JP2007225816A - Image forming apparatus and computer program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively use functions, such as automatic paper selection and automatic magnification selection, even in the case of the special width of rolled paper. <P>SOLUTION: The setting of irregular paper to regular paper is started using a rolled-paper size setting keys (S1). By pressing the setting keys, paper feed stage assigned to the 440 mm rolled paper is allowed to be set by pressing numeric keypads (S2), and the paper feed stage is determined by pressing a #key (S3). Further, the width of the rolled paper (in this case, 440(mm)) is set by the numeric keypads (S4) and the width of the rolled paper is determined by pressing the #key (S5). Further, the subscanning length of a regular widthwise size and the subscanning length of a regular lengthwise size are input (S6 and S8). Thereby, the regular widthwise size (440 mm×297 mm) and regular lengthwise size (440 mm×594 mm) can be registered as regular sizes for the 440-mm rolled paper (S7 and S9). <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an image forming apparatus having a plurality of roll paper supply stages and a computer program executed by a computer of the image forming apparatus.

  In recent years, an image forming apparatus has rapidly switched from an analog image forming apparatus to a digital image forming apparatus, and office machines have almost become digital image forming apparatuses, and printers and the like have also been integrated. Digitization is also progressing in fields that require wide copying, such as drawings, and the functions installed in office machines are also installed in wide machines, and the number of functions is increasing. Many of the target manuscripts to be copied on office machines require general productivity, and high productivity is required in addition to the image quality of copying. Furthermore, the actual situation is that it is more sophisticated than the popular tier machines.

  In wide-width machines, there are many cases where the copy manuscript is a large drawing, and roll paper is also diverse. There are also papers with a width of 440 mm that are slightly wider than A3 width (420 mm), such as agricultural standards. However, since it is not a general roll paper width, the usage method is considerably restricted, and the usage method is limited. Generally, it is usually input as an irregular size and used in a restricted state.

  For example, the inventions described in Patent Documents 1 to 3 are known as those corresponding to originals having an irregular size. Among these, in the invention described in Patent Document 1, when changing the detected irregular document, the screen changes when the key is pressed, the document size is set by pressing the size to be changed, and the image area is set on this screen. If you want to do this, press the “image area setting” key, enter a numerical value and press the “setting” key, and the screen will be set. Is B4T, and the standard size can be used with B4Y.

  In the invention described in Patent Document 2, the image forming apparatus reads an image of a document with a scanner and records it with a plotter. When the roll paper on which the image is recorded is cut into a predetermined fixed size, various width sizes of the plotter are used. One roll paper is automatically selected from a plurality of width-size roll papers in a paper feed tray for storing a long roll paper, and the selected roll is rotated 90 degrees or 270 degrees. In this cutting, the image forming apparatus detects that the roll paper is shorter when the sub-scanning length of the cut paper is shorter than the minimum transport length of the roll paper from the paper feed tray. Even when the minimum transport length is less than the short dimension of the roll paper, the roll paper suitable for the original image can be automatically selected without the user being aware of so In which was to so that.

Further, the invention described in Patent Document 3 has one or more roll paper feeding means and a cutter for cutting the roll paper, and a standard size cut mode for cutting the roll paper into a standard size length, Means for detecting the width and length of a document in a copying machine equipped with means such as a sync cut mode for cutting the roll paper to a length corresponding to the length and the variable magnification, and capable of copying image information of the document at an arbitrary magnification Means, a means for detecting the width and length of the paper, a means for giving and operating a required command, and a control means having an automatic paper selection mode for feeding paper having a width corresponding to the document width and the magnification. In the automatic paper selection mode, both the regular size cut mode and the synchro cut mode are switched.
JP 2005-007694 A JP 2000-103536 A Japanese Patent No. 2529684

  In wide-width machines, there are many cases where a copy is large, such as a drawing. There is also a paper having a width of 440 mm, which is slightly wider than A3 width (420 mm), such as agricultural and forestry standards, and is frequently used in this field. However, normally speaking, the standard size is A row (A4, A3, A2, A1, A0) or B row (B4, B3, B2, B1, B0). It is handled with limited usage, and writing is written at the maximum size. In this case, the roll paper frequently used in the field cannot use the machine as a sufficient function, and it is difficult to say that the machine performance is sufficiently exhibited. Moreover, there are roll papers with various widths depending on the use of the roll paper. Naturally, roll papers with such various widths could not be handled.

