JP2000112688A - Image formation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system capable of making the job to form an image by automatically and selectively using both of a color image forming device and a black-and-white image forming device when the job including a color page and a black-and white page is made to form the image. SOLUTION: When the job including the color page and the black-and-white page is outputted from a computer 103, the contents of the job is transmitted to the color image forming device 104 and the black-and-white image forming device 105 respectively by this system. And PDL(page description language) data are developed by the color image forming device 104, the job is discriminated whether it is of the color page or not based on the data after development, the image formation of only the color page is performed and a judgment result is simultaneously transmitted to the black-and-white image forming device 105 by the color image forming device 104. When the job is of the black-and- white page, the image formation of it is performed by the black-and-white image forming device 105.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming system in which a color image forming apparatus and a black and white image forming apparatus are connected to a network.

[0002]

2. Description of the Related Art Conventionally, in a system in which a color printer or a black-and-white printer is connected to a network, when a user of a client computer performs network printing, the user uses a plurality of printers including a color printer and a monochrome printer on the computer. It is known to select one of them for printing.

[0003]

However, despite the fact that color / black and white originals are mixed in one job, printing can only be performed by either a color printer or a black and white printer. A color printer can print in full color, but a black and white printer is superior in terms of speed, cost, and the like. Therefore,
It is desirable to print a page containing only black and white images on a black and white printer, but in the conventional system, the user determines whether to print each page on a color printer or a black and white printer, and then the user specifies page printing for each page In this case, the user has to work to select a printer each time, which is troublesome. In addition, the user also has to perform the operation of rearranging the sheets printed by the color printer and the black-and-white printer in the page order, which is a tedious operation.

[0004] Particularly when a large amount of printing is performed,
Although the processing time and cost appear remarkably, the time required for the manual operation of the user becomes considerable, and it is desired to save labor in this respect.

[0005]

SUMMARY OF THE INVENTION In view of the above problems, the present invention relates to an image forming apparatus system comprising a color image forming apparatus and a black and white image forming apparatus connected to a network. Expanding means for expanding the code data of a job in which color pages and black-and-white pages output from the same are mixed into image data,
Determining means for determining whether each page is a color page or a black-and-white page based on the image data expanded by the expanding means; and causing the color image forming apparatus to form an image on the color page in accordance with the determination result of the determining means. And a control unit for forming a black-and-white page by the black-and-white image forming apparatus.

According to the present invention, in a control method in an image forming system in which a color image forming apparatus and a monochrome image forming apparatus are connected to a network, code data of a job in which color pages and monochrome pages are mixed is developed into image data. Determining whether each of the pages is a color page or a black and white page based on the developed image data, and causing the color image forming apparatus to form an image with the color image forming apparatus according to the determination result. The present invention provides a control method in an image forming system, comprising the step of forming an image by the monochrome image forming apparatus.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS [Overview of System] FIG.
1 shows an overview of a system according to an embodiment of the present invention. The computer 102 connected to the network 101 is a server, and the computers 103a and 103b are clients. Although not shown, many clients are connected in addition to these. Hereinafter, the client is represented as 103.

Further, the network 101 has an MFP (Multi Fu
nction Peripheral: multifunction peripherals) 104 and 105 are connected. Reference numeral 104 denotes a color MFP that can scan and print in full color, and 105 denotes a monochrome MFP that performs scanning and printing in monochrome. Although not shown, the network 101 includes MFPs other than the above, a scanner, a printer, or a fax.
Other devices are also connected.

Here, on the computer 103, a so-called D
By running application software that executes TP (Desk Top Publishing: desktop publishing), various documents / graphics are created / edited. The computer 103 converts the created document / graphic into a PDL language (Page Descri
ption Language: page description language), sent to the MFPs 104 and 105 via the network 101, and printed out.

The MFPs 104 and 105 are respectively
It has communication means capable of exchanging information with the MFPs 2 and 103 via the network 101, and has a mechanism for sequentially informing the computers 102 and 103 of the information and status of the MFPs 104 and 105. Further, the computers 102 and 103 have utility software that operates by receiving the information, and the MFPs 104 and 1
05 can be managed by the computers 102 and 103.

[Configuration of MFPs 104 and 105] Next, FIGS.
The configuration of the MFPs 104 and 105 will be described with reference to FIG. However, MF
The difference between P104 and MFP105 is the difference between full color and monochrome,
Since a full-color device often includes the configuration of a monochrome device in a portion other than the color processing, the description will be limited to the full-color device, and the description of the monochrome device will be added as needed.

