Recording medium accommodating device and image forming apparatus

Abstract

A recording medium accommodating device and an image forming apparatus, the recording medium accommodating device including: a one-side light source that is a light source disposed on one side of a loaded recording medium and that irradiates light toward the recording medium; a one-side imaging section that is an imaging section disposed on the one side and that performs imaging of the recording medium; a different-side light source that is a light source disposed on a different side of the loaded recording medium and that irradiates light toward the recording medium; a different-side imaging section that is an imaging section disposed on the different side and that performs imaging of the recording medium; and a processor that makes an amount of light from the different-side light source toward the recording medium when imaging is performed by the one-side imaging section smaller than an amount of light from the different-side light source toward the recording medium when imaging is performed by the different-side imaging section.

Description

Technical Field

[0001] This invention relates to a recording media holding device and an image forming device. Background Technology

[0002] Patent document 1 discloses the following process: air from the blow-out nozzle is blown onto the upper part of the single sheet bundle to make the single sheet float, and the top single sheet is adsorbed by the adsorption foot and conveyed to the printing process.

[0003] Patent document 2 discloses a paper feeding device that blows air onto multiple sheets of paper to make them float, and then conveys the topmost sheet of paper in one direction.

[0004] Patent Document 1: Japanese Patent Application Publication No. 05-306045

[0005] Patent Document 2: Japanese Patent Application Publication No. 2014-201413 Summary of the Invention

[0006] One approach is to use multiple camera units to photograph the recording medium when it is being photographed. If the light sources are arranged in a configuration corresponding to each camera unit, the amount of light illuminating the recording medium can be increased when each camera unit is taking photographs.

[0007] Here, if light emitted from a light source positioned corresponding to one photographic unit can easily reach other photographic units, the quality of the photographic images obtained by those other photographic units may be reduced.

[0008] The object of the present invention is to improve the quality of photographic images obtained by multiple photographic sections, compared to a structure in which light emitted from a light source corresponding to one of the multiple photographic sections can easily affect the photography performed by other photographic sections.

[0009] The invention described in Scheme 1 is a recording medium accommodating device, comprising: a side light source disposed on one side of the loaded recording medium and irradiating the recording medium with light; a side imaging unit disposed on the one side and taking pictures of the recording medium; a other side light source disposed on the other side of the loaded recording medium and irradiating the recording medium with light; a other side imaging unit disposed on the other side and taking pictures of the recording medium; and a processor that makes the amount of light from the other side light source toward the recording medium when taking pictures by the side imaging unit less than the amount of light from the other side light source toward the recording medium when taking pictures by the other side imaging unit.

[0010] The invention described in Scheme 2 is the recording media accommodating device described in Scheme 1, wherein,

[0011] The processor reduces the amount of light from the other light source toward the recording medium by either turning off the other light source or reducing its output.

[0012] The invention described in Scheme 3 is a recording medium receiving device comprising: a side light source disposed on one side of the recorded medium and irradiating light onto the recorded medium; a side photographic unit disposed on the one side and taking photographs of the recorded medium; a other side light source disposed on the other side of the recorded medium and irradiating light onto the recorded medium; and a other side photographic unit disposed on the other side and taking photographs of the recorded medium. At least one of the side light source and the other side light source is arranged with its own optical axis tilted relative to an imaginary straight line passing through it, the imaginary straight line being a side of the recorded medium and extending from the one side toward the other side, and / or, the wavelength of the light emitted from the side light source is different from the wavelength of the light emitted from the other side light source.

[0013] The invention described in Scheme 4 is the recording media receiving device described in Scheme 3, wherein,

[0014] The imaginary straight line passing through the light source on one side also passes through the light source on the other side. The light source on one side and the light source on the other side are arranged on the common imaginary straight line passing through both the light source on one side and the light source on the other side.

[0015] The invention described in Scheme 5 is the recording media receiving device described in Scheme 4, wherein,

[0016] Both the one-sided camera unit and the other-sided camera unit are arranged on a common imaginary straight line along the side. The one-sided camera unit and the other-sided camera unit are located on the common imaginary straight line passing through the two side cameras, namely the camera unit passing line. When comparing the positions in the directions intersecting the extension direction of the camera unit passing line, the position of the camera unit passing line is different from the position of the light source passing line. The light axis of at least one of the one-sided light source and the other-sided light source is tilted to the side where the camera unit passing line is located.

[0017] The invention described in Scheme 6 is a recording media receiving device as described in any one of Schemes 3 to 5, wherein,

[0018] At least one of the light sources on one side and the light source on the other side is arranged in a shape that faces diagonally upward or diagonally downward.

[0019] The invention described in Scheme 7 is the recording media receiving device described in Scheme 6, wherein,

[0020] On one side and the other side, the light source is provided at a position above or below the camera unit respectively provided on that side. The light source provided at a position above or below the camera unit is oriented toward the side where the camera unit is located, which is closer to the horizontal plane that passes through the imaginary straight line passing through the light source.

[0021] The invention described in Scheme 8 is an image forming apparatus comprising: a recording medium receiving device for receiving a recording medium; and an image forming unit for forming an image on a recording medium discharged from the recording medium receiving device, wherein the recording medium receiving device has the structure of any one of Schemes 1 to 7.

[0022] Invention Effects

[0023] According to the first aspect of the present invention, compared to a structure in which light emitted from a light source corresponding to one of the multiple photographic sections can easily affect photography performed by other photographic sections, the quality of photographic images obtained by the multiple photographic sections can be improved.

[0024] According to the second aspect of the present invention, by controlling the output of the other light source, it is possible to reduce the amount of light from the other light source toward the imaging section on one side.

[0025] According to the third aspect of the present invention, compared to a structure in which light emitted from a light source corresponding to one of the multiple photographic sections can easily affect photography performed by other photographic sections, the quality of photographic images obtained by the multiple photographic sections can be improved.

[0026] According to the fourth aspect of the present invention, compared to the case where neither the light source nor the light source is provided on the common imaginary straight line through which the light source passes, it is easier to make the illumination conditions of the light from one light source to the recording medium consistent with the illumination conditions of the light from the other light source to the recording medium.

[0027] According to the fifth aspect of the present invention, compared to the case where the optical axis of one light source and the optical axis of the other light source extend along the direction of the straight line through the photographic section, the quality of the photographic image obtained by the multiple photographic sections can be improved.

[0028] According to the sixth aspect of the present invention, compared with the case where both the light source on one side and the light source on the other side are arranged in a horizontal direction, the quality of the photographic image obtained by the multiple photographic sections can be improved.

[0029] According to the seventh aspect of the present invention, compared with the case where both the light source on one side and the light source on the other side are arranged in a horizontal direction, the quality of the photographic image obtained by the multiple photographic sections can be improved.

[0030] According to the eighth aspect of the present invention, compared to a structure in which light emitted from a light source corresponding to one of the multiple photographic sections can easily affect photography performed by other photographic sections, the quality of photographic images obtained by the multiple photographic sections can be improved. Attached Figure Description

[0031] The embodiments of the present invention will be described in detail with reference to the following figures.

[0032] Figure 1 This is a diagram showing an image forming apparatus;

[0033] Figure 2 This is a diagram showing an example of the hardware structure of the control unit;

[0034] Figure 3 This is a perspective view of the paper holding device as seen from the front side of the image forming apparatus.

[0035] Figure 4 From Figure 3 The diagram shows the paper-holding device viewed in the direction indicated by arrow IV.

