Abstract:
A method and apparatus for compressing and decompressing electronic documents, with maximum intradocument independence, and maximum flexibility in optimization of compression modes. The method includes receiving documents containing unknown combinations of a plural data types, including combinations of scanned data, computer rendered data, compressed data and/or rendering tags; dividing the received image into stri ps of blocks determining from the image itself, which data types are present in each block; compressing data of each data type present in each block with a compression method optimized for its data type. Scanned data may be further segmented into plural scanned data types, where each data type is compressed in said compressing data step with a compression method optimized for said scanned image data type. If the received data type is compressed data, the process may include the additional functions of determining a compression ratio thereof, and accepting the compressed data for use as, or decompressing and recompressing the data, based on acceptability of said compression ration determination. An instruction set i s generated that allows detailed decompression instruction data and image data to be combined with transmitted compressed data. A data structure is shown, which segregates data types and instruction data, and allows for block to block and strip to strip processing independence.
Abstract:
AN INK JET MULTIPLE FIELD ELECTROSTATIC LENS An ink jet printer is disclosed of the type wherein a plurality of nozzles emit parallel streams of droplets toward a target. Each nozzle has a charging electrode to charge droplets selectively depending upon whether a particular droplet is intended for the target or a gutter. A pair of deflection plates span the paths of the droplet streams and deflects the charged droplets according to information to be printed. A multiple field electrostatic lens is used to align charged droplets from different nozzles to a common line on the target dispite misalignments between nozzles relative to the common line.
Abstract:
PROBLEM TO BE SOLVED: To perform spot color changing in a short time. SOLUTION: The hybrid single pass, multi-pass full color printing system 200 comprises a plurality of single-pass image output modules 20-50, each of which includes an image carrying member 10 and a single developer housing 16 containing a monochroic developer forming color image on the image carrying member 10; and at least one single pass, multi-pass image output module 260 having an image bearing member 10 and a plurality of selectable developer housings 216A. Each of the selectable developer housings 216A includes a single spot color developer forming spot color image on the image support member by single pass and by multi-pass for transferring onto the ITB 110. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To simply calibrate the color adjustment of an output image in a color-marking apparatus. SOLUTION: A target image which is composed of a preselection color, which is selected in advance, is converted into a control signal by a front-end converter 14 according to the color reproduction curve of the color marking apparatus 10. The apparatus 10 performs marking operation of the output image by the control signal, and a parameter which indicates the color of the image is measured by a sensor 12, on the basis of the image. According to the parameter, a point control-type controller 26 creates a control point for tone reproduction curve adjustment. A color balance controller 24 creates a color reproduction curve of the apparatus, on the basis of the control point.
Abstract:
PROBLEM TO BE SOLVED: To identify dimensional depth of each of a plural number of multiple coded source images in a compound image created by rendering. SOLUTION: A plural number of source images are coded, and a plural number of source images so coded in the compound images are combined, and the rendering of the compound images is carried out in physical geometry by depositing the narrow band coloring agent chosen on a sheet of paper in image form, and at least one among the first and the second source image is perceived with the different dimensional depth in the compound images where the rendering is performed at the time of controlled illumination of the compound image where the rendering is performed using a plural number of narrow band illuminants. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To generate halftone dots at a high speed and at a low cost by providing the block of a memory for storing a prescribed halftone dot pattern, a sequence for generating an index as the function of the position of a picture element and a memory address circuit in superscalar design. SOLUTION: A Holladay sequencer 40 is provided with a block 42 for calculating a block index parameter beforehand. The block parameter calculated beforehand is supplied to a dot address sequencer 44 and initial and succeeding Holladay address components are generated for the respective picture elements. The respective first input of a memory block 50 is the output of the sequencer 40 and controls a sequence operation inside the block for indicating the halftone dot. Second input is the picture element or a picture element level to be made into the halftone stored in a latch 52. By using such a circuit, a memory address is generated.
Abstract:
PROBLEM TO BE SOLVED: To execute halftoning in a raster image processor. SOLUTION: An image processing system prepares a document image, a raster content image mixed with a common exchange format, from an input device comprising a controller, wherein a document image is formatted in a first document format for outputting from an output device, the output document image is formatted in a second document format, the document image is described with an image signal, a system is inputted by the input device, the image signal formatted in the first document format is converted to the common exchange format, the first document format includes one of a document scanning format and a document creating format, the image signal formatted in the common exchange format is converted to the second document format, and the second document format includes one of a document viewing format and a document marking format. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a method for compensating variation of system performance related to attributes of an image in an image rendering system. SOLUTION: This method includes steps for selecting first and second attributes to change at least one value of the first and second attributes; for rendering a diagnostic image based on the changed value of the combination of the first and second attributes to sense an image quality from the rendered diagnostic image; for calculating image attribute compensation tone reproduction curve data of the first attribute/the second attribute based on the sensed image quality; for storing tone reproduction curve data of the first and second attributes for using them in rendering an image having the changed value of the combination of the first and second attributes; for receiving formation image data for a formation image having the first and second attribute values; and for applying the stored first/second attribute tone reproduction curve data to the received formation image data to generate compensated image data. COPYRIGHT: (C)2004,JPO