JP3353625B2 - Image forming device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an image forming apparatus, and more particularly, to an image forming apparatus having a job interleaving function.

[0002]

2. Description of the Related Art An image forming apparatus having a multi-job function is, for example, one having a memory for storing image information and capable of reading an original, which is another job, while printing out a certain job.

In a conventional copier having a multi-job function, as shown in Japanese Patent Application Laid-Open No. 5-75772, print output of the next job is started immediately after the end of a job being printed.

Particularly, in an image forming apparatus having a memory, when ten copies are to be made, for example, the original is read and stored in the memory, so that the original need be read only once. Then, since the image is formed and the paper is output based on the image data stored in the memory, there is an advantage that the operator can take the document home immediately after completing the reading of the document. Also, regardless of whether or not the image forming apparatus is performing printing, an instruction to read a job for the next copy can be issued. The read job is temporarily stored in the memory, and the printing operation is started as soon as printing of the job being printed is completed. For this reason, the discharged sheet of the next job is superimposed on the discharged sheet bundle of the previous job, and it is very difficult to take out only the discharged sheet bundle of the previous job. Further, when the paper size of the previous job and the next job is the same, the job must be identified by the printed image, and there is a problem that the usability is extremely deteriorated.

Further, in an image forming apparatus having a multi-job function, a plurality of jobs printed out at the discharge port of the image forming apparatus are overlapped. There was a problem that it was not possible to immediately determine where it was.

[0006] Even if the image forming apparatus does not have the multi-job function, the same problem occurs if printing of the next job is started before taking out the sheet bundle of the previous job.

In order to solve such a problem, for example, as shown in US Pat. No. 4,201,464, a technique has been proposed in which a slip sheet is inserted for each job to facilitate identification of each job. Further, when outputting a plurality of jobs, it is also conceivable that the discharge direction is changed alternately in the vertical and horizontal directions for each job and the job is discharged to facilitate identification of each job.

[0008]

As described above, the following problems still occur even if the technique of inserting a slip sheet for each job or changing the paper discharge direction for each job as described above is employed.

For example, even if a slip sheet is inserted for each job, if there are a plurality of jobs on the paper discharge tray, it is necessary to identify the print job of the print job after all. It is necessary to confirm the out-job, that is, the printed image.

Further, in a face-down system in which the paper is discharged so that the printed surface of the paper faces down,
Even if a slip sheet is inserted for each job or the paper ejection direction is changed for each job, the print side is facing down, so it is easy to determine whether it is your own print job or another person's print job Can not do it.

The present invention has been conceived in order to solve such a problem, and an object of the present invention is to enable an operator to easily identify his or her own print job from a sheet bundle. An object of the present invention is to provide a user-friendly image forming apparatus. In addition, the job identification information printed on the slip
An object of the present invention is to provide an image forming apparatus that can be easily confirmed.

[0012]

[0013]

SUMMARY OF THE INVENTION An image forming apparatus according to claim 1 includes an image forming means for forming an image of the job data on paper, the paper on which an image has been formed by the image forming means, image formation Fay for discharging been side down
An image forming apparatus comprising: a down discharge unit; and a control unit configured to control discharge of an interleaf sheet at each job division . The image forming apparatus operates the image forming unit to print job identification information on the interleaf sheet. The job identification information
The printed surface, characterized that you discharge the paper fit in the above.

[0014]

According to the image forming apparatus of the first aspect,
Since the job identification information is printed on the slip sheet ejected in response to the completion of the ejection of the sheets of the job, the user can easily identify his / her job from the sheet bundle. In addition, job identification information
The slip is discharged so that the printed side of the report is always up.
Operators can more easily identify their jobs
Become.

[0016]

[0017]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front sectional view showing the entire configuration of the copying machine according to the present embodiment. Copier 1 includes an image reader IR and a page printer PRT.

The image reader IR has a platen glass 18.
A scanning system 10 for reading a document placed on the original by decomposing the original into pixels, and an image for performing quantization of a photoelectric conversion signal output from the scanning system 10 and signal processing according to various image forming modes. It includes a processing unit 20, a memory unit 30 for storing image data corresponding to a document, and a control unit 100 for controlling the entire copying machine 1. An automatic document feeder (hereinafter, referred to as "ADFR") 500, which is an additional device also serving as a document cover, is mounted on the upper portion of the image reader IR so as to be openable and closable with its rear end as a fulcrum.

