摘要:
A printer includes a print controller that operates in accordance with a software product stored in a memory device of the printer. The software product includes instructions for the print controller to store a first page of print data in a first data buffer while printing a page according to a second page of print data pre-stored in a second data buffer. In one embodiment the software product includes instructions to decompress edge-runlength encoded print data.
摘要:
Provided is a page expansion and printing method for a pagewidth inkjet printer. The method features the step of receiving a page description having a bi-level black layer and a contone CMYK (Cyan Magenta Yellow black) layer from a host and storing said page description in a memory. The method also includes the steps of decompressing the respective layers in parallel, halftoning the contone CMYK layer to bi-level CMYK, compositing the bi-level black layer over the bi-level CMYK layer, and transmitting the image to a memory buffer for printing by the pagewidth printer.
摘要:
When an output unit to produce output is specified through an instruction terminal 11 and original data is input to a color proof generation section 12, a color conversion section 13 acquires a color conversion parameter corresponding to the specified output unit from a color conversion information storage section 14 and performs color conversion processing for the original data so as to accomplish precise color reproduction in the specified output unit. A rasterizing section 15 expands the original data after undergoing the color conversion processing into raster data while using an enormous number of fonts in a font storage section 16. The raster data provided by the rasterizing section 15 is transmitted from a communication section 17 through a network 4 to the specified output unit. If a remote system 2 or 3, which receives the raster data, prints out on output unit 21 or 31, a color proof whose color is reproduced precisely can be provided.
摘要:
An inkjet printer includes a body housing a print engine configured to transport print media. The print engine includes a replaceable ink cartridge for storing ink, and a printhead assembly configured to eject the ink upon the print media. A retractable cover is pivotally mounted relative to the body and is able to be pivoted to form a guide which can guide print media to the print engine for printing. A capping mechanism is configured to cap the printhead assembly.
摘要:
When a color reproduction model of a device is generated, colorimetry of a 9×9×9 grid, for example, is performed utilizing equidistant signal values in the color space of the device. Generally, if the number of grid points is increased, the precision with which the color reproduction model is estimated rises but the time needed for measurement is prolonged because the number of colorimetric measurements is also increased. Accordingly, in a printer system comprising a pre-color-processing table for performing color matching and a post-color-processing table for performing color separation, color patches set non-equidistantly in RGB device color space are printed in accordance with changeover of printer CMYKcm signals in the post-color-processing table and the color reproduction model of the printer is generated using data obtained by measuring the colors of the color patches.
摘要:
A print control system adapted to control a digital printer having a first machine-readable ink of a first colour and a second ink that is not machine readable at the same wavelength as said first ink and that is of substantially the same colour, said system being adapted to control said printer to print upon a document in said first ink a position -determining pattern readable by a digital pen to enable said pen to acquire data to enable a position of said pen in said pattern to be determined, and to print human discernable content that is not read by said pen superposed with said pattern using said second ink and not said first ink.
摘要:
An ejection control device includes a memory for storing a correspondence table between gray-scale data items and ejection pattern data items, each gray-scale data item determining the number of droplets to be ejected to a corresponding pixel so as to express a desired gray-scale level of the pixel, each ejection pattern data item determining the ejection timing of droplets; and a converter for converting each gray-scale data item of the corresponding pixel to the corresponding ejection pattern data item by referring to the table. In the table, the setting of the ejecting position can be freely adjusted. In particular, an ejection pattern having ejection data bits discretely distributed for one pixel range can be easily achieved. Moreover, compliance with system changes can be achieved simply by rewriting the table.
摘要:
This invention prevents smear and boundary bleeding and allows for printing of black images such as black characters with high quality. For this purpose, an AND operation generates print Bk data by culling original Bk data. Based on the data culled by the AND operation, PCBk application data generation operation generates PCBk application data that is used to apply C, M, Y color inks capable of forming a black by color mixing. Based on the PCBk application data, C, M, Y application data 1 for applying smear prevention color inks, C, M, Y application data 2 for applying boundary bleeding prevention color inks and original C, M, Y data. print C, M, Y data are generated.
摘要:
A recording apparatus has a buffer for dividing a storage area into a plurality of areas in a scanning direction of a recording head to record data by allowing a carriage loaded with the recording head to scan data on a record medium, and storing the divided image data in a divided area unit, and includes: a write control unit for controlling write address information about image data in the area unit for data of each color for storage of the image data divided in an area unit in the buffer; a read control unit for controlling for data of each color read address information for a read of image data stored in the buffer; and a record data generation unit for generating record data in a unit of the divided area based on the read image data according to the read address information.
摘要:
A method for image processing data representing a page to be printed includes the step of respectively receiving, in a data processing apparatus, external to a printer, data representing a bi-level black layer and a contone layer of a page to be printed. In the data processing apparatus, a halftoning process is applied to data representing the contone layer to form a bi-level cyan, yellow, magenta, and black (CYMK) layer. In the data processing apparatus, a compositing process is applied to data representing the bi-level black layer to composite the bi-level black layer over the bi-level CYMK layer to form a bi-level CYMK image of the page to be printed. The data representing the halftoned and composited layers is compressed to generate compressed image data. The compressed image data is written to the printer. An expansion process is applied to the compressed image data in the printer to generate data representing the page to be printed. The page is printed with the printer.