  Accordingly, an object of the present invention is to enable functions such as automatic paper selection and automatic magnification selection to be used effectively even with the special roll paper width as described above.

  In order to solve the above problem, the first means is an image forming apparatus that has a plurality of roll paper supply stages and forms an image on the roll paper supplied from one of the plurality of roll paper supply stages. A selection unit for selecting a paper feed stage of an optimum size based on the set document size, a width setting unit for inputting and setting the width of the roll paper to be used, and a width set by the width setting unit. It is characterized by comprising display means for displaying dimensions and control means for using the roll paper width set by the width setting means as a standard paper size.

  The second means comprises registration means for registering the standard paper size when the roll paper width set by the width setting means is used as the standard paper size in the first means. .

  The third means is characterized in that in the first or second means, sub-scanning length setting means for setting a sub-scanning length corresponding to the standard paper size selected by the selecting means is provided.

  The fourth means is characterized in that, in the third means, the sub-scanning length set by the sub-scanning length setting means is either a vertical standard size or a horizontal standard size.

  The fifth means further comprises a detection means for detecting the main scanning length and the sub-scanning length of the document in any one of the first to fourth means, and a scaling factor setting means for setting a scaling factor of the image, The control means is a standard paper having an arbitrary width set by the width setting means based on the main scanning length and sub-scanning length of the document detected by the detecting means and the variable magnification set by the variable magnification setting means. The paper size is selected from the sizes.

  The sixth means further comprises a detection means for detecting the main scanning length and the sub-scanning length of the document and a scaling ratio setting means for setting a scaling ratio of the image in any one of the first to fourth means, When the control unit sets an optimum scaling factor from the main scanning length and sub-scanning of the document detected by the detecting unit and an arbitrarily set standard paper size, the scaling factor from the arbitrarily set standard paper size It is characterized by selecting.

  The seventh means is a computer program loaded on a computer and handling an irregular roll paper as a regular roll paper to form an image, and a procedure for setting one paper feed stage from a plurality of roll paper supply stages, It comprises a procedure for setting the roll paper width of roll paper, a procedure for setting a standard horizontal size, and a procedure for setting a standard vertical size.

  In the embodiment described later, the roll paper supply stage is the first to third paper feed rolls 110, 120, 130, the selection means is the automatic paper selection key 532 and the CPU 67, and the width setting means is the width setting key 5321, 5322 and 5323, the display means is the key setting unit 530, the control means is the CPU 67, the registration means is the roll paper size setting key 535, the sub-scanning length setting means is the numeric keypad 522, and the magnification setting means is the magnification key 533. And CPU 67, respectively.

  According to the present invention, the roll paper of the paper feed stage of the size selected based on the set document size is set to the standard size according to the input width of the roll paper and fed. Even with the roll paper width, functions such as automatic paper selection and automatic magnification selection can be used effectively.

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

  FIG. 1 is a diagram illustrating a schematic configuration of an image forming apparatus according to an embodiment of the present invention.

  In FIG. 1, the image forming apparatus according to the present embodiment basically includes a paper feed unit 100, an image forming unit 200, a paper discharge unit 300, and a reading unit 400. The paper feed unit 100 includes three roll papers of a first paper feed roll 110, a second paper feed roll 120, and a third paper feed roll 130, and an image forming unit from these paper feed rolls 110, 120, and 130. Mainly composed of a plurality of transport rollers 141 to 147 transported to 300 and a manual feed tray 149. Of the transport rollers 141 to 147, 142, 144, and 146 function as paper feed rollers, and the other rollers function as intermediate transport rollers.