The MFPs 104 and 105 include a scanner unit 201 for reading an image, an IP unit 202 for performing image processing on the image data, a facsimile unit 203 for transmitting and receiving an image using a telephone line such as a facsimile, and a network. NIC (Network Int) that exchanges image data and device information using
An interface card (network interface card) portion 204 and a PDL portion 205 for developing a page description language (PDL) sent from the computer 103 into an image signal. The image signal is temporarily stored in the core unit 206 or the route is determined according to the usage of the MFPs 104 and 105.

Next, the image data output from the core unit 206 is sent to a printer unit 208 for forming an image. The sheet printed out by the printer unit 208 is sent to the finisher unit 209, where sheet sorting processing and sheet finishing processing are performed.

The display unit 210 is used to check the contents of the image without printing the image, and to check the state of the image before printing (preview).

[Configuration of Scanner Unit 201] The configuration of the scanner unit 201 will be described with reference to FIG. Reference numeral 301 denotes a platen glass on which a document 302 to be read is placed. The original 302 is illuminated by an illumination lamp 303, and the reflected light is
After passing through 305 and 306, an image is formed on the CCD 308 by the lens 307. The first mirror unit 310 including the mirror 304 and the illumination lamp 303 moves at a speed v, and the second mirror unit 311 including the mirrors 305 and 306 moves at a speed of 1 / 2v, so that the original 3
Scan the entire surface of 02. The first mirror unit 310 and the second mirror unit 311 are driven by a motor 309.

[Configuration of Image Processing Unit 202] The IP unit (image processing unit) 202 will be described with reference to FIG. The input optical signal is converted into an electric signal by the CCD sensor 308.
This CCD sensor 308 is a color sensor of RGB3 lines,
The image signals are input to the A / D conversion unit 401 as RGB image signals. After adjusting the gain and offset here, A /
8 bit digital image signal R for each color signal by D converter
Converted to 0, G0, B0. After that, a known shading correction using a read signal of the reference white plate is performed for each color in the shading correction of 402. Furthermore, CCD sensor 3
Since the color line sensors 08 are arranged at a predetermined distance from each other, the line delay adjustment circuit (line interpolation unit) 403 corrects a spatial shift in the sub-scanning direction.

Next, the input masking section 404 is a CCD sensor
The reading color space determined by the spectral characteristics of the 308 R, G, B filters
This part converts to the NTSC standard color space.
Performs a 3 × 3 matrix operation using device-specific constants taking into account various characteristics such as the sensitivity characteristics of illumination / spectral characteristics of illumination lamps, and converts the input (R0, G0, B0) signals to standard (R, G,
B) Convert to a signal.

Further, a luminance / density conversion unit (LOG conversion unit) 405
Is configured by a look-up table (LUT) RAM,
RGB luminance signals are converted so as to become C1, M1, and Y1 density signals.

Reference numeral 406 denotes an output masking / UCR circuit unit.
1, C1, Y1 signals are converted into Y, M, C, K signals, which are the toner colors of the image forming apparatus, using a matrix operation.
C1, M1, Y1, K based on RGB signals read by sensor 308
One signal is corrected to C, M, Y, K signals based on the spectral distribution characteristics of the toner and output.

Next, the data is converted into C, M, Y, and K data for image output by a gamma correction unit 407 using a look-up table (LUT) RAM in consideration of various color characteristics of the toner.
After being subjected to sharpness or smoothing in the spatial filter 408, the image signal is sent to the core unit 206.

When monochrome image processing is performed by the MFP 105, a single-color A / D conversion is performed using a single-color one-line CCD sensor.
After performing conversion and shading, processing may be performed in the order of input / output masking, gamma conversion, and spatial filter.

[Configuration of FAX Unit 203] Referring to FIG.
Will be described. First, at the time of reception, the data coming from the telephone line is received by the NCU unit 501, the voltage is converted, the demodulation unit 504 in the modem unit 502 performs A / D conversion and demodulation operation, and the decompression unit 506 performs raster conversion. Expand to data. Generally fax
The run-length method or the like is used for compression and expansion. The image converted to raster data is temporarily stored in the memory unit 507, and after confirming that there is no transfer error in the image data,
It is sent to the core unit 206.

Next, at the time of transmission, a compression unit 505 performs compression such as a run-length method on the image signal of the raster image coming from the core unit,
After performing D / A conversion and modulation operations in 03, the data is sent to the telephone line via the NCU unit 501.

