for performing a sampling of a received data signal from the received signal using the separated clock signal.

Abstract: The invention relates to a method and device for tracking the sweet spots of a sweets spot unit for a transmissive electronic display. The aim of the invention is to improve the reproduction quality and the uniformity of illumination in displays of this type. The display contains a sweet spot unit consisting of an illumination matrix (1) and reproduction elements, in addition to an image matrix (4). Once the position of at least one observer's eye (6) has been determined by a control unit using inverse ray tracing, address data for activating illumination elements (LE) of the illumination matrix (1) is provided from the position data in order to prepare the defined sweet spots (5) for said observer's eye (6). To improve the reproduction quality, an additional optical component is used in ray path for the inverse ray tracing process.

Abstract: Provided is a method of driving a discharge display panel that applies a reset driving signal to all display cell in the discharge display panel during an initialization period. The reset driving signal includes a rising voltage signal and a descending voltage signal. A rising rate of the rising voltage signal and the descending rate of the descending voltage signal change depending on temperature of the discharge display panel.

Abstract: The present invention relates to a display, a column driver integrated circuit, and a multi-level detector, and multi-level detection method, and more particularly to a multi-level detector, multi-level detection method, a display and column driver integrated circuit reducing a possibility of an error by removing the common mode from the received multi-level signal. The present invention provides a multi-level detector including a common mode removing circuit for removing a common mode of a differential multi-level signal, and a first and a second comparators for detecting multi-level using the differential multi-level signal being removed of the common mode.

Abstract: The invention relates to a method for the pictorial representation of a three-dimensional measuring data record, comprising the creation of the three-dimensional measured data record by means of a computer tomographic or nuclear spin tomographic device, the processing of a first subset of the three-dimensional measured data record for a pictorial reproduction in a first pictorial representation in a first representation layer, and the processing of at least one second subset of the three-dimensional measured data record for a pictorial reproduction in at least one second pictorial representation in at least one second representation layer, wherein at least one value of at least one orientation parameter for the determination of the orientation of the at least one second representation layer with respect to the first representation layer can be selected by means of a control device.

Abstract: A 3D image generation and display system facilitating the display of high-quality images in a Web browser comprises means for creating 3D images from a plurality of different images and computer graphics modeling and generating a 3D object from these images that has texture and attribute data; means for converting and outputting the 3D object as a 3D description file in a 3D graphics descriptive language; means for extracting a 3D object and textures from the 3D description file, setting various attribute data, and editing and processing the 3D object to introduce animation or the like and assigning various effects; means for generating various Web-based 3D objects from the 3D data files produced above that are compressed to be displayed in a Web browser and generating behavior data to display 3D scenes in a Web browser with animation; and means for generating an executable file comprising a Web page and Web-based programs such as scripts, plug-ins, and applets for drawing and displaying 3D scenes in a Web br

Abstract: A terrain modeling system provides a terrain model having variable resolution. The system receives an input terrain made up of raster points. The system identifies raster points that differ in height from an adjacent raster point by a threshold. The system interpolates the identified raster points to calculate one or more B-spline surfaces. The surfaces correspond to a multi-dimensional representation of a physical terrain.

Abstract: Single-camera image processing methods are disclosed for 3D navigation within ordinary moving video. Along with color and brightness, XYZ coordinates can be defined for every pixel. The resulting geometric models can be used to obtain measurements from digital images, as an alternative to on-site surveying and equipment such as laser range-finders. Motion parallax is used to separate foreground objects from the background. This provides a convenient method for placing video elements within different backgrounds, for product placement, and for merging video elements with computer-aided design (CAD) models and point clouds from other sources. If home users can save video fly-throughs or specific 3D elements from video, this method provides an opportunity for proactive, branded media sharing. When this image processing is used with a videoconferencing camera, the user's movements can automatically control the viewpoint, creating 3D hologram effects on ordinary televisions and computer screens.