[0036] Figure 5 This is a flowchart illustrating an example of the process performed when setting the blowing conditions;

[0037] Figure 6 This is another flowchart illustrating the process performed when setting the blowing conditions;

[0038] Figure 7 This is a top view of the paper holding device;

[0039] Figure 8 Observe from the direction indicated by arrow VIII Figure 7 A diagram showing the paper-holding device;

[0040] Figure 9 This is a diagram showing another structural example of a paper-containing device;

[0041] Figure 10 This is a flowchart illustrating the process executed when determining the content to be processed.

[0042] Symbol Explanation

[0043] 1-Image forming apparatus, 1A-Image forming unit, 11a-CPU, 200-Paper receiving device, 401-One-side blowing device, 402-The other-side blowing device, 501-One-side photographic unit, 502-The other-side photographic unit, 601-One-side light source, 601A-Optical axis, 602-The other-side light source, 602A-Optical axis, 810-Light source passes through a straight line, 830-The photographic unit passes through a straight line, P-Paper, R1-One side, R2-The other side. Detailed Implementation

[0044] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0045] Figure 1 This is a diagram showing the image forming apparatus 1 according to this embodiment.

[0046] Figure 1 The image forming apparatus 1 shown is a type of image forming apparatus using a tandem intermediate transfer method. This image forming apparatus 1 is equipped with a paper holding device 200 that holds paper P, for example, as a recording medium.

[0047] Furthermore, an image forming unit 1A is provided in the image forming apparatus 1. The image forming unit 1A forms an image on the paper P fed from the paper receiving device 200.

[0048] Multiple image forming units 1Y, 1M, 1C, and 1K are provided in the image forming unit 1A. The multiple image forming units 1Y, 1M, 1C, and 1K respectively use an electrophotographic method to form tonal images of each color component.

[0049] Furthermore, a primary transfer unit 10 is provided in the image forming unit 1A. The tonal images of each color formed by each image forming unit 1Y, 1M, 1C, and 1K are transferred to the intermediate transfer belt 15 through the primary transfer unit 10.

[0050] Furthermore, a secondary transfer unit 20 is provided in the image forming unit 1A. The tonal image transferred to the intermediate transfer belt 15 is transferred to the paper P through the secondary transfer unit 20.

[0051] Furthermore, the image forming apparatus 1 is provided with a fixing device 60 for fixing the toner image that has been transferred to the paper P a second time onto the paper P.

[0052] Furthermore, the image forming apparatus 1 is provided with a control unit 240 for controlling the operation of each part of the image forming apparatus 1. Also, the image forming apparatus 1 is provided with a receiving unit 70 for receiving information input by the user.

[0053] The receiving unit 70 is, for example, composed of a touch panel. In addition to receiving information from the user, the receiving unit 70 also has a display function for displaying information.

[0054] Alternatively, the device for receiving the signal and the device for displaying the signal can be set up separately.

[0055] [Structure of Control Unit 240]

[0056] Figure 2 This is a diagram showing an example of the hardware structure of the control unit 240. The control unit 240 is implemented by a computer.

[0057] The control unit 240 has an arithmetic processing unit 111 that performs digital arithmetic processing according to a program and a secondary storage unit 91 that stores information.

[0058] The secondary storage unit 91 is implemented, for example, by existing information storage devices such as HDD (Hard Disk Drive), semiconductor memory, and magnetic tape.

[0059] The arithmetic processing unit 111 is provided with a CPU 11a, which is an example of a processor.

[0060] Furthermore, the arithmetic processing unit 111 is provided with RAM 11b, which serves as working memory for CPU 11a. Also, the arithmetic processing unit 111 is provided with ROM 11c, which stores programs executed by CPU 11a.

[0061] Furthermore, the arithmetic processing unit 111 is equipped with a non-volatile memory 11d that can retain data even when the power supply is interrupted.

[0062] The non-volatile memory 11d is composed of, for example, SRAM or flash memory that is backed up by a battery. Various information, such as programs executed by the arithmetic processing unit 111, is stored in the secondary storage unit 91.

[0063] In this embodiment, the CPU 11a of the arithmetic processing unit 111 reads the program stored in the ROM 11c or the secondary storage unit 91. The CPU 11a executes the program stored in the ROM 11c or the secondary storage unit 91. Thus, various processes performed in the image forming apparatus 1 are executed. The various processes performed in the image forming apparatus 1 are executed by the CPU 11a.

[0064] The program executed by CPU 11a can be provided to image forming apparatus 1 via a recording medium.

[0065] Examples of recording media include magnetic recording media such as magnetic tapes or disks. Furthermore, examples of recording media include optical recording media such as optical discs.

[0066] Furthermore, as a recording medium, optical-magnetic recording media can be cited as an example. Also, as a recording medium, semiconductor memories can be cited as an example.

[0067] Furthermore, the program executed by CPU 11a can also be provided to image forming apparatus 1 via a communication unit such as the Internet.

[0068] refer to Figure 1 The image forming apparatus 1 will be further described.

[0069] The following devices are provided in each image forming unit 1Y, 1M, 1C, and 1K.

[0070] First, a photosensitive drum 11 is provided that rotates in the direction of arrow A. A charger 12 is provided around the photosensitive drum 11 to charge it. Furthermore, an exposure device 13 for forming an electrostatic latent image is provided on the photosensitive drum 11. In addition, a developer 14 is provided to develop the electrostatic latent image on the photosensitive drum 11 using a toner.

[0071] Furthermore, a primary transfer roller 16 is provided in each image forming unit 1Y, 1M, 1C, and 1K. The primary transfer roller 16 is provided in the primary transfer section 10. The toner image formed on the photosensitive drum 11 is transferred to the intermediate transfer belt 15 by the primary transfer roller 16.

[0072] Furthermore, each image forming unit 1Y, 1M, 1C, and 1K is equipped with a drum cleaner 17. The drum cleaner 17 removes residual toner and other substances from the photosensitive drum 11.

[0073] Intermediate transfer belt 15 travels at a predetermined speed along Figure 1 The arrow B indicates that the movement is cyclical.

[0074] The primary transfer section 10 is configured to include a primary transfer roller 16, which is positioned opposite the photosensitive drum 11 across the intermediate transfer belt 15.

[0075] In this embodiment, the toner images on each photosensitive drum 11 are electrostatically adsorbed onto the intermediate transfer belt 15 in sequence. As a result, overlapping toner images are formed on the intermediate transfer belt 15.

[0076] The secondary transfer section 20 is composed of a secondary transfer roller 22 and a support roller 25 arranged opposite to the outer periphery of the intermediate transfer belt 15.

[0077] The secondary transfer roller 22 presses against the support roller 25 across the intermediate transfer belt 15. Voltage is applied between the secondary transfer roller 22 and the support roller 25. In this embodiment, the toner on the intermediate transfer belt 15 is transferred onto the paper P being conveyed to the secondary transfer section 20.

[0078] In this embodiment, the paper P delivered from the paper receiving device 200 is conveyed to the secondary transfer unit 20. The toner image on the intermediate transfer belt 15 is transferred onto the paper P delivered from the paper receiving device 200.

[0079] In this embodiment, image data is output to the image forming apparatus 1 from an image reading device or a personal computer (PC) not shown in the figure.

[0080] Then, image processing is performed on the image data using an image processing device (not shown). This generates image data for four colors: Y, M, C, and K. The generated image data is then output to an exposure device 13 configured for each of the four colors: Y, M, C, and K.

[0081] In the exposure apparatus 13, light is irradiated onto the photosensitive drum 11 according to the input image data.

[0082] The exposure device 13 uses a semiconductor laser, for example, to expose the photosensitive drum 11. Alternatively, the exposure device 13 uses an LED (Light Emitting Diode) for example, to expose the photosensitive drum 11.

[0083] In each photosensitive drum 11, the surface is charged using a charger 12. Then, the surface is scanned and exposed using an exposure device 13, thereby forming an electrostatic latent image on the surface.

