CN105323417B - A kind of print data processing method - Google Patents
A kind of print data processing method Download PDFInfo
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- CN105323417B CN105323417B CN201510626596.0A CN201510626596A CN105323417B CN 105323417 B CN105323417 B CN 105323417B CN 201510626596 A CN201510626596 A CN 201510626596A CN 105323417 B CN105323417 B CN 105323417B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/46—Colour picture communication systems
- H04N1/56—Processing of colour picture signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/46—Colour picture communication systems
- H04N1/64—Systems for the transmission or the storage of the colour picture signal; Details therefor, e.g. coding or decoding means therefor
- H04N1/648—Transmitting or storing the primary (additive or subtractive) colour signals; Compression thereof
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- Signal Processing (AREA)
- Facsimile Image Signal Circuits (AREA)
- Color Image Communication Systems (AREA)
Abstract
The present invention provides a kind of print data processing method, and native file format page to be printed is converted to 24 BMP bitmaps including host computer；Institute's host computer creates two 8 BMP bitmap caching areas, two 1 BMP bitmap caching areas and two jbig file buffer areas；Host computer carries out pixel judgement to 24 BMP bitmaps, is 8 BMP bitmaps of 8 BMP bitmaps of a red and a black by 24 BMP bitmap-converteds；8 BMP bitmaps of red 8 BMP bitmaps and the black are carried out image optimization processing by host computer；1 BMP bitmap of red 1 BMP bitmap and the black is carried out image Compression by host computer；The red jbig file and black jbig file are sent slave computer by host computer, carries out the processing of slave computer print data, completes red, black double-colored printing.The present invention has print data treatment effeciency high, and consumables cost is low, the good advantage of red, black degree of staining.
Description
Technical field
The invention belongs to print data processing technology fields, more particularly, to a kind of print data processing method.
Background technique
Printer is most common office output equipment, for printing black and white text and color image.Government at home
In the routine work of the dedicated client such as organ, frequently, production official document is needed using color printer for official document contact.
By taking color laser printer as an example, a complete print data treatment process is usually completed by four steps: first
First, file format conversion is carried out, original document, such as doc, txt, html file are converted into a width BMP bitmap file；Secondly,
Iconic model conversion is carried out, BMP bitmap file (RGB model) is converted into color printer private file (CMYK model)；Again
It is secondary, piece image is divided into four width images, respectively represent blueness, product, Huang, black four kinds of colors carbon dust ratio, by USB or with
Too net, by four width images from the toner cartridge that PC machine is issued to printer corresponding color；Finally, starting printing mechanism, according to four width
The carbon dust ratio of the data of image namely four kinds of colors draws corresponding carbon dust amount from four color toner cartridges, file printout is gone out
Come.
In above-mentioned print data treatment process, toner cartridge carbon dust only has blueness, product, Huang, black four kinds of colors, and other colors need
Being mixed in a certain ratio blueness, product, Huang, black, four color carbon dusts can just be tuned into.And one red pixel of printing is needed in same picture
Plain position duplicate printing four times sequentially fills four color carbon dusts in proportion.As the carbon dust of one of color is depleted, beat
The red also gradually deviation come is printed off, the production needs of official document are unable to satisfy.And the drum powder dosage of other colors is less, it is long
Time shelves the problems such as will appear agglomeration, causes the waste of consumptive material.In addition to this, above-mentioned print data treatment process is very multiple
It is miscellaneous, format transformation and color model are not only needed, also needs for piece image to be divided into four width images, data volume is big, and it is computationally intensive, it accounts for
With more PC machine resource and biggish printer memory space, cause the data handling procedure used time longer, printing rate is slower.
Summary of the invention
The present invention provides a kind of print data processing method, can effectively improve print data treatment effeciency.