Abstract: Provided are a method and apparatus for mapping texture onto a 3-dimensional (3D) object model. The method includes converting object model data, in which at least one object is modeled, into object model data of a predetermined view point, generating raster graphics data expressing the texture of the object by data in pixel units based on vector graphics data expressing the texture of the object in a geometrical equation, and mapping the texture formed of the generated raster graphics data onto an object model expressed by the converted object model data. By using the method, the amount of resources and operations are low, and thus various effects can be realized which could not be realized due to a limit in processing speed. Accordingly, an appearance of reality of a 3D image can be remarkably improved.

Abstract: The invention provides a system for modeling three-dimensional objects using hybrid geometric/volumetric representation, wherein sharp edges are created by a geometric representation that is connected to the volumetric representation. The system creates, maintains, and updates the hybrid representation according to user input. The system also provides for conversion of the hybrid representation into either a wholly geometric representation or a wholly volumetric representation, as may be needed for output to a given device, such as a display device, a printer, and/or a fabricating device.

Abstract: A placement position of a sketched image into a three-dimensional space and viewing point direction are determined using the angle method or the three-point method, and the cross-section lines of a door cross-section line and center cross-section line of a vehicle depicted in the sketched image is determined and, based on the obtained cross-section line and center cross-section line, a spatial curved surface of the vehicle in the three-dimensional space is determined, distortion is corrected, and a curved surface is created.

Abstract: A method and apparatus for a frustum culling algorithm suitable for hardware implementation. In one embodiment, the method includes the separation of coordinates of a normal vector of each frustum plane of a frustum view into positive normal coordinates and negative normal coordinates. In one embodiment, the separation of the coordinates of each normal vector of the frustum planes enables implicit selection of the coordinates of a negative vertex (N-vertex) of an axis-aligned bounded box (AABB). Once implicitly selected, it is determined whether the N-vertex of the AABB is outside at least one frustum plane. In one embodiment, a determination that the N-vertex of the AABB is outside at least one of the frustum planes provides a trivial reject of objects enclosed by the AABB that are therefore is excluded from the rendering process. Other embodiments are described and claimed.

Abstract: Early Z scoreboard tracking systems and methods in accordance with the present invention are described. Multiple pixels are received and a pixel depth raster operation is performed on the pixels. The pixel depth raster operation comprises discarding a pixel that is occluded. In one exemplary implementation, the depth raster operation is done at a faster rate than a color raster operation. Pixels that pass the depth raster operation are checked for screen coincidence. Pixels with screen coincidence are stalled and pixels without screen coincidence are forwarded to lower stages of the pipeline. The lower stages of the pipeline are programmable and pixel flight time can vary (e.g., can include multiple passes through the lower stages). Execution through the lower stages is directed by a program sequencer which also directs notification to the pixel flight tracking when a pixel is done processing.

Abstract: A method and apparatus for texture mapping a surface. The method is applicable to texture mapping either a two-dimensional representation (image) of a three-dimensional surface as well as a three-dimensional computer model of a three-dimensional surface, such as a triangular wire mesh model. In one embodiment, the texture mapping process involves user-specification of a plurality of constraints, including texture flow constraints, texture discontinuities, and surface underfolds. A triangular wire mesh model of the surface to be textured is generated. The mesh allows a continuous texture distribution to be specified as a linear interpolation of texture values at the triangular vertices. User-specified constraints are preserved as edges within the triangular mesh. The triangular mesh is used to compute a weighted energy functional expressed in terms of nodal texture values.

Abstract: The triangular mesh generating portion divides the surface of geometry model to be meshed in a meshed manner according to a target element dimension and generates a triangular mesh on the surface of geometry model. The regular mesh generating portion assumes a shaped parallelpiped enclosing the shape to be meshed. The parallelpiped is divided in a meshed manner by the hexahedral element whose distance between the nodes has the substantially same density as the triangular mesh on the surface. The resulting regular mesh located inside the triangular mesh on the surface of geometry model is divided into a tetrahedral meshed manner. The shell meshing area extracting portion extracts a shell-like space between the inner tetrahedral mesh and the triangular mesh on the surface of geometry model. The shell mesh generating portion generates the tetrahedral mesh in the overall shape to be meshed.

