JP2012042673A - Image forming device and image transfer position control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress a change in the image quality of same images, which are designated to be printed into a plurality of copies, of each copy caused by a relative position difference among image holding areas holding the images.SOLUTION: There is provided a selection key 22A on a UI22 for an operator to select either an efficiency priority mode or an image quality priority mode. In the case where an intermediate transfer belt 36 is designated for a print job printing 8 pages×3 copies, in the image quality priority mode, an image of a first page of a second copy skips over areas R until the image of the first page of the second copy is disposed in the same area R as the area R of an image of a first page of a first copy based on a cycle of the intermediate transfer belt 36. Subsequently, a third copy is printed similarly to the second copy as follows: an image of a first page of the third copy is transferred in the same area R as the area R in which the image of the first page of the second copy is transferred by skipping over two areas R from the area R in which an image of an eighth page of the second copy; and images are transferred on all pages, a first page through the eighth page, without any space therebetween. In comparison between the efficiency priority mode and the image quality priority mode, an image transfer in the efficiency priority mode completes faster than that in the image quality priority mode by four areas R of the intermediate transfer belt 36. On the other hand, the image quality priority mode has an advantage that the same page of each copy is transferred in the same area R.

Description

  The present invention relates to an image forming apparatus and an image transfer position control program.

    For example, a plurality of images recorded on the photosensitive drum are transferred side by side on the intermediate transfer belt (primary transfer), and then each image is transferred in units of pages (secondary transfer) to perform printing. In the process, images of a plurality of pages and a plurality of copies are transferred on the intermediate belt in an orderly manner at the same interval along the conveyance direction of the intermediate transfer belt. For this reason, when printing a plurality of copies, the physical area on the intermediate transfer belt to which the image of the same page of each portion is transferred may be different.

  Japanese Patent Application Laid-Open No. H10-228667 describes that the density of unevenness due to the phase difference of the photosensitive drum is reduced and the toner replenishment amount is stabilized by keeping the patch image forming position of the photosensitive drum constant.

  Further, Patent Document 2 describes that by providing a plurality of reference points on the intermediate transfer member, at least one rotation of the intermediate transfer member is not required to synchronize the reference points after the slow transfer, thereby increasing productivity. ing.

JP 2006-162745 A JP 2005-215515 A

  The present invention relates to an image forming apparatus and an image transfer position control capable of suppressing a change in image quality due to a difference in relative position of an image holding area for holding the image of the same image of each part in an image in which a plurality of copies are designated. The purpose is to get a program.

  According to the first aspect of the present invention, one side of a recording sheet on which an image is recorded is defined as one page, and an image holding area for a plurality of pages in which images are sequentially held at a predetermined primary transfer position is provided. An image holding body in which the image holding area circulates around the primary transfer position at a constant period, and an image held in each image holding area of the image holding body from the primary transfer position by a predetermined secondary transfer position. Is set in advance when the transfer means for transferring to a recording sheet downstream from the image carrier, the recognition means for recognizing the period of a specific period object, and the image information for recording the image covers a plurality of pages. The first allocation means for allocating the image of each page to the image holding area of the image carrier in accordance with the first allocation condition, and the reference allocation condition when there are a plurality of pieces of image information for recording the image. According to the second allocation condition instead of Based on the period recognized in serial recognition means, in the image holding member, it has a second assignment means for assigning the first image of each part to the same image holding region.

  According to a second aspect of the present invention, in the first aspect of the invention, the first assignment condition is transferred at a plurality of divisions without skipping the image holding area on the image holding body. It is an efficiency priority condition, and the second allocation condition is that image quality priority is transferred by skipping the image holding area on the image holding body so that the same page becomes the same image holding area with a plurality of divisions. It is a condition.

  According to a third aspect of the present invention, in the first or second aspect of the invention, the specific periodic object is an image holding body that revolves around the primary transfer position repeatedly, and the image holding body is The time taken for one round is one cycle.

  According to a fourth aspect of the present invention, in the first or second aspect of the present invention, the density sensor that detects the density of the image holding surface of the image holding body along the circumferential direction of the image holding body. Further, the recognition target periodicity information is density distribution information when the density sensor detects a reference image provided along a circulation direction on the image holding body, and the density distribution information is analyzed. The period obtained in step 1 is defined as one period.