The scanning system 10 is a line scanning type image reading mechanism. The scanning system 10 includes a scanner 19 having a document irradiation lamp 11 and a mirror 12, and a fixed mirror 13.
a and 13b, a condenser lens 14, and a CCD (Char
ge Coupled Device) Image sensor 1 consisting of an array
6 and a scan motor M for driving the scanner 19
2 is included. The image signal processing section 20 and the memory unit section 30 will be described later.

The ADFR 500 includes a paper feed roller 501, a separating roller 502, a separating pad 503, an intermediate roller 504, and a registration roller 50 for transporting a document set on the document stacker 510 onto the document table glass 18.
5, a conveying belt 506, a reversing roller 507 for reversing the front and back of the document, a switching claw 508, a discharge roller 509 for discharging the read document onto a discharge tray 511, and a document scale 512. , A document sensor SE50 for detecting the presence or absence of a document, a document size sensor SE51, and a discharge sensor SE52.

The page printer PRT includes a print processing unit 40 for outputting an exposure control signal, a print head 60 using a semiconductor laser 62 as a light source, a photosensitive drum 71, and a charger for charging the photosensitive drum 71. 7
2, a developing / transfer system 70 </ b> A including a developing device 73, a timing roller 82, a conveying belt 83, and a fixing roller pair 84.
And discharge roller 85, fixing and discharging system 70B having horizontal conveying rollers 86a, 86b, and 86c, circulating paper conveying system 70C including re-feeding unit 600, and can store about several hundred sheets. It includes two paper cassettes 80a and 80b, a paper size detection sensor SE11, and a paper size detection sensor SE12.

The print head 60 includes a polygon mirror 65 for deflecting a laser beam, and a polygon mirror 6.
5 includes a main lens 69 for guiding the laser beam deflected to 5 to the photosensitive drum, and various mirrors 67a, 68, and 67c.

The refeed unit 600 includes a switching claw 601.
, A transport roller 602, a forward / reverse roller 603, a paper sensor SE <b> 61, and a paper discharge tray 621.

When copying a plurality of originals, the operator sets the originals on the original stacker 510 such that the originals face up. Each original on the original stacker 510 is pulled out one by one from the lowermost original, and is accurately set at a reading position on the original platen glass 18 with its front surface facing downward. Then, in the case of the single-sided original mode, after the reading by the image reader IR is completed, the original is conveyed to the left in the figure and is discharged onto the discharge tray 511 such that the upper surface becomes the front surface. In the case of the double-sided original mode, the original sent to the left after the front side reading is turned over by the reversing roller 507 and returned to the reading position on the original platen glass 18 again. The sheet is sent to the left again and discharged onto the discharge tray 511.

Based on the image data read by the page reader PRT by the image reader IR and transferred to the print processing unit 40, an image is formed by the following electrophotographic process.

First, a print processing unit 4 based on image data
The laser beam emitted from the semiconductor laser 62 is deflected in the main scanning direction by the polygon mirror 65 in accordance with the signal from 0, and the main lens 69 and various mirrors 67a, 68,
And 67c are guided to the exposure position of the photosensitive drum 71. The surface of the photosensitive drum 71 is charged with a charger 72.
Are uniformly charged. Therefore, the latent image formed by exposure becomes a toner image via the developing device 73.
The toner image is transferred by the transfer charger 75 onto the sheet fed from the sheet cassettes 80a and 80b at the transfer position. Thereafter, the sheet on which the toner image has been transferred is separated from the photosensitive drum 71, sent to the fixing roller pair 84 by the conveyor belt 83, and discharged face-up, that is, discharged to the discharge tray 621 with the sheet surface facing upward.

A refeed unit 600 is an additional device for automating double-sided copying, and includes a page printer PRT.
It is attached to the side of. The refeed unit 600 is
The sheet discharged from the page printer main body by the discharge roller 85 is temporarily stored, switch-back conveyed, and sent back to the page printer main body.

