Seiko Epson Corporation

Yasutoshi Takeuchi

Tetsuya Matsumura

Masaya Usui

Naoki Sudo

Takashi Kobayashi

Tomonaga Hasegawa

Takuma Hayashi

Atsushi Goto

A printing apparatus includes a head configured to discharge liquid to a printing medium, a carriage configured to move the head back and forth to one side and another side in a scanning direction with respect to the printing medium, and a control unit configured to perform printing of a printing image with the liquid by controlling driving of the head and the carriage. When performing printing of an end portion of the printing image on the one side, the control unit performs the printing by a first scan in which the head is moved from the one side to the other side, and when performing printing of an end portion of the printing image on the other side, the control unit performs the printing by a second scan in which the head is moved from the other side to the one side.

Printing apparatus and printing method

A recording control device that controls a recording device that discharges a dot to perform recording includes an edge detection unit configured to detect an edge of an image represented by image data, and a recording control unit configured to generate dot data specifying the dot based on the image data and to cause the recording device to perform recording based on the dot data. The recording control unit causes an internal region, located on an inner side of an edge region including the edge of the image, to be recorded using a dot having a smaller size than that of a dot used for recording of the edge region, or to be dot-off.

Recording control device, recording device, and recording control method

A recording device includes a recording unit configured to execute recording on a recording medium using a color material of cyan, magenta, yellow, and black, and a control unit configured to control recording executed by the recording unit, wherein the control unit causes the recording unit to record an edge region of black data included in image data using at least the color material of black, causes the recording unit to record an inner region on an inner side of the edge region of the black data using at least the color material of cyan, magenta, and yellow, and sets the amount of the color material of black per unit area of the edge region to be greater than the amount of the color material of black per unit area of the inner region.

Recording device and method setting amount of black in edge region greater than amount of black in inner region

An image processing device configured to generate printing image data used during printing from input image data including a bar code constituted by a bar element and a space element that are a plurality of elements arranged based on a predetermined standard, includes a frequency distribution calculation unit configured to acquire widths of the plurality of elements respectively to calculate a frequency distribution of the widths of the plurality of elements, a standard width determination unit configured to determine a standard width of the plurality of elements of the barcode in the printing image data using the frequency distribution, and a correction unit configured to correct the widths of the plurality of elements of the barcode in the printing image data to the standard width.

Image processing device, printing apparatus, and image processing method

An image processing apparatus includes: a code detector configured to detect a code included in image data, and a number-of-pixels converting unit configured to increase the number of pixels of the image data by converting the number of pixels of the image data by a factor of N, wherein, when N is a non-integer, the number-of-pixels converting unit converts the number of pixels in a first region including the code in the image data by an integer factor and converts the number of pixels in a second region different from the first region in the image data by a factor of N.

Image processing apparatus, printing system, and image processing method

An image processing method includes dividing a desired image into a normal region formed with partial images and a joint region formed by overlapping the partial images, first converting image data in an RGB color space corresponding to the normal region into normal region CMYK data in a CMYK color space using a normal region LUT, second converting the image data in the RGB color space corresponding to the joint region into joint region CMYK data in the CMYK color space using a joint region LUT derived based on attribute information of the printing medium and environmental information of an environment in which the printing apparatus is to perform printing, and generating printing data based on the normal region CMYK data and the joint region CMYK data.

Image processing method, image processing device and printing system utilizing different gradation tables in overlapping regions based on attribute and environmental information

A printing apparatus including a code information detecting unit configured to detect code information in image data, and a printing controller configured to control bidirectional printing to repeat a first scan including ink ejection in accordance with movement of a printing head to a first side in a main scanning direction, a second scan including ink ejection in accordance with movement of the printing head to a second side in the main scanning direction, and medium transport performed between the first scan and the second scan. The printing controller is configured to perform printing by any one of the first scan or the second scan in an area of the code information detected by the code information detecting unit, during the bidirectional printing based on the image data.

Printing apparatus and printing control apparatus

An image processing method for generating printing data includes correcting, in accordance with a degree of reduction in a dot coverage below a predetermined dot coverage in a region that undergoes printing in an overlapped manner by a first nozzle group and a second nozzle group, at least either of a first sharing ratio for the first nozzle group sharing positions of dots to be formed in an overlapping image region and a second sharing ratio for the second nozzle group sharing positions of dots to be formed to allow a total ratio of the first sharing ratio and the second sharing ratio to exceed 100%, and correcting a color conversion table based on the first sharing ratio and the second sharing ratio, after the correcting of at least either of the first sharing ratio and the second sharing ratio.

Correcting sharing ratios of nozzle groups in overlapping image region and correcting color conversion table based thereon

In order to reduce a density difference that appears when printing whose execution number of scan operations is changed is performed, a CPU acquires a plurality of color conversion LUTs; the CPU performs printing of each of normal portions of color patches using a reference LUT and performs printing of each of hitch portions of the color patches using a corresponding one of mutually different color conversion LUTs; the CPU allows a color patch having a small density difference to be input as a selection result; the CPU identifies a color conversion LUT corresponding to the selection result; and the CPU designates the color conversion LUT corresponding to the selection result as a color conversion LUT for the hitch portion.

Liquid discharge control apparatus, liquid discharge control method, and liquid discharge control program

In Safter the first halftone, a scanning path is determined. In S, a printing region to undergo multipass printing is fragmented. In S, a printing time gap between the first printing time and the second printing time is calculated in the printing position. In S, the position of the scanning path is associated with information on a color conversion table corresponding to the time gap. In the subsequent second color conversion, the color conversion table for use in color conversion is switched to the color conversion table corresponding to the time gap by using information on the pre-specified position of the scanning path and information on the color conversion table.

Printing control device, printing control method, and printing control program

Main scanning performed two times by interposing sub-scanning of a distance longer than a pitch of nozzles of s nozzle line in the sub-scanning direction is referred to as first main scanning and second main scanning, a region in which a print image is formed at s time of the first main scanning is referred to as a first print region, and a region in which the print image is formed at a time of the second main scanning is referred to as a second print region. A printing control device for a printing unit (printing apparatus) includes a record density acquisition unit that acquires record density of the print image in a determination region including at least a part of the first print region based on the print data; and a sub-scanning control unit that changes an overlap between the first and second print regions in the sub-scanning direction.

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Nagano, Japan

Yasutoshi Takeuchi