  The invention according to claim 5 further comprises selection means for selecting whether or not to function the second assigning means in the invention according to any one of claims 1 to 4.

According to a sixth aspect of the present invention, one surface of a recording sheet on which an image is recorded is defined as one page, and an image holding area for a plurality of pages in which images are sequentially held at a predetermined primary transfer position is provided. The image holding area in which the image holding area circulates around the primary transfer position at a constant cycle is used as a target for transferring the image held in each image holding area from the primary transfer position within a predetermined secondary transfer. An image transfer position control program for transferring from a position to a recording sheet on the downstream side of the image carrier, wherein the computer has a plurality of pieces of image information for recognizing a period of a specific period object and recording an image. The image of each page is assigned to the image holding area of the image carrier in accordance with the preset assignment condition when the page is extended, and the image information for recording the image is based on the recognized period when there are a plurality of copies. On the image carrier Assigned to the same image holding region leading image of each part takes,
This is an image transfer position control program that executes this.

  According to the first and sixth aspects of the invention, the image quality of the same image of each part in the image in which a plurality of copies are specified is suppressed from a change in image quality due to the difference in the relative position of the image holding area that holds the image. Can do.

  According to the second aspect of the present invention, it is possible to select efficiency priority and image quality priority based on the number of copies to be instructed and the number of pages.

  According to the third aspect of the present invention, it is possible to suppress a change in image quality due to a physical density difference of the image carrier.

  According to the fourth aspect of the present invention, it is possible to efficiently use the image holding area of the image holding body while suppressing a change in image quality as compared with the case where this configuration is not provided.

  According to the invention described in claim 5, it is possible to select either work efficiency or processing capacity.

(A) is an overall external view of a basic business printing apparatus according to the present embodiment, (B) is an enlarged view of an image forming unit in the basic business printing apparatus, and (C) is an enlarged view of a transfer unit in the image forming unit. . It is a block diagram which shows the hardware constitutions of the main control part mounted in the basic | foundation business printing apparatus which concerns on this Embodiment. FIG. 6 is a front view illustrating a layout state of an image transferred onto an intermediate transfer belt in an efficiency priority mode according to the present embodiment. FIG. 10 is a front view illustrating a state of a layout of an image transferred onto an intermediate transfer belt in an image quality priority mode according to the present embodiment. FIG. 5A is a functional block diagram for controlling the assignment of an image to the intermediate transfer belt 36 based on the efficiency priority mode / image quality priority mode in the main control unit, and FIG. 5B is an image forming mode designation in FIG. It is a table chart for determining the designation information in a section. 5 is a flowchart showing an image layout control routine for laying out an image for each page on the intermediate transfer belt according to the present embodiment. FIG. 10 is a front view showing a state of an image layout showing a comparison between a case where the peripheral length of the intermediate transfer belt is one period and a period based on the density distribution is one period according to a modification.

  FIG. 1A shows a basic business printing apparatus 10 according to the present embodiment. The basic business printing apparatus 10 is roughly classified and includes an image forming unit 12, a sheet storage unit 14, and a post-processing unit 16.

  The image forming unit 12 is provided with a main control unit 20 that controls the entire core business printing apparatus 10 on the upper surface of the casing 18. The main control unit 20 includes a touch panel UI (user interface) 22.

  As shown in FIG. 1B, the image forming unit 12 is covered with a casing 18, and the light scanning unit 24 for each color scans a light beam emitted according to image information from the main control unit 20. A plurality of photosensitive drums 26 for each of a plurality of colors (YMCK) on which a so-called electrostatic latent image is formed by receiving a light beam scanned by the optical scanning unit 24, and an electrostatic latent image on the photosensitive drum 26. A developing unit 28 that develops by supplying a developer such as toner, a transfer unit 32 that transfers an image visualized by the development to the recording paper 30, and a fixing that fixes the transferred image on the recording paper 3 Part 34.

  Hereinafter, the above series of steps is referred to as “general image forming processing”. In the following, “image forming process” may be referred to as “printing” as necessary, but these are synonymous in a broad sense. In a narrow sense, “image formation” refers to visualizing image information in the image forming unit 12, and “printing” refers to the entire series of processing steps.