In the one-sided copy mode, the paper is discharged to the paper discharge tray 621 with the image forming surface facing up through the re-feed unit 600. On the other hand, in the duplex copying mode, the switching claw 60 is operated by a solenoid (not shown).
1 moves upward, and the sheet discharged from the discharge roller 85 reaches the forward / reverse roller 603 through the transport roller 602. When the trailing edge of the sheet reaches the sheet sensor SE61, the forward / reverse roller 603 is inverted. by this,
The paper is returned to the page printer. The returned paper is sent to the timing roller 82 through the horizontal transport rollers 86a, 86b, and 86c and waits. Here, when a plurality of sheets are continuously fed, the sheets are conveyed one after another at predetermined sheet intervals so as not to overlap each other, and sent to the re-feeding unit 600. Since the length of the paper transport path is constant, the re-feed unit 60
The number N of sheets (the maximum number of circulated sheets) in the section of 0 and one circulation by the horizontal transport rollers 86a to 86c depends on the sheet size.

FIGS. 2 and 3 are block diagrams showing the configuration of the control unit of the copying machine according to the present embodiment. The same elements as those described in FIG. 1 are denoted by the same reference numerals. Detailed description of these will not be repeated here. The control unit 100 has seven CPUs (Central Process
ing Unit) 101 to CPU 105, CPU 107, and CPU 108. Each of these CPUs has a ROM (Read Only Memory) 1 storing a program.
11 to 115, ROM 117 and ROM 118, and RAM (Random Access Memory) 121 to 12
5, a RAM 127, and a RAM 128. CPU
106, ROM 116, and RAM 126 are provided in the memory unit 30.

The CPU 101 controls signal input from various operation keys on an operation panel (not shown) and display control on the operation panel. The CPU 102 controls each unit of the image signal processing unit 20, and the CPU 103 controls driving of the scanning system 10. The CPU 104 controls the page printer PRT including the print processing unit 40. CPU 105 performs processing for adjusting the overall timing of control unit 100 and setting the operation mode. Therefore, the CPU 105
Performs serial communication with another CPU to transmit and receive commands and reports necessary for control. CPU106
Controls storage and reading of image information. CPU
Reference numeral 107 controls the document conveyance by the ADFR 500 described above. The CPU 108 controls the re-feeding unit 60 described above.
0 is controlled.

FIG. 4 is a block diagram of the image signal processing section of the copying machine according to the present embodiment. The image signal processing unit 20
An A / D (Analog / Digital) conversion unit 21 for quantizing the photoelectric conversion signal of the image sensor 16 and converting it into image data; and an image for performing image processing and outputting the processed image data as read information. It includes a processing unit 22, an image monitoring memory 23 for storing sample data for shading correction, and a timing control unit 24 for outputting a synchronization signal of the operation of each of these units.

The A / D converter 21 is provided for the image sensor 16.
Are converted to 8-bit (256 gradation) image data. The image processing unit 22 performs image processing such as shading correction, MTF correction, gamma correction, and scaling processing, and outputs the processed image data D2 as read information. The image monitor memory 23 is used for storing sample data for shading correction.

FIG. 5 is a block diagram showing the configuration of the memory unit according to the present embodiment. Memory unit 3
0 denotes a binarization processing unit 301 and an input image memory 302
, A compressor 303, a rotation processing / expansion unit 305, a code memory 304, an output image memory 306, a multi-value processing unit 307, and a CPU 106 for controlling these.
The memory unit 30 compresses and stores image information to save memory capacity. The input image memory 302 and the output image memory 306 each store 400 dpi (do
(ts per inch), and has a capacity capable of storing image data when reading and outputting an A3-size document.

When an image read by scanning a document is temporarily stored, 8-bit image data D2 is input from the image signal processing unit 20 to the binarization processing unit 301 of the memory unit 30. The binarization processing unit 301 converts the multi-level image data D2 into binary image data by, for example, an error diffusion method. The binarized image data is once written into the input image memory 302.

The compressor 303 reads out the image data written in the input image memory 302, compresses the image data to generate code data (compressed data), and writes it into the code memory 304. The rotation processing / decompressor 305 reads out the code data to be printed from the code memory 304 and decompresses it, and applies rotation to the obtained image data as necessary,
Write to the output image memory 306. Note that the compressor 303 and the rotation processing / expansion unit 305 are configured to operate independently and in parallel with each other to improve the copy speed. Between these and the code memory 304, data is DMA-transferred by a DMA (Direct Memory Access) controller (not shown).