[0084] Next, the toner is applied to the photosensitive drum 11 using the developer 14. Thus, a toner image is formed on the photosensitive drum 11.

[0085] The tonal image formed on the photosensitive drum 11 is transferred to the intermediate transfer belt 15 in the primary transfer section 10.

[0086] After the toner image is transferred to the surface of the intermediate transfer belt 15, the toner image moves to the secondary transfer section 20 via the moving intermediate transfer belt 15.

[0087] In the secondary transfer section 20, the secondary transfer roller 22 is pressed onto the support roller 25 via the intermediate transfer belt 15.

[0088] In this embodiment, the paper P delivered from the paper receiving device 200 is sandwiched between the intermediate transfer belt 15 and the secondary transfer roller 22.

[0089] Thus, the unfixed toner image held on the intermediate transfer belt 15 is transferred to the paper P in the secondary transfer section 20. Then, the paper P with the transferred toner image is discharged through the fixing device 60 to the paper discharge section (not shown).

[0090] [Description of the paper holding device]

[0091] In a paper holding device 200, which is an example of a recording media holding device, a holding section 53 is provided to hold the loaded paper P.

[0092] The receiving section 53 is provided with a support platform that supports the loaded paper P from below. Furthermore, the receiving section 53 is provided with a side guide plate or the like that abuts against the side edge of the paper P for positioning the paper P.

[0093] In this embodiment, the uppermost piece of paper P in the paper holding device 200 is fed out.

[0094] In this embodiment, a paper bundle 54 is formed by multiple sheets of paper P loaded in the paper holding device 200. The uppermost sheet of paper P contained in the paper bundle 54 is fed out.

[0095] Then, the tonal image formed by the image forming unit 1A is transferred onto the paper P that is being sent out via the secondary transfer unit 20.

[0096] Furthermore, the paper holding device 200 is provided with a blowing device 400 for blowing gas onto the paper P loaded in the paper holding device 200.

[0097] Furthermore, in Figure 1 Although the illustration is omitted, the paper holding device 200 is equipped with a light source for illuminating the paper P. Furthermore, the paper holding device 200 is equipped with a photographic unit for photographing the paper P. The light source and photographic unit will be described later.

[0098] In this embodiment, the blowing device 400, which is an example of a gas blowing unit, blows gas onto the loaded paper P. In this embodiment, the gas is blown onto the loaded paper P from the side.

[0099] Therefore, in this embodiment, the paper P floats. Furthermore, in this embodiment, gas enters between the papers P. If gas enters between the papers P, it is less likely that so-called multi-feeding will occur, where multiple sheets of paper P are fed out in an overlapping state.

[0100] In addition, in this embodiment, Figure 1 A blowing device 400 is provided on the front and back sides of the paper bundle 54 shown. In this embodiment, gas is blown onto the paper P from the front and back sides.

[0101] In this embodiment, air is blown as the gas. Furthermore, the type of gas is not particularly limited. Gases other than air may also be blown onto the paper P.

[0102] Furthermore, a heater, serving as a heating source, is sometimes installed in the paper holding device 200. In this case, heated gas is blown onto the loaded paper P.

[0103] Furthermore, in this embodiment, a suction section 100 for suctioning the paper P constituting the paper bundle 54 is provided above the paper bundle 54.

[0104] Furthermore, a plurality of conveyor rollers 52 are provided for conveying the paper P fed from the paper receiving device 200. The conveyor rollers 52 are positioned downstream of the paper receiving device 200 in the conveying direction of the paper P.

[0105] In this embodiment, the paper P delivered from the paper receiving device 200 is first conveyed by the upstream conveyor roller 52E. "Upstream conveyor roller 52E" refers to the conveyor roller 52 located on the upstream side in the conveying direction of the paper P among the plurality of conveyor rollers 52.

[0106] Then, the paper P is further conveyed by other conveyor rollers 52 located further downstream than the upstream conveyor roller 52E. As a result, the paper P moves toward the secondary transfer unit 20 and the fixing device 60.

[0107] Furthermore, a conveyor belt 55 is positioned downstream of the secondary transfer roller 22 in the paper P transport direction. The conveyor belt 55 transports the paper P, which has undergone secondary transfer, to the fixing unit 60.

[0108] The suction unit 100 suctions and holds the paper P at the top position of the paper P loaded in the paper holding device 200.

[0109] Then, the suction unit 100 moves toward the uppermost conveyor roller 52E while holding the paper P in its current state. Thus, the paper P is transferred from the suction unit 100 to the uppermost conveyor roller 52E. Thus, the paper P begins to be conveyed via the uppermost conveyor roller 52E.

[0110] After transferring the paper P to the uppermost conveyor roller 52E, the suction unit 100 moves away from the uppermost conveyor roller 52E. As a result, the suction unit 100 returns to its initial position.

[0111] Figure 3 This is a perspective view of the paper holding device 200 as seen from the front side of the image forming apparatus 1. Figure 4 From Figure 3 The diagram shows the paper receiving device 200 viewed in the direction indicated by arrow IV. In other words, Figure 4 This is a top view of the paper holding device 200.

[0112] exist Figure 3 The diagram shows the state when gas is blown using the blowing device 400. Additionally, in... Figure 3 The illustration of the blowing device 400 is omitted in the text.

[0113] On the other hand, Figure 4 The blowing device 400 is shown in the image.

[0114] like Figure 4 As shown, in this embodiment, the blowing device 400 is provided with a one-side blowing device 401 and a other-side blowing device 402.

[0115] A one-sided blowing device 401 is provided on one side R1 of the paper P. And a other-sided blowing device 402 is provided on the other side R2 of the paper P.

[0116] A side R1 of paper P refers to the side of a side 301 of paper P, which is a rectangle, along the conveying direction of paper P.

[0117] Furthermore, the other side R2 of the paper P is the side of the other side 302 of the rectangular paper P along the conveying direction of the paper P.

[0118] In this embodiment, another side R2 is located on the opposite side of one side R1, separated by paper P.

[0119] Furthermore, in this embodiment, as Figure 3 As shown, a photography unit 500 for taking pictures of paper P is provided, consisting of a one-side photography unit 501 and a other-side photography unit 502.

[0120] The one-side camera unit 501 and the other-side camera unit 502 are so-called cameras. The one-side camera unit 501 and the other-side camera unit 502 are, for example, composed of CCD or CMOS.

[0121] One imaging unit 501 is disposed on one side R1. The other imaging unit 502 is disposed on the other side R2.

[0122] Moreover, such as Figure 3 As shown, a side light source 601, serving as a light source 600, is provided on one side R1. This side light source 601 illuminates the paper P being photographed by the side photography unit 501.

[0123] In this embodiment, when the paper P is photographed by the one-side photographic unit 501, the one-side light source 601 is lit.

[0124] Furthermore, in this embodiment, as described later, when the paper P is photographed by the one-side photographing unit 501, the other-side light source 602 is turned off, or the other-side light source 602 is reduced in output.

[0125] A light source 602, serving as a light source 600, is provided on the other side, R2 side. This light source 602 illuminates the paper P being photographed by the photographing unit 502 on the other side.

[0126] In this embodiment, when the paper P is photographed by the other side photographic unit 502, the other side light source 602 is lit.

[0127] Furthermore, in this embodiment, as described later, when the paper P is photographed by the other side photography unit 502, the light source 601 on one side is turned off, or the light source 601 on one side is reduced in output.

[0128] In this embodiment, when photographing paper P, one example of a processor is... Figure 2 The CPU11a shown controls the output of the light source 600.

[0129] In this specification, the amount of light from the other light source 602 directed toward the paper P will be referred to as "the amount of light from the other side". Furthermore, the amount of light from the one light source 601 directed toward the paper P will be referred to as "the amount of light from the one side".