[Configuration of NIC Unit 204] Referring to FIG.
Will be described. The NIC section 204 has an interface function with respect to the network 101.For example, the NIC section 204 obtains information from the outside using an Ethernet cable such as 10Base-T / 100Base-TX, or obtains information to the outside. Play the role of flowing.

When information is obtained from outside, the voltage is first converted by the transformer unit 601 and sent to the LAN controller unit 602. The LAN controller unit 602 has a first
It has a buffer memory (not shown), determines whether the information is necessary information, sends it to a second buffer memory (not shown), and then sends a signal to the PDL unit 205.

Next, when providing information to the outside, the PD
The data sent from the L unit 205 is sent to the LAN controller unit 6
At 02, necessary information is added, and connected to the network 101 via the transformer unit 601.

[Configuration of PDL Unit 205] Next, referring to FIG.
The PDL unit 205 will be described. Image data created by application software running on the computer 103 is composed of documents, figures, photos, etc.
Each of them is made up of a combination of elements of image description such as a character code, a graphic code, and raster image data. This is the so-called PDL (Page Description
Language: Page description language) and Adobe's PostScr
This is represented by the ipt (registered trademark) language.

The PDL unit 205 performs a conversion process from the PDL data to raster image data. First, the PDL data sent from the NIC unit 204 is once stored in a large-capacity memory 604 such as a hard disk (HDD) via the CPU unit 603, where it is managed and stored for each job. Next, if necessary, the CPU 603 executes RIP (Raster Image Processing).
) To perform rasterized image processing to develop the PDL data into a raster image. The expanded raster image data is stored in a page unit for each job in a high-speed accessible memory 605 such as a DRAM for each color component of CMYK, and again according to the status of the printer unit 208, via the CPU unit 603, It is sent to the core unit 206.

[Configuration of Core Unit 206] Referring to FIG.
06 will be described. Bus selector section 701 of core section 206
Has the role of traffic control in the use of MFPs 104 and 105. That is, the MFPs 104, 1 such as a copy function, a network scan, a network print, facsimile transmission / reception, and display display.
The bus is to be switched according to various functions in 05.

The following is a pattern of switching paths for executing each function.・ Copy function: Scanner 201 → Core 206 → Printer 208 ・ Network scan: Scanner 201 → Core 206 → NI
C unit 204 ・ Network print: NIC unit 204 → core 206 → printer 208 ・ Facsimile transmission function: scanner 201 → core 206 → FA
X section 203-Facsimile reception function: FAX section 203 → core 206 → printer 208 ・ Display display function: scanner 201 or FAX section 203 or NIC section 204 → core 206 → display 210

Next, the image data output from the bus selector unit 701 is transmitted to the printer unit 208 (PWM unit 207) via a compression unit 702, a memory unit 703 including a large-capacity memory such as a hard disk (HDD), and a decompression unit 704. ) Or to the display unit 210. The compression method used in the compression unit 702 is JPEG, JBIG, ZIP
Such a general one may be used. The compressed image data is managed for each job, and is stored together with additional data such as a file name, a creator, a creation date and time, and a file size.

Further, if a job number and a password are provided and stored together, the personal box function can be supported. This is a function for temporarily saving data and making printout (reading from the HDD) available only to a specific person. When an instruction to print out the stored job is issued, the job is authenticated by a password and then called from the memory unit 703, the image is expanded, the image is returned to a raster image, and sent to the printer unit 207.

[Configuration of PWM Unit 207] The PWM unit 207 will be described with reference to FIG. Yellow (Y), magenta exiting core section 206
(M), cyan (C), and black (K) color-separated image data (single color in the case of MFP 105)
An image is formed through each of the units 207. Reference numeral 801 denotes a triangular wave generator, and 802, a D / A converter (D / A converter) for converting an input digital image signal into an analog signal. The signal from the triangular wave generator 801 (a in FIG. 8B) and the signal from the D / A converter 802 (b in FIG.
The signals are compared in size, and the signals are sent to the laser driving unit 804 as signals as shown in FIG. 8 (2). The CMYKs are converted into laser beams by the CMYK lasers 805.

Then, each laser beam is scanned by the polygon scanner 913, and each photosensitive drum 91 is scanned.
Irradiated at 7,921,925,929.