When one page of image data is reproduced by decompression, the data is read from the output image memory 306 and restored to a multi-valued image by the multi-value processing section 307.
The multi-valued image data is transferred to the print processing unit 40 as exposure control data.

FIG. 6 is an explanatory diagram of a management table showing the relationship between jobs and code memories according to the present embodiment. The code memory 304 is divided into memory areas in units of 32 kilobytes, and in consideration of enabling simultaneous control of writing (at the time of reading) and reading (at the time of printing), each area has its own page. Is stored.

The management table MT1 includes a code memory 30
4, a page number (document image number) P of image data added in the writing order (document scanning order)
N, the numbers of connected areas (pre-connection, post-connection), and various additional information required for the compression / decompression processing such as the compression method and data length are stored. The code memory 304 is dynamically managed by the CPU 106 based on these pieces of information.

The "previous link" in FIG. 6A indicates a forward link of an area of 32 kilobytes in each page, and when this is "00", it corresponds to one page. If it is other than "00" indicating that it is the first storage area of the data, it indicates the number of the area connected before it. "Post-consolidation" is 32
It indicates the backward connection of the area in units of kilobytes. If it is "FF", it indicates the last area, and if it is other than "FF", it indicates the number of the area that follows. Show.

The CPU 106 reads out the image data from the input image memory 302 and compresses the image data.
By controlling the compressor 303 while creating the information of T1,
The compressed image data is stored in the code memory 304.
When outputting image data, code data is read from the code memory 304 by the reverse operation. The information in the management table MT1 is deleted when the corresponding page information is normally read and the copy of the number (number of copies) M specified by the operator is completed.

Next, with respect to the operation sequence of the copying machine 1 for reading and printing the original, each of the CPUs 101 to CP
The following mainly describes the flow of request commands (Q), reports (A), and data exchanged between U106.
FIG. 7 is a diagram showing a schematic sequence of a document reading operation according to the present embodiment. In the original reading operation, image data is transferred from the image signal processing unit 20 to the memory unit 30.

First, the CP managing the entire sequence
U105 requests the CPU 106 for memory preparation. In response to this, the CPU 106 sets the bus connection state for the internal hardware to transfer the image data D2 from the image signal processing unit 20 to the memory unit 30.

When these settings are completed and preparation is completed, the CPU 106 notifies the CPU 105 of the completion of memory preparation. The CPU 105 has the CPU 106 and C
When a reading request is issued to the PU 102, the CPU 102 requests the CPU 103 to perform scanning.

A scan is started by the CPU 103,
Image data is transferred to the image processing unit 20 by the image sensor 16 via the scanner 19. Next, the CPU 10
The read data (image data D2) is transferred from the image signal processing unit 20 to the memory unit unit 30 in accordance with the image processing mode set in Step 2.

When the scanner is completed, the CPU 102 and the CPU
When the completion of reading is notified from the CPU 106 to the CPU 105,
The CPU 105 requests the CPU 106 to perform data compression. In response to this, the CPU 106 activates each unit as described above. As a result, the compression process is performed, and the compressed data is stored in the code memory 304. When the compression process is completed, the CPU 106 notifies the CPU 105 of the completion of the compression.

FIG. 8 is a diagram showing a schematic sequence of a printing operation according to the present embodiment. In the printing operation, image data is read from the code memory 304, and a copy image is printed on a sheet based on the image data.

The CPU 105 requests the CPU 106 to expand the data. The CPU 106 activates each unit as described above. Thus, the decompression process is performed, and the image data is written into the output image memory 306. Next, CPU
106 sends an extension completion report to the CPU 105.

When the decompression process is completed, the CPU 105
It requests the PU 106 to prepare a memory for reading image data from the output image memory 306. In response to this, the CPU 106 performs processing on the internal hardware such as setting of a bus connection state for transferring the image data D3 from the output image memory 306 to the print processing unit 40, and setting for rotation processing. Next, the CPU 106 sends a memory preparation completion report to the CPU 105.

When these processes are completed and preparations are completed and the notification is received, the CPU 105
Request print output from U104. CPU10
4 sends a paper feed report to the CPU 105 to inform the CPU 105 of the paper transport state. Thereafter, the image data D3 read from the output image memory 306 is output to the print processing unit 40, and the print output is performed.

