JPH03224761A - Image processing device - Google Patents

Abstract

PURPOSE:To enable the same data to be printed rapidly by holding data from data input equipment which is expanded in a printer control device using a data holding device without the necessity to transfer the same data anew from data input equipment until the sheet printed by a main image processor system is completely discharged. CONSTITUTION:Input data from data input equipment 31 is temporarily stored using a buffer area 43a in RAM 43A of a printer control device 40. In this case, data which does not require a large-memory area, e.g. character code information, remains stored in the buffer area 43a even if reading a page from ROS 8 is completed, and a page memory unit 45 is cleared. In addition, data consisting of a large amount of graphic information is stored in the buffer area 43a of RAM 43A by selecting only the segments of data which fit the storable range. Data which has a page expanded in the page memory unit 45 remains held in the page memory unit 45 until the printed sheet is discharged to a discharge tray 30.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image processing apparatus using xerography, and particularly to an image processing apparatus having a print function.

[Prior Art] An image processing device has been developed in which a fluorescent display tube is attached to an image processing device using xerography, which is used exclusively as a copy machine, to provide a printing function. A schematic configuration diagram of this image processing apparatus is shown in FIG. In this case, information signals input as print or image from a computer or word processor 31 are sent to the fluorescent display tube of the main body of the image processing apparatus (hereinafter sometimes referred to as the base machine) 1.
The information signal is written on a photosensitive drum using a fluorescent display tube, and after a series of processing is performed, it is transferred to paper.

The base machine 1 of this embodiment shown in FIG. 1 is connected to a computer or word processor (hereinafter sometimes referred to as a data input device) 31 via a printer control device 40.

The information inputted by the computer or word processor 31 is converted into a bitmap via the printer control device 40 using font information, etc. possessed by the printer control device 40 itself, and the information is sent to the base machine 1 to instruct the base machine 1 to start printing, the output drive to be used, and the output drive. A command is given as to which bin to output or which size of paper to select, and if the base machine 1 is in a printable state, a printing operation is performed.

Further, an outline of an image processing apparatus using this fluorescent display tube will be explained with reference to FIG.

A photosensitive drum 2 is arranged inside the base machine 1.

In the figure, the photoreceptor 3 is formed in a layered manner on the outer peripheral surface of the photoreceptor drum 2 . This photosensitive drum 2 is connected to a drive device (not shown) so as to rotate in the direction of the arrow. On the outer periphery of the photosensitive drum 2, there are provided a charge corotron 5, a scanning type writing device (RO3>8) with a built-in fluorescent display tube (not shown), a condensing lens 7, a developing device 9, a transfer corotron 10, and a cleaning device 11. is located.

In this image processing apparatus, as the photosensitive drum 2 rotates in the direction of the arrow, the photosensitive member 3 is moved to the charge corotron 5.
After being uniformly charged, an electrostatic latent image is formed upon irradiation with light from a fluorescent display tube in R○S8. The condenser lens 7 is an arrangement of a large number of converging rod lenses in order to condense the light emitted by the large number of light emitting elements constituting the RO 38 onto the photoreceptor 3.

The photoreceptor 3 on which the electrostatic latent image has been formed is then developed using a developing device. The toner image formed on the photoreceptor 3 is transferred onto the paper 20 by the transfer corotron 10, thermally fixed between the heat roll 26 and the pressure roll 27, and then transported out.

On the other hand, the photoreceptor 3 is cleaned by a cleaning device 11 and is reused.

Further, when this image processing apparatus is used as a copying machine, the photoreceptor 3 on the charged surface of the photoreceptor drum 2 is exposed at the exposure point 13 . Here, a light image of a document (not shown) placed on a platen glass 12 placed on the top surface of the base machine 1 is incident on the exposure location 13 .

For this purpose, an exposure lamp 15 and a plurality of mirrors 16 and optical lenses 17 that transmit reflected light from the surface of the original illuminated by the exposure lamp 15 are arranged, and a predetermined one of these is used for scanning in order to read the original. It is now possible to do so.

