JP2016224166A - Image forming apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the details of an image indiscriminable and easily discriminate a printed surface.SOLUTION: When backing paper printing is set, a scanner 110 for backing paper printing reads an image of a backing sheet 200a, the scanner being arranged on a conveyance path 109a of sheets (backing sheet 200a or sheet 200) present from a paper feed cassette 300 to a printing mechanism part 105 of a printer part. An image recognition processing part recognizes the presence or absence of an image from image data read by the scanner 110 for backing paper printing, and when an image is present, performs processing of forming a black solid pattern or a watermark according to the details of the image. A system control part, after the image recognition processing part completes the processing of forming a black solid pattern or a watermark, instructs the printer part to print the black solid pattern or watermark on a printed surface of the backing sheet 200a.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an image forming apparatus that reads a document and generates image data.

  In an image forming apparatus that is an MFP (Multifunction Peripheral) such as a printer, a multi-function printer, or a multifunction peripheral, a backing paper may be used from the viewpoint of resource saving.

  In this case, printing is performed on the unused side. However, when checking the printed paper, it may be difficult to know which side is printed. In addition, when a sheet on which printed personal information or confidential information such as outside secrets or confidential information is printed is used as a backing paper, personal information or confidential information may leak outside. Further, if paper on which personal information or confidential information is printed is not used as a backing paper but discarded using a shredder or the like, the effect of resource saving is diminished.

  In order to solve such problems, in Patent Document 1, personal information and confidential information cannot be read by forming a black solid pattern for a character string that is considered personal information or confidential information on an imaged paper. Alternatively, an image-formed paper processing apparatus that is difficult to read is proposed.

JP 2001-228751

  In the image-formed paper processing apparatus of Patent Document 1 described above, a black solid pattern is formed on a character string of personal information and confidential information, so that the personal information and confidential information can be reliably made unreadable or difficult to read. .

  However, in this image-formed paper processing apparatus, a black solid pattern is formed only for the character strings of personal information and confidential information. A solid pattern is not formed.

  In this case, when the image-formed paper is used as the backing paper, there is a problem that it becomes difficult to know which side is printed after the image formation.

  The present invention has been made in view of such a situation, and an object thereof is to provide an image forming apparatus capable of solving the above problems.

An image forming apparatus according to the present invention is arranged on a paper conveyance path from a paper feed cassette to the printing mechanism unit, and has a printer unit having a printing mechanism unit that performs printing on paper, and is set for backing paper printing. The backside printing scanner that reads the backside image, and the presence or absence of the image is recognized from the image data read by the backside printing scanner, and if there is an image, the invisible pattern or An image recognition processing unit that performs watermark formation processing, and the invisible pattern for the printed surface of the backing paper to the printer unit when the invisible pattern or watermark formation processing by the image recognition processing unit is completed Or a system control unit for instructing printing of a watermark.
Further, when the character recognition unit recognizes a character string of personal information and / or a character string of confidential information by character recognition, the image recognition processing unit makes the character string of the personal information and / or the character string of confidential information invisible. A pattern forming process is performed.
The image recognition processing unit may perform an invisible pattern forming process on the individual face image when the individual face image is recognized by image recognition.
In addition, when the image recognition processing unit recognizes that there is a character string around the person's face image by image recognition, the image recognition processing unit performs an invisible pattern forming process on the recognized character string. .
In addition, when the image recognition processing unit does not recognize the character string of the personal information and the character string of the confidential information and the face image of the individual, the watermark is formed on the printed surface of the backing paper. It is characterized by performing processing.
In the image forming apparatus of the present invention, when the setting for printing on the backing paper is performed, the backing paper printing scanner arranged on the paper transport path from the paper feed cassette to the printing mechanism of the printer unit reads the image on the backing paper. . The image recognition processing unit recognizes the presence / absence of an image from the image data read by the backing paper printing scanner, and if there is an image, performs an invisible pattern or watermark formation process according to the content of the image. The system control unit instructs the printer unit to print the invisible pattern or the watermark on the printed surface of the back paper when the invisible pattern or watermark forming process by the image recognition processing unit is completed.
As described above, when the image recognition processing unit performs the invisible pattern forming process according to the content of the image, the invisible pattern is printed on the printed surface of the backing paper, so that the content of the image cannot be determined. . In addition, when the image recognition processing unit performs the watermark formation process according to the content of the image, the watermark is printed on the printed side of the back paper. Is easily discriminated.

