JP2008199214A - Cleaning tool for image reader - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cleaning tool for an image reader which is capable of surely removing dirt on the sheet contact face of a glass member. <P>SOLUTION: An image formed on a sheet is read by an image reading means while bringing the sheet into contact with the glass member. The sheet contact face of the glass member is cleaned by a cleaning tool which has a scraping member for scraping dirt on the sheet contact face and a wiping member 103 for wiping away dirt on the sheet contact face and is so configured that the scraping member 105 and the wiping member 103 are simultaneously brought into press-contact with the sheet contact face. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cleaning tool for an image reading apparatus that reads an image on a sheet, and more particularly to a cleaning tool for cleaning a sheet contact surface of a glass member that comes into contact with a sheet when the image is read.

  2. Description of the Related Art Conventionally, some copiers and the like are provided with an image reading device that reads an image of a document that is a sheet. As such an image reading apparatus, a so-called “flow-reading” is performed, in which an original is conveyed on a contact glass, which is a glass member, by an original conveying apparatus, and an image of the original is read by an image reading means positioned below the contact glass. There is something to do. In addition, there is a type in which an original is placed on an original platen glass, which is a glass member, and fixed reading is performed to read the original while moving an image reading unit in the sub-scanning direction.

  By the way, a document read by the image reading apparatus may have various deposits such as carbon such as a pencil, ink such as a ballpoint pen that is not sufficiently dried, correction liquid, and glue. Such deposits come into contact with the sheet stack surface of the platen glass when the document is placed on the platen glass for fixed reading, and the document contacts the contact glass in the case of flow reading. However, when passing through, it may adhere to the sheet contact surface of the contact glass.

  Here, when the deposit is present on the sheet stacking surface of the platen glass or the sheet contact surface of the contact glass in this way, the deposit is read together with the document image, so that an unnecessary image appears in the read image. In particular, in the case of flow reading, the deposit on the sheet contact surface of the contact glass appears as a streak-like image in the document conveying direction.

  For this reason, there has conventionally been a device provided with a cleaning tool that contacts the contact glass and cleans the sheet contact surface of the contact glass (see Patent Document 1).

Japanese Patent Laid-Open No. 11-072975

  By the way, since such a conventional cleaning tool uses a material made of a soft sponge or cloth, the cleaning tool cleans carbon such as a pencil, ink such as a ballpoint pen that is not sufficiently dried. It is possible to exert a sufficient effect.

  However, when the cleaning tool is made of such a material, a sufficient cleaning effect can be obtained against dirt such as correction liquid and glue that adheres to the sheet contact surface of the contact glass and adheres by drying. I can't.

  Accordingly, the present invention has been made in view of such a current situation, and provides a cleaning tool for an image reading apparatus that can reliably remove stains on a sheet contact surface of a glass member such as a contact glass or a platen glass. It is intended to provide.

  The present invention includes an image reading unit that reads an image on a sheet, and a glass member provided to face the image reading unit, and the sheet is formed on the sheet by the image reading unit while contacting the sheet with the glass member. In a cleaning tool of an image reading apparatus that reads an image, a scraping member that scrapes off dirt on the sheet contact surface of the glass member, a wiping member that wipes off dirt on the sheet contact surface, and the wiping member and the scraping member are held. And the scraping member abuts against the sheet contact surface, and at the same time the wiping member is in pressure contact with the sheet contact surface.

  By configuring the cleaning tool for cleaning the sheet contact surface of the glass member as in the present invention so that the scraping member abuts on the sheet contact surface and the wiping member is in pressure contact with the sheet contact surface. The dirt on the sheet contact surface can be surely removed.

  FIG. 1 is a diagram showing a schematic configuration of an image forming apparatus provided with an image reading apparatus according to a first embodiment of the present invention.

  In FIG. 1, reference numeral 200 denotes a copying machine, and 201 denotes a copying machine main body (hereinafter referred to as an apparatus main body). The apparatus main body 201 is provided with an image forming unit 203 for forming an image on a sheet. The image reading device 202 is arranged. Further, a cassette feeding device 204 for feeding sheets to the image forming unit 203 is disposed below the apparatus main body 201.

  Here, the image forming unit 203 includes an electrophotographic photosensitive drum (hereinafter referred to as a photosensitive drum) 10, a developing device 11, and the like. When the surface of the photosensitive drum 10 is scanned with the laser beam emitted from the laser scanner 3, a latent image is formed on the surface of the photosensitive drum. A toner image is formed on the surface of the photosensitive drum. After that, when the sheet is conveyed to a transfer portion constituted by the photosensitive drum 10 and the transfer charger 6, the toner image formed on the photosensitive drum 10 is transferred to the sheet.