  The image forming unit 200 includes a writing optical system (writing unit) (not shown) that performs laser writing, a photoreceptor 210, a charging unit (not shown) disposed on the outer periphery of the photoreceptor 210, a developing unit, a cleaning unit, a charge eliminating unit, and a transfer unit 220. And a fixing unit 230. The paper discharge unit 300 includes a conveyance roller 310, a paper discharge roller 320, and a paper discharge tray 330. The transport roller 310 is provided at the rear stage of the fixing unit 230, the paper discharge roller 320 is provided at the rear stage of the transport roller 310, and the paper discharge table 330 is provided at the rear stage of the paper discharge roller 310.

  The reading unit 400 is shown below a document reading window (not shown) provided in the document table 410, document conveyance rollers 421, 422, 423, sensors 431, 432, document discharge table 441, and document conveyance path 451. Mainly composed of a scanner (reading optical system) that does not.

  In general, in the image forming apparatus configured as described above, when a mode is set in the operation unit 500 provided on the upper side of the document reading unit 400 and then the document is set on the document table 410, the document is conveyed. A sensor group 431 and 432 provided in the middle of the document transport path 451 detect the document size of the document to be read. The original size is determined by detecting the width of the original when the original is set and simultaneously detecting the sub-scanning length of the original while the original is being conveyed. When the document size is determined in this way, roll paper is fed from one of the first to third paper feed rolls 110, 120, and 130 depending on the document size or the set mode.

  The paper on the first paper feed roll 110 is fed by transport rollers 142, 141, 147, cut to a predetermined length by the first roll cutter 151 in the middle, and transported. Similarly, the paper is fed from the second paper feed roll 120 by the transport rollers 144, 143, 141, and 147, cut to a predetermined length by the first roll cutter 151 and transported. The third paper feed roll 130 is fed by transport rollers 146, 145, 141, and 147, cut to a predetermined length by the second roll cutter 152 in the middle, and transported. The sheet that has been cut and conveyed is conveyed to a position where it abuts against the photoreceptor 210. Image data read by a scanner that reads a document image is written on the photoreceptor 210 by a laser of a writing unit, and a latent image formed on the photoreceptor 210 passes through the developing unit to form a toner image. Then, the toner image on the photoconductor 210 is transferred while the paper is conveyed at the same speed as the rotation of the photoconductor 210. Thereafter, the fixing unit 230 fixes the image on the sheet, and the sheet discharge port switching unit 340 discharges the sheet by the linear sheet discharge 351 or the reverse sheet discharge 352.

  FIG. 2 is a front view showing the operation unit 500. In the figure, an operation unit 500 carries a liquid crystal touch panel 520, a numeric keypad 522, a clear / stop key 526, a print key 525, a mode clear key 524, an initial setting key 523 for setting a setting item used by the user, and a copy operation. An original stop key 527 for stopping the original being performed and a paper stop key 528 for stopping the paper being conveyed as a copy operation are provided. As shown in FIG. 3, the liquid crystal touch panel 520 includes a message display unit 521 and a key setting unit 530. The message display unit 521 displays information indicating whether copying is possible, magnification, the number of copies, the number of copies, and the like. The key setting unit 530 includes a density setting key group (automatic density key 531, manual keys (red, light) 5311, 5312), paper selection key group (automatic paper selection key 532, width setting keys 5321, 5322, 5323), A scaling key 533, a sync cut key 534, and a roll paper size setting key 535 are provided.

  FIG. 4 is a sub-screen displayed when the magnification key 533 is pressed in FIG. On this sub-screen, selectable scaling factors are displayed, and the scaling factors are input by touching this display unit.