  The transfer unit 32 includes an intermediate transfer belt 36 (see FIG. 1C). The intermediate transfer belt 36 is wound around a plurality of rollers to form an inverted triangular peripheral circuit in the state shown in FIG. The base of the inverted triangular circuit (that is, the upper planar circuit) passes between the plurality of photosensitive drums 26 and the primary transfer roller 38 facing the photosensitive drums 26. It has become. The position where the photosensitive drum 26 and the primary transfer roller 28 are opposed to each other is a primary transfer portion, and images (4 images) of each color from each photosensitive drum 26 are included in the same region (chain line in FIG. 1C). (See R) Transferred (for monochrome printing, only one image).

  The recording paper 32 sent to the transfer unit of the image forming unit 12 having the above-described configuration is selectively taken out from a plurality of trays 40A and 40B provided in the paper storage unit 40. In other words, the plurality of trays 40A and 40B can accommodate recording sheets 50 of different sizes (there may be the same size), and can be received from the image forming unit 12 based on an instruction from the main control unit 20. One of the trays 40A and 40B is selected by the instruction, and for example, the trays 40A and 40B are sequentially taken out from the uppermost recording paper 32.

  The lower part of the image forming unit 12 is a sheet conveying unit 42 that conveys the recording sheet 30, and is opposed to the vertex of the inverted triangular circuit in the intermediate transfer belt 36 (that is, the lowest position in FIG. 1). Yes.

  At this apex position, a secondary transfer roller 44 is provided so as to sandwich the paper transport unit 42, and is a secondary transfer unit.

  The paper transport unit 42 takes out the recording paper 30 from the paper storage unit 40, passes through the secondary transfer unit, and sends it to the subsequent process, and passes through the secondary transfer unit on one side ( A reverse conveyance path for reversing the front and back surfaces of the recording paper 32 on which image formation (printing) has been performed on the front surface and conveying it again to the secondary transfer unit is provided.

  The post-processing unit 16 is also referred to as a finisher unit, for example, and performs bookbinding, binding, punching, folding, and other processing, and sorting processing in units of jobs and units.

  FIG. 2 shows a configuration of hardware resources for executing control by the main control unit 20. The main control unit 20 includes a main control unit 50. The main control unit 50 includes a CPU 52, a RAM 54, a ROM 56, an I / O (input / output unit) 58, and a bus 60 such as a data bus or a control bus for connecting them.

  Connected to the I / O 58 is a print control management unit 62 for controlling and managing each processing system such as a transport system in the basic business printing apparatus 10, a scanning exposure system for image formation, and a development system. ing.

  More specifically, a conveyance control unit 64, a scanning exposure control unit 66, a development control unit 68, a transfer control unit 70, and a fixing control unit 72 are connected to the print control management unit 62 to manage the control of each unit. .

  The print control management unit 62 may be configured to be directly connected to the bus 60 instead of the I / O 58.

  A UI (user interface) 22 is connected to the I / O 58. The UI 22 has a function of receiving an input instruction from the user and notifying the user of information related to image processing. Further, a hard disk 74 is connected to the I / O 58. The I / O 58 is connected to the communication line network 78 via the I / F 76.

  Here, the UI 22 is provided with a selection key 22A (see FIG. 3) for selecting whether to give priority to efficiency or image quality during image formation. The selection key 22A may be a so-called hard key provided separately from the touch panel screen of the UI 22, or may be a so-called soft key using a touch panel screen.

  This efficiency priority means that the image is arranged without a gap when the image for each page is transferred to the region R on the intermediate transfer belt 36. This arrangement is most efficient in using the intermediate transfer belt 36, and as a result, the printing processing speed is the fastest.

  On the other hand, image quality priority means that when an image for each page is transferred to the region R on the intermediate transfer belt 36, images of the same page of each part in the plurality of copies of the image are the same on the intermediate transfer belt 36. Transfer to region R.

  As the intermediate transfer belt 36 applied to the present embodiment, a molded product without a joint is applied (hereinafter, the absence of a joint may be referred to as “seamless”). Since the seamless intermediate transfer belt 36 has no joints, there are no untransferable areas, and the entire peripheral surface is efficiently used as an image holding surface. On the other hand, the seamless intermediate transfer belt 36 is inferior in the accuracy of the wall thickness compared to the intermediate transfer belt having a joint. It is known that unevenness of the wall thickness affects the density of the transferred image.

  However, this degree of influence cannot be determined by a sensitivity test such as visual inspection if the images are different, but in the case of the same image, if the transfer process is performed in a different region R, the density difference is also determined by a visual sensitivity test. May be noticeable.