In order to solve the above technical problems, the technical solution adopted by the present invention is that: a kind of print data processing method, comprising:
Native file format page to be printed is converted to euchroic mode bitmap by S1, host computer；
S2, the host computer create two grayscale mode bitmap caching areas, two netrual colour mode bitmap buffer areas and
Two compressed encoding file cache areas；
S3, the host computer determine the pixel column locations of the euchroic mode bitmap, and the euchroic mode bitmap is turned
It is changed to a red grayscale mode bitmap and a black gray mode bitmap, transformation result is respectively written into two ashes
Spend mode bitmap buffer area；
The red grayscale mode bitmap and the black gray mode bitmap are carried out image optimization by S4, the host computer
Processing, is respectively converted into red netrual colour mode bitmap and black netrual colour mode bitmap, transformation result is respectively written into described
Two netrual colour mode bitmap buffer areas；
The red netrual colour mode bitmap and the black netrual colour mode bitmap are carried out image by S5, the host computer
Compression processing is respectively converted into red compressed encoding file and black compressed encoding file, transformation result is respectively written into described
Two compressed encoding file cache areas；
Two compressed encoding files are separately sent to slave computer by S6, the host computer, carry out slave computer printing
Data processing.
Further, the euchroic mode bitmap is 24 BMP bitmaps, and the grayscale mode bitmap is 8 BMP bitmaps,
The netrual colour mode bitmap is 1 BMP bitmap, and the compressed encoding file is jbig file.
Further, the slave computer print data processing step includes:
The slave computer receives the red jbig file and the black jbig file that the host computer is sent；
The red jbig file and black jbig file are carried out image decoding processing by the slave computer, are restored respectively
At 1 BMP bitmap of red 1 BMP bitmap and black；
The slave computer starts printing mechanism, prints red 1 BMP bitmap and the black 1 BMP respectively
Figure.
The advantages and positive effects of the present invention are:
1, the present invention can effectively improve print data treatment effeciency.Official document only has red, black two kinds of colors, and existing
Technology is compared, and RGB model conversion is CMYK without carrying out image format conversion by print data processing method of the present invention
Model, then four color pixel dot matrix are divided into, but directly RGB bitmap is divided into two by pixel color, it is divided into red pixel
Dot matrix and black picture element dot matrix reduce algorithm complexity to reduce print data process flow, and then improve printing
Rate.
2, the present invention can reduce consumables cost.Compared with prior art, print data processing method of the present invention,
Coloring is mixed in proportion without using four color carbon dusts, but is directly coloured by red, black carbon powder.Same pixel without printing repeatedly
It four times, need to only print once, it is non-black i.e. red, reduce material loss, reduces use cost.
3, the present invention is red, black degree of staining is good.The present invention can by national standard modulate red carbon powder, solid colour no color differnece,
Be not in the prior art four color toner cartridge carbon dust amounts it is insufficient and the problem of cause red to deviate.
Detailed description of the invention
Fig. 1 is the flow chart of first embodiment of print data processing method of the present invention；
Fig. 2 is the flow chart of the second embodiment of print data processing method of the present invention；
Fig. 3 is the 3rd embodiment flow chart of print data processing method of the present invention；
Fig. 4 is the fourth embodiment flow chart of print data processing method of the present invention.
Specific embodiment
The present invention is intended to provide a kind of print data processing method, carries out image segmentation by host computer, extracts respectively
Then RED sector and black portions in BMP bitmap file again will to generate a width red image and a width black image
Red, black two images are forwarded to slave computer from host computer, carry out slave computer print processing, complete red, black double-colored printing.
Host computer PC drives red, black two-color printing to execute red, the black double-colored print data processing method jointly, completes
The production of official document prints.By taking a host computer and a slave computer execute page print as an example, in conjunction with attached drawing to the present invention
Specific embodiment elaborate.
As shown in Figure 1, in the first embodiment of the present invention, the print data processing method includes at least following step
It is rapid:
Native file format page to be printed is converted to euchroic mode bitmap by S1, host computer；
S2, the host computer create two grayscale mode bitmap caching areas, two netrual colour mode bitmap buffer areas and
Two compressed encoding file cache areas；
S3, the host computer determine the pixel column locations of the euchroic mode bitmap, and the euchroic mode bitmap is turned
It is changed to a red grayscale mode bitmap and a black gray mode bitmap, transformation result is respectively written into two ashes
Spend mode bitmap buffer area；
The red grayscale mode bitmap and the black gray mode bitmap are carried out image optimization by S4, the host computer
Processing, is respectively converted into red netrual colour mode bitmap and black netrual colour mode bitmap, transformation result is respectively written into described
Two netrual colour mode bitmap buffer areas；
The red netrual colour mode bitmap and the black netrual colour mode bitmap are carried out image by S5, the host computer
Compression processing is respectively converted into red compressed encoding file and black compressed encoding file, transformation result is respectively written into described
Two compressed encoding file cache areas；
Two compressed encoding files are separately sent to slave computer by S6, the host computer, carry out slave computer printing
Data processing.