Abstract: A system and program product for re-meshing of a three-dimensional (3D) input model using progressive implicit approximating levels are provided. Specifically, an initial quadrilateral mesh for a 3D input model is provided. Then, an implicit approximating field is built for a first approximating level (L) of the 3D input model using an implicit surface modeling technique. An iso-contour of the implicit approximating field is then extracted, and the quadrilateral mesh is fit to the first approximating level (L). The fit between the quadrilateral mesh and the first approximating level (L) is then estimated, and it is determined whether the fit meets a predetermined quality criterion. If not, the quadrilateral mesh is refined using one or more of a sequence of topological operations are performed to improve the fit. The process is then iteratively repeated for subsequent approximation levels until one of the subsequent approximation levels is fit to the 3D input model.

Abstract: A method and apparatus for generating a two-dimensional output image of a slab multi-planar reformatting (MPR) volume data set from a selectable view point and view direction is described. The method comprises factorising a view transform matrix into an intermediate transform matrix and a warp transform matrix. The intermediate transform matrix is such that voxels in the volume data set map to pixels in an intermediate image in which neighbouring voxels in a plane of the volume data set which is most parallel to tie plane of the output image are separated by an integer number of pixel along each of tie axes of the intermediate image. The intermediate transform matrix is applied to the data set to provide an intermediate data set. A projection of the intermediate data set along the view direction is performed according to a desired projection algorithm to provide the intermediate image. The wrap transform matrix is then applied to the intermediate image to provide the output image.

Abstract: Embodiments of the present invention generate a stable incremental layout of a hierarchical graph by determining a level of the layout for each new node of the graph using information about hidden nodes of the graph, determining positions of nodes on levels of the layout using information about hidden nodes of the graph, and determining coordinates of new nodes in the layout without using information about hidden nodes.

Abstract: There is described a method for generating a 2-D image of a 3-D object represented by a volume data set comprising a multiplicity of data points each having an opacity value. A plurality of notional rays are cast through the 3-D object and for each ray, a ray path is divided into a plurality of base sampling intervals defined by data points on the path. If it is determined that a difference in opacity values across a base sampling interval can become greater than a pre-determined value, successively smaller sampling regions are generated within the base sampling interval until it is determined that a difference in opacity values across each generated smaller sampling interval in the base interval is less than the pre-determined threshold. Values indicative of an interaction between the ray and the 3-D object in the sampling intervals along the path are accumulated using a direct volume rendering procedure to determine a pixel value in the 2-D image.

Abstract: A graphics processing system and method for displaying an image having first and second graphics processors coupled together. A main display device is coupled to the first graphics processor. Secondary display devices are coupled to the second graphics processor. The first and second graphics processors are operable to share processing for displaying the image on the main display, or the first graphics processor is operable to process a main portion of the image for displaying the main portion of the image on the main display and the second graphics processor is operable to process secondary portions of the image for displaying the secondary portions of the image on the secondary display devices.

Abstract: A multi-mode parallel graphics rendering system (MMPGRS) employing multiple graphics processing pipelines (GPPLs) and real-time performance data collection and analysis during the automatic control of the mode of parallel operation of the GPPLs. The MMPGRS supports multiple modes of parallel operation selected from the group consisting of object division, image division, and time division. The GPPLs support a parallel graphics rendering process that employs one or more of the object division, image division and/or time division modes of parallel operation in order to execute graphic commands and process graphics data, and render pixel-composited images containing graphics for display on a display device during the run-time of the graphics-based application.

Abstract: This disclosure describes techniques of loading batch commands into a graphics processing unit (GPU). As described herein, a GPU driver for the GPU identifies one or more graphics processing objects to be used by the GPU in order to render a batch of graphics primitives. The GPU driver may insert indexes associated with the identified graphics processing objects into a batch command. The GPU driver may then issue the batch command to the GPU. The GPU may use the indexes in the batch command to retrieve the graphics processing objects from memory. After retrieving the graphics processing objects from memory, the GPU may use the graphics processing objects to render the batch of graphics primitives.

Abstract: A display device for use with a computer adapted for operation in an unrestricted use mode and a limited function mode and a method for enforcing a limited function mode display is disclosed. The display device enters a limited function mode when a condition of non-compliance with an operating policy is discovered by the computer. Additionally, the display device may also enter a limited function mode upon powering up or when connections to the computer and/or selected components of the display are disabled or disconnected. When in the limited function mode, the display may support a limited function interface for use in correcting the condition of non-compliance.