When the print output is completed, the CPU 10
6, and the CPU 104 sends a print completion report and an ejection completion report to the CPU 105.
The CPU 105 receiving these reports gives a memory clear request to the CPU 106 as necessary.

Hereinafter, the operation of the copying machine according to the present embodiment will be described in more detail with reference to a flowchart.

FIG. 9 is a main flowchart of a program executed by CPU 101 for controlling the operation panel according to the present embodiment. When the power is turned on, the CPU 1
01 performs an initial setting process for initializing the RAM 121 and the registers (# 11). Thereafter, an internal timer setting process for defining the length of one routine (# 12), a key input process for accepting a key operation (# 13), a panel display process for performing a display according to the operation (# 14),
Other processing (# 15) and time-up confirmation of the internal timer (# 16) are repeatedly executed. In addition, communication with another CPU is performed as an interrupt process at an appropriate time.

FIG. 10 is a main flowchart of a program executed by CPU 104 for controlling page printer PRT according to the present embodiment. The CPU 104
After performing the initial setting process (# 41), the internal timer setting process (# 42) and the development transfer system control process (# 4
3), control processing of the transport system (# 44), control processing of the fixing system (# 45), control processing of the print processing unit (# 46), other processing (# 47), and confirmation of time-up of the internal timer (# 44). # 48) is repeatedly executed.

FIG. 11 shows a control unit 100 according to this embodiment.
9 is a main flowchart of a program executed by a CPU 105 for performing overall timing control of FIG. CPU
105 performs an initial setting process (# 51), sets an internal timer (# 52), and analyzes input data from another CPU (# 5).
3), a mode setting process (# 54) for determining an operation mode according to the operation content, an interrupt switching process (# 55), a command setting process according to the mode (# 56), and the command is made to wait in the communication port. Output data set processing (♯
57), other processing (# 58), and time-up confirmation of the internal timer (# 59) are repeatedly executed.

FIG. 12 is a main flowchart of a program executed by CPU 106 for controlling storage and reading of image information according to the present embodiment. Referring to FIG. 12, after performing initial setting processing (# 61), CPU 106 executes command reception processing (# 62), status transmission processing (# 63), image memory writing processing (# 64), compression control Processing (# 65), decompression control processing (# 66), image memory read processing (# 67), and other processing (# 68)
Is repeatedly executed.

FIG. 13 is a plan view of the operation panel of the copying machine according to the present embodiment. The operation panel OP includes a touch panel 91 for status display and various mode designations, a numeric keypad 92 for inputting numerical value conditions for copying (number of sheets, magnification, etc.), and a clear key 93 for returning numerical value conditions to standard values. , A panel reset key 94 for initializing the copy mode, a stop key 95 for instructing to stop copying, a start key 96 for instructing to start copying, and whether the document is a single-sided or double-sided original. , A copy mode key 101 for switching between double-sided copy and single-sided copy, and a slip sheet setting key 102 for setting whether to output a slip sheet.
And a job reservation key 103 for reserving a job.

Next, the screen control of the copying machine according to the present embodiment will be described with reference to FIGS. FIG.
16 to 16 are explanatory diagrams of screen control of the operation panel of the copying machine according to the present embodiment. In the copying machine according to the present embodiment, as shown in FIG. 13, "copy is possible" is displayed in a normal state. After the original is set and the operation mode is set, pressing the start key 96 starts copying. Then, as shown in FIG. 14, the touch panel 91 switches to the display of "copying". In this state, it operates as a single job.
Then, when reading of all originals is completed and the original can be brought back, and the job reservation key 103 is pressed thereafter, a screen indicating that further job reservation is possible together with the reserved job number as shown in FIG. Transitions to.
When the job is in the job reservation state, a newly accepted job is accepted every time the start key 96 is pressed by the same operation as in the case of the single copy described above. When the job reservation key 103 is pressed, the accepted job is considered to have completed the job registration.

Since the number of jobs that can be reserved is limited due to the capacity of the memory, the amount of light on the touch panel 91 is reduced to make it darker when no more jobs can be reserved. Thus, it is possible to indicate to the operator that a new job cannot be accepted (FIG. 16).