[0130] In the Figure 3 When the one-sided camera unit 501 takes a picture, the CPU 11a illuminates the one-sided light source 601. Furthermore, while the one-sided camera unit 501 is taking a picture, the CPU 11a reduces the amount of light on the other side.

[0131] In this case, when photography is performed by the camera unit 501 on one side, the amount of light on one side becomes greater than the amount of light on the other side.

[0132] CPU11a makes the amount of light on the other side when the camera unit 501 takes a picture less than the amount of light on the other side when the camera unit 502 takes a picture.

[0133] Therefore, when taking pictures by the side camera unit 501, the amount of light that is backlit relative to the side camera unit 501 is reduced. As a result, the quality of the photographic image obtained by the side camera unit 501 is improved.

[0134] If backlighting light easily reaches the camera unit 501 on one side, it can easily produce light spots or ghosting. In contrast, in this embodiment, the amount of backlighting light is reduced, making it less likely to produce light spots or ghosting.

[0135] Furthermore, when taking a photograph using the imaging unit 501 on one side, if the light intensity on the other side is not reduced, objects other than the paper P are easily captured in the photographic image obtained by the imaging unit 501 on one side. In contrast, if the light intensity on the other side is reduced as in this embodiment, objects other than the paper P are less likely to be captured in the photographic image obtained by the imaging unit 501 on one side.

[0136] When the camera unit 501 is taking pictures, the CPU 11a turns off the light source 602 on the other side, or reduces the output of the light source 602 on the other side. As a result, the amount of light on the other side decreases.

[0137] In this case, as described above, when photography is performed by the side photography unit 501, the amount of light that becomes backlighting relative to the side photography unit 501 is reduced.

[0138] The same process is performed when photography is taken by the other side's camera unit 502.

[0139] When taking pictures by the other side camera unit 502, the CPU 11a illuminates the other side light source 602. Furthermore, when taking pictures by the other side camera unit 502, the CPU 11a reduces the amount of light on that side.

[0140] When photography is taken by the other side camera unit 502, the amount of light on the other side becomes greater than the amount of light on the other side.

[0141] CPU11a makes the light intensity on one side when the camera is photographed by the other side camera unit 502 less than the light intensity on one side when the camera is photographed by the one side camera unit 501.

[0142] Therefore, when taking a picture from the other side camera unit 502, the amount of light that becomes backlighting relative to the other side camera unit 502 is reduced. As a result, the quality of the photographic image obtained from the other side camera unit 502 is improved.

[0143] Furthermore, methods for reducing the amount of light that becomes backlight are not limited to controlling the output of the light source 600.

[0144] For example, the amount of light that becomes backlight can be reduced by positioning the light-blocking component opposite to one side light source 601 or the other side light source 602.

[0145] In other words, the amount of light that becomes backlight can be reduced by placing the shielding component between one side light source 601 and the paper P. Furthermore, the amount of light that becomes backlight can also be reduced by placing the shielding component between the other side light source 602 and the paper P.

[0146] Furthermore, for example, the amount of light that becomes backlight can be reduced by changing the orientation of one light source 601 or the other light source 602. Specifically, the amount of light that becomes backlight can be reduced by rotating one light source 601 or the other light source 602 by 90° or 180°.

[0147] The process of positioning the shielding component in a position opposite to either the light source 601 on one side or the light source 602 on the other side is explained.

[0148] When using a shielding component, during photography by the imaging unit 501 on one side, the shielding component, which is provided corresponding to the light source 602 on the other side, is positioned opposite the light source 602 on the other side.

[0149] Furthermore, when taking pictures by the side camera unit 501, the shielding member provided corresponding to the side light source 601 is shifted from the position opposite to the side light source 601.

[0150] Furthermore, when taking pictures by the other side camera unit 502, the shielding member provided corresponding to the light source 601 on one side is positioned opposite the light source 601 on that side.

[0151] Furthermore, when taking a photograph by the other side camera unit 502, the shielding member provided corresponding to the other side light source 602 is shifted from the opposite position of the other side light source 602.

[0152] Furthermore, the movement of the shielding member toward the opposite position of the light source 600 can be performed using a known mechanism equipped with a drive source such as a motor. Similarly, the movement of the shielding member toward a position offset from the opposite position can also be performed using a known mechanism equipped with a drive source such as a motor.

[0153] Next, the process of changing the orientation of one side light source 601 or the other side light source 602 will be explained.

[0154] When taking pictures using the one-sided camera unit 501, the one-sided light source 601 is directed towards the paper P side. Furthermore, while taking pictures using the one-sided camera unit 501, the other-sided light source 602 is rotated 90° or 180°. As a result, the other-sided light source 602 is directed towards a side different from the side where the paper P is located.

[0155] Furthermore, when taking a photograph by the other side's camera unit 502, the other side's light source 602 is directed towards the paper P side. Also, when taking a photograph by the other side's camera unit 502, the light source 601 is rotated 90° or 180°. Thus, the light source 601 is directed towards a side different from the side where the paper P is located.

[0156] In addition, the rotation of the light source 600 can be achieved using a known mechanism with a drive source such as a motor.

[0157] Figure 5 This is a flowchart illustrating an example of the process performed when setting the blowing conditions.

[0158] In this embodiment, the following process is performed to set the conditions, i.e., the blowing conditions, for blowing gas to the paper P using the blowing device 400.

[0159] In this embodiment, CPU11a first performs a process to make the paper P float (step S101). CPU11a operates one side blowing device 401 and the other side blowing device 402 to make the paper P float.

[0160] Then, CPU 11a begins imaging via the one-sided imaging unit 501 (step S102). At this time, as described above, CPU 11a illuminates the one-sided light source 601. Simultaneously, CPU 11a reduces the light intensity on the other side.

[0161] Next, CPU11a determines the behavior of paper P on one side as the behavior of paper P (step S103). CPU11a determines the behavior of paper P on one side based on the photographic image obtained by the photographic unit 501 on one side.

[0162] Then, if it is determined that the behavior of the paper P on one side does not meet the pre-defined conditions, the CPU11a adjusts the air volume of the blowing device 401 on one side (step S104).

[0163] Then, CPU11a again makes a determination regarding the behavior of the paper P on one side in step S103.

[0164] In step S103, if it is determined that the behavior of the paper P on one side meets the predetermined conditions, CPU11a starts taking pictures through the other side photographic unit 502 (step S105).

[0165] At this time, as described above, CPU11a illuminates the other light source 602. Furthermore, CPU11a reduces the light intensity on one side.

[0166] Next, CPU11a determines the behavior of paper P on the other side as a behavior of paper P (step S106). CPU11a determines the behavior of paper P on the other side based on the photographic image obtained by the photographic unit 502 on the other side.

[0167] Then, if it is determined that the behavior of the paper P on the other side does not meet the pre-defined conditions, the CPU 11a adjusts the airflow of the blowing device 402 on the other side (step S107). Then, the CPU 11a again determines the behavior of the paper P on the other side in step S106.

[0168] Then, if it is determined that the behavior of the paper P on the other side meets the predefined conditions, the CPU11a proceeds to the processing of step S108.

[0169] In step S106, when it is determined that the behavior of the paper P on the other side meets the predetermined conditions, the blowing of gas using the blowing device 401 on one side and the blowing of gas using the blowing device 402 on the other side are temporarily stopped.

[0170] Alternatively, the gas blowing process can continue in this state without stopping.

[0171] Alternatively, the gas blowing can continue in this state without stopping until the actual image forming process begins on the paper P.

[0172] The processing steps S101 to S106 are performed in the preparation stage before the actual image formation process begins.