  According to the image forming apparatus of the present invention, the image recognition processing unit performs the invisible pattern or watermark forming process according to the content of the image, so that the image content can be made indistinguishable and printed together. Surface discrimination can be easily performed.

1 is a diagram illustrating an embodiment in which an image forming apparatus of the present invention is applied to an MFP. FIG. 2 is a diagram for describing an internal configuration of the MFP of FIG. 1. FIG. 2 is a diagram for explaining a backing paper printing process by the MFP of FIG. 1. FIG. 2 is a diagram for explaining a backing paper printing process by the MFP of FIG. 1. 3 is a flowchart for explaining a backing paper printing process by the image forming apparatus of FIG. 1.

  Hereinafter, an image forming apparatus according to an embodiment of the present invention will be described with reference to FIGS. An example of the image forming apparatus in the following description is an MFP (Multifunction Peripheral) which is a composite peripheral device equipped with a plurality of functions such as copying, printing, scanner, and FAX (Facsimile). .

  First, as shown in FIG. 1, a paper discharge tray 102, a manual feed tray 103, and a panel unit 104 are provided in the upper part of the MFP main body 101 of the MFP 100. The paper 200 set on the manual feed tray 103 is conveyed to the side of the printing mechanism unit 105, which will be described later, on the conveyance roller 108c disposed on the conveyance path 109d.

  Inside the MFP main body 101, a printing mechanism unit 105 having a photosensitive drum or the like is arranged. Below the printing mechanism unit 105, a plurality of paper feed cassettes 300 that accommodate a plurality of backing papers 200 a or papers 200 are arranged one above the other. These paper feed cassettes 300 are detachable from the MFP main body 101. Each of the paper feed cassettes 300 is provided with a backing paper 200a fed from the lower paper feed cassette 300 or a shared transport path 300a of the paper 200.

  In addition, a feeding roller 106 and a transport roller 107 are provided inside the MFP main body 101. Note that the feed roller 106 and the transport roller 107 are arranged corresponding to the mounting positions of the respective paper feed cassettes 300.

  In addition, a conveyance path 109 a extending from the shared conveyance path 300 a of each paper feed cassette 300 to the printing mechanism unit 105 is provided inside the MFP main body 101. A backing paper printing scanner 110 is disposed on the conveyance path 109 a between the paper feed cassette 300 and the printing mechanism unit 105. This backing paper printing scanner 110 reads an image on one side of the backing paper 200a conveyed from the paper feed cassette 300 when setting of backing paper printing described later is performed. Note that the backing paper printing scanner 110 is not limited to reading an image on one side of the backing paper 200a, but may be a scanner that simultaneously reads both sides of the backing paper 200a. A transport roller 108 a is disposed on the transport path 109 a between the paper feed cassette 300 and the printing mechanism unit 105.

  A transport roller 108b is disposed on a transport path 109b between the printing mechanism unit 105 and a reversing mechanism unit 120 described later. The conveyance path 109b is continuous with the conveyance path 109a. Thereby, the backing paper printing scanner 110 can read the image on the other side of the backing paper 200a reversed by the reversing mechanism unit 120.

  The paper feed cassette 300 is provided with a lift plate 301 that pushes up a portion facing the feeding roller 106 by a lift member 111 provided inside the MFP main body 101. When the lift plate 301 is pushed up by the lift member 111, the leading end portion of the paper 200 on the lift plate 301 is pressed against the feeding roller 106. As a result, the paper 200 in the paper feed cassette 300 is fed out one by one by the feeding roller 106. FIG. 1 shows a case where the back paper 200 a is stored in the uppermost paper feed cassette 300 and the unused paper 200 is stored in the other paper feed cassette 300.

  A reversing mechanism 120 and a tray holder 121 are provided on the side surface of the MFP main body 101. The reversing mechanism unit 120 reverses the printing surface (printed surface) of the backing paper 200a or the paper 200 and sends it to the transport path 109c. By the reversing mechanism unit 120, the printing surface is reversed, so that double-sided printing of the paper 200 is possible. In addition, the reversing mechanism unit 120 reverses the printing surface, so that printing on the unused surface of the backing paper 200a is possible as will be described in detail later.