  FIG. 5 is a block diagram of a control device of the image forming apparatus according to the present embodiment. The controller is connected to a distributed controller such as an image processing unit (IPU) 52, an operation controller 53, an I / O board 56, a scanner controller 57, and a paper folding controller 58 with a main controller (MCU) 51 as the center. It has a configuration. The MCU 51 controls the entire image forming apparatus. The operation control unit 51 corresponds to the control circuit of the operation unit 500 having the above-described hardware configuration, and performs display for the operator and function setting input control from the operator. The scanner control unit 57 controls the image reading unit 400 described above. The IPU 52 performs control for writing an original image into the image memory, control for forming an image from the image memory, and the like. Each distributed control unit and the MCU 51 exchange machine states and operation commands as necessary. A main motor and various clutches necessary for paper conveyance and the like are also connected to the I / O board 56 and controlled by the MCU 51. The operation control unit 53 is connected to the liquid crystal display unit 54 and the key input unit 55, and the scanner control unit 57 is connected to the document size detection sensor 59 (corresponding to the sensor groups 431 and 432 described above).

  The operations from image reading to latent image formation in this embodiment will be described with reference to FIG. The latent image is a potential distribution generated by converting an image into optical information and irradiating it on the surface of the photosensitive member 210 as touched before. The scanner reads a document image with a CCD image sensor while reading the document set on the document table 410 (reads the document using a so-called sheet-through method), and converts the image on the document into an electrical signal. Writing is a portion in which a document image converted into an electric signal and processed is written as a condensed image on the photosensitive member 210 by an LED (semiconductor laser). The deflected LED light is scanned in a direction (main scanning direction) perpendicular to the direction in which the photosensitive member 210 rotates, and recording is performed in line units of the image signal output from the image data selection unit 7B of the image processing unit described later. . An image (electrostatic latent image) is formed on the surface of the photoreceptor 210 by repeating main scanning at a predetermined cycle corresponding to the rotational speed and recording density of the photoreceptor 210.

  As described above, the LED light output from the writing unit is applied to the photoconductor 210 of the image forming unit 200. Although not shown, a sensor (synchronization detection sensor) that generates a main scanning synchronization signal is disposed at a position irradiated by the LED head of the photoreceptor 210. Based on the main scanning synchronization signal output from the synchronization detection sensor, a control signal for controlling image recording start timing in the main scanning direction and inputting / outputting image signals described later is generated.

  FIG. 6 is a block diagram showing details of the image processing unit (IPU) 52. The IPU 52 is configured with the CPU 67 as the center, and a CCD 61, an A / D converter 62, a first image processing unit 63 that performs color separation and shading correction, a filter, scaling, and color data via the bus 60. A second image processing unit 64 that performs expansion, a third image processing unit 65 that performs image processing, writing control, and image path switching, an image memory controller (MSU) 66, a RAM 68, a ROM 69, and a writing unit 610 are connected. Yes. Reference numeral 611 denotes an APS (automatic power supply device).

  In the IPU 52 having such a configuration, the original surface is irradiated with light emitted from the exposure lamp, and reflected light from the original surface is imaged and received by the CCD image sensor 61 by an imaging lens (not shown). It is photoelectrically converted and converted into a digital signal by the A / D converter 62. The image signal converted into the digital signal is subjected to shading correction by the first image processing unit 63 and then subjected to filter correction, scaling data expansion, γ correction and the like by the second image processing unit 64. In the third image processing unit 65, the destination of the image signal, that is, the destination is switched to the image memory controller (MSU) 66 or the writing unit 610. As will be described later, the image memory controller 66 also includes an image memory for storing images.

  The image memory controller (MSU) 66 and the third image processing unit 65 are configured to be able to input and output image signals in both directions. Although not explicitly shown in FIG. 6, the image processing unit (IPU) 52 receives image data supplied from the outside (for example, from a data processing device such as a personal computer) in addition to the image data input from the reading unit 400. A function of selecting input / output of a plurality of data is also provided so that data to be output can be processed.

  The CPU 67 sets the image memory controller 66 and the like, and controls the reading unit 400 and the writing unit 610. The ROM 69 stores programs and data executed by the CPU 67. The RAM 68 is used as a work area of the CPU 67. Store dynamic data. Further, the CPU 67 writes and reads data in an image memory 83 shown in FIG. 8 described later via the image memory controller 66.