On the basis of first embodiment, the second embodiment of the present invention is as shown in Fig. 2, to printing number of the present invention
Following steps are included at least according to processing method:
In step sl, processing is formatted.The printing interface that host computer PC driving calls application software to provide, with
For Word document in Windows XP operating system, the Windows XP platform printing interface for calling Word to provide, conversion
The file format of current page is converted to 24 BMP bitmaps by doc format.Then step S2 is executed.
In step s 2, two 8 BMP bitmap caching areas are established in host computer PC driving application in its memory, for dividing
It Cun Chu not 8 BMP bitmap files of red 8 BMP bitmap files and black.Distinguish table in two 8 BMP bitmap caching areas
Show the red page and the black page, the two described 8 BMP bitmap caching areas be initialized as 0 respectively, indicate the red page and
The black page is respectively white point.By resolution ratio 1200dpi, A4 breadth is calculated, each buffer area about 150MB.
Apply establishing two 1 BMP bitmap caching areas again, for storing red 1 BMP bitmap file and black 1 respectively
Position BMP bitmap file.The two described 1 BMP bitmap caching areas respectively indicate red dot matrix and black dot matrix, by described two
A 1 BMP bitmap caching area is initialized as 0 respectively, indicates red dot matrix and black dot matrix is respectively white point.By resolution ratio
1200dpi, A4 breadth calculate, each buffer area about 18MB.
Finally apply establishing two jbig file buffer areas again, for storing red jbig file and black JBIG text respectively
Part, two jbig file buffer areas are initialized as 0 respectively, indicate that jbig file not yet fills data.Due to JBIG number
Smaller according to measuring, each jbig file buffer area 10MB is enough.Then step S3 is executed.
In step s3, pixel determination processing is carried out.Host computer PC driving determines current 24 BMP bitmap pixels ranks position
It sets, since first pixel of first trip, moves pixel pointer from left to right, from up to down, until footline terminal column pixel, successively
Read each pixel in current 24 BMP bitmaps.It will determine two described 8 BMP bitmap caching areas of result write-in, will work as
Preceding 24 BMP bitmap-converteds are 8 BMP bitmaps of 8 BMP bitmaps of a red and a black.
In step s 4, image optimization processing is carried out.Red, black two-color printing is substantially two monochrome printers, is needed
Want 1 BMP bitmap rather than 8 BMP bitmaps.Therefore, first enhancing comparison is adjusted on the basis of 8 BMP bitmaps, reuses halftoning,
8 red 8 BMP bitmaps, black BMP bitmaps are respectively converted into red 11 BMP bitmap, black BMP bitmap, the method
Make it is red with transition white, between black and white color more naturally, level is clearly more demarcated.Then by described red 1 BMP
1 figure, black BMP bitmap are respectively written into two 1 BMP bitmap caching areas of step S2 application foundation, and described in release
Two 8 BMP bitmap caching areas.Then step S5 is executed.
In step s 5, image Compression is carried out.JBIG is very suitable to the compression of 1 BMP bitmap, and algorithm maturation is logical
With the JBIG interface that can call directly Windows XP offer completes JBIG coding, by described 1 BMP bitmap of red, black
1 BMP bitmap of color is respectively converted into red jbig file, black jbig file, and is respectively written into and applies establishing in step S2
Two jbig file buffer areas in, while discharging the two described 1 BMP bitmap caching areas.Then step S6 is executed.
In step s 6, data sending processing is carried out.Windows XP supports spool spool, by the red
Jbig file, black jbig file are respectively fed to spool, and Windows XP calls host computer PC driving to provide channel automatically and connects
Mouthful, slave computer is sent by two jbig files, the channel that host computer PC driving provides can be USB, Ethernet or UART
Equal wire channel, are also possible to the wireless channels such as WiFi or Bluetooth.Then step S7 is executed, slave computer is carried out and prints number
According to processing.
As shown in figure 3, on the basis of second embodiment, the third embodiment of the present invention carries out pixel determination processing
Step specifically includes:
A pixel is taken out from 24 BMP bitmaps reads current pixel using current pixel pointer as address
Tri- colouring component of RGB, each component occupy 1 byte, and range is 0~255.And empirically formula calculates or tables look-up and obtain pixel gray level
Value determines current pixel for red, black or white；
If current pixel is determined as red, the column locations of current pixel pointer direction are recorded, red grayscale value is write
The buffer area for entering to store red 8 BMP bitmaps corresponds in the byte of the pixel column column position, indicates that the pixel is red dot.