[Configuration of Printer Unit 208 (for Color MFP 104)] FIG. 9 is a schematic view of the color printer unit. 913
Is a polygon mirror, which receives four laser beams emitted from four semiconductor lasers 805. One of them scans the photosensitive drum 917 through mirrors 914, 915, 916, and
One scans the photosensitive drum 921 through mirrors 918, 919, and 920, and the other scans the photosensitive drum 92 through mirrors 922, 923, and 924.
5 is scanned, and the next one scans the photosensitive drum 929 via mirrors 926, 927, and 928.

On the other hand, reference numeral 930 denotes a developing unit for supplying yellow (Y) toner, which forms a yellow toner image on the photosensitive drum 917 in accordance with the laser beam, and 931 denotes a developing unit for supplying magenta (M) toner. According to the laser beam, a magenta toner image is formed on the photosensitive drum 921, and 932 is a developing device for supplying cyan (C) toner. According to the laser beam, a cyan toner image is formed on the photosensitive drum 925. Form 9
A developing unit 33 supplies black (K) toner, and forms a magenta toner image on the photosensitive drum 929 according to the laser beam. The toner images of the four colors (Y, M, C, K) are transferred onto the sheet, and a full-color output image can be obtained.

The sheet fed from one of the sheet cassettes 934 and 935 and the manual feed tray 936 is adsorbed onto the transfer belt 938 via a registration roller 937 and is conveyed. Synchronous with the paper feed timing, the toner of each color is developed in advance on the photosensitive drums 917, 921, 925, and 929, and the toner is transferred to the sheet as the sheet is conveyed. The sheet to which each color toner is transferred is separated,
The sheet is conveyed by the conveyance belt 939, and the toner is fixed on the sheet by the fixing device 940. The sheet that has passed through the fixing device 940 is once guided downward by the flapper 950, and after the rear end of the sheet has passed through the flapper 950, the sheet is switched back and discharged. As a result, the sheets are discharged in a face-down state, and the correct page order is obtained when printing is performed in order from the first page.

The four photosensitive drums 917, 921, 925, 92
9 are arranged at regular intervals with a distance d, and the sheet is being conveyed at a constant speed v by the conveying belt 939;
With this timing synchronization, four semiconductor lasers 805
Is driven.

[Configuration of Printer Unit 208 (for Monochrome MFP 105)] FIG. 10 is a schematic view of the monochrome printer unit. 1
Reference numeral 013 denotes a polygon mirror, and four semiconductor lasers 805
Receives the emitted laser light. The laser beam scans the photosensitive drum 1017 through mirrors 1014, 1015, and 1016.
On the other hand, reference numeral 1030 denotes a developing device for supplying a black toner, which forms a toner image on the photosensitive drum 1017 according to the laser beam, and the toner image is transferred to a sheet to obtain an output image.

A sheet fed from one of the sheet cassettes 1034 and 1035 and the manual feed tray 1036 is adsorbed onto a transfer belt 1038 via a registration roller 1037 and is conveyed. Synchronized with the paper feed timing, the toner is developed on the photosensitive drum 1017 in advance, and the toner is transferred to the sheet as the sheet is transported. The sheet to which the toner has been transferred is separated, and the toner is fixed to the sheet by the fixing device 1040. The sheet that has passed through the fixing device 1040 is once guided downward by the flapper 1050, and after the rear end of the sheet has passed through the flapper 1050, the sheet is switched back and discharged. As a result, the sheets are discharged in a face-down state, and the correct page order is obtained when printing is performed in order from the first page.

[Configuration of Display Unit 210] FIG. 11 shows the display unit 210. Since the image data output from the core unit 206 is CMYK data, the RGB data is output by the inverse LOG conversion unit 1101.
Need to convert to data. Next, in order to match the color characteristics of the display devices 1104 and 105 such as a CRT to be output, the gamma conversion unit 1102 performs output conversion using a look-up table. The converted image data is stored once in the memory unit 1103 and is displayed on a display device 110 such as a CRT.
Displayed by 4,105.

Here, the display unit 210 is used for a preview function for confirming an output image in advance, a proof function for verifying whether an output image is correct or not, or an image that does not need to be printed. This is to avoid waste of the print sheet when checking.

[Structure of Finisher Unit 209] FIG. 12 is a schematic view of the finisher unit. Fixing unit 9 of printer unit 208
When the sheet exits 40 (or 1040), the finisher 209
to go into. The finisher 209 has a sample tray 1201
And a stack tray 1202, which is switched and discharged according to the type of job and the number of sheets to be discharged.