Next, with reference to FIGS. 17 to 21, the processing procedure of the slip sheet processing will be described. 17 to 21 are flowcharts showing the procedure of the slip sheet processing according to the present embodiment. This processing is performed by the CPU 104 described above with reference to FIG.
Is executed in another process (# 47) in the main flowchart of FIG. First, it is determined whether or not the status is “standby” (# 1801). In the case of “waiting”, it is determined whether or not “job registration is performed” (♯
1802). If it is determined that the job is not “job registered”, it is searched for the registration of the next job (# 182
5 (FIG. 20)). On the other hand, if it is determined that "the job has been registered", the job number is stored (# 1803), and a reading sequence for executing image reading is started (# 180).
1804). Further, an output sequence for printing the input image is started (# 1805). Then "waiting"
Is set to "Job registration", the status of "single job is being executed" is set (# 180
6). Thereafter, a search is performed to determine whether or not the next job is registered (# 18
25 (FIG. 20)).

If not "standby"(# 180
1) It is determined whether or not the status is "single job in progress"(# 1807). If "single job is being executed", it is determined whether or not "reading is completed"(# 1808). If the status is "reading completed", the status is set to printing (next job reservation possible) (# 1
809). Then, search for the registration of the next job (♯
1825 (FIG. 20)). On the other hand, if it is not “reading end”, it searches for the registration of the next job (# 1825 (FIG. 20)).

On the other hand, if the status is not "single job in progress"(# 1807), the status is "the next job can be reserved".
Alternatively, it is determined whether or not “printing” (# 1
810). If "next job reservation possible" or "printing", it is determined whether or not job reservation has been instructed by the operator (# 1811). When the job reservation is instructed, the job number of the new job is stored (# 1812), and the job interleaving mode is stored (# 1813). Next, the reading sequence is started (# 1814), and the status is set to "printing and reading"(# 1815). Next, it is determined whether the printing of the current job is completed (# 1816). On the other hand, if "job reservation instruction is not issued", it is determined whether or not printing of the current job is completed (# 1816).

If the printing of the current job has not been completed, a search is made to see if the next job has been registered (# 1825).
(FIG. 20)). If the printing of the current job has been completed, the job numbers of all the jobs are decremented (# 1817), the status is set to the next job search (# 1818), and the presence or absence of registration of the next job is searched (# 1818). ♯
1825 (FIG. 20)).

If the status is not "next job reservation possible"(# 1810), "printing" and "reading"
Is determined (# 1819). If it is not “printing” or “reading”, a search is made to see if the next job is registered (# 1825 (FIG. 20)). If "printing" and "reading", it is determined whether or not "reading completed"(# 1820). If it is not “reading completed”, it is searched for the registration of the next job (# 18
25 (FIG. 20)).

If the status is "reading completed", the status is set to "printing"(# 1821), and it is determined whether or not "the next job can be reserved"(# 1822). If "next job reservation is possible", the presence / absence of registration of the next job is searched (# 1825 (FIG. 20)). "Next job can be reserved"
If not, the status is set to "reservation impossible", and FIG.
As shown in FIG. 6, the backlight of the touch panel 91 is turned off to display a next job non-reception screen (# 1823). Next, since the image cannot be read, the power of the image reading unit is turned off (# 1824). Thereafter, the presence or absence of registration of the next job is searched (# 1825 (FIG. 20)).

If it is determined that the next job is registered (# 1825), it is determined whether or not the job is in the "job interleaving mode"(# 1826). If the job interleaving mode is set, the CPU 106 (memory management) is instructed to draw job information (job number, etc.) (# 18
27), and waits for completion of drawing (# 182)
8). Thereafter, the present process ends.

If it is not the "job interleaving mode"(# 1826), it is determined whether or not there is a next job (# 18).
1829). If there is no next job, the process ends. If there is a next job, the output sequence is started (# 1830), and the status is set to "printing" and "reading"(# 1831). Thereafter, the present process ends.

If it is determined that there is no registration of the next job (# 1825), it is determined whether the status is "drawing completion wait"(# 1832). "Waiting for drawing completion"
In this case, it is determined whether or not "drawing is completed"(# 1833). If it is not “drawing end”, this processing ends. If it is "drawing end", the job identification information is drawn on the slip sheet (# 1834). Next, the status is set to "printing slip sheet"(# 1835). Thereafter, the present process ends.