Now, an electrostatic latent image corresponding to the original is formed on the photosensitive drum 2 by the image information exposed in a slit shape at the exposure portion 13. This electrostatic latent image is developed by a developing device 9 to create a toner image.

The toner image moves as the photosensitive drum 2 rotates and passes near the transfer corotron 10.

On the other hand, the supply tray 19 disposed in the base machine 1
The paper 20 stored in the paper 20 or the paper 20 that is manually fed along the manual feed tray 21 is transferred to the feed roll 2.
2 or 23, and is guided by a transport roll 25 to pass between the photosensitive drum 2 and the transfer corotron 10. At this time, the toner image is transferred onto the paper 20. After the transfer, the paper 20 passes between a heat roll 26 and a pressure roll 27 and is thermally fixed. Then, the sorter 3, which is an output tray, passes between the conveyor rolls 29.
Exported to 0.

Further, the circuit configuration of the printer control device 40 of this image processing apparatus is shown in FIG.

The printer control device 40 is controlled by a CPU 68000. Information input from a computer or word processor 31 is sent to an interface 42 such as the Centro system.
RAM of memory 43 in printer control device 40 via
43A, and is developed into a bitmap in the page memory 45 from the RAM 43A in the memory 43 (hereinafter sometimes referred to as page development). Information in the page memory 45 is sent as video data 47 to the base machine 1 via a video interface 46 . Page memory 4
5 is completed, the next input data from the computer or word processor 31 is transferred from the RAM 43A of the memory 43 to the page memory 45. Also, based on input information from the computer or word processor 31, the printer control device 40
Through four interfaces such as Information such as whether the current operating mode of the machine 1 is a copying state or a printing state, or the number of used bins of a paper output tray for printing is received.

Therefore, for example, if the base machine 1 is in the copying state, the printer control device 40 outputs an output standby signal for the printer to the computer or word processor 31 via the interface 42 such as the Cent 4 system, and even if the base machine 1 is in the printable state, For example, data is transferred from the computer or word processor 31 to the RAM 43A of the memory 43, and is expanded into a bitmap in the page memory 45. After the expansion is completed, the data in the page memory 45 is transferred to the base machine 1 according to the command 50, and is printed. An action is taken.

Note that the ROM 43B of the memory 43 stores a program for operating the printer control device 40 and printer font information.

A non-volatile memory (NVM) 43C is also connected, so that necessary data can be saved even when the printer control device 40 is powered off.

In this way, the operation of the base machine 1 can be controlled based on instructions from the computer or word processor 31.

This printer control device 40 is also provided with an operation panel 41 similar to the console panel 32 of this base machine 1. That is, in addition to keys for setting the number of sheets to be printed and magnification, the printer control device 40 also includes keys for setting print density, etc.

[Problems to be Solved by the Invention] However, the image processing apparatus described above has a problem in that it takes time to develop input information from the computer or word processor 31 into the page memory 45 of the printer control device 40.

For code information such as characters from the computer or word processor 31, the data development time to the page memory 45 is fast, but for graphic information etc., the data development time to the page memory 45 is slow. The reason for this is that there are many input processing operations for graphic information on the computer or word processor 31 side, and
Since the Centro type interface 42 has only a bit transfer line, graphic data with a large amount of data can be transferred to the printer control device 40 in B4 size, 240D.
PI (dot per inch) is 1MB,
This is because it takes about 60 seconds to develop an A3 size image at 240 DPI into the 1.4 Mbyte page memory 45.

Furthermore, it is necessary to redeploy the data in order to adapt the output from the computer or word processor 31, which has a 160 DPI, to the specifications of the base machine 1, which has a 240 DPI, for example, and this takes time.