[0173] In step S108, CPU11a stores the blowing conditions in Figure 2 The secondary storage unit 91 shown.

[0174] In detail, CPU11a stores the blowing conditions when the behavior of the paper P on one side meets the aforementioned pre-defined conditions in the secondary storage unit 91.

[0175] Furthermore, CPU11a stores the blowing conditions in the secondary storage unit 91 when the behavior of the paper P on the other side meets the aforementioned pre-defined conditions.

[0176] This concludes the process of setting the blowing conditions.

[0177] Then, based on instructions from the user, the image begins to be formed on paper P.

[0178] When an image begins to form on the paper P, the CPU 11a reads and obtains the blowing conditions stored in the secondary storage unit 91.

[0179] Then, CPU11a controls the blowing device 401 on one side and the blowing device 402 on the other side based on the blowing conditions.

[0180] In this case, the blowing device 401 on one side and the blowing device 402 on the other side operate according to the blowing conditions obtained through the processing of steps S101 to S108.

[0181] Figure 6 This is another flowchart illustrating the process performed when setting the blowing conditions.

[0182] Not limited to Figure 5The process shown can also be performed. Figure 6 The processing is shown.

[0183] exist Figure 6 In the process shown, the above-described process on one side and the above-described process on the other side are performed in parallel.

[0184] Specifically, firstly, as described above, CPU11a performs a process to make the paper P float (step S201).

[0185] Next, CPU11a begins to take pictures through one side camera unit 501 and begins to take pictures through the other side camera unit 502 (step S202).

[0186] Then, CPU11a performs the processing of steps S203 to S204 and steps S205 to S206 in parallel.

[0187] The processing of steps S203 to S204 is the same as that of steps S103 to S104 described above. In the processing of steps S203 to S204, the determination of the behavior of the paper P and the adjustment of the air volume of the one-sided blowing device 401 are repeatedly performed.

[0188] and, Figure 6 The processing of steps S205 to S206 is the same as that of steps S106 to S107 described above. In the processing of steps S205 to S206, the determination of the behavior of the paper P and the adjustment of the air volume of the blowing device 402 on the other side are repeatedly performed.

[0189] Moreover, in Figure 6 In the process shown, step S207 is performed every predetermined time interval.

[0190] In step S207, CPU11a determines whether the behavior of paper P on one side and the other side meets the predefined conditions.

[0191] exist Figure 6 In the process shown, the process of making the behavior of paper P meet the predetermined conditions is repeatedly performed in steps S203 to S204 and steps S205 to S206.

[0192] In step S207, it is determined whether the behavior of paper P on one side and the other side meets the predefined conditions.

[0193] Then, if both sides are determined to meet the pre-defined conditions, CPU11a proceeds to step S208.

[0194] In step S207, if it is determined that the behavior of paper P on one side meets the predetermined conditions and the behavior of paper P on the other side meets the predetermined conditions, CPU11a proceeds to step S208.

[0195] On the other hand, if the pre-defined conditions are not met in step S207, CPU11a continues to process steps S203 to S204 and steps S205 to S206.

[0196] Furthermore, the process in step S207 is performed again.

[0197] In step S208, similar to step S108 above, CPU11a stores the blowing conditions when the behavior of the paper P on one side meets the predetermined conditions in the secondary storage unit 91.

[0198] Furthermore, in step S208, CPU11a stores the blowing conditions when the behavior of the paper P on the other side meets the predetermined conditions in the secondary storage unit 91.

[0199] Figure 7 and Figure 8 This is a diagram showing another structural example of the paper holding device 200.

[0200] Figure 7 This is a top view of the paper holding device 200.

[0201] Figure 8 Observe from the direction indicated by arrow VIII Figure 7 The diagram shows the paper holding device 200. In other words, Figure 8 This is a view of the paper receiving device 200 from a position downstream of the paper receiving device 200 in the conveying direction of the paper P.

[0202] like Figure 8 As shown, in this structural example, one side light source 601 and the other side light source 602 are respectively arranged in a shape facing obliquely upward.

[0203] On each of the sides R1 and R2, a light source 600 is provided at a position lower than the camera unit 500.

[0204] In this embodiment, a side light source 601 is provided at a position lower than the side camera unit 501. Furthermore, a side light source 602 is provided at a position lower than the other side camera unit 502.

[0205] In this structural example, one light source 601 is configured with its own optical axis 601A tilted.

[0206] On the other hand, one light source 601 is configured with its own optical axis 601A tilted relative to an imaginary straight line 801 passing through it.

[0207] The "imaginary line 801" is an imaginary line 801 along the side 118 of the paper P. The paper P is formed as a rectangle and has a side 118 extending from one side R1 to the other side R2.

[0208] Imagine line 801 as a line along side 118.

[0209] In this structural example, the other light source 602 is also configured with its optical axis 602A tilted. The other light source 602 is also configured with its own optical axis 602A tilted relative to an imaginary straight line 801 passing through it.

[0210] In this embodiment, one of the light sources 601 and the other light source 602 is configured with its optical axis tilted relative to the imaginary straight line 801.

[0211] Alternatively, it is not limited to this; the optical axis may be tilted relative to the imaginary straight line 801 in only one of the light sources 600 (one on one side, 601 and the other on the other side, 602). In this case, the optical axis in the other light source 600 is along the imaginary straight line 801.

[0212] Here, we envision a horizontal plane H1 passing through the aforementioned imaginary straight line 801 that passes through the light source 601 on one side. In this embodiment, the imaging unit 501 on one side is located above this horizontal plane H1.

[0213] A side light source 601 is positioned below the side camera unit 501 and is configured to face the side where the side camera unit 501 is located, which is further below the horizontal plane H1.

[0214] Furthermore, imagine a horizontal plane H2 passing through an imaginary straight line 801 that passes through the light source 602 on the other side. In this embodiment, the imaging unit 502 on the other side is located above this horizontal plane H2.

[0215] The other light source 602, which is located lower than the other camera unit 502, is also positioned so that it faces the side of the other camera unit 502, which is located further away from the horizontal plane H2.

[0216] In addition, the two light sources 600 can be positioned higher than the camera unit 500 located on the same side as itself.

[0217] That is, the light source 601 on one side can be positioned higher than the imaging unit 501 on the other side. And the light source 602 on the other side can be positioned higher than the imaging unit 502 on the other side.

[0218] Furthermore, one of the two light sources 600 can be positioned higher than the photographic unit 500 positioned on the same side as the first light source 600, and the other light source 600 can be positioned lower than the photographic unit 500 positioned on the same side as the second light source 600.

[0219] When the light source 600 is positioned above the camera module 500, it is arranged so that the light source 600 faces diagonally downwards. In this case, the light source 600 is also positioned so that it faces the side of the camera module 500 that is closer to it than the horizontal plane that passes through the imaginary straight line 801.

[0220] exist Figure 8 In the structural example shown, the aforementioned imaginary straight line 801, which passes through one side light source 601, also passes through the other side light source 602.

[0221] In this structural example, the common imaginary straight line 801 passes through both one side light source 601 and the other side light source 602. In this structural example, both one side light source 601 and the other side light source 602 are located on the common imaginary straight line 801.

[0222] Hereinafter, in this specification, the common imaginary straight line 801 passing through both the light source 601 on one side and the light source 602 on the other side will be referred to as the "light source passing line 810".

[0223] Furthermore, here, we envision another common imaginary straight line 802 along side 118. In this structural example, both the one-side camera unit 501 and the other-side camera unit 502 are located on this other common imaginary straight line 802.

[0224] Hereinafter, in this specification, the common imaginary straight line 802 passing through both the camera unit 501 on one side and the camera unit 502 on the other side will be referred to as the "camera unit passing line 830".