  On the other hand, the cassette feeding device 204 is for feeding sheets to the transfer unit. The cassette 4 loaded on the bottom of the apparatus main body 201 and the feeding roller 4a for feeding the sheets stored in the cassette 4 are provided. And.

  The image reading device 202 is for reading a document image placed on the platen glass 22 or a document image by flow reading. Then, after reading the original image, the image information is converted into an electrical image signal, and the image information converted into the electrical image signal is input to the laser scanner 3 of the image forming unit 203 described above. I have to.

  Next, an image forming operation of the copying machine 200 configured as described above will be described.

  First, when image information of a document is read by the image reading device 202, the image information is subjected to image processing, converted into an electric signal, and transmitted to the laser scanner 3 of the image forming unit 203. Note that the image information may be input to the image forming unit 203 from an external device such as a personal computer (not shown).

  The image forming unit 203 scans the surface of the photosensitive drum 10 with a laser beam corresponding to the image information emitted from the laser scanner 3 to form a latent image on the photosensitive drum. Is developed by the developing device 11. As a result, a toner image is formed on the surface of the photosensitive drum 10.

  On the other hand, in parallel with this operation, the cassette feeding device 204 feeds the sheet by the feeding roller 4a. The sheet fed in this way is conveyed to the registration roller 5. At this time, the registration roller 5 is stopped, so that the skew of the sheet is corrected. At this position, the registration roller 5 stops and waits.

  Thereafter, the registration roller 5 rotates, and the waiting sheet is fed to the transfer portion constituted by the photosensitive drum 10 and the transfer charger 6 at the same timing. The toner image on the body drum is transferred to the sheet.

  Then, the sheet on which the toner image is transferred in this manner is conveyed to the fixing device 7, and when passing through the fixing device 7, the toner image is fixed on the sheet surface by being heated and pressurized. The sheet on which the toner image is fixed in this manner is then discharged to the discharge tray 9 by the discharge roller 8.

  As shown in FIG. 2, the image reading apparatus 202 has an image reading apparatus main body 202A and an automatic document feeder which is disposed above and disposed on the back side of the image reading apparatus main body through a hinge (not shown). It is composed of a feeding device (hereinafter referred to as ADF) 40.

  Here, the image reading device 202 includes a first image reading means 21 on the image reading device main body 202A side and a second on the ADF 40 side in order to read an image of the document D which is a sheet placed on the document placing table 12. An image reading means 41 is provided.

  The image reading apparatus 202 sequentially conveys the documents D placed on the document placing table 12 provided in the ADF 40 one by one, and reads the image by the first image reading means 21 stopped at a predetermined position. It has a mode (hereinafter referred to as “reading mode”).

  Further, the double-sided sheet-through reading is performed in which the original D placed on the original placing table 12 is sequentially conveyed one by one, and both the first image reading unit 21 and the second image reading unit 41 read the front and back images of the original. Mode (hereinafter referred to as double-sided scanning mode). Furthermore, a BOOK reading mode (hereinafter, referred to as a fixed reading mode) for reading the document image placed on the document table glass 22 by moving the first image reading means 21 is provided.

  The image reading apparatus main body 202A includes the first image reading means 21 described above and the document table glass 22 on the upper surface. Furthermore, a first contact glass 23a, which is a glass member that comes into contact with the original when the first image reading means 21 reads an image in the flow reading mode, is provided on the upper side of the original table glass 22 in the original conveying direction. .

  Here, the first image reading means 21 is for reading an image on the front surface (first surface) of the document. An illumination unit 21c that illuminates the document surface, an optical system 21f constituted by a plurality of mirrors 21d and an imaging lens 21e, and a line CCD (Charge Coupled Device) 21g in which a plurality of photoelectric conversion elements are arranged in a line are provided. Yes. Reference numeral 21b denotes an optical box 21b in which these illumination means 21c, mirror 21d and the like are accommodated.

  In the case of the fixed reading mode, the first image reading unit 21 is indicated by an arrow F while irradiating the document D placed on the document table glass 22 which is a glass member with light by the illumination unit 21c. They are moved in the scanning direction. The light reflected from the document surface after being irradiated from the illumination unit 21c is imaged on the line CCD 21g by the optical system 21f, and image information on one surface of the document is photoelectrically converted and converted into an electrical signal. .

  In the case of the flow-reading mode, the original D is conveyed by illuminating means 21c to the original D conveyed by the ADF 40 with the first image reading means 21 stopped below the first contact glass 23a. The image is read.