In the current situation where copy machines are required to remove the copied paper 20 from the base machine 1 within a few seconds from the copy start command, the printing function requires a long time to develop the data into the page memory 45. This is a major bottleneck for image processing devices with

In this way, when printing out data that has been developed into pages in the page memory 45 over time on paper, it may be necessary to print the same data on multiple sheets, or even if the purpose is not achieved with just one printout. In some cases, a paper jam occurs in the middle of the paper transport path leading to the paper ejection tray 30, and it becomes necessary to redo not only the newly jammed part but also the entire printing process. This is because it takes a considerable amount of time to check the jammed page and send only that part of the data from the data input device 31, so the entire page must be reprinted.

Therefore, for example, in case a jam occurs after the paper is printed out until the paper is ejected from the base machine 1, it is possible to retain the data in the page memory 45 during that time. Since development to the next page memory 45 is delayed by the holding time, the print processing speed becomes extremely slow when printing a large number of pages for each page. In some cases, the speed is about half that. For this reason, methods such as increasing the speed by preparing the page memory 45 for two pages have been adopted, but this requires a large amount of expensive memory and is therefore only used in expensive printers.

In addition, after actually printing, check whether the selected settings for items such as the print start position, paper size, space area at the beginning of the paper, side space area of the paper, etc. are as desired. There are many times when I want to officially print out something again.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an image processing apparatus with quick response that can continue to hold data transferred to a printer control device and print out data again if requested.

Furthermore, another object of the present invention is that even if the data is developed in the page memory of the printer control device, the amount of data itself sent from the data input device is relatively small, and it takes a relatively long time to develop the page. For items that do not require this time, the page expansion data to the page memory is cleared as soon as the page memory is read to the base machine, and the next page of data is expanded, thereby saving the data retention time in the page memory. The purpose of the image processing apparatus is to improve the speed of the image processing apparatus while also preparing for unforeseen situations such as paper jams.

[Means for Solving the Problems] In order to achieve the above object, the present invention employs the following configuration.

In other words, in an image processing apparatus using xerography in which data from a data input device is printed on the image processing apparatus main body via a printer control device, data from the data input device developed in the printer control device is printed on the image processing apparatus main body. A data holding means for holding data in preparation for reprinting the same data until the ejection of printed paper is completed; an image processing apparatus in which a printer control device is provided with retained data reprint command means for performing print processing using data in the data retention means, or the image processing apparatus in which the data retention means is a storage section of the printer control device; Or, the data holding means stores a RAM buffer area for inputting transfer data from a data input device, and converts the data in the RAM into a bit map of one page of data in accordance with the image processing format of the main body of the image processing apparatus. If the data from the data input device is less than the storage capacity of the buffer area of the RAM of the image processing device or the printer control device, which is the page memory to be expanded, the data transferred from the data input device is held as is in the buffer area, The buffer area storage capacity of the RAM of the printer control device or the above-mentioned image processing device in which the printer control device is provided with a control unit that releases the retention of the data developed in the page memory when data reading is completed in the image processing device main body. The data from the above data input devices is held in the page memory while the image processing device is processing the print.
The above-mentioned image processing device has a control unit in the printer control device that does not retain data in the buffer storage area, or an image using xerography in which data from a data input device is processed by the image processing device itself via the printer control device. In the processing device, a dedicated means for printing the data developed in the page memory of the printer control device and/or
Alternatively, there is an image processing apparatus in which a printer control device is provided with means exclusively for setting the number of prints so that an image obtained by printing data input from a data input device can be printed again on one or more sheets.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

A schematic diagram of the main body of the image processing apparatus of this embodiment is shown in FIG. Furthermore, a schematic configuration diagram of the image processing apparatus of this embodiment including the base machine 1 shown in FIG. 2 is as shown in FIG.
It adopts a distributed CPU architecture using serial communication centered on U.

In addition, Fig. 4 shows the main C of the base machine 1 of this embodiment.
The circuit configuration centering around the PU51 is shown.

The main CPU 1 is reset by a reset circuit at the time of runaway or initialization, and is also connected to the following parts via pass lines.