  A plurality of paper discharge trays 122 a to 122 f are attached to the tray holder 121. Then, the backing paper 200 a or the paper 200 printed by the printing mechanism unit 105 is distributed to any one of the paper discharge trays 122 a to 122 f by the tray holder 121.

  Next, the configuration of the control system of MFP 100 will be described with reference to FIG. The MFP 100 includes a control unit 130, a scanner unit 150, a printer unit 151, a FAX (Facsimile) unit 152, a backing paper printing scanner 110, a panel unit 104, a reversing mechanism unit 120, and an HDD (Hard disk drive) 154.

  The scanner unit 150 inputs image data of a document (not shown) read by an image sensor (not shown) to the control unit 130. That is, the scanner unit 150 converts an image signal of a document (not shown) from an image sensor (not shown) into digital image data and sequentially inputs the digital image data to the control unit 130.

  The printer unit 151 includes the printing mechanism unit 105 described above, and prints an image on the back paper 200 a or the paper 200 based on the image data output from the control unit 130. The FAX unit 152 transmits the image data output from the control unit 130 to the counterpart facsimile via the telephone line, and receives the image data from the counterpart facsimile and inputs it to the control unit 130.

  As described above, the back paper printing scanner 110 reads an image of the back paper 200a conveyed from the uppermost paper feed cassette 300 when setting of back paper printing described later is performed. The panel unit 104 displays operation buttons for selecting any of the printer function, the FAX function, and the scan function of the MFP 100 and performing various settings. In addition, the panel unit 104 displays operation buttons for setting double-sided printing and backing paper printing.

  As described above, the reversing mechanism unit 120 reverses the printing surface of the backing paper 200a or the paper 200 and sends it to the conveyance path 109c. By the reversing mechanism unit 120, the printing surface is reversed, so that double-sided printing of the paper 200 is possible. Further, the reversing mechanism unit 120 allows the printing surface to be reversed, so that printing on the unused surface of the backing paper 200a becomes possible. The HDD 154 stores application programs for providing various functions of the MFP 100. The HDD 154 is provided with a user box and the like.

  The control unit 130 is a processor that controls the overall operation of the MFP 100, and includes a scanner control unit 131, a printer control unit 132, a FAX control unit 133, a RAM (Random Access Memory) 134, a ROM (Read Only Memory) 135, and a backing paper print Scanner control unit 136, image recognition processing unit 137, panel operation control unit 138, reversing mechanism control unit 139, HDD control unit 140, and system control unit 141. These are connected to the data bus 142.

  The scanner control unit 131 controls the reading operation of the scanner unit 150. The printer control unit 132 controls the printing operation of the printer unit 151. The FAX control unit 133 controls image data transmission / reception operations by the FAX unit 152.

  The RAM 134 is a work memory for executing a program. The ROM 135 stores a control program for checking the operation of each unit and the like, and the backing paper printing scanner control unit 136 reads an image on the backing paper 200 a conveyed from the paper feeding cassette 300.

  The back paper printing scanner control unit 136 causes the back paper printing scanner 110 to read an image of the back paper 200 a when the back paper printing is set by the panel unit 104. The image recognition processing unit 137 performs image processing on the image data of the backing paper 200 a read by the scanner unit 150. The image recognition processing unit 137 recognizes the presence or absence of an image from the image data read by the backing paper printing scanner 110. The image recognition processing unit 137 recognizes that there is an image from the image data read by the backing paper printing scanner 110, as will be described in detail later. The image recognition processing unit 137 performs character recognition and image recognition of the image, and a black solid pattern described later. A forming process 203 (an example of an invisible pattern) and a forming process of the watermark 204 are performed.

  Panel operation control unit 138 controls the display operation of panel unit 104. The reversing mechanism control unit 139 controls the reversing mechanism unit 120 to reverse the back paper 200a or the paper 200 and send it to the printing mechanism unit 105 side when the panel unit 104 is set for duplex printing or backing paper printing. The reversing mechanism control unit 139 controls the reversing mechanism unit 120 to perform printing if there is no image in the image data read by the back paper printing scanner 110 before starting printing when the back paper printing is set. The backing paper 200a printed by the mechanism unit 105 is sent out to the tray holder 121 side.