  FIG. 7 is a block diagram showing the internal structure of the third image processing unit 65 in FIG. The third image processing unit 65 mainly includes a scanner mask unit 71, a color conversion unit 72, a color erasing unit 73, a bit inversion unit 74, a print composition unit 75, a print core unit 76, and an MSU composition unit 79. Yes. The third image processing unit 65 configured as described above masks the area with the scanner mask unit 71 when the image data processed by the second image processing unit 64 is read, and performs color conversion according to the mode. Is necessary, the color conversion unit 72 performs color conversion processing, the color erasure unit 73 performs color erasure processing, the image inversion unit 74 performs image inversion processing, and the print composition unit 75 performs print composition of pages, dates, special characters, and the like. The image data is unconditionally stored in the image memory controller 66. The print core unit 76 creates a page for page printing, extracts a character code such as a stamp character, creates a print, and generates print image data. ROM 77 and RAM 78 are memories involved in print control. Further, the image data selection unit 7B outputs the image signals processed by the respective units indicated by the reference numerals 71 to 75 to the image quality core unit 7C through, or the image data stored in the image memory controller 66 as the image quality. It is selected whether to output to the core unit 7C or to output to the image quality core 7B image data obtained by synthesizing the image from the image memory controller 66 with the image data subjected to image processing.

  FIG. 8 is a block diagram showing details of the image memory controller 66 in FIG. In the figure, an image memory controller 66 includes an image memory (DRAM) 83 including a bank A84 and a bank B85, which are primary image data storage memories, and a secondary compression / decompression unit 86. A hard disk drive (HDD) 87 that is a large-capacity memory, and a scaling unit 88 that changes the image magnification of the expanded registered image. The CPU 67 sets control data for each block.

  That is, the image memory controller 66 includes primary and secondary storage devices (83, 87). The primary storage device 83 is substantially synchronized with the data transfer speed required for inputting / outputting image data when writing data to the specified area of the memory or reading data from the specified area of the memory at the time of image output. In this embodiment, a memory capable of high-speed access, such as a DRAM, is used so that it can be performed. Further, the primary storage device 83 is divided into a plurality of areas according to the size of the image data to be processed (in this example, bank A84, bank B85), and a configuration (memory controller and Interface section).

  The secondary storage device 87 is a large-capacity memory for storing data for combining and sorting input images, and an HDD is used as described above. Similarly to the primary storage device 83, the secondary storage device 87 can write / read data substantially in synchronism with the data transfer rate required at the time of image input / output. The primary compression unit 81 compresses the input image data and transfers it to the primary storage unit 83, and the primary decompression unit 82 decompresses the image data from the primary storage unit 83 and sends it to the scaling unit 88. Forward. The secondary compression / decompression unit 85 compresses the data in the primary storage unit 83, transfers it to the secondary storage unit 87, decompresses the data from the secondary storage unit 87, and transfers it to the primary storage unit 83.

  For example, the image memory controller 66 operates as follows.

[1] Image input (save to image memory)
In FIG. 8, the image data 8V1 processed by the plurality of image processing units 71 to 75 in the preceding stage is unconditionally supplied to the MSU combining unit 79, and the data already stored in the image memory (83, 87). Perform synthesis. The image data 8V2 synthesized by the MSU synthesis unit 79 is compressed by the primary compression unit 81 / decompression unit 82, and the compressed data is written to the primary storage device 83 (8V3), and at the same time, the secondary compression / decompression is performed. Sent to the unit 86 (8V4) and further compressed (8V5). The data 8V6 selected by the image data selection unit 7B is transferred to the subsequent stage.

[2] Image output (reading from image memory)
FIG. 9 is a block diagram showing an operation at the time of reading from the image memory (83, 87). The image memory controller 66 shows a data flow when image data stored in the primary storage device 83 is read at the time of image output. When the image to be output is stored in the primary storage device 83, it is read from the primary storage device 83 (9V3), and the primary compression unit 81 / decompression unit 82 stores the image data in the primary storage device 83. The decompression is performed, and the decompressed data (9V4) or the data after image composition of the decompressed data and the input data is output. At that time, the scaling unit 88 can change the magnification of the expanded image. The MSU synthesizing unit 79 synthesizes the image data (9V5) of the primary storage device 83 and the input data 8V1 (has a phase adjustment function of the image data), and selects the output destination of the synthesized image data (9V6) (Image output, write back to the primary storage device 83, and simultaneous output to both output destinations) are performed. When the image to be output is not stored in the primary storage device 83, the output target image data (9V1) stored in the HDD 87 is expanded by the secondary compression / decompression unit 86, and the decompressed data ( 9V2) is written to the primary storage device 83 and then transferred to the primary decompression unit 82 (9V3). The above-described image output operation is performed.