[0225] In this structural example, the two imaging units 501 and 502 are located on the straight line 830 through which the imaging units pass.

[0226] Here, we compare the position in the direction that intersects the extension direction of the camera unit along line 830, i.e., the position in the intersection direction. In this embodiment, in Figure 8 In the diagram, the arrow shown by symbol 8A indicates the direction of the intersection.

[0227] In this structural example, in the intersecting direction, the position of the camera unit through line 830 is different from the position of the light source through line 810.

[0228] Then, in this structural example, the optical axis 601A of one side light source 601 and the optical axis 602A of the other side light source 602 are tilted toward the side where the photographic section passes through the straight line 830.

[0229] Alternatively, as described above, the optical axis can be tilted in only one of the light sources 600, namely, one side light source 601 and the other side light source 602. In the other light source 600, the optical axis can be made to pass through the straight line 810 along the light source.

[0230] In this case, only the optical axis of the light source 600 will tilt towards the side where the camera unit passes through the straight line 830.

[0231] Furthermore, as described above, at least one light source 600 may be positioned above the photographic unit 500, which may be positioned on the same side as the light source 600.

[0232] In this case, the optical axis of the at least one light source 600 will also tilt toward the side where the photographic section passes through the straight line 830.

[0233] Figure 9 This is a diagram showing another structural example of the paper holding device 200. Figure 9 The image shows the state of the paper holding device 200 when viewed from above.

[0234] In this structural example, similarly to the above, one light source 601 is arranged with its optical axis 601A tilted. Furthermore, the other light source 602 is also arranged with its optical axis 602A tilted.

[0235] In this structural example, the position of one light source 601 is different from the position of one photographic unit 501 in the paper transport direction P. Furthermore, the position of the other light source 602 is different from the position of the other photographic unit 502 in the paper transport direction P.

[0236] In this structural example, the light sources 600 are respectively positioned upstream of the photographic unit 500 in the conveying direction of the paper P. Furthermore, in this structural example, the light sources 600 are inclined in a manner that faces downstream in the conveying direction of the paper P.

[0237] This structural example also makes it less likely that backlighting will be directed towards the camera section 500, which is located on the opposite side from the side where the light source 600 is located.

[0238] Furthermore, the light sources 600 can be positioned further downstream than the photographic unit 500. Also, the light sources 600 can be tilted towards the upstream side in the conveying direction of the paper P.

[0239] Furthermore, one light source 600 can be positioned upstream of the photographic unit 500 and tilted downstream in the direction of paper P's transport. Another light source 600 can also be positioned downstream of the photographic unit 500 and tilted upstream in the direction of paper P's transport.

[0240] Moreover, it is also possible to Figure 8 The structure shown is similar to Figure 9 Combine the structures shown.

[0241] In this case, one or both of the two light sources 600 are oriented in either the upward or downward direction, and towards either the downstream or upstream side in the conveying direction of the paper P.

[0242] Furthermore, the wavelength of light emitted from one light source 601 can be different from the wavelength of light emitted from the other light source 602.

[0243] In this case, even without employing the aforementioned processing to reduce the output of the light source 600 or the aforementioned structure to tilt the optical axis of the light source 600, it is possible to suppress the degradation of the quality of the photographic images obtained by the photographic unit 500.

[0244] Alternatively, the above-described process of reducing the output of the light source 600 can be adopted, and the wavelength of the light emitted from one side of the light source 601 can be different from the wavelength of the light emitted from the other side of the light source 602.

[0245] Furthermore, the above-described structure can be used to tilt the optical axis of the light source 600, and the wavelength of the light emitted from one side of the light source 601 can be different from the wavelength of the light emitted from the other side of the light source 602.

[0246] A filter is set when the wavelength of light emitted from one light source 601 is different from the wavelength of light emitted from the other light source 602.

[0247] Specifically, filters that allow light of a specific wavelength to pass through while preventing light of other specific wavelengths from passing through are respectively provided on one side of the imaging section 501 and the other side of the imaging section 502.

[0248] More specifically, a filter is provided in the optical path of the reflected light toward light-receiving elements (not shown) respectively provided on one side of the camera unit 501 and the other side of the camera unit 502.

[0249] When light is shone from the light source 600 onto the paper P, reflected light is generated from the paper P. A filter is provided on the optical path through which this reflected light passes when it is directed toward the light-receiving element provided in the light source 600.

[0250] More specifically, a filter is provided on one side of the camera section 501 to allow light emitted from one side light source 601 to pass through but not light emitted from the other side light source 602.

[0251] Furthermore, a filter is provided on the other side of the camera section 502 to allow light emitted from the other side light source 602 to pass through but not to allow light emitted from the one side light source 601 to pass through.

[0252] In this case, the influence of the other light source 602 on the photographic image obtained by the photographic unit 501 on one side is reduced. Furthermore, in this case, the influence of the one light source 601 on the photographic image obtained by the other photographic unit 502 is reduced.

[0253] [Setting and processing shooting conditions]

[0254] Next, the setting and processing of photography conditions will be explained.

[0255] Furthermore, the CPU11a can set the photographic conditions when the photographic unit 500 takes photographs of the paper P based on information about the loaded paper P, i.e., paper information.

[0256] In this embodiment, for example, as shown in step S102 or step S105 above, the floating paper P is photographed.

[0257] When taking this photograph, the photographic conditions can be set based on the information about the paper P that is the subject of the photograph, i.e., the paper information.

[0258] The following explains the setting process for photographic conditions when using one side camera unit 501 for photography. The setting process for photographic conditions when using the other side camera unit 502 for photography is the same as that for one side.

[0259] The CPU 11a sets the shooting conditions, for example, regarding the settings of the one-sided light source 601, based on the paper information. Specifically, the CPU 11a sets the output of the one-sided light source 601 based on the paper information.

[0260] In this embodiment, the CPU 11a, for example, acquires information about the color of the paper P loaded in the paper holding device 200, i.e., color information, as paper information.

[0261] Then, CPU11a sets the shooting conditions based on the color information.

[0262] This color information is, for example, input by the user. The CPU11a obtains information about the color of the paper P, i.e., color information, based on the information input by the user.

[0263] The user inputs information about the color of paper P, such as whether the paper P is white or black.

[0264] Color information input by the user, for example via Figure 1 The receiving unit 70 shown is used for this purpose. Furthermore, color information input by the user is performed, for example, via a terminal device such as a PC owned by the user.

[0265] CPU11a receives information from receiving unit 70 or terminal device and acquires color information.

[0266] Additionally, a sensor can be installed in the paper holding device 200 to acquire the color information of the paper P. In this case, the CPU 11a receives information from the sensor and acquires the color information.

[0267] When the color determined by the color information is a color other than white, such as black, gray, or blue, the CPU11a increases the output of the light source 601 on one side compared to the case where the color determined by the color information is white.

[0268] When the color determined by the color information is a color other than white, the paper P is less likely to be reflected in the photographic image obtained by the side photography unit 501 compared to the case where it is white. In this case, the accuracy of determining the state of the floating paper P is easily reduced.

[0269] In contrast, if the output of the light source 601 on one side is increased, the paper P is more easily reflected in the photographic image obtained by the photographic unit 501 on the other side. In this case, it is possible to suppress the decrease in the accuracy of determining the state of the paper P.

[0270] In addition, as a setting for photographic conditions, for example, one can perform... Figure 3 The settings for the side camera unit 501 are shown below.

[0271] When setting the side camera unit 501, the CPU 11a may, for example, change the exposure time in the side camera unit 501. Furthermore, the CPU 11a may, for example, change the aperture in the side camera unit 501 or change the ISO sensitivity of the side camera unit 501.