There are two types of sorting methods, a bin sorting method in which a plurality of bins are assigned to each bin, and an electronic sorting function to be described later and bins (or trays) are shifted in a forward direction and output for each job. Sorting can be performed by a shift sort method for sorting sheets. The electronic sort function is called collate, and if you have the large-capacity memory described in the core section above, you can use this buffer memory to change the order of buffered pages and the order of ejection. By using it, the function of electronic sorting can be supported. Next, the group function
This is a function that sorts pages by page, while sorting sorts jobs by job.

Further, when the sheets are discharged to the stack tray 1202, the sheets before the sheets are discharged can be stored for each job, and the sheets can be bound by the stapler 1205 immediately before the sheets are discharged.

In addition to the above two trays, there are a Z-folding machine 1204 for folding paper in a Z-shape and a puncher 1206 for making two (or three) holes for files. Each process is performed according to the type.

Further, the saddle stitcher 1207 binds the central portion of the sheet at two places, and then folds the sheet in half by biting the central portion of the sheet with a roller to create a booklet such as a weekly magazine or pamphlet. Perform processing. Sheets bound with Saddle Stitcher 1207
It is discharged to the booklet tray 1208.

In addition, although not shown in the figure, it is also possible to add a binding by glue (glue) for bookbinding, or a cutting after the binding to align the end face opposite to the binding side.

Also, the inserter 1203 allows the sheets set on the tray 1210 to pass through the trays 1201 and 1201 without passing through the printer.
2, 1208. As a result, a sheet set in the inserter 1203 can be inserted (inserted) between sheets fed to the finisher 209. Inserter 1203 tray
The sheet 1210 is set by the user in a face-up state, and is fed by the pickup roller 1211 in order from the uppermost sheet. Therefore, the sheet from the inserter 1203 is conveyed to the trays 1201 and 1202 as they are, and is discharged in a face-down state. When sending to the saddle stitcher 1207, the face is adjusted once by sending it to the puncher 1206 side and then sending it back by switching back.

[Job Division] Next, job division of a color image and a monochrome image will be described. Computer 103, 1
When printing a job in which color pages and black-and-white pages are mixed in one job from 02, the job is first sent to the color MFP 104 using a driver which is software operating on the computers 102 and 103 as shown in FIG. Forward.
Here, reference numeral 1301 denotes a driver window displayed on the screens of the computers 102 and 103. As setting items in the driver window, 1302 denotes a color printer selection column for selecting a color printer (color MFP 104), and 1303 denotes a black and white printer (black and white). Black and white printer selection column for selecting MFP 105), 1304
Is a page setting column to select the output page from the job, 1305 is a copy setting column to specify the number of copies, 1306 is a job color mode column to instruct color / black and white image division for color / monochrome mixed jobs, and 1307 is OK key to start printing, 1308 is a cancel key to cancel printing, 13
09 is a property key for performing further detailed settings.

Here, the job color mode column 1306
Can select one mode from automatic division, manual division, all page color, all page black and white,
In the case of manual division, the user can select which MFP to output for each page.

[Automatic Job Division and Color / Monochrome Judgment]
Next, automatic job division will be described with reference to FIG.
When an OK key 1307 is pressed in the driver window 1301, the driver on the computer 103 transmits information indicating that the job is a mixture of color pages and monochrome pages and a print job via the computer (server) 102 via the color MFP 104. And send it to the black and white MFP105. In the case of automatic division, since it is not possible to determine which page is a black and white page at this point, the job contents of all pages are colored.
Send to MFP 104 and monochrome MFP 105, respectively. The order of sending the color page and the black and white page may be shifted in time in the order of the color MFP and the black and white MFP, or may be sent to the two MFPs at the same time.

When the monochrome MFP receives the information indicating that the job includes both color pages and monochrome pages, it does not immediately start printing, but waits for a color page set described later.

Then, the job is automatically divided (Auto Separa
) (step 1401), the setting content of the sampling period is sent to the color MFP 104 (step 14).
02). However, the setting of the sampling period is a property key
This is performed in advance in a window for detailed settings displayed by 1309. Regarding the sampling period, if sampling is performed at a rate of 1 point per 100 pixels x 100 lines, the sampling time is only 1 / 10,000. For 400 dpi images, if sampling is performed in grid units of 0.25 inch (= 6.35 mm) period, the letter If a sheet of size (11 "x 8.5") is near 1500 points, it can be determined to some extent whether it is color or black and white. If the image is still difficult to judge, set the sampling period more finely or manually divide the job color mode column 1306 (Manual Separati
on) and manually set in advance in the detailed setting window whether each page is color or black and white.