  In other words, when the designated job is for a plurality of pages and a plurality of copies are printed, when the number of pages is not a multiple of the number of regions R on the peripheral surface of the intermediate transfer belt 36, The same image (same page) between different parts is transferred in different regions R.

  Therefore, in the present embodiment, the selection key 22A on the UI 22 allows the operator to select either the efficiency priority mode that prioritizes efficiency or the image quality priority mode that prioritizes image quality. In the setting (default), the image quality priority mode is set.

  Details of the efficiency priority mode and the image quality priority mode will be described below.

(Efficiency priority mode)
As shown in FIG. 3, when a print job of 8 pages × 3 copies is designated for the intermediate transfer belt 36, the region R (part, code The image is transferred to R). At this time, since the peripheral length (cycle) of the intermediate transfer belt 36 is five pages, the region R next to the region R to which the eighth page is transferred is different from the region R of the first page of the first copy. .

  In the efficiency priority mode, the first page image of the second copy is transferred to the region R adjacent to the eighth page of the first copy, and the image is transferred to the region R without any gap from the first page to the eighth page. Transcript. Subsequently, in the same way for the third copy, the image of the first page is transferred to the region R adjacent to the eighth page of the second copy, and the image is transferred from the first page to the eighth page to the region R without a gap. Transcript.

(Image quality priority mode)
As shown in FIG. 4, when a print job of 8 pages × 3 copies is designated for the intermediate transfer belt 36, there is no region R (part, code) from the first page to the eighth page of the first copy. The image is transferred to R). At this time, since the peripheral length (cycle) of the intermediate transfer belt 36 is five pages, the region R next to the region R to which the eighth page is transferred is different from the region R of the first page of the first copy. .

  In the image quality priority mode, the region R is skipped until the second page of the first page image becomes the same region R as the first page of the first copy based on the cycle of the intermediate transfer belt 36 (FIG. 4). (See the dashed line). In FIG. 4, when the two regions R are kicked, the first page of the first page image is transferred to the region R, and the second page of the first page image is transferred to the region R. The image is transferred to the region R without a gap until the eighth page. Subsequently, when the second region R is skipped from the region R to which the image of the second page of the eighth page is transferred, the third copy becomes the region R to which the image of the first page of the second copy is transferred, The third page of the first page image is transferred to the region R, and the image is transferred to the region R without any gap from the first page to the eighth page.

  Comparing the efficiency priority mode and the image quality priority mode, the transfer is completed earlier in the efficiency priority mode by the four regions R of the intermediate transfer belt 36. On the other hand, in the image quality priority mode, the same page of each part is transferred to the same region R.

  FIG. 5A is a functional block diagram for controlling the assignment of images to the intermediate transfer belt 36 based on the efficiency priority mode / image quality priority mode in the main control unit 20. Note that FIG. 4 is a block diagram for each function, and does not limit the hardware configuration.

  As shown in FIG. 5A, an image formation instruction by the operation of the UI 22 is received by the image formation information receiving unit 100. Further, in synchronization with the image forming instruction from the UI 22, the image information receiving unit 102 receives image information from the communication line network 78 or the HDD 74 via the I / F 74.

  The image information receiving unit 102 is connected to the print control management unit 62 and the image information page dividing unit 104.

  All information including so-called image data and description language information is sent to the print control management unit 62, and information (for example, a part of the description language information) that can recognize a page unit break is sent to the image concession page division unit 104. ) Is sent out.

  The image information page dividing unit 104 is connected to the transfer region layout information setting unit 106, and a layout in units of pages on the intermediate transfer belt 36 is executed.

  On the other hand, a copy number extracting unit 108 is connected to the image forming information receiving unit 100, and print number specifying information is extracted from the image forming information. The extracted print copy number information (single / plural copies) is sent to the image forming form designating unit 110.

  The mode selection information is input from the selection information receiving unit 114 to the image forming form designating unit 110. The selection information receiving unit 114 is input with information on either the efficiency priority mode or the image quality priority mode, which is selected by operating the selection key 22A of the UI 22. Note that the preset information (default) is the image quality priority mode in the present embodiment, but this default may be the efficiency priority mode.