Abstract: A display system comprises a plurality of display devices, a plurality of display control devices, each display device O connected to at least one display control device, a data processing device and a data network, the data processing device connected to each display control device via the data network. The data processing device is arranged to transmit a control signal to a display control device, the control signal comprising video signal configuration data, the video signal configuration data comprising timing and frequency data. Alternatively or additionally, the control signal can comprise at least one of power saving data, memory use data, brightness and contrast data, colour temperature data or display address data.

Abstract: The invention relates to a method, a system and a computer program for dynamic imaging of a moving object. First, motion between the elements of common portions of images Im(t), Im+1(t) is computed. At step 1 motion compensation the said elements is performed, using a suitable transformation. Assuming that Im+1 is the image that has to be transformed, its motion from m to m+1 is compensated applying the inverse motion estimation Formula (I) resulting in the reformatted image Formula (II) at position m. At step 2 grey value interpolation is performed, based on image Im and the transformed image I?m+1 resulting in j interpolated images Formula (III) with o<i?j. At step 3 spatial interpolation is carried out yielding a series of images for dynamic imaging of the moving object. The spatial interpolation is calculated placing the images Formula (III) at position i resulting in j images Formula (IV) with 0<i?j and the transformation's weighting factor w=i/j.

Abstract: A first digital image is acquired of a framed area while illuminating the background and foreground object under a first lighting condition. A second digital image is then acquired of the same framed area while illuminating the background and foreground object under a second lighting condition. Preferably, the first lighting condition illuminates the background without illuminating the foreground object so that a silhouette of the foreground object is acquired in the first image. The second lighting condition illuminates the foreground object (e.g., with frontal lights). Due to the difference in the illumination between the background and silhouette in the first image, an alpha mask can be created from the first acquired image. Using the mask, the background from the second image can be removed and replaced by virtually any other desired background image.

Abstract: A method of displaying information on a mobile terminal. The method includes displaying an object on a screen of the mobile terminal, receiving at least two least two input signals corresponding to the displayed object, and animating the displayed object based on the at least two signals corresponding to the displayed object. In addition, the at least two input signals include a) first and second touching signals of the screen of the mobile terminal, b) touching and tilting signals of the mobile terminal, or c) a first proximity signal and a second proximity signal of the mobile terminal.

Abstract: The driving apparatus of a display device calculates a slope using a minimum gray, a maximum gray, a gray average of frame data in a current frame, and a gray average of frame data in a previous frame, and corrects and outputs the input frame data according to the slope, using frame data of one frame. As a result, a gray range of the input image signal can be extended, thereby improving visibility. Further, in a case of a motion picture, even when a difference of a gray range of images of adjacent frames is large, an original image is not distorted due to extension of a gray range. Also, even when noise is included in the input image signal, a gray range can be extended after removing the noise.

Abstract: A display device is provided. The display device includes: a panel assembly including: a plurality of gate lines; a plurality of data lines; and a plurality of pixels defined by the plurality of gate lines and the plurality of data lines. The device also includes a backlight unit including: a plurality of scan lines; a plurality of column lines; and a plurality of backlight unit pixels defined by the plurality of scan lines and the plurality of the column lines. The backlight unit is configured to: calculate an average grayscale level of an image of a first frame; determine a first grayscale level according to the plurality of pixels corresponding to the panel assembly pixels; and apply a weight value corresponding to the average grayscale level to change the first grayscale level to a compensated grayscale level.

Abstract: A display system and method created by adjusting the properties of one or more displays to obtain coarse control over display behavior, by using sensors to optimize display parameters and meet a quality target. The display may construct a display map by selectively driving the display and sensing the optical image created. The system reports on its status, and is able to predict when the system will no longer meet a quality target. The system and method may optimize a display system and keep it optimized over time. Operators of the display who require a minimum level of quality for the display system can be ensured that the display meets those requirements. And, they can be warned in advance as to when system maintenance can be necessary, when quality falls below targeted goals system and method provides for sending out methods of the quality of the system.

