Riso Kagaku Corporation

Tsutomu Kurose

Yoshiyuki Okada

Junichi Hakamada

Mitsuaki Ishitoya

Kouichi Nobushima

Takahiko Nakamura

Daisuke Orikasa

Yuuki Aida

Koichi Nobushima

Hong Yang

The printing deviceincludes a print control unitwhich, if an authentication print job data is received at a timing when transition from a ready mode to a sleep mode is about to occur, causes the printing deviceto transit to the sleep mode and, and if a normal print job data is received at the timing, causes a printing engine unitto print the normal print job data before transiting to the sleep mode.

Print device which, when authentication print job data at a timing when transition is about to occur is received, causes the print device to transition and interferes transition if normal print job is received

An image processing device determines whether or not a data size per page of a received print job is greater than a preset threshold. When it is determined that the data size is greater than the threshold, the image processing device estimates a first RIP time per page, which is the time required to RIP process when a resolution of an image of the print job is not optimized, an optimization time per page, which is the time required to optimize, and a second RIP time per page when the resolution of the image of the print job is optimized. Then, the image processing device optimizes the resolution of the image of the print job on the basis of the first RIP time, the optimization time, and the second RIP time so that the rates of decreasing the resolution in each image after conversion are substantially the same.

Image processing device

A density corrector performs a density correction processing on a resolution-converted image dataset to obtain a density-corrected image dataset by: determining whether each of first and second pixels in the resolution-converted image dataset is a deletion-target pixel, the first pixels each being a pixel located at a position including a longitudinal edge in a second original image, the second pixels each being a pixel located at a position including a lateral edge in the second original image, patterns of edges in regions in the first and second original images corresponding to the deletion-target pixel being the same; correcting a density of the deletion-target pixel to '0'; and correcting a density of respective pixels other than the deletion-target pixel among the first and second pixels to a value equal to or larger than an original density of the respective pixels.

Image processing device for generating and printing image data for one or some of colors at a higher resolution than the other colors

An image processing device includes a print image data generator and a density adjuster. The print image date generator generates print image data for each of colors to be used to print a document image from image data of the document image including a barcode image and a background image overlapped on the barcode image as a background. The density adjuster performs at least one of processing to reduce the density of the barcode image in at least any one of pieces of the print image data of colors including the barcode image and processing to reduce the density of the background image within a neighboring region that neighbors a bar of the barcode image in at least any one of pieces of the print image data of colors including the background image.

Image processing device and image processing method

A printing device includes a barcode area dividing unit that divides a barcode area of a printing sheet into plural division areas along a Y direction, and a barcode area ejection amount conversion and output unit that controls an ink jet printing unit to print black bars such that an X direction is a direction in which the black bars and white bars are alternately arranged and occupancy dimensions of ink of pixels are different in the division areas divided by the barcode area dividing unit.

Barcode printing control device

A color conversion is performed to convert a data of a pixel of black in an object as determined to be a mask into a pixel data of composite black, and convert a data of a pixel of black in an object as not determined to be any mask into a pixel data of composite black or real black, and a set of pixel data of an object as color-converted is operated and processed as a source.

Image processing system, image processing method, and storage medium

For a halftone representation of a grayscale data of an original image of P tones, an output resolution, a screen ruling frequency, and a screen angle are based to set a basic array of L&#xd7;L pixels, where L is an integer greater than 1, and a number N of tones reproducible by the basic array is compared with P to generate a dither array using the basic array as its sub-array, such that numbers are assigned to pixels of sub-arrays by a prescribed rule, in order between the sub-arrays, starting from prescribed ones of centered and centermost pixels of the sub-arrays.

Image creating method and image creating system

The types of pixels of an image made up of a plurality of pixels arranged in a first direction and a second direction substantially perpendicular to the first direction are distinguished. The image is divided into a plurality of blocks, the number of pixels which are determined to be an edge pixel in each block is counted, and whether each of pixels in each block is a halftone pixel is determined on the basis of the number of the pixels which are determined to be an edge pixel in the block. When a plurality of pixels continuous in the first direction and/or the second direction are determined to be edge pixels, the number of edge pixels in each block is modified by counting as an edge pixel only a predetermined number of pixels in the set of the pixels consisting of the continuous pixels which are determined to be an edge pixel, and whether each pixel in the block is a halftone pixel is determined on the basis of the modified number of the edge pixels in the block.

Method of and apparatus for distinguishing type of pixel

Halftone pixels are distinguished from non-halftone pixels in pixels making up an image according to a predetermined algorithm based on a result of edge detection for determining whether the pixels are edge pixels. The pixels which have been determined to be non-halftone pixels according to the predetermined algorithm, are continuous to the pixels determined to be halftone pixels according to the predetermined algorithm including those which have been redetermined to be halftone pixels and are not lower than a predetermined threshold density in density are all redetermined to be halftone pixels.

Growing community of inventors

Ibaraki-ken, Japan

Tsutomu Kurose