  The image forming form designating unit 110 determines the designation information based on the information (single / plural copies) from the copy extraction unit 108 and the information (efficiency / image quality) from the selection information receiving unit 114, and the image The data is sent to the formation form determination unit 112.

  More specifically, as shown in the chart of FIG. 5B, in the image forming form designation unit 110, the efficiency priority mode is designated regardless of selection information in the case of a singular part, and in the case of a plurality of parts. A mode (efficiency priority mode / image quality priority mode) depending on the selection information is designated.

  The image forming form determining unit 112 sends the determined image forming form (priority mode designation information) to the image forming rule reading unit 116. The image formation rule reading unit 116 is connected to the ROM 56. The ROM 56 is provided with an efficiency priority image formation rule information storage area 56A and an image quality priority image formation rule information storage area 56B.

  In the image formation rule reading unit 116, either the efficiency priority image formation rule information or the image quality priority image formation rule information stored in the ROM 56 is based on the priority mode designation information received from the image formation form determination unit 112. And the read image formation rule information is sent to the transfer area layout information setting unit 106.

  The transfer area layout information setting unit 106 sets layout information for laying out received image information in the image transfer area of the intermediate transfer belt 36 in units of pages based on the read image forming rules.

  The transfer area layout information setting unit 106 is connected to the transfer area layout information output unit 118, and sends the layout information set by the transfer area layout information setting unit 106 to the print control management unit 62.

  The operation of this embodiment will be described below.

  FIG. 6 is an image layout control routine for laying out an image for each page on the intermediate transfer belt 36 according to the present embodiment.

  In step 150, it is determined whether or not an image formation instruction has been issued. If a negative determination is made, this routine ends.

  If an affirmative determination is made in step 150, the process proceeds to step 152 to accept image information, and then the process proceeds to step 154 to extract the number of copies information, and the process proceeds to step 156.

  In step 156, it is determined whether or not the mode designation information that is the image forming mode has been selected. If the determination is affirmative, the process proceeds to step 158 to select the selected designation information (efficiency priority mode or image quality). Priority mode) is set, and the process proceeds to step 162.

  If a negative determination is made in step 156, the process proceeds to step 160, preset information (default information) is set, and the process proceeds to step 162. In the present embodiment, the image quality priority mode is set.

  In step 162, it is determined whether the copy number information extracted in step 154 is a singular copy or a plurality of copies. Then, the efficiency priority image formation rule information is read, and the process proceeds to step 170.

  On the other hand, if it is determined in step 162 that there are a plurality of copies, the process proceeds to step 166 to determine the set selection information. If the efficiency priority mode is set in step 166, the process proceeds to step 164.

  If the image quality priority mode is set in step 166, the process proceeds to step 168, the image quality priority image formation rule information is read from the image quality priority image formation rule information storage area 56B of the ROM 56, and the process proceeds to step 170. .

  In step 170, a transfer area layout process on the intermediate belt 32 is executed.

  In the next step 172, the received image information and the set transfer area layout information are sent to the print control management unit 62, and this routine ends.

(Modification)
In this embodiment, one cycle of the intermediate transfer belt 36 is set as one cycle. However, depending on the intermediate transfer belt 36, the same density change may be repeated with a circumferential length that does not make one cycle. Therefore, a density sensor for detecting the density of the image transfer surface of the intermediate transfer belt 36 is arranged (the existing density sensor installed for detecting the patch density and correcting the density is applicable), and the intermediate transfer. If density distribution information in the entire circumferential direction of the belt 36 is acquired, and this density distribution information is analyzed, and there is periodicity, the period of the density change may be set as a period target in the image quality priority mode.

  FIG. 7 shows a comparison between the present embodiment in which the circumference of the intermediate transfer belt 36 is set to one cycle and the case in which the cycle based on the density distribution is set to one cycle.

  As shown in FIG. 7, in the above embodiment, the peripheral length of the intermediate transfer belt 36 is set to one cycle. Therefore, when the print job is two pages and four copies, the intermediate transfer belt 36 needs to be rotated four times (FIG. 7). 7 (see the image layout of the upper intermediate transfer belt 36).