[0272] Specifically, when the color determined by the color information is a color other than white, the CPU 11a extends the exposure time in the side camera unit 501 compared to the case where the color determined by the color information is white. Furthermore, in this case, the CPU 11a, for example, opens the aperture in the side camera unit 501 or increases the ISO sensitivity in the side camera unit 501.

[0273] In the above, the example of obtaining the color information of paper P was given as an example of paper information. However, it is not limited to this; information about the type of paper can also be obtained as paper information.

[0274] The paper type information is also input by the user, just as described above. Alternatively, the paper type information is acquired by a sensor.

[0275] When obtaining information about the type of paper, such as whether paper P is plain paper or whether paper P is an OHP sheet, OHP sheet refers to a transparent sheet used in overhead projectors.

[0276] Even if the photographic conditions are set according to the information of the paper type, it is possible to suppress the degradation of photographic image quality.

[0277] When the paper type determined by the paper type information is OHP sheet, the CPU11a increases the output of the light source 601 on one side compared to the case where the paper type is ordinary paper.

[0278] Alternatively, in this case, CPU 11a extends the exposure time in one side of the camera unit 501. Alternatively, in this case, CPU 11a opens the aperture in one side of the camera unit 501 or increases the ISO sensitivity of one side of the camera unit 501.

[0279] In this case, the OHP sheet is easily reflected in the photographic image obtained by the side photographic unit 501.

[0280] [Determination of the processing content used to set the blowing conditions]

[0281] Furthermore, the CPU11a can determine the processing performed when setting the gas blowing conditions based on the paper information.

[0282] exist Figure 5 In steps S101 to S108 shown, the process of setting the blowing conditions as a procedure performed when setting the blowing conditions is explained, which involves setting the blowing conditions after actually blowing gas into the paper P.

[0283] Alternatively, the processing content can be determined based on the paper information, rather than performing the processing uniformly.

[0284] Figure 10 This is a flowchart illustrating the process executed when determining the content to be processed.

[0285] When the processing content is determined based on the paper information, the acquisition unit first acquires information about the paper P loaded in the paper holding device 200, i.e., the paper information (step S301).

[0286] As an acquisition unit, the receiving unit 70 described above can be cited as an example. Furthermore, as an acquisition unit, the sensor described above can be cited as an example.

[0287] Furthermore, it is also conceivable that paper information is input into a terminal device such as a PC. In this case, the receiving unit (not shown) provided in the image forming apparatus 1 is equivalent to the acquiring unit for acquiring paper information.

[0288] Then, in this process, CPU11a determines whether the information determined by the paper information is the first information that was predetermined (S302).

[0289] In step S302, if it is determined that the information determined by the paper information is the first information that has been predetermined, the process proceeds to step S303.

[0290] In step S303, CPU11a determines the processing content as the actual process of blowing gas to paper P using the blowing device 400 and then setting the blowing conditions (S303).

[0291] In this case, execute Figure 5 or Figure 6 The process shown is the process of setting the blowing conditions after actually blowing gas into the paper P.

[0292] Here, as the first piece of information, we can cite information indicating that the color of paper P is white or information indicating that the type of paper P is ordinary paper.

[0293] In step S302, if the information is not identified as the first piece of information, the process proceeds to step S304.

[0294] In step S304, CPU11a determines whether the information determined by the paper information is the pre-defined second information.

[0295] In step S304, if it is determined that the information determined by the paper information is the pre-defined second information, the process proceeds to step S305.

[0296] In step S305, the CPU 11a determines that the processing involves setting the pre-defined blowing conditions to the aforementioned blowing conditions. In other words, in this case, the CPU 11a determines that the processing involves setting the pre-defined blowing conditions to the blowing conditions used when forming the image.

[0297] In addition, if in step S304 it is not determined that the information determined by the paper information is the second information, the process ends after issuing a pre-defined notification to the user indicating that an error has occurred.

[0298] When step S305 is executed, no gas is actually blown; instead, the pre-defined blowing conditions are set to the blowing conditions used when forming the image. In this case, the pre-defined default conditions are set to the blowing conditions used when forming the image. In other words, in this case, a pre-prepared fixed value is set to the blowing conditions used when forming the image.

[0299] As a second piece of information, examples could include information indicating that the color of paper P is a color other than white, or information indicating that the type of paper P is OHP sheet.

[0300] When performing step S305, gas is not blown onto the paper P and photography is not performed by the photography unit 500, but the blowing conditions are set.

[0301] In other words, in this case, the above is not performed. Figure 5 or Figure 6 The process is shown, and the blowing conditions are set.

[0302] When determining the content of the processing performed when setting the blowing conditions based on paper information, for example in Figure 5 Before or before step S101 shown Figure 6 Before step S201, paper information is obtained.

[0303] Then, based on the paper information, the content of the processing performed when setting the blowing conditions is determined.

[0304] When the processing content determined based on paper information is the actual blowing of gas into paper P followed by setting blowing conditions, then proceed as follows: Figure 5 Processing after step S101 or Figure 6 The processing after step S201.

[0305] Furthermore, when the processing content determined based on the paper information is a process of setting blowing conditions without actually blowing gas to the paper P, the default blowing conditions are set as the blowing conditions.

[0306] Consider the following scenario: The second piece of information is determined by the paper information, and the blowing conditions are set after gas is actually blown onto the paper P. In this case, the accuracy of the setting can be assumed to be lower.

[0307] When the information determined by the paper information is the second information, the accuracy of determining the state of the paper P based on the photographic image tends to decrease compared to the case where it is the first information.

[0308] In this case, the accuracy of the blowing conditions setting may become lower.

[0309] Furthermore, in the case of the second information and after actually blowing gas to the paper P, the blowing conditions are set, which requires processing time. On the other hand, it is not easy to improve the accuracy of the blowing conditions setting.

[0310] Therefore, in this processing example, when the information determined by the paper information is the second information, as described above, the process of setting the pre-defined blowing conditions as the blowing conditions is performed.

[0311] In this embodiment, the pre-defined blowing conditions are stored in Figure 2 The secondary storage unit 91 shown. In other words, the default blowing conditions are stored in... Figure 2 The secondary storage unit 91 shown.

[0312] When the information determined by the paper information is the second information, the CPU 11a reads the predetermined conditions stored in the secondary storage unit 91. Then, the CPU 11a sets the read-out predetermined conditions as the blowing conditions used when forming the image.

[0313] 〔other〕

[0314] The above describes a structure in which the camera unit 500, the light source 600, and the blowing device 400 are provided on both sides, one side R1 and the other side R2. However, it is not necessary to provide the camera unit 500, the light source 600, and the blowing device 400 on both sides.

[0315] Alternatively, the camera unit 500, the light source 600, and the blowing device 400 may be installed on only one side, either the R1 side or the R2 side.

[0316] Even in a structure where the camera unit 500, the light source 600, and the blowing device 400 are only provided on one side, the structures and processes described above can be used.

[0317] (Postscript) (1)

[0319] A recording media receiving device, comprising:

[0320] A side light source, which is a light source disposed on one side of the loaded recording medium and irradiates light onto the recording medium;

[0321] A side-mounted camera unit, which is a camera unit disposed on the one side and which takes pictures of the recording medium;

[0322] The other light source is a light source that is disposed on the other side of the loaded recording medium and illuminates the recording medium;

[0323] The other side photography unit, which is a photography unit disposed on the other side and which performs photography of the recording medium; and

[0324] The processor makes the amount of light from the other light source toward the recording medium when the image is captured by the image capture unit on one side less than the amount of light from the other light source toward the recording medium when the image is captured by the image capture unit on the other side. (2)

[0326] According to the recording media accommodating device described in (1), wherein,

[0327] The processor reduces the amount of light from the other light source toward the recording medium by either turning off the other light source or reducing its output. (3)

[0329] A recording media receiving device, comprising:

[0330] A side light source, which is a light source disposed on one side of the loaded recording medium and irradiates light onto the recording medium;

[0331] A side-mounted camera unit, which is a camera unit disposed on the one side and which takes pictures of the recording medium;

[0332] The other light source is a light source disposed on the other side of the mounted recording medium and irradiating the recording medium with light; and

[0333] The other side camera unit is a camera unit located on the other side and used for photographing the recording medium.