(1) Keyboard/display LSI (large-scale integration port ¥8) 57: Console panel 32 of base machine 1
This circuit mediates data between the

(ii) Timer/counter LSI 59: This is a timer that provides a speed target value to which the main motor 60 for driving the photosensitive drum 2 should be synchronized. Since it is reciprocated by the carriage motor 61, it is also a circuit that controls the drive of this carriage motor 61.

(iii) ROM 62; This is a read-only memory having a capacity of 128 bytes and storing various control programs for the base machine 1.

(iv) RAM 63: Random access memory for data storage with a capacity of 8 bytes. A battery 65 for data backup is connected to this RAM 63, and is NVM-enabled so that necessary data can be stored even when the power of the base machine 1 is turned off.

(V) Slave CPU 66: A slave CPU 66 for interfacing between the base machine 1 and the printer control device 40 is connected. This CPU 66 is the control 1
4 bytes of R, 0M62 for 0g and 196 bytes of dual port RAM 63 for control and communication with main CPU 51 and printer controller 40
It has a built-in UART circuit for communication with.

(vi) First I10 controller 67; This is an input/output controller that inputs various data via the filter circuit 69 and drives various parts via the driver circuit 70. Here, various switches and sensors are connected to the filter circuit 69, for example. Also, the driver circuit 70
A clutch or the like for controlling on/off the drive of each feed roll 22 in the supply tray 19 is connected to the feed roll 22 .

(-1) Second I10 controller 71; inputs various data via the filter circuit 72, and inputs various data to the driver circuit 7
This is an input/output controller that drives various parts via 3. Here, various switches and sensors are connected to the filter circuit 72, for example. The driver circuit 73 is a well-known D/A (analog-digital) converter or PWM
It is equipped with a pulse width converter (pulse width converter) and is connected to a high voltage power supply (HVPS) (not shown). It is now possible to set the value.

Although not shown, the main CPU 51 also controls a tray control section, a sorter, a paper size sensor, a temperature sensor, a light amount sensor, a liquid crystal display section of a console panel, and the like.

It also has a built-in UART circuit for interfacing with other CPUs in the base machine 1.

For other control mechanisms of the base machine 1, please refer to Japanese Patent Laid-Open No. 63-283274.

Note that the circuit configuration of the printer control device 40 shown in FIG. 1 is as shown in FIG. 3.

In the image processing apparatus of this embodiment having the above configuration,
Data input from a computer or word processor 31 (hereinafter also referred to as data input device) is stored in the page memory 45 of the printer control device 40 in the RAM 4.
Expanded through 3A. The data developed in the page memory 45 can be changed by key operations on the operation panel 41 of the printer control device 40 such as the left margin, top margin, bottom margin, line, etc.
In addition to the number of lines, number of -line characters, number of character points, paper direction selection, whether or not to correct the printout start position using the sheet feeder, magnification settings, and kanji font size selection, print parameter settings, etc. User-definable settings, etc. can be made.

In this way, the data developed in the page memory 45 is printed out to the base machine 1, but when printing multiple pages, even after the data has been read from the page memory 45 to the RO 38 (Fig. 2) as described above. A jam may occur before the paper is ejected to the paper ejection tray 30 (FIG. 2). For this purpose, the 5 page memory 45 is used until the paper printed in the tray 30 is ejected.
job recovery mode) is effective. However, by retaining the data in the page memory 45 forever,
This obstructs the development of data from the next data input device 31 into the page memory 45 for printing, and goes against the request to process prints quickly.

That is, the area around the photosensitive drum 2 shown in FIG.

Approximately 3 seconds elapse before the paper 20 printed in the lint section is discharged to the tray 30.

After that, it takes about 2 seconds for normal code information to clear the data in the page memory 45 and develop new data. Therefore, continuing to hold data in the page memory 45 in preparation for jams that occur infrequently results in a large loss of time.