  In the above-described print mode, an arbitrary stamp image can be registered as required by the user. When the stamp image registration mode is entered, the image from the scanner is registered in the HDD 87 described above, and when the user selects a stamp image later, the stamp image data is read from the HDD 87 and sent to the MSU combining unit 79. Are combined with the original image. The data 9V6 selected by the image data selection unit 7B is transferred to the subsequent stage.

In the image forming apparatus configured as described above, image formation is performed as follows.
Originally, it is not necessary to store the image data in the image memory 83 when the number of image formations is one for one original image, but it is necessary to scan each time when the required number of image formations is plural. In view of the fact that there is no paper jam and there is no need to read the original again even if a transfer paper jam occurs, the scanned and read image is unconditionally stored in the image memory 83 and the HDD 87. .

  The standard width obtained from the width of the roll paper of A series, such as 841 mm, 594 mm, 420 mm, 297 mm, and 210 mm, is fixed, but when using roll paper that is not of this general roll paper width In the conventional case, there is only a method of inputting a paper size as an irregular size and copying. For this reason, the irregular size is not subject to automatic paper selection or cannot be combined with other modes, so that the operability is poor and the function cannot be fully utilized. Therefore, if roll paper having a special width can be handled as a standard, the functions related to the standard paper can be fully utilized. In order to handle it as a standard size, a means for registering as a standard paper is required. In this embodiment, the roll paper size setting key 535 shown in FIG.

  FIG. 10 is a flowchart showing a processing procedure when handling a roll paper having an irregular roll paper width as a standard paper. Hereinafter, description will be given with reference to this flowchart. For example, a standard size of A3 landscape paper and A2 portrait paper can be obtained from a roll paper having a width of 420 mm. When registering a roll paper having a length of 440 mm slightly longer than 420 mm as the standard paper, Using the paper size setting key 535, the setting of the non-standard paper to the standard paper is started (step S1). By depressing this setting key 535, it is first set to which paper feed stage the roll paper of 440 mm is assigned by using the numeric keypad 522 (step S2), and by depressing the # key, the paper feed stage is determined ( Step S3). The paper feed stage here is one of the paper feed rolls 110, 120, and 130. Further, the width of the roll paper, in this case 440 (mm), is set with the numeric keypad 522 (step S4), and the roll paper width is determined by pressing the # key (step S5). Further, by inputting the sub-scan length of the standard horizontal size and the sub-scan length of the standard vertical size with the numeric keypad 522 (steps S6 and S8), in the case of 440 mm roll paper, the standard horizontal size (440 mm × 297 mm), the standard vertical size ( 440 mm × 594 mm) can be registered as a standard size (steps S7 and S9). The registered standard size is also displayed on the operation unit 520. This display state corresponds to the size indications 5321a and 5321b of 297 mm and 594 mm in the frame display having a length of 440 mm in FIG. Similarly, when the length is 420 mm, A3Y and A2T size displays 5322a and 5322b are displayed, and when the length is 841 mm, A1Y and A0T size displays 5323a and 5323b are displayed.

  With this setting, when a 440 mm original is detected as the original size, a 440 mm roll is selected in the same manner as normal automatic paper selection, and a 440 mm roll is detected when a standard size original set by the user is detected. Paper can be selected and copied as standard paper (440 mm × 297 mm, 440 mm × 594 mm). Since this standard size is not common, the display is in mm, but it can be handled in the same way as the standard size of other A series (see FIG. 3).