  The HDD control unit 140 controls writing and reading of data with respect to the HDD 154. The system control unit 141 controls the linking operation of each unit.

  Next, a black solid pattern 203 forming process and a watermark 204 forming process performed by the image recognition processing unit 137 will be described with reference to FIGS.

  First, FIG. 3A shows an image of the backing paper 200 a read by the backing paper printing scanner 110. Here, if the image recognition processing unit 137 recognizes that there is an image, it performs character recognition of the image. When the image recognition processing unit 137 recognizes that the character string 201 of personal information and the character string 202 of confidential information exist as a result of character recognition, as shown in FIG. A black solid pattern 203 is formed on the information character string 202. As a result, the character string 201 of personal information and the character string 202 of confidential information are made indistinguishable.

Further, as shown in FIG. 3C, if the image recognition processing unit 137 does not recognize the character string 201 of personal information or the character string 202 of confidential information even after performing character recognition, the image recognition processing unit 137 in FIG. As shown, the watermark 204 is formed on the upper right of the backing paper 200a. This
When the printed back paper 200a is confirmed, it can be easily understood which side the printing is performed on. As shown in FIG. 3D, the watermark 204 is not limited to the upper right of the backing paper 200a, but may be an arbitrary place such as the center of the backing paper 200a.

  Further, as shown in FIG. 4A, when the image recognition processing unit 137 recognizes that there is an image, the image recognition processing unit 137 performs image recognition of the image. When the image recognition processing unit 137 recognizes that there is an individual face image 205 or the like as a result of the image recognition, as shown in FIG. 4B, the black solid pattern 203 is formed on the individual face image 205. I do. As a result, the individual face image 205 cannot be identified.

  When the image recognition processing unit 137 recognizes that there is a character string 206 around the individual face image 205 as shown in FIG. 4A, the character string as shown in FIG. 4C. The black solid pattern 203 may be formed on 206. This further makes it impossible to determine information related to the individual. Further, when the image recognition processing unit 137 does not recognize the personal face image 205 or the like, as shown in FIG.

  Next, the operation of the back paper printing process will be described with reference to FIG. In the following description, it is assumed that the backing paper 200a is accommodated in the upper sheet cassette 300.

(Step S101)
First, the system control unit 141 determines whether a setting for backing paper printing has been performed via the panel unit 104. The system control unit 141 waits until the setting of the back paper printing is performed (step S101: No). When the system control unit 141 determines that the setting of the back paper printing is performed (step S101: Yes), the system control unit 141 proceeds to step S102.

(Step S102)
Next, the system control unit 141 controls a driving mechanism (not shown) to transport the backing paper 200a from the paper feed cassette 300 in which the backing paper 200a is accommodated. At this time, the backing paper 200a in the paper feeding cassette 300 is fed out one by one by the feeding roller 106, and is conveyed from the shared conveyance path 300a to the conveyance path 109a.

(Step S103)
Next, the system control unit 141 controls the back paper printing scanner control unit 136 to perform reading by the back paper printing scanner 110 and determines whether the reading by the back paper printing scanner 110 has been performed. The system control unit 141 waits until reading by the backing paper printing scanner 110 is performed (step S103: No), and determines that reading by the backing paper printing scanner 110 has been performed (step S103: Yes), the process proceeds to step S104. Move.

(Step S104).
Next, the system control unit 141 determines whether there is an image. In this case, the image recognition processing unit 137 recognizes the presence / absence of an image from the image data read by the backing paper printing scanner 110. When the image recognition processing unit 137 recognizes that there is an image, the system control unit 141 determines that there is an image (step S104: Yes), and proceeds to step S105. In contrast, when the image recognition processing unit 137 recognizes that there is no image, the system control unit 141 determines that there is no image (step S104: No), and proceeds to step S112.

(Step S105)
Next, the system control unit 141 causes the image recognition processing unit 137 to perform character recognition. In this case, the image recognition processing unit 137 performs character recognition of the image of the image data read by the backing paper printing scanner 110.

(Step S106)
The image recognition processing unit 137 determines whether there is a character string of personal information. When the image recognition processing unit 137 determines that there is a character string of personal information (step S106: Yes), the process proceeds to step S107. On the other hand, when the image recognition processing unit 137 determines that there is no character string of personal information (step S106: No), the process proceeds to step S108.