If current pixel is determined as black, the column locations of current pixel pointer direction are recorded, black grey scale value is write
The buffer area for entering to store 8 BMP bitmaps of black corresponds in the byte of the corresponding column locations of the pixel, indicates that the pixel is stain.
If current pixel is determined as white, the two described 8 BMP bitmap caching areas is kept to correspond to the pixel column column position
The byte set is 0, indicates that the pixel is white point.
It repeats the above steps, until completing to generate two complete 8 in 24 BMP bitmaps after the judgement of all pixels
Position BMP bitmap, i.e. 8 BMP bitmaps of red 8 BMP bitmaps and black.
As shown in figure 4, on the basis of 3rd embodiment, the fourth embodiment of the present invention carries out slave computer print data
The specific steps of processing include:
Step S7 carries out data receiver processing.Whether slave computer real-time detection host computer initiates print out task, when detecting
When host computer initiates print out task, red jbig file and black jbig file that host computer issues are received immediately, and deposit respectively
The red of printer is stored in receive in buffer area and black reception buffer area.Then step S8 is executed.
Step S8 carries out image decompression decoding process.Slave computer calls JBIG decoding interface, by the red JBIG text
Part and black jbig file are decompressed respectively, are reduced into 1 BMP bitmap of red 1 BMP bitmap and black, and store respectively
In the red toner cartridge buffer area and black toner cartridge buffer area of printer, while discharging the red reception buffer area and black
Receive buffer area.Then step S9 is executed.
Step S9 carries out file printout processing.Slave computer starts printing mechanism, and 1 BMP bitmap of the black is sent to
In black toner cartridge, the expression of bit 0 in 1 BMP bitmap of the black does not absorb black carbon powder, and bit 1 indicates to absorb black carbon
Powder.Red 1 BMP bitmap is sent in red toner cartridge simultaneously, the bit 0 in red 1 BMP bitmap indicates not
Red carbon powder is absorbed, bit 1 indicates to absorb red carbon powder.
When slave computer carries out pickup printing, the black toner cartridge printing black is first passed through, is beaten using the red toner cartridge
Print is red, is covered on red carbon powder on black carbon powder, to complete red, black double-colored printing.
One embodiment of the present invention has been described in detail above, but the content is only preferable implementation of the invention
Example, should not be considered as limiting the scope of the invention.It is all according to all the changes and improvements made by the present patent application range
Deng should still be within the scope of the patent of the present invention.
Claims (10)
1. a kind of print data processing method, which is characterized in that the method includes at least:
Native file format page to be printed is converted to euchroic mode bitmap by S1, host computer；
The newly-built two grayscale mode bitmap caching areas of S2, the host computer, two netrual colour mode bitmap buffer areas and two
Compressed encoding file cache area；
S3, the host computer determine the pixel column locations of the euchroic mode bitmap, and the euchroic mode bitmap is converted to
Transformation result is respectively written into two gray scale moulds by one red grayscale mode bitmap and a black gray mode bitmap
Formula bitmap caching area；
S4, the host computer carry out the red grayscale mode bitmap and the black gray mode bitmap at image optimization
Reason, is respectively converted into red netrual colour mode bitmap and black netrual colour mode bitmap, transformation result is respectively written into described
Two netrual colour mode bitmap buffer areas；
The red netrual colour mode bitmap and the black netrual colour mode bitmap are carried out compression of images by S5, the host computer
Processing, is respectively converted into red compressed encoding file and black compressed encoding file, and transformation result is respectively written into described two
A compressed encoding file cache area；
Two compressed encoding files are separately sent to slave computer by S6, the host computer, carry out slave computer print data
Processing.
2. print data processing method according to claim 1, which is characterized in that the euchroic mode bitmap is 24
BMP bitmap, the grayscale mode bitmap are 8 BMP bitmaps, and the netrual colour mode bitmap is 1 BMP bitmap, the compression
Coding file is jbig file.
3. print data processing method according to claim 2, which is characterized in that in step s 2, described two 8
BMP bitmap caching area respectively indicates the red page and the black page, and two 8 BMP bitmap caching areas difference is initial
0 is turned to, the red page is indicated and the black page is respectively white point.