Abstract: A color display device including: at least one spatial light modulation element forming a display picture by modulated light obtained by modulating illumination light, a color sequential light generation device changing in a time series the illumination light or the modulated light into multiple groups of different color lights in one frame of a display period of the display picture, a control device controlling the spatial light modulator, and a color sequential light generation device based on the input picture data. The control device controls the spatial light modulator and the color sequential light generation device to change the ratio of the display time of each color of the reflected light time-shared in the display period of the frame depending on the character and/or the set value of the input picture data.

Abstract: A display system includes a spatial light modulator for displaying a image by the modulation state of a plurality of micromirrors, and a control device for controlling the spatial light modulator. The control device includes a data conversion device for converting the digital image data into non-binary data, and a modulation-control device for generating a modulation control signal for micromirrors depending on the non-binary data, and controlling the spatial light modulator. The modulation state of the micromirrors by the modulation control signal includes modulation by oscillation of the micromirrors. The modulation control signal controls amplitude of the oscillation to be smaller than the maximum amplitude of the micromirrors in the modulation by the oscillation of the micromirrors. The oscillation having smaller amplitude than the maximum amplitude of the micromirrors is repeated by the modulation control signal in an optional time duration or frequency.

Abstract: The present invention improves, in a display device to which normal display data and interpolation data are inputted from the outside, the moving image performance by applying overdrive processing to both of a bright frame and a dark frame. The display device includes a display panel having a plurality of sub pixels, and a driver for outputting a video voltage corresponding to the display data to the respective sub pixels. The display data inputted from the external system is constituted of normal display data and interpolation display data inserted between the normal display data. The signal generation circuit includes an overdrive circuit for applying overdrive processing to the normal display data and the interpolation display data inputted from the external system, and a gray scale conversion circuit for converting the gradation of display data applied overdrive by the overdrive circuit.

Abstract: An emission apparatus includes an emission element, a pixel drive circuit connected to the emission element, a data line connected to the pixel drive circuit, and an emission drive apparatus that, in a selection period, lets a reference current with a predetermined current value flow to the pixel drive circuit via the data line, derives a compensation voltage which is a difference between a potential which varies according to a unique characteristic of the pixel drive circuit and a predetermined reference potential, and generates a correction gradation voltage to be applied to the pixel drive circuit based on the compensation voltage for causing the emission element to emit light at an appropriate luminance gradation.

Abstract: A display device includes a display panel having a plurality of video lines, and a drain driver receiving n-bit display data, and connected to the plurality of video lines. The drain driver includes a gray-scale voltage generating circuit which generates M (M<2n) pieces of gray-scale voltages, a decoder circuit which selects two gray-scale voltages from the M pieces of gray-scale voltages based on upper-order bits of the n-bit display data, an operational amplifier which includes k (k?3) pieces of non-inverting input terminals and one inverting input terminal connected to an output terminal of the operational amplifier, and a switching circuit which selects the two gray-scale voltages of the decoder circuit, and applies the two gray-scale voltages to the k pieces of non-inverting input terminals of the operational amplifier based on lower-order m (n>m?2) bits of the n-bit display data.

Abstract: Provided is an ink refill unit for a print engine. The unit includes a body assembly defining an ink ejection port at one end thereof, a compressible tank located inside said body assembly, and a compression arrangement for compressing the bellows tank. The compression arrangement includes actuation means selectively operable by a controller of the print engine, a threaded wall and circular plunger assembly, and an elongate drive gear mounted within the body assembly and engaging with the plunger assembly. The drive gear is actuated by the actuation means. The threaded wall and circular plunger assembly includes an internal lead screw provided in a substantially cylindrical internal wall of the body assembly and a helical geared thread provided about the circumference of a substantially circular plunger threaded to the internal lead screw thread and extending along a length thereof.

Abstract: In a switch provided in a driver device and connected to a driver, a terminal and a lever is separated from each other (in the separated state) when a predetermined electric potential is not applied to a gate electrode. When a predetermined electric potential is applied to the gate electrode, the lever of the corresponding switch is deformed by electrostatic force between the gate electrode and the lever and comes into contact with the terminal, and thus the terminals are connected with the lever (in the contact state). A plurality of drivers are connected to the terminals of two or more of switches, respectively, and, when a driving potential is outputted from a driver, the driving potential is applied to a surface individual electrode connected to the switch in the contact state.