Next, the PDL unit 205 of the color MFP 104 that has received the job and the sampling cycle sequentially rasterizes and expands the pages in the job from the first page (RIP).
Subsequent images are stored in semiconductor memory in page units and color components (CMYK)
605 is stored. The stored image is subjected to color / monochrome determination by the CPU 603 (step 1403). The determination is made based on whether or not each sample point in the semiconductor memory 605 has a component (CMY component) other than black (K) (step 14).
04, 1405). At this time, in order to increase the speed, even one of the sampling points in the page
If there is a (CMY) component, the page is a color image, so at that point the color / black and white determination on the page is stopped, and the page is set as a color MFP
Processed internally. At this time, since reprinting of this job is considered, the page number information of the page is notified to the server 102 via the network 101 together with information indicating that the page is a color page (step 1409). Then, the page is color-printed by the color MFP 104 (step 1410).

In step 1405, if no color (CMY) component exists at any one of the sampling points in the page, the page is regarded as a monochrome page and the monochrome MF
To perform the P105 processing, the page number information of the page is added to the network
Is notified to the server 102 and the monochrome MFP 105 via the server (step 1411).

The monochrome MFP 105 that has received the notification of step 1411
Waits for the start of printing until the color page printed by the color MFP 104 is set in the inserter 1203 of the finisher 209.

Steps 1403 to 1406 and 1409 to 1412 are repeated until the last page unless a job cancel interrupt is input (step 1413), and the job in the MFP 104 is completed.

If automatic division has not been set in step 1401, that is, if manual division has been set,
The computer (server) 102 receives information on whether each page is color or black and white from the driver, and instructs the color MFP 104 to print the color page and the black and white MFP 105 prints the black and white page accordingly (step 1407). ). Then, the color MFP 104 starts color printing of a color page, and the monochrome MFP 105 waits for the start of printing until the color page printed by the color MFP 104 is set in the inserter 1203 of the finisher 209.

In the above description, rasterization is performed sequentially for each page.
(HDD) 604 may be subjected to RIP development, and determination processing may be performed by sequentially reading out each page or a plurality of pages from the semiconductor memory 605.

In this manner, a job in which color pages and black-and-white pages are mixed, and a color page is a color MFP 104
And a monochrome page can be printed by the monochrome MFP 105.

[Automatic Mixing of Jobs] Next, the operation of combining jobs output separately for color / black and white will be described. This operation is called mixing. Since the color / black and white determination has already been performed in the color MFP 104, the monochrome MFP 105 does not need to perform the determination again. For this reason, the monochrome MFP 105 outputs only the page of the page number notified in step 1411 of FIG.
P Expand and print.

At this time, as shown in FIG. 15, the user selects a bundle 1501 of color pages printed by the color MFP 104.
Is set in the inserter 1003 attached to the monochrome MFP 105. At this time, the bundle 1501 of color pages set in the inserter 1003 corresponds to the page number notified in step 1409 of FIG.

FIG. 16 is a flowchart of the automatic mixing process in the monochrome MFP 105. First, the process waits until a bundle of color pages is set in the inserter 1203 (step 160).
1). If a bundle of color pages has been set, it is determined in order from the first page whether or not the pages are monochrome pages notified in step 1411 (step 1604).
RIP development processing (step 1605) and black-and-white page printing processing (step 1606) are performed, and the black-and-white pages are discharged to the tray face-down. If it is determined in step 1604 that the page is not a monochrome page, that is, if the page is a color page, one sheet is fed from the top of the bundle 1501 of color pages on the inserter 1003 (step 1603) and discharged face-down to the tray. . This process is performed for each page up to the last page (step 1607). By performing this processing until the end of the job, the job bundle 15
03 is a mixture of color pages and black and white pages.

[Description of Network Utility Software] Utility software that operates on the computers 103 and 102 will be described. Network interface part in MFP 104, 105 (NIC part 204 + PDL part
205), a standardized database called MIB (Management Information Base) is built, and SN
It communicates with computers on a network via a network management protocol called MP (Simple Network Management Protocol), and can manage MFPs 104 and 105, as well as scanners, printers, and fax machines connected on the network.

On the other hand, a software program called a utility is running on the computers 103 and 102, and the MIB is used via the network by using the SNMP.
Necessary information can be exchanged using.