For this reason, there is a method of preparing the page memory 45 for two pages, but this requires a large amount of expensive memory, which significantly increases the cost of the device. It is used to temporarily store input data from the data input device 31. In that case, the page memory 45 is loaded with paper-page data, but depending on the type of data, the buffer area 4 of the RAM 43A of the printer control device 40
Since it may not be possible to store data for -pages in 3a, the following procedure is used.

That is, data that does not require a large memory area,
For example, code information such as characters is stored in the buffer area 43a in the RAM 43A of the printer control device 40 even after page reading by the RO 38 is completed, and the page memory 45 is cleared.

For example, the maximum transfer data for A4 size character information is 3,200 characters per print paper page, but among the code information, each character is 2 bytes for Kanji characters and 1 byte for alphabets. That is, a maximum memory space of 6,400 bytes is sufficient for code information. Since the RAM 43A of the printer control device 40 has a memory area of 0.5 Mbytes, the above A4 size character information can be stored in the RAM even if the maximum data amount is 100% of the print paper.
It can be stored in the buffer area of 43A with plenty of room.

On the other hand, graphic information and the like have a large amount of data for one page, and it takes time to expand the data into pages, and it cannot be stored in the buffer area 43a of the RAM 43A of the printer control device 40. Therefore, data with a large amount of data such as graphic information is stored in the RAM 43 of the printer control device 40.
The buffer area 43a of A stores only the data that can be stored, and the data whose pages have been developed in the page memory 45 are stored until the paper on which the data is printed is ejected to the ejection tray 30. A conceptual diagram of this embodiment that is retained in the page memory 45 is shown in the fifth figure.
As shown in the figure. First, as shown in Fig. 5 (1) to (12),
The A page data transferred from the computer or word processor 31, which is a data input device, to the RAM 43A of the printer control device 40 is saved in the buffer area 43a, and the code information expanded into focus map data is sent to the page memory 45. Store it as base data. Even if the A page information in the page memory 45 is cleared when the page reading for the A page is completed in the RO 38, even if the print paper jams before completion of being ejected to the tray 30, the RAM 43A
Data can be redeployed from the buffer area 43a to the page memory 45.

Furthermore, as shown in FIGS. 5(3) and 5(4), when the B page data for the next print page is transferred from the data input device 31, the new B page data is transferred to the buffer area 43a together with the A page data. Stored. Therefore, any number of pages can be temporarily stored in the buffer area 43a as long as the capacity is less than the capacity that can be stored within the buffer size of the RAM 43A, and even in job recovery mode, these data can be stored in the RO 38 page. Upon completion of data reading, the page memory 45 is cleared and development of the next page begins.

In addition, as shown in FIG. 5 (5), the buffer area 43a
C page data consisting of an amount of data that cannot be stored in the buffer area 43 is transferred, and the -page worth of data is transferred to the buffer area 43.
When it becomes impossible to store data in the buffer area 43
Wait until the B page data, the entire page of which is stored in a, has been completely ejected to the paper ejection tray 30, clear the B page data in the buffer area 43a, and then
The page data is stored in the storage area 43a (FIG. 5(6)).

However, as shown in FIG. 5(7), the C page data cannot be completely stored in the buffer area 43a, so it remains in the page memory 45 until the paper on which this data is printed is completely discharged to the tray 30.

The above procedure will be explained with reference to the flowchart shown in FIG.

First, print data is transferred from the data input device 31 to the printer control device 40, and the data is stored in the RAM 43.
The data is sequentially stored in the buffer area 43a of A from the last address of the buffer area. Therefore, if the last buffer address and the address of the page-expanded data to the page memory 45 do not match, it means that the data to be page-expanded from the data input device 31 to the page memory 45 is being stored in the buffer area 43a. It is.