On the other hand, if it is not “Waiting for drawing end”, (♯
1832), and it is determined whether or not “insertion sheet is being printed” (# 1836). If it is not "printing slip sheet", the process is terminated. If it is "printing slip sheet",
It is determined whether or not “insertion sheet printing is completed” (# 1837).

If it is not "End of interleaf printing", the present process is ended. If "insertion sheet printing is completed", printing of the next job is started (# 1838). Next, since one job is completed, the status is set to printing (the next job can be reserved) (# 1839), and the process is thereafter terminated.

Although the case where the job identification information is printed on the surface of the slip sheet in the case of the face-up system has been described as an example, the present invention is not limited to this. It goes without saying that the present invention is more preferably applied to the case where job identification information is printed on the reverse side of the interleaving paper inverted at 600.

FIG. 22 is an explanatory view showing the form of the paper discharged from the paper discharge port of the copying machine. FIG. 22 shows the paper group 80 of each job discharged by the face-down method.
2, a state in which the slip sheet 801 is discharged between jobs is viewed from above. Insert 8
01 is an example of the content of the job identification information 803, “J
OB No. “003 Complete” is printed on the back side of the slip sheet inverted by the re-feed unit 600. The front side, which is the printing surface of the sheet group 802 of each job, is discharged downward, so that the operator cannot visually recognize it from above. However, since the job identification information 803 of the slip sheet 801 is discharged upward, the operator can see from above. It can be easily recognized.

[Brief description of the drawings]

FIG. 1 is a front sectional view showing the entire configuration of a copying machine according to the present embodiment.

FIG. 2 is a block diagram showing a configuration of a control unit of the copying machine according to the present embodiment.

FIG. 3 is a block diagram illustrating a configuration of a control unit of the copying machine according to the present embodiment.

FIG. 4 is a block diagram of an image signal processing unit of the copying machine according to the embodiment.

FIG. 5 is a block diagram showing a configuration of a memory unit according to the present embodiment.

FIG. 6 is an explanatory diagram of a management table showing a relationship between a job and a code memory according to the present embodiment.

FIG. 7 is a diagram showing a schematic sequence of a document reading operation according to the present embodiment.

FIG. 8 is a diagram showing a schematic sequence of a printing operation according to the present embodiment.

FIG. 9 is a main flowchart of a program executed by CPU 101 according to the present embodiment.

FIG. 10 is a main flowchart of a program executed by CPU 104 according to the present embodiment.

FIG. 11 is a main flowchart of a program executed by CPU 105 according to the present embodiment.

FIG. 12 is a main flowchart of a program executed by CPU 106 according to the present embodiment.

FIG. 13 is a plan view of an operation panel of the copying machine according to the present embodiment.

FIG. 14 is an explanatory diagram of screen control of the operation panel of the copying machine according to the present embodiment.

FIG. 15 is an explanatory diagram of screen control of the operation panel of the copying machine according to the present embodiment.

FIG. 16 is an explanatory diagram of screen control of the operation panel of the copying machine according to the present embodiment.

FIG. 17 is a flowchart showing a procedure of a slip sheet processing according to the present embodiment.

FIG. 18 is a flowchart illustrating a procedure of a slip sheet process according to the present embodiment.

FIG. 19 is a flowchart showing a procedure of a slip sheet processing according to the present embodiment.

FIG. 20 is a flowchart illustrating a procedure of a slip sheet process according to the present embodiment.

FIG. 21 is a flowchart showing a procedure of a slip sheet processing according to the present embodiment.

FIG. 22 is an explanatory diagram illustrating a form of a sheet discharged from a sheet discharge port of the copying machine according to the present embodiment.

[Description of Signs] 30 Memory unit section 40 Print processing section 100 Control section IR image reader PRT page printer

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields investigated (Int. Cl. ⁷ , DB name) G03G 21/00 370-540 B41J 29/00-29/70 H04N 1/00-1/00 108

Claims (1)

(57) [Claims] 1. An image forming means for forming job data as an image on a sheet, and a face-down discharging means for discharging the sheet on which the image is formed by the image forming means with the surface on which the image is formed downward. , an image forming apparatus including a control means for controlling to discharge Inserts for each delimiter of a job, and actuates the imaging means so as to print job identification information to the Inserts, the Job identification information is printed
An image forming apparatus comprising that you discharge the Inserts a the side facing up.