For example, it is detected whether or not the finisher 209 is connected as equipment information of the MFPs 104 and 105, whether or not printing is currently possible as status information, or the names and installation of the MFPs 104 and 105. For example, to fill in, change, or confirm the location, etc.
By using, the user can connect to the MF connected to the network.
The information of P104 and P105 can be confirmed on the computers 103 and 102. In addition, such information can be used to limit the read / write by distinguishing the server 102 and the client 103.

Therefore, by using this function, the MFP 1
04,105 equipment information, device status, network settings,
The user can obtain all kinds of information such as the history of the job and the management and control of the usage status in front of the computers 103 and 102.

[Description of GUI] Next, a GUI (Graphic User
Interface) screen of utility software that runs on computers 103 and 102
I will explain using. When the utility software is started on the computers 103 and 102, a screen as shown in FIG. 17 is displayed. Here, 1701 is a window, and 1720 is a cursor. Clicking with the mouse opens another window or transits to the next state.

Reference numeral 1702 denotes a title bar, which is used to display the current window hierarchy and title. 17
Each of 03 to 1707 is called a tab, and is arranged for each classification, so that necessary information can be viewed and necessary information can be selected.

Here, the device tab 1703 is called a device tab, and the user can know the existence of the device and its outline. On the device tab, there are bitmap images indicating MFPs 104 and 105 such as 1708 and 1709, and messages 1710 and 1711 indicate what state these MFPs are. The details of the device status can be understood by looking at the status tab 1704. Next, a queue tab 1705 allows the user to know the status of jobs queued in each apparatus and the degree of device congestion.

Next, the configuration tab 1706 allows the user to know equipment information such as what type of finisher having a function is mounted. For example, the MFP 105 is equipped with a finisher, and the functions of the finisher include a stapler, saddle stitcher, folding machine, punch machine, inserter, and a letter size paper deck that can hold up to 5,000 sheets. Or the amount of remaining sheets, or a unit for performing double-sided processing is mounted.

The setup tab 1707 allows the user to know the network setting information of the device.

[Creation of a Number of Copies] When generating an output of a plurality of copies by the above method, all the color pages after the RIP development are held in the large-capacity memory 604. When pages 1, 3, 5, 7, and 8 are color pages during a job and three copies are to be created, the PDL unit 205 sends the printer to the printer unit 208 of the color MFP 104 to send 1, 3, 5, 7, 8, 8, 1,3,
Signals are sent in the order of 5, 7, 8, 1, 3, 5, 7, 8 and a bundle 1501 of color prints is created in this order. Then, the user sets this bundle in the inserter 1203.

Next, when printing with the monochrome MFP 105,
2,4,6,9,10 pages are RIP-developed, and similarly, the development data of this page is held in the large-capacity memory 604 of the monochrome MFP 105, and 2,4,6,9,10,2,4 , 6,9,10,2,4,6,9,10 are developed and printed in this order, and the sheets are fed one by one from the bundle 1501 set in the inserter 1203 at the timing of the color page. Three sets of ~ 10 pages are completed.
By outputting in this order, the finisher 209 can perform a binding process such as the stapler 1005 or the saddle stitch 1007 on each set.

In the above embodiment, the color / black and white pages are determined in the color MFP 104, and the pages are mixed using the inserter connected to the monochrome MFP 105.
These may be reversed. That is, the same result can be obtained in a configuration in which color / monochrome page determination is performed in the monochrome MFP 105 and page mixing is performed using an inserter connected to the color MFP 104.

[Alternative Embodiment] In the above embodiment, the monochrome MFP 105
Alternatively, the configuration in which mixing is performed by a finisher connected to the color MFP 104 has been described, but the color MFP 1 is configured by a finisher not connected to any of the MFPs.
04. If the sheet bundle printed by the monochrome MFP 105 is mixed, the color MFP 104 and the monochrome MFP 105 can be operated at the same time, so that the time required for the job to occupy the MFP can be shortened.

As shown in FIG. 18, a computer 1801 for controlling the finishers 1807 and 1808 is connected to the network 101. When the server computer 102 receives a job in which color pages and black and white pages are mixed from the client computer 103, the MFP 104 and the MF
Send the job to P105. Then, the MFP 104 prints the color page and sends the page number information of the color page to the computer 1801. Also, the MFP 105 prints a black and white page and sends page number information of the black and white page to the computer 1801. Based on this information, the computer 1801 determines which MFP sets the printed sheet in each of the finishers 1807 and 1808, and displays it on the screen. Then, the user sets the output print in the inserter of each finisher according to the screen. FIG. 18 illustrates a state in which the computer 1801 copies the sheet output from the color MFP 104 to the finisher 1807.
This shows a state where it is determined that the sheet output from the monochrome MFP 105 is set in the inserter 1810 of the finisher 1808. Computer 1801
The paper is fed from each inserter at a timing based on the information of whether the page is a color page or a monochrome page received from each MFP. As a result, the stacker
In 1806, the mixed sheet 1805 is discharged.