(Step S107)
As shown in FIG. 3B, the image recognition processing unit 137 forms a black solid pattern 203 in the character string of personal information.

(Step S108)
The image recognition processing unit 137 determines whether there is a character string of confidential information. If the image recognition processing unit 137 determines that there is a character string of confidential information (step S108: Yes), the process proceeds to step S109. On the other hand, when the image recognition processing unit 137 determines that there is no character string of personal information (step S108: No), the process proceeds to step S113.

(Step S109)
As shown in FIG. 3B, the image recognition processing unit 137 forms a black solid pattern 203 in the character string of confidential information.

(Step S110)
When the formation of the black solid pattern 203 by the image recognition processing unit 137 ends, the system control unit 141 instructs the printer control unit 132 to perform printing. In this case, the printer control unit 132 performs printing processing of the black solid pattern 203 on the printed surface by the printer unit 151 having the printing mechanism unit 105 based on the print data subjected to image processing from the image recognition processing unit 137.

(Step S111)
When the printing process of the black solid pattern 203 by the printer control unit 132 is completed, the system control unit 141 controls the reversing mechanism unit 120 to reverse the printed surface of the backing paper 200a. Then, the backing paper 200a whose printed surface is reversed is conveyed along the conveyance path 109c to the printer unit 151 having the printing mechanism unit 105.

(Step S112)
When the backing paper 200a is transported along the transport path 109c, the printer unit 151 having the printing mechanism unit 105 performs a printing process on the unused surface of the paper 200. The image data printed here may be data stored in the user box of the HDD 154 or data transmitted from the portable terminal to the MFP 100. In either case, data to be printed can be selected by setting from the panel unit 104.

(Step S113)
If the system control unit 141 determines in step S108 that there is no confidential information, the system control unit 141 determines whether there is a face image. In this case, when the image recognition processing unit 137 recognizes that there is a face image from the image data read by the backing paper printing scanner 110, the system control unit 141 determines that there is a face image (step S113: Yes), and the step The process moves to S114. In contrast, if the image recognition processing unit 137 does not recognize that there is a face image from the image data read by the backing paper printing scanner 110, the system control unit 141 determines that there is no face image (step S113: No). ), The process proceeds to step S115.

(Step S114)
As shown in FIGS. 4A and 4B, the image recognition processing unit 137 forms a black solid pattern 203 on the individual face image 205. In this case, as described above, the image recognition processing unit 137 surrounds the character string 206 around the individual face image 205 (for example, a paragraph adjacent to the face image 205, particularly a paragraph adjacent to the top or bottom of the face image 205). When it is recognized that there is a black solid pattern 203, the character string 206 may be formed as shown in FIG. Note that after the black solid pattern 203 is formed on the personal face image 205, the process proceeds to steps S110 to S112.

(Step S115)
When the image recognition processing unit 137 does not recognize the personal face image 205, the image recognition processing unit 137 forms the watermark 204 on the upper right side of the backing paper 200a as shown in FIG. Thereby, when confirming the back paper 200a after printing, it can be easily understood which side is printed. Note that the watermark 204 is not limited to the upper right of the backing paper 200a as shown in FIG. 3D, and may be an arbitrary place such as the center of the backing paper 200a. In addition, after forming the watermark 204, the process proceeds to steps S110 to S112.

  As described above, in the present embodiment, when the setting of the back paper printing is performed, the paper (back paper 200a or the paper 200) from the paper feed cassette 300 to the printing mechanism unit 105 of the printer unit 151 is arranged on the transport path 109a. The back paper printing scanner 110 thus read reads an image on the back paper 200a. The image recognition processing unit 137 recognizes the presence / absence of an image from the image data read by the backing paper printing scanner 110, and performs processing for forming the black solid pattern 203 or the watermark 204 according to the content of the image when there is an image. . Then, when the formation of the black solid pattern 203 or the watermark 204 by the image recognition processing unit 137 is completed, the system control unit 141 instructs the printer unit 151 to print the black solid pattern 203 or the watermark on the printed surface of the backing paper 200a. Instructs the printing of 204.

  As described above, when the image recognition processing unit 137 performs the formation process of the black solid pattern 203 according to the content of the image, the black solid pattern 203 is printed on the printed surface of the backing paper 200a, so that the content of the image is changed. It becomes indistinguishable.