  By the way, when the density distribution in the circumferential direction of the intermediate transfer belt in FIG. 7 is seen, it can be seen that the periods of Cd1, Cd2, Cd3, and Cd4 coincide. When such a density distribution is analyzed, in the print job (2 pages, 4 copies) designated as described above, two copies can be printed during one rotation of the intermediate transfer belt 36, and the intermediate transfer is performed. The belt 36 only needs two rounds (see the image layout of the intermediate transfer belt 36 in the lower stage of FIG. 7). That is, the period determination based on the density distribution may be effective depending on the print job.

  In the present embodiment and the modified example, a plurality of identical pages are transferred to the same region R on the intermediate transfer belt 36, but the image information of the received print job is analyzed, When the same image information exists between different pages in the section, control may be performed so that the image of the same image information is transferred to the same region R. For example, this corresponds to the case where one page and six pages of a print job have the same image on page 1 and page 6.

DESCRIPTION OF SYMBOLS 10 Printing apparatus for core business 12 Image formation part 14 Paper storage part 16 Post-processing part 18 Case 20 Main control part 22 UI (user interface)
22A selection key 24 optical scanning unit 26 photoconductor drum 28 developing unit 30 recording paper 32 transfer unit 34 fixing unit 36 intermediate transfer belt 38 primary transfer roller 40 paper storage unit 40A, 40B tray 42 paper transport unit 50 main control unit 52 CPU
54 RAM
56 ROM
56A Efficiency priority image formation rule information storage area 56B Image quality priority image formation rule information storage area 58 I / O
60 Bus 62 Print Control Management Unit 64 Transport Control Unit 66 Scanning Exposure Control Unit 68 Development Control Unit 70 Transfer Control Unit 72 Fixing Control Unit 74 Hard Disk 76 I / F
78 Communication network 100 Image formation information receiving unit 102 Image information receiving unit 104 Image information page dividing unit 106 Transfer area layout information setting unit 108 Copy number extracting unit 110 Image forming mode specifying unit 112 Image forming mode determining unit 114 Selection information receiving unit 116 Image formation rule reading unit 118 Transfer area layout information output unit R Image holding area

Claims (6)

One side of the recording paper on which an image is recorded is defined as one page, and is provided with an image holding area for a plurality of pages where images are sequentially held at a predetermined primary transfer position. An image carrier that orbits the primary transfer position;
Transfer means for transferring an image held in each image holding area of the image holding body from the primary transfer position to a recording sheet downstream from the image holding body from a predetermined secondary transfer position;
A recognition means for recognizing a period of a specific period object;
A first allocating unit that allocates an image of each page to the image holding area of the image carrier in accordance with a preset first allocating condition when image information for recording an image covers a plurality of pages;
When the image information for recording an image covers a plurality of copies, the top image of each part on the image holding body is determined based on the period recognized by the recognition unit according to the second allocation condition instead of the reference allocation condition. A second assigning means for assigning to the same image holding area;
An image forming apparatus. The first allocation condition is an efficiency-priority condition in which transfer is performed without skipping an image holding area on the image holding body in a plurality of divisions,
2. The image quality priority condition in which the second allocation condition is a transfer of an image holding area on the image holding member so that the same page becomes the same image holding area by dividing a plurality of copies. Image forming apparatus.   3. The image forming apparatus according to claim 1, wherein the specific cycle target is an image carrier that repeatedly circulates around the primary transfer position, and the time required for the image carrier to make one round is one cycle. A density sensor that detects the density of the image holding surface of the image carrier along the circumferential direction of the image carrier,
The recognition specific period object is density distribution information when the density sensor detects a reference image provided along the circulation direction on the image holding body, and is a period obtained by analyzing the density distribution information. The image forming apparatus according to claim 1, wherein the period is one period.   5. The image forming apparatus according to claim 1, further comprising a selection unit configured to select whether or not the second allocation unit functions. One side of the recording paper on which an image is recorded is defined as one page, and is provided with an image holding area for a plurality of pages where images are sequentially held at a predetermined primary transfer position. Targeting an image carrier that circulates around the primary transfer position, an image held in each image holding region from the primary transfer position is downstream of the image carrier from a predetermined secondary transfer position within the lap. An image transfer position control program for transferring to the recording paper on the side,
On the computer,
Recognize a specific target period,
When image information for recording an image covers a plurality of pages, the image of each page is allocated to the image holding area of the image holding body according to a preset allocation condition,
When the image information for recording an image covers a plurality of copies, based on the recognized period, the head image of each part on the image holding body is assigned to the same image holding area.
An image transfer position control program for executing this.