Peking University

Beijing Founder Electronics Co., Ltd.

Founder Information Industry Holdings Co., Ltd.

Weiping Huang

Hongyu Liu

Zhangwei Meng

Hao Lin

Xingxin Sun

Xiaoxiao Xing

Linyi Li

Junje Kang

An image printing method and printer is provided. The method comprises obtaining an original data file of an image to be printed from a database; dividing the original data file into a plurality of first data files and storing the first data files in a plurality of first memory blocks correspondingly; receiving an image printing request, the image printing request carrying first position information of the image to be printed; determining from its position information of the image to be printed second position information contained in the first position information, and filling a first data file corresponding to the second position information to a second memory block from the first memory block where the first data file is located through memory mapping mechanism to form a second data file to be printed; and printing and outputting the second data file in the second memory block.

Image printing method and printer for segmenting an image to create first data files and first memory blocks and printing each data file using print position information

An ink jetting digital printing apparatus supporting double-side printing is provided. The ink jetting digital printing apparatus comprises: a first sprayer module and a corresponding first group of color plane control servers, a second sprayer module and a corresponding second group of color plane control servers, a rasterization image processing server, and a system control server. The first and second sprayer modules comprise a group of sprayers of the same two or more colors; the first group comprises color plane control servers in one-to-one correspondence with sprayers in the first sprayer module; the second group comprises color plane control servers in one-to-one correspondence with sprayers in the second sprayer module; the first group color plane control servers parallel with the second group color plane control servers.

Ink jetting digital printing apparatus and method supporting double-side printing

The application discloses a method for double-sided printing with two colors. The method comprises a step of receiving two pages of original four-color page lattice according to a printing order each time, a step of extracting effective data of first and second colors in the two pages of original four-color page lattice, respectively and a step of writing the data of the first and second colors extracted respectively into data of first color, second color, third color and fourth color of a new page of four-color page lattice, respectively. The application discloses an apparatus for double-sided printing with two colors including a printing controller, and the printing controller includes an original page receiving module configured to receive two pages of original four-color page lattice according to a printing order each time, an extracting module configured to extract effective data of first and second colors in the two pages of original four-color page lattice, respectively, and a new page generating module configured to write the data of the first and second colors extracted respectively into data of first color, second color, third color and fourth color of a new page of four-color page lattice, respectively. The invention improves the printing efficiency.

Bi-color duplex printing method and device

A method for rasterizing transparent pages scans each transparent page twice. The first scanning syntactically interprets a page description file of the transparent page, divides it into page blocks, and writes information of image element objects and transparency parameters into intermediate files. The second scanning reads the image element objects and the transparency parameters from the intermediate files and builds a page bitmap in blocks. A device for rasterizing transparent pages includes interpreting, dividing, file storing and building units. The interpreting unit implements syntactical interpretation. The dividing unit divides pages into transparent and nontransparent page blocks. The building unit implements rasterization according to the transparent or nontransparent page blocks, the information of image element objects and the transparent parameters to build a page bitmap in blocks. The methods and devices herein improve the efficiency of building a page bitmap and decrease memory utilization during generation of the page bitmap.

Methods and devices for rasterizing transparent pages

This invention relates to the field of computer image processing technology, particularly, to a method for adding marks in the process of page rasterizing, which in detail is the method for adding marks on the output medium when description files of pages are output in raster imaging devices. The description files of pages are generally PostScript file, i.e. PS file, and Portable Document Format (PDF) files, i.e. PDF file. The prior art has disadvantages of poor compatibility, slow speed and the like. The present recognizes adding various marks to description files of pages in the process of page rasterizing in an RIP, thereby it is possible to add marks to any of PS files and PDF files without pre-scanning the description files of pages, and obtain good flexibility and compatibility substantially without effects on speed.

Growing community of inventors

Beijing, China

Weiping Huang