Therefore, the transmitted data from the data input device 31 is expanded into pages in the page memory 45 via the RAM 43A (step 2). Then, when the page development of the first page's data is completed, or when the data development of the last line of -page is completed, or if there is a page break command, the page development of one page is completed by that command. Step 3) starts printing out one page of expanded data to the page memory 45 (Step 4). Even if the printed paper jams in the paper conveyance path, the buffer address information will be saved. Based on
Page development is performed again in the page memory 45 from 3a. For this operation, address information from the start address to the end address of the buffer 43a corresponding to the page currently being printed out is stored (step 5).

When the data for the page currently being printed out has been read out by the scanning writing device (RO3) 8 (Fig. 2) (step 6), the paper on which that page has been printed is delivered from the base machine 1 to the output tray. Make it so that the signal that outputs that it has been ejected at 30 can be interrupted (
Step 7), and further perform processing operations on the data newly transferred from the data input device 31 (Step 1)
.

Further, as shown in the flowchart of FIG. 7, when this paper ejection completion interrupt signal is input, the buffer data for the pages ejected to the ejection tray 30 is deleted from the buffer information in the RAM 43A (step 26) and retained. The desired buffer amount is subtracted (step 27) so that data for a new page can be stored in the buffer area 43a.

Also, the buffer area 43a of the RAM 43A! & If the tail address and the buffer address of the page expanded data in the page memory 45 match, the data input device 31
From then on, it is determined that all data transferred to the RAM 43A and stored in the buffer area 43a have been expanded into pages in the page memory 45 (step 1).
.

−If the amount of data for a page is larger than the buffer capacity,
For example, when data that cannot be stored in the buffer area 43a, such as graphic information, is transferred to the RAM 43A, the buffer area 43a becomes full (step 8). Therefore, at that point, it is necessary to judge whether there is any page data being printed out or not (Step 9). If there is data being printed out, wait until the printing is finished; if not, there is no possibility of a page jam. Clearing the data in the buffer area 43a that has already been developed in the memory is called clearing the number of buffers. ), and at the same time permit the Centro interface 42 to transfer data from the data input device 31 (step 10). Therefore, the reception of the remaining data that could not be stored in the buffer area 43a of the graphic information is resumed, and the reception is started to develop the received information in the page memory 45 (Step 12), and the buffer area 43a that has already been developed is sequentially loaded. Clear it (step 13). - When the page expansion of all the graphic information for the page is completed (step 14), print out the page memory expansion data (step 15)
, waits for the print paper to be completely discharged onto the tray 30 (step 16).

By doing this, if the data cannot be buffered, the expanded page data will be retained until the paper is completely ejected, in preparation for job recovery in the event of a jam.

As shown in FIG. 8, data is received and received from the data input device 31 via the Centro interface 42 (step 28), and is stored in the buffer 43a in the RAM 43A (step 29). Then, the number of buffers in use is updated (step 30), and the addresses of all data stored in the last buffer are updated (step 31). Then, when the number of used buffers exceeds the total amount of buffers that can store data, interrupts from the Centro interface 42 are prohibited (step 33).
.

At the start of print processing, the centro interrupt is enabled, and the above processing is performed in response to data input from the data input device, and data is accumulated in the buffer area 43a. As mentioned above, when a large amount of data is buffered due to backup, when it becomes impossible to store the data, subsequent centro interrupts are prohibited and data input is stopped. At this point, the main routine waits for the previous data to be discharged in a loop at step 9 in FIG. The subsequent processing is as described above.

Further, as shown in FIG. 9, when a jam of printed paper occurs in the paper conveyance path (step 34), page development is performed from the first page of the buffer information being printed out that has been stored in step 5. Redo step 35) and print again (step 36). Here, it is checked whether the ejection of the printed paper is completed (step 37), and if the ejection of the paper is completed, the first page in the buffer information corresponding to the page data is deleted (step 38). At the same time, subtract the buffer amount (step 3), judge whether there is any buffer data remaining during printing (step 40), if it remains, redeploy from the first page of that amount, otherwise subroutine for jamming get out of

As described above, key operations on the operation panel 41 of the printer control device 40 can be used to select the left margin, top margin, bottom margin, line pitch, number of lines, number of -line characters, number of character points, paper direction selection, sheet feeder, etc. Following the selection of whether or not to correct the printout start position, setting the magnification, selecting the kanji font size, etc., the user can perform settings that can be defined by the user, such as setting printing parameters.

