摘要:
When positional information expressed by a black dot pattern and an image other than the positional information recorded as color dots are recorded, black data and color (cyan, magenta, and yellow) data are compared. If the black dots and color dots are provided in the same positions, data conversion is performed so that color dots corresponding to those positions are not formed. Thus, bleeding resulting from overlaps of positional information image with the other image is reduced to prevent the degradation of recording quality, and waste of ink is prevented.
摘要:
One pixel is sub-divided on the basis of ejection ports. Pixel patterns are provided at respective quantization levels, each of which are defined using dots having different sizes. Image data is processed using a pixel pattern selected according to the type of printing medium and image quality to be achieved, and printing is performed using the image data. Only ejection ports ejecting ink droplets in the same size are driven at the same timing for ejection.
摘要:
In a printing apparatus which performs printing by scanning a printhead having printing elements arrayed in a predetermined direction on a printing medium in a direction crossing to the array direction on the basis of information transmitted from a host apparatus, stores print data transmitted from the host apparatus, and has a buffer smaller in capacity than a print data amount printed on the printing medium by one scanning of the printhead, the buffer is divided into a plurality of blocks corresponding to rectangular regions printed by scanning. The use order of the blocks is so managed as to circularly store print data in the blocks along with the progress of printing. When print data representing non-driving of the printing elements successively exist in a predetermined amount, the predetermined amount of print data is represented by specific control data without storing the predetermined amount of print data in the blocks. High-speed, high-quality printing can be achieved with a low-cost arrangement having a memory smaller in capacity than a data amount printed by one main scanning.
摘要:
To provide an ink jet printing apparatus and ink jet printing method capable of printing at high speed and high image quality in accordance with the distance between the head and the paper. In performing a first print mode for printing to a unit region of the print medium by making the print head scan N times (N: positive integer), and executing a second print mode for printing to the unit region of the print medium by making the print head scan M times (M: positive integer, M>N), the distance between the print head and the print medium (distance between the head and the paper) in the first print mode is made shorter than that in the second print mode.
摘要:
A printing apparatus receives, from a host apparatus, main scanning/printing direction information representing the main scanning/printing direction of a printhead. The printing apparatus stores, in a print buffer, print data corresponding to the printing direction represented by the main scanning/printing direction information generated by the host apparatus. The CPU of the printing apparatus controls printing by the printhead on the basis of the main scanning/printing direction information and the print data stored in the print buffer.
摘要:
The ink jet printing apparatus of this invention is intended to reduce degradations in image quality caused by color mixing due to bleeding of inks of different colors and thereby enable printing an image with high quality at high speed. To this end, in the ink jet printing apparatus of this invention, a plurality of different nozzle groups are main-scanned M times (M≧2) over a print area to print all print data to be printed on the print area to complete an image. The print head, successively perform the main scans over the print area in such a way that the print head, located at the front position in the printing order, performs an Mth main scan with a lower print density than that of an Nth main scan (1≦N
摘要翻译:本发明的喷墨打印设备旨在减少由于不同颜色的油墨渗色引起的色混合造成的图像质量下降,从而能够高速打印高品质的图像。 为此,在本发明的喷墨打印设备中,多个不同的喷嘴组在打印区域上主扫描M次(M> = 2),以打印要打印在打印区域上的所有打印数据,以完成 一个图像。 打印头依次在打印区域上执行主扫描,使得位于打印顺序的前面位置的打印头以比第N主扫描的打印密度低的打印密度执行第M次主扫描( 1 <= N
摘要:
A recording apparatus is provided with two or more kinds of sub-scanning amounts per main scan, and records a high quality image by reducing the bleeding between colors created characteristically by a multi-pass recording method. The number of times of main scanning to complete an image by a first discharge port array for black ink use and a second discharge port array for color ink use, respectively, are set to be m (m is a positive integer) and n (n is a positive integer) times. With respect to discharge ports to be used for recording in the first and second discharge port arrays, a distance between discharge ports which are positioned at upstream ends of the respective first and second discharge port arrays in the sub-scan direction is made equal to a length of a continuously conveying amount of (m+a) (a is a positive integer) times by combination of the at least two kinds of conveying amounts.
摘要:
This invention reduces an unprinted stripe occurred by edge deviation of a printhead. An inkjet printing apparatus according to this invention can execute a first printing mode in which an image is printed by scanning the printhead in a first region on the printing medium N times and scanning the printhead in a second region adjacent to the first region (N+1) times, and a second mode in which an image is printed by scanning the printhead in the first region M times and scanning the printhead in the second region (M+1) times. The width, in the conveyance direction of the printing medium, of the second region printed in the second printing mode is narrower than the width, in the conveyance direction of the printing medium, of the second region printed in the first printing mode.
摘要:
When an image representing positional information, formed with black spot pattern and the other image formed with color inks including cyan, magenta, and yellow are recorded on the same recording medium, the gradient of color data is corrected during data preparation of colors used for recording the image other than the black spot pattern, according to the duty of the black spot pattern. Thus, even if the other image is recorded to overlap with the black spot pattern, color changes of the image can be prevented to produce a high-quality image.
摘要:
To provide an ink jet printing apparatus and ink jet printing method capable of printing at high speed and high image quality in accordance with the distance between the head and the paper. In performing a first print mode for printing to a unit region of the print medium by making the print head scan N times (N: positive integer), and executing a second print mode for printing to the unit region of the print medium by making the print head scan M times (M: positive integer, M>N), the distance between the print head and the print medium (distance between the head and the paper) in the first print mode is made shorter than that in the second print mode.