  That is, when the image recognition processing unit 137 recognizes the character string 201 of personal information and / or the character string 202 of confidential information by character recognition, Since the solid pattern 203 is formed, the character string 201 of the personal information and / or the character string of the confidential information 202 can be made indistinguishable.

  Further, when the image recognition processing unit 137 recognizes the individual face image 205 by image recognition, the process of forming the black solid pattern 203 is performed on the individual face image 205, so that the individual face image 205 cannot be identified. be able to.

  Further, when the image recognition processing unit 137 recognizes that the character string 206 exists around the individual face image 205 by image recognition, a black solid pattern forming process is performed on the recognized character string 206, so that the individual identification is performed. Can be further made indistinguishable.

  When the image recognition processing unit 137 does not recognize the personal information character string 201, the confidential information character string 202, and the personal face image 205, the watermark 204 is formed on the printed surface of the back paper 200a. Therefore, when the back paper 200a after printing is confirmed, the printed surface can be easily identified.

  When the image recognition processing unit 137 recognizes the character information string 201 of personal information, the character string 202 of confidential information, and the personal face image 205, the black solid pattern and the watermark 204 may be formed.

  In the above embodiment, the black solid pattern is used as the invisible pattern. However, the character information 201 of personal information and / or confidential information 202, the personal face image 205, the surroundings of the personal face image, etc. are invisible. Other invisible patterns may be used as long as a necessary print portion cannot be discriminated. For example, a pattern that can make a print portion that needs to be invisible indistinguishable may be used as the invisible pattern. Further, a solid pattern having the same color as that of the printed portion that needs to be invisible may be used as the invisible pattern.

  Further, the confidential information character string 202 may be a word, a sentence, or a paragraph. For example, the image recognition processing unit 137 may recognize a keyword indicating confidential information registered in the database and a sentence or paragraph including the keyword as the character string 202 of confidential information.

100 MFP
DESCRIPTION OF SYMBOLS 101 Main body 102 Paper discharge tray 103 Manual feed tray 104 Panel part 105 Printing mechanism part 106 Feed roller 107 Conveyance rollers 108a-108c Conveyance rollers 109a-109d Conveyance path 110 Back paper printing scanner 111 Lift member 120 Reverse mechanism part 121 Tray holder 122a- 122f Paper discharge tray 130 Control unit 131 Scanner control unit 132 Printer control unit 133 FAX control unit 134 RAM
135 ROM
136 Back side printing scanner control unit 137 Image recognition processing unit 138 Panel operation control unit 139 Reverse mechanism control unit 140 HDD control unit 141 System control unit 142 Data bus 150 Scanner unit 151 Printer unit 152 FAX unit 154 HDD
200 Paper 200a Backing paper 201, 202, 206 Character string 203 Black solid pattern 204 Water mark 205 Face image 206 Character string 300 Paper feed cassette 300a Shared transport path 301 Lift plate

Claims (5)

A printer unit having a printing mechanism unit for printing on paper;
A backside printing scanner that is arranged on a paper conveyance path from a paper feed cassette to the printing mechanism section and reads an image of the back paper when setting of back paper printing is performed;
An image recognition processing unit that recognizes the presence or absence of an image from the image data read by the backing paper printing scanner, and performs an invisible pattern or watermark formation process according to the content of the image if there is an image;
A system control unit that instructs the printer unit to print the invisible pattern or the watermark on the printed surface of the backing paper when the invisible pattern or watermark formation processing by the image recognition processing unit is completed; An image forming apparatus comprising the image forming apparatus.   When the image recognition processing unit recognizes a character string of personal information and / or a character string of confidential information by character recognition, the image recognition processing unit The image forming apparatus according to claim 1, wherein a forming process is performed.   3. The image formation according to claim 1, wherein the image recognition processing unit performs an invisible pattern formation process on the individual face image when the individual face image is recognized by image recognition. apparatus.   The image recognition processing unit, when recognizing that a character string exists around the person's face image by image recognition, performs an invisible pattern forming process on the recognized character string. The image forming apparatus according to 3.   The image recognition processing unit, when not recognizing the character string of the personal information and the character string of the confidential information, and the face image of the individual, forms the watermark on the printed surface of the backing paper. The image forming apparatus according to claim 2, wherein the image forming apparatus is performed.

Images