4. print data processing method according to claim 2, which is characterized in that in step s 2, described two 1
BMP bitmap caching area respectively indicates red dot matrix and black dot matrix, and two 1 BMP bitmap caching areas difference is initial
0 is turned to, red dot matrix is indicated and black dot matrix is respectively white point.
5. print data processing method according to claim 2, which is characterized in that in step s 2, described two
Jbig file buffer area is initialized as 0 respectively, indicates that jbig file not yet fills data.
6. print data processing method according to claim 2, which is characterized in that in step s3, determine described 24
When the pixel column locations of BMP bitmap, since first pixel of first trip, pixel pointer is moved from left to right, from up to down, until
Until footline terminal column pixel, each pixel for being successively read in 24 BMP bitmaps；
The step of reading each pixel in 24 BMP bitmaps include:
Using current pixel pointer as address, tri- colouring component of RGB of current pixel is read, each component occupies 1 byte, range 0
~255；
Pixel gray level value is obtained, determines current pixel for red, black or white；
If current pixel is determined as red, the column locations of current pixel pointer direction are recorded, the write-in of red grayscale value is deposited
The buffer area for storing up red 8 BMP bitmaps corresponds in the byte of the pixel column column position, indicates that the pixel is red dot；
If current pixel is determined as black, the column locations of current pixel pointer direction are recorded, the write-in of black grey scale value is deposited
The buffer area of storage 8 BMP bitmaps of black corresponds in the byte of the corresponding column locations of the pixel, indicates that the pixel is stain；
If current pixel is determined as white, the two described 8 BMP bitmap caching areas is kept to correspond to the pixel column column position
Byte indicates that the pixel is white point.
7. print data processing method according to claim 2, which is characterized in that the slave computer print data processing step
Suddenly include:
S7, the slave computer receive the red jbig file and the black jbig file that the host computer is sent；
The red jbig file and black jbig file are carried out image decoding processing by S8, the slave computer, are restored respectively
At 1 BMP bitmap of red 1 BMP bitmap and black；
S9, the slave computer start printing mechanism, print 1 BMP bitmap of red 1 BMP bitmap and the black respectively.
8. print data processing method according to claim 7, which is characterized in that newly-built two receptions of the slave computer are slow
Area is deposited, for distinguishing the received red jbig file and the black jbig file in storing step S7；The slave computer
Two toner cartridge buffer areas are created, treated for distinguishing image decoding in storing step S8 red 1 BMP bitmap and institute
State 1 BMP bitmap of black.
9. print data processing method according to claim 7, which is characterized in that print 1 BMP bitmap of the black and
The step of red 1 BMP bitmap respectively include:
1 BMP bitmap of the black is sent in black toner cartridge, the expression of bit 0 in 1 BMP bitmap of the black is not inhaled
Black carbon powder is received, bit 1 indicates to absorb black carbon powder；
Red 1 BMP bitmap is sent in red toner cartridge, the expression of bit 0 in red 1 BMP bitmap is not inhaled
Red carbon powder is received, bit 1 indicates to absorb red carbon powder.
10. print data processing method according to claim 9, which is characterized in that when the slave computer is printed, first
Black is printed by the black toner cartridge, it is red using the red toner cartridge printing, so that red carbon powder is covered on black carbon powder
On.
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| CN106600562A (en) * | 2016-12-22 | 2017-04-26 | 李琳 | Image file processing apparatus |
| CN108873647A (en) * | 2018-06-08 | 2018-11-23 | 天津光电通信技术有限公司 | A kind of double-colored double-sided laser print control program |
| CN108646530A (en) * | 2018-06-08 | 2018-10-12 | 天津光电通信技术有限公司 | A kind of double-colored double-sided laser print control system |
| CN110164399B (en) * | 2019-07-01 | 2020-11-24 | 深圳市卡迪智能科技有限公司 | 8-bit depth type matrix storage optimization method |
| CN112102455B (en) * | 2020-08-18 | 2024-02-02 | 绍兴聚量数据技术有限公司 | Method for converting PRT file of 3D printer into RGB color model |
| CN112130780A (en) * | 2020-09-21 | 2020-12-25 | 北京辰光融信技术有限公司 | Two-color printing method, device, equipment and computer readable storage medium |
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