Abstract: A printing system includes a printhead having adjacent inkjet nozzles for dispensing a common colored ink and a controller adapted to direct firing of the adjacent inkjet nozzles so that adjacent local areas using the common colored ink are printed on a printing medium with alternate firings of the adjacent inkjet nozzles.

Abstract: A printer is provided which has a printhead integrated circuit having a row of aligned printhead nozzles and a controller for supplying data to the printhead integrated circuit. A sequential group of the nozzles at one end of the printhead integrated circuit are offset from the other nozzles of the row. The printer controller is configured to control order and timing of the supplied data to compensate for the offset nozzles during printing.

Abstract: One or more scans used to apply a specific ink are varied according to the overlapping conditions of the specific ink and a non-specific ink, and bias in the specific ink nozzle usage frequency and bias in the printing ratio among passes is suppressed. For this purpose, one or more scans used to apply the specific ink are determined on the basis of applying amount information for the specific ink and the non-specific ink. For example, the one or more scans used to apply the specific ink are determined such that the ratio of specific ink applied by the last half of plural scans is greater for a unit pixel whose application ratio of non-specific ink to specific ink is greater than a predetermined ratio than for a unit pixel whose application ratio of non-specific ink to the specific ink is less than the predetermined ratio.

Abstract: A method includes ejecting liquid having a first composition from a first droplet ejection deposition system that includes a first printhead and a first fluid source, collecting information on the behavior of the liquid under a variety of ejection conditions for the first droplet ejection deposition system, and ejecting liquid having the first material composition from a second droplet ejection deposition system that includes a second printhead and a second fluid source under the selected ejection conditions. The first printhead has a small number of flow paths, and the first fluid source is configured to hold a small volume of liquid. The second printhead has a plurality of substantially identical flow paths, each of the flow paths being substantially identical to at least one of the small number of flow paths, and there being a significantly larger number of flow paths in the second printhead than in the first printhead.

Abstract: An object of the present invention is to provide an ink jet printing method and ink jet printing apparatus capable of outputting a smooth monochrome photograph with indistinctive beading and conveying unevenness even in monochrome black mode for printing an image by using achromatic color inks. For this object, if it is determined that printing is carried out in the monochrome black mode, different mask patterns, such as mutually-exclusive mask patterns or mask patterns having a logical product result that shows a state where low-frequency components are less than high-frequency components, are set for two or more kinds of achromatic color inks. Use of such mask patterns suppresses the generation of grains of achromatic color inks, increases dispersibility of the grains, and also makes positions where conveying unevenness appear indistinctive.

Abstract: The conventional print-controlling apparatus performs printing with CMY inks and additional inks having a lower lightness than CMY inks, which are mixed in a specific ratio when ejected from the print head, so that colors in the entire range from low to high lightness are expressed. Unfortunately, chromatic color inks differing in hue from CMY inks have a low lightness or a high density, and this leads to poor granularity in the region of high lightness. This disadvantage is eliminated if color conversion is accomplished by using the granularity improvement LUT 15c that limits the deposition of RV inks. In this way it is possible to limit the ejection of RV inks in the region of high lightness and to improve the ink granularity in the region of high lightness.

Abstract: A liquid ejecting apparatus includes a head group having a plurality of heads provided with supply ports for supplying liquid to the heads, the heads being arranged in a nozzle-array direction and ejecting the liquid therefrom to form an image; and a heating portion that heats the liquid to be supplied to the head group, the heating portion being disposed between the supply ports of the heads located at opposite ends in the nozzle-array direction.

Abstract: A system optically detects and measures release agent on a rotating image member in an ink jet printer. The system includes a collimated light source oriented to direct a collimated beam of light generated by the source towards a rotating image member, an image sensor for generating an image of a portion of the rotating image member from a portion of the collimated beam of light reflected by the rotating image member, an image differentiator for measuring a difference between a first image generated by the image sensor and a second image generated by the image sensor, and a release agent measurement generator that is coupled to the image differentiator to receive the difference between the two images and to generate a measurement of the release agent on the rotating image member.