Further, if a plurality of inserters are prepared and the computer 1801 instructs which job in the stacker 1811 is to be set to which inserter, the expandability is further expanded.

[0080]

As described above, according to the present invention,
The code data of the job in which color pages and black-and-white pages are mixed is developed into image data, and it is determined whether each page is a color page or a black-and-white page based on the developed image data. Since an image is formed by an image forming apparatus and a black and white page is formed by a black and white image forming apparatus, a color image forming apparatus is used for forming a job including a color page and a black and white page. Thus, an image can be formed on a monochrome page by a monochrome image forming apparatus. Therefore, the good aspects of each of the color image forming apparatus and the black and white image forming apparatus can be utilized with a simple operation, and it is possible to contribute to an improvement in productivity when forming a job including a color page and a black and white page.

[Brief description of the drawings]

FIG. 1 is a diagram showing an entire system according to an embodiment of the present invention.

FIG. 2 is a block diagram of the entire image forming apparatus.

FIG. 3 is a diagram illustrating a scanner unit of the image forming apparatus.

FIG. 4 is a block diagram of an IP unit of the image forming apparatus.

FIG. 5 is a block diagram of a facsimile unit of the image forming apparatus.

FIG. 6 is a block diagram of a NIC / PDL unit of the image forming apparatus.

FIG. 7 is a block diagram of a core unit of the image forming apparatus.

FIG. 8 is a block diagram of a PWM unit of the image forming apparatus.

FIG. 9 is a diagram illustrating a printer unit of the color image forming apparatus.

FIG. 10 is a diagram illustrating a printer unit of the monochrome image forming apparatus.

FIG. 11 is a block diagram of a display unit of the image forming apparatus.

FIG. 12 is a diagram illustrating a finisher unit of the image forming apparatus.

FIG. 13 illustrates an example of a screen of a printer driver.

FIG. 14 is a flowchart of color / monochrome page division.

FIG. 15 is a conceptual diagram for mixing color / monochrome pages.

FIG. 16 is a flowchart of mixing color / monochrome pages.

FIG. 17 illustrates an example of a screen of utility software.

FIG. 18 is a diagram showing another type of system.

[Explanation of symbols]

 101 Network 102 Server Computer 103 Client Computer 104 Color MFP 105 Monochrome MFP 209 Finisher

Claims (7)

[Claims] 1. An image forming apparatus system comprising a color image forming apparatus and a black-and-white image forming apparatus connected to a network, wherein a job in which color pages and black-and-white pages output from a computer connected to the network are mixed. Expanding means for expanding the code data into image data, determining means for determining whether each page is a color page or a monochrome page based on the image data expanded by the expanding means, and according to the determination result of the determining means, An image forming system, comprising: control means for forming an image on a color page by the color image forming apparatus and forming an image on a black and white page by the black and white image forming apparatus. 2. The developing means raster-develops page description language data sent from a computer for each color.
2. The image forming system according to claim 1, wherein the determination unit determines whether the image is a color image or a monochrome image based on raster data. 3. The rasterizing means raster-develops page description language data sent from a computer, and the determining means determines one or more points of the raster data by sampling. The image forming system as described in the above. 4. The apparatus according to claim 3, wherein the number of sampling points in said determining means can be set arbitrarily.
The image forming system as described in the above. 5. A control method in an image forming system in which a color image forming apparatus and a black and white image forming apparatus are connected to a network, wherein code data of a job in which color pages and black and white pages are mixed is developed into image data. Determining whether each page is a color page or a black-and-white page based on the obtained image data; and causing the color image forming apparatus to form an image on the color page according to the determination result; Forming an image by a forming apparatus. 6. The image processing apparatus according to claim 1, wherein the developing step and the determining step are performed in the color image forming apparatus, and further comprising a step of transmitting a determination result of the determining step to the monochrome image forming apparatus together with page information. 5
The control method described. 7. The image processing apparatus according to claim 1, wherein the developing step and the determining step are performed in the black-and-white image forming apparatus, and further comprising a step of transmitting a result of the determining step together with page information to the color image forming apparatus. 5
The control method described.