However, the most reliable way to check whether these multi-purpose settings are set as intended is to print them out on paper.

As shown in Figure 6, step 1.8.17.24.2
After step 5, set various parameters and proceed to steps 1 to 7.
After that, print it out once.

If parameters need to be corrected, the above steps are performed again and one sheet is printed out.

If you need multiple sheets, step 1.8.17.18
After setting the required number of sheets and starting operation after steps 23 to 23,
You can start printing immediately. Therefore, even if it takes time to transfer data from the data input device 31 or the like and to develop it into the page memory 45, it is possible to efficiently check and obtain multiple prints.

In addition, if you do not mind a slight reduction in image quality, you can obtain a document by placing the printout paper on the platen glass 12 (Fig. 2) of the base machine 1 and copying it. You can create print documents and copy documents depending on your needs.

[Effects of the Invention] As described above, according to the present invention, the data holding unit retains data from the data input device developed in the printer control device until the ejection of the printed paper in the image processing device main body is completed. The same data can be quickly printed again without having to be retransferred from the data input device.

In addition, in the case of general data with a large number of characters, as soon as the reading of the page data on the base machine is completed, the page data is cleared and the development of the next page begins.
You can quickly print multiple pages. Furthermore, since there is no need to have multiple page memories, the cost is low.

Furthermore, if the printer control device is provided with means dedicated to printing commands and/or means dedicated to setting the number of prints,
You can check the printed paper once for the data that has been developed in the page memory, and if it is what you want, you can print it again.Moreover, you can print multiple copies, so it is especially useful for data input and page development. The time required to develop pages of an original can be saved, and an output image that is clearer than that of copied paper can be obtained.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram of the image processing device of the present invention, Fig. 2 is a schematic diagram of the main body of the image processing device, Fig. 3 is a circuit diagram of the printer control device, and Fig. 4 is a main CPU circuit configuration diagram of the image processing device. , FIG. 5 is a conceptual diagram of the procedure for storing data in the buffer area of the printer control device, and FIGS. 6 to 9 are flowcharts showing the procedure for storing data in the buffer area of the printer control device.

Claims (6)

[Claims] (1) In an image processing device using xerography, in which data from a data input device is printed on the image processing device itself via a printer control device, the data from the data input device developed in the printer control device is transferred to the image processing device itself. a data holding means for holding data in preparation for printing the same data again until the ejection of the printed paper is completed; An image processing apparatus characterized in that a printer control device is provided with retained data reprint command means for performing print processing again using data in the data retaining means. (2) The image processing apparatus according to claim 1, wherein the data holding means is a storage section of a printer control device. (3) The data holding means is a buffer area of RAM into which transfer data from a data input device is input, and a page memory in which data for one page is expanded according to the image processing format of the main body of the image processing apparatus. The image processing apparatus according to claim 1 or 2, characterized in that: (4) If the data from the data input device is less than the buffer area storage capacity of the RAM of the printer control device, the control unit releases the data developed in the page memory when the image processing device finishes reading the data. 4. The image processing device according to claim 3, wherein the image processing device is provided in a printer control device. (5) For data from a data input device that exceeds the buffer area storage capacity of the RAM of the printer control device, the data being printed by the image processing device is retained in the page memory, but the data in the buffer storage area is not retained. 4. The image processing apparatus according to claim 3, wherein the control section is provided in a printer control device. (6) In an image processing apparatus using xerography, in which data from a data input device is image-processed by the image processing apparatus main body via a printer control apparatus, a dedicated means for printing the data developed in the page memory of the printer control apparatus; An image processing device characterized in that the printer control device is provided with means dedicated to setting the number of prints, so that an image once printed from data input from a data input device can be printed once again on one or more sheets. .