As described above, according to this embodiment,
1) Since a standard size can be set by inputting a width dimension for a roll paper having an arbitrary roll paper width, the function of the image forming apparatus can be used effectively.
2) The sub-scanning length can be set as a standard paper size corresponding to the set arbitrary roll paper width, and can be used as a standard size for roll paper having an arbitrary roll paper width.
3) In the automatic paper selection function for selecting the optimum paper based on the detected main scanning length and sub-scanning length of the original and the set magnification, an arbitrarily set standard paper size is the target for automatic paper selection. It is possible to select paper by automatic paper selection even for roll paper of an arbitrary roll paper width, and it is possible to improve productivity and operability.
4) Since an arbitrarily set standard paper size is the target of automatic magnification selection, it is possible to select magnification for automatic roll selection even for roll paper of any roll paper width, improving productivity and operability. Can be achieved.
There are effects such as.

1 is a diagram illustrating a schematic configuration of an image forming apparatus according to an embodiment of the present invention. It is a front view of the operation part of FIG. FIG. 3 is an enlarged front view of a liquid crystal touch panel of the operation unit in FIG. 2. FIG. 4 is a front view showing a display state of a sub-screen displayed when a scaling key is pressed in FIG. 3. 2 is a block diagram illustrating a control device of the image forming apparatus according to the present exemplary embodiment. FIG. FIG. 6 is a block diagram illustrating details of an image processing unit (IPU) in FIG. 5. It is a block diagram which shows the internal structure of the 3rd image process part in FIG. It is a block diagram which shows the detail of the image memory controller 66 in FIG. It is a block diagram which shows the operation | movement at the time of the reading from an image memory. It is a flowchart which shows the process sequence in the case of handling the roll paper of an indefinite form roll paper width as a regular paper.

Explanation of symbols

67 CPU
DESCRIPTION OF SYMBOLS 110 1st paper feed roll 120 2nd paper feed roll 130 3rd paper feed roll 522 Ten key 530 Key setting part 532 Automatic paper selection key 533 Scaling key 535 Roll paper size setting key 5321, 5322, 5323 Width setting key

Claims (7)

An image forming apparatus having a plurality of roll paper supply stages and forming an image on roll paper supplied from one of the plurality of roll paper supply stages,
Automatic paper source selection means for selecting the optimal paper source based on the set document size,
Enter the width of the roll paper to be used and set the width setting means,
Display means for displaying the width dimension set by the width setting means;
Control means for using the roll paper width set by the width setting means as a standard paper size;
An image forming apparatus comprising:   2. The image forming apparatus according to claim 1, further comprising a registration unit configured to register the standard paper size when the roll paper width set by the width setting unit is used as the standard paper size.   3. The image forming apparatus according to claim 1, further comprising sub-scanning length setting means for setting a sub-scanning length corresponding to the standard paper size selected by the selection means.   4. The image forming apparatus according to claim 3, wherein the sub-scanning length set by the sub-scanning length setting unit is either a vertical standard size or a horizontal standard size. Detecting means for detecting the main scanning length and the sub-scanning length of the document;
A scaling factor setting means for setting a scaling factor of the image;
Further comprising
The control means is a standard paper having an arbitrary width set by the width setting means based on the main scanning length and sub-scanning length of the document detected by the detecting means and the variable magnification set by the variable magnification setting means. 5. The image forming apparatus according to claim 1, wherein a paper size is selected from the sizes. Detecting means for detecting the main scanning length and the sub-scanning length of the document;
A scaling factor setting means for setting a scaling factor of the image;
Further comprising
When the control unit sets an optimum scaling factor from the main scanning length and sub-scanning of the document detected by the detecting unit and an arbitrarily set standard paper size, the scaling factor from the arbitrarily set standard paper size The image forming apparatus according to claim 1, wherein the image forming apparatus is selected. In a computer program that is loaded on a computer and forms an image by handling irregular roll paper as regular roll paper,
A procedure for setting one paper feed stage from a plurality of roll paper supply stages;
A procedure for setting a roll paper width of the roll paper;
To set the standard horizontal size,
To set the standard vertical size,
A computer program comprising:

Images