A printing output method and device

Abstract

The invention discloses a printout method and device. The printout method and device are used for increasing the rasterization speed of a variable bar code and improving the output accuracy of the variable bar code. The printout method comprises the steps that a PDF file is generated through elements in a typesetting space, and when the variable bar code exists in the typesetting space, metadata of the variable bar code are written into the PDF file; rasterization processing is carried out on an object in the PDF file, and when it is determined that the metadata of the variable bar code exist in the PDF file, rasterization is carried out on the metadata of the variable bar code; page cached data are generated through for result obtained after rasterization of the object in the PDF file and are sent to printing equipment of a specific resolution ratio for printout.

Description

technical field [0001] The invention relates to the technical field of graphic image printing processing, in particular to a printing output method and device. Background technique [0002] Portable Document Format (PDF) Raster Image Processor (RIP) is a software for rasterization processing. It supports the processing of the print description language in PDF format and generates device-dependent rasterized dot matrix data. To a PC or server, the PDF RIP software appears as a stand-alone application. PDF RIP software has the following features: [0003] Rasterize the printing device-independent print description language into device-dependent dot matrix data. Since the content described in the PDF print description language is independent of the device, when it is necessary to re-display the content described on the printing device, it is necessary to use PDF RIP to perform the corresponding interpretation and conversion work; [0004] Perform self-enclosed computing tas...

AI Technical Summary

Problems solved by technology

When the barcode described by vector is used for rasterization in PDF RIP, it is necessary to rasterize the vector barcode with the floating point description position into the pixel with the corresponding integer description position in the page dot matrix. The floating point calculation error causes the relative position between the black and white segments of the barcode to change. There is a deviation, which is finally reflected in the decrease of the accuracy of the barcode generated in the page dot matrix or the inability to be recognized by the barcode scanning device

When a barcode described by a raster image at a specific resolution is output to an inkjet digital printing machine with a different resolution, the PDF RIP needs to perform magnification (sampling or interpolation) processing on the dot matrix data when rasterizing, which also leads to The position of the black and white segment of the barcode deviates, which is finally reflected in the decrease of the accuracy of the barcode in the dot matrix of the page or the inability to be recognized by the barcode scanning device

At the same time, the use of the above methods to generate variable barcodes will also lead to excessive PDF data generation and a decrease in the processing speed of PDF RIP during rasterization under the premise of massive data processing, and eventually the speed sent to the device cannot match the inkjet. Output speed of digital printing presses

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