[0334] At least one of the one-sided light source and the other-sided light source is configured with its optical axis tilted relative to an imaginary straight line passing through it, the imaginary straight line being a side of the loaded recording medium, extending from one side toward the other side, and / or,

[0335] The wavelength of light emitted from one side of the light source is different from the wavelength of light emitted from the other side of the light source. (4)

[0337] According to the recording media receiving device described in (3), wherein,

[0338] The imaginary straight line passing through the light source on one side also passes through the light source on the other side.

[0339] The light source on one side and the light source on the other side are arranged on the common imaginary straight line that passes through both the light source on one side and the light source on the other side. (5)

[0341] According to the recording media receiving device described in (4), wherein,

[0342] Both the one-sided camera unit and the other-sided camera unit are arranged along a common imaginary straight line along the sides, and both the one-sided camera unit and the other-sided camera unit are located on the common imaginary straight line passing through them, i.e., the straight line through which the camera units pass.

[0343] When comparing the positions of the camera unit along the direction intersecting the extension of the straight line, the position of the camera unit along the straight line differs from the position of the light source along the straight line.

[0344] The optical axis of at least one of the light sources on one side and the light source on the other side is tilted to the side where the photographic part passes through the straight line. (6)

[0346] The recording medium receiving device according to any one of (3) to (5), wherein,

[0347] At least one of the light sources on one side and the light source on the other side is arranged in a shape that faces diagonally upward or diagonally downward. (7)

[0349] According to the recording media receiving device described in (6), wherein,

[0350] On one and the other side, the light source is positioned above or below the photographic unit respectively located on that side.

[0351] The light source is positioned above or below the camera unit and is oriented toward a side of the camera unit that is closer to it than the horizontal plane passing through the imaginary straight line through the light source. (8)

[0353] An image forming apparatus includes: a recording medium receiving device for receiving a recording medium; and an image forming unit for forming an image on a recording medium discharged from the recording medium receiving device, wherein the recording medium receiving device has the structure of any one of (1) to (7).

[0354] According to the recording medium accommodating device involved in (1), compared to a structure in which light emitted from a light source corresponding to one of the multiple photographic sections can easily affect the photography performed by the other photographic sections, the quality of photographic images obtained by the multiple photographic sections can be improved.

[0355] According to the recording medium containing device involved in (2), by controlling the output of the light source on the other side, the amount of light from the light source on the other side toward the imaging section on one side can be reduced.

[0356] According to the recording medium accommodating device involved in (3), compared to a structure in which light emitted from a light source corresponding to one of the multiple photographic sections can easily affect the photography performed by the other photographic sections, the quality of photographic images obtained by the multiple photographic sections can be improved.

[0357] According to the recording medium receiving device involved in (4), compared to the case where there are no light sources on one side and the other side on the common imaginary straight line through which the light source passes, it is easier to make the illumination conditions of the light from one side to the recording medium and the illumination conditions of the light from the other side to the recording medium consistent.

[0358] According to the recording medium accommodating device involved in (5), compared to the case where the optical axis of one light source and the optical axis of the other light source extend along the direction of the photographic section through a straight line, the quality of the photographic image obtained by the multiple photographic sections can be improved.

[0359] According to the recording medium accommodating device involved in (6), compared with the case where both the light source on one side and the light source on the other side are arranged in a horizontal direction, the quality of the photographic images obtained by the multiple photographic sections can be improved.

[0360] According to the recording medium accommodating device involved in (7), compared with the case where both the light source on one side and the light source on the other side are arranged in a horizontal direction, the quality of the photographic images obtained by the multiple photographic sections can be improved.

[0361] According to the image forming apparatus described in (8), compared to a structure in which light emitted from a light source corresponding to one of the multiple photographic sections can easily affect the photography performed by other photographic sections, the quality of photographic images obtained by the multiple photographic sections can be improved.

[0362] The embodiments of the present invention described above are provided for illustrative purposes. Furthermore, these embodiments do not encompass the entirety of the invention, nor do they limit the invention to the disclosed methods. It will be apparent to those skilled in the art that various modifications and variations will be readily understood. These embodiments were chosen and described to most readily explain the principles and applications of the invention. Thus, those skilled in the art can understand the invention through various modifications that are assumed to be optimized for specific uses of various embodiments. The scope of the invention is defined by the foregoing claims and their equivalents.

Claims

1. A recording media receiving device, comprising: A side light source, which is a light source disposed on one side of the loaded recording medium and irradiates light onto the recording medium; A side-mounted camera unit, which is a camera unit disposed on the one side and which takes pictures of the recording medium; The other light source is a light source disposed on the other side of the loaded recording medium and irradiating light onto the recording medium; The other side is a camera unit, which is arranged on the other side and performs photography of the recording medium; and The processor makes the amount of light from the other light source toward the recording medium when the image is captured by the image capture unit on one side less than the amount of light from the other light source toward the recording medium when the image is captured by the image capture unit on the other side.

2. The recording media receiving device according to claim 1, wherein, The processor reduces the amount of light from the other light source toward the recording medium by either turning off the other light source or reducing the output of the other light source.

3. A recording media receiving device, comprising: A side light source, which is a light source disposed on one side of the loaded recording medium and irradiates light onto the recording medium; A side-mounted camera unit, which is a camera unit disposed on the one side and which takes pictures of the recording medium; The other light source is a light source disposed on the other side of the loaded recording medium and irradiating light onto the recording medium; and The other side camera unit is a camera unit located on the other side and used for photographing the recording medium. At least one of the one-sided light source and the other-sided light source is configured with its optical axis tilted relative to an imaginary straight line passing through it, the imaginary straight line being a side of the loaded recording medium, extending from one side toward the other side, and / or, The wavelength of light emitted from one side of the light source is different from the wavelength of light emitted from the other side of the light source.

4. The recording media receiving device according to claim 3, wherein, The imaginary straight line passing through the light source on one side also passes through the light source on the other side. The two light sources are arranged on the imaginary straight line that passes through both the light source on one side and the light source on the other side.

5. The recording media receiving device according to claim 4, wherein, Both the one-sided camera unit and the other-sided camera unit are arranged along a common imaginary straight line along the sides, and both the one-sided camera unit and the other-sided camera unit are located on the common imaginary straight line passing through them, i.e., the straight line through which the camera units pass. When comparing the positions along the direction intersecting the extension direction of the straight line through which the camera unit passes, the position of the camera unit along the straight line is different from the position of the light source along the straight line. The optical axis of at least one of the light sources on one side and the light source on the other side is tilted to the side where the photographic part passes through the straight line.

6. The recording media receiving device according to any one of claims 3 to 5, wherein, At least one of the light sources on one side and the light source on the other side is arranged in a shape that faces diagonally upward or diagonally downward.

7. The recording media receiving device according to claim 6, wherein, On one and the other side, the light source is positioned above or below the photographic unit respectively located on the side. The light source is positioned above or below the camera unit and is oriented toward the side of the camera unit that is closer to it than the horizontal plane passing through the imaginary straight line through the light source.

8. An image forming apparatus comprising: Recording media receiving device, for receiving recording media; and The image forming unit forms an image on the recording medium discharged from the recording medium receiving device. The recording media receiving device has the structure of any one of claims 1 to 7.

Images