  FIG. 3 is a diagram illustrating a configuration of a driving unit for moving the first image reading unit 21. In FIG. 3, reference numeral 24 denotes a guide rail, and the first image reading unit 21 is configured to move along the guide rail 24. Reference numeral 27 denotes an endless timing belt stretched around the pulleys 25a and 26, and the first image reading means 21 is fixed to the timing belt 27 at a fixing portion 21h. A tensioner 28 applies tension to the timing belt 27.

  When the pulley 25a is rotated by receiving a driving force from the driving motor 29, the first reading means 21 is configured to move in the direction of arrow F.

  The ADF 40 conveys the original and passes it over the first contact glass so that the original image can be read by the first image reading means 21 stopped below the first contact glass 23a in the flow reading mode. Is for. Further, in the double-sided scanning mode, the document is conveyed and passed through the first contact glass and then conveyed to the second image reading means 41.

  As shown in FIG. 2, the ADF 40 has a substantially U-shaped document conveyance path (hereinafter referred to as a U-turn path) 40a, and a pickup for feeding the document D on the document table 12 upstream of the U-turn path 40a. A roller 43 is provided. Further, on the upstream side of the U-turn path 40a, a separation roller 44a and a reverse rotation roller 44b that are pressed against each other for separating the sent document D into one sheet, and a document presence / absence sensor 45 that detects the presence or absence of the document D are provided. Yes.

  On the upstream side of the first contact glass 23 a, a first transport roller pair 46 that transports the document D toward a first reading unit that reads an image by the first image reading unit 21, a leading end portion and a trailing end portion of the document D A first document edge sensor 47 for detection is provided. Further, on the downstream side of the first contact glass 23a, a second transport roller pair 48, and a second document edge sensor 49 for detecting the leading edge and the trailing edge of the document D are provided.

  Further, on the downstream side of the second transport roller pair 48, a third transport roller pair 51 that discharges the document D onto the document discharge tray 50 is provided. Between the second conveyance roller pair 48 and the third conveyance roller pair 51, there is provided a second image reading means 41 for reading the back surface (second surface) of the document in the duplex flow reading mode. Yes. A second contact glass 23b, which is a glass member, is provided to face the second image reading means 41.

  In addition, 61 is an open / close cover, and this open / close cover 61 is configured to be openable and closable in the direction of arrow G around a hinge 62. And when cleaning the 2nd contact glass 23b mentioned later, this opening-and-closing cover 61 is opened.

  Here, the second image reading unit 41 includes a second illuminating unit 41c that illuminates the back side of the document, an optical system 41f including a plurality of mirrors 41d and an imaging lens 41e, and a linear CCD 41g. Are fixedly arranged at predetermined positions.

  In the duplex scanning mode, the original whose surface image has been read by the first image reading means 21 is then conveyed to the second image reading means 41. When the document is conveyed, the second image reading unit 41 irradiates the back surface of the document D with light by the illumination unit 41c, and the light reflected from the document surface is imaged on the CCD 41g by the optical system 41f. Image information on the other side of the document is photoelectrically converted into an electrical signal.

  In the fixed reading mode, the ADF 40 lifts the front side so that the front side of the document table glass 22 is opened widely, and then the document is placed on the document table glass 22. A white background plate 42 is attached to the lower surface of the ADF 40 so that the document D is brought into close contact with the document table glass 22 in the fixed reading mode.

  Next, the reading operation in each reading mode in the image reading apparatus 202 configured as described above will be described.

  In the double-sided scanning mode, the first image reading unit 21 is stopped at a position below the first contact glass 23a. When the reading start operation is performed, first, the document D placed on the document placing table 12 is fed one by one from the top by the pickup roller 43 and conveyed.

  Next, after the document D is reversed by about 180 degrees by the U-turn path 40a, it is transported onto the first contact glass 23a by the first transport roller pair 46. At this time, the image information on the surface of the document is read by the first image reading means 21 stopped below the first contact glass 23a.

  Thereafter, the document on which the image information on the front side is read is conveyed by the second conveyance roller pair 48, and the image information on the back side of the document is read by the second image reading unit 41 on the second contact glass 23b. Thereafter, the document whose image has been read is transported by the third transport roller pair 51 and discharged onto the document discharge tray 50.

  In the case of the flow-reading mode, the first image reading means 21 is stopped at a position below the first contact glass 23a, as in the double-side flow-reading mode. Then, the image information on the surface of the document is read by the first image reading means 21 by the same operation as in the double-sided scanning mode. In the flow-reading mode, the original is conveyed by the third conveying roller pair 51 without being read by the second image reading means 41, and is discharged onto the original discharge tray 50.

  In the case of the fixed reading mode, first, the ADF 40 is opened, and the document D is placed on the document table glass 22 with the image information surface facing down. Next, after the first image reading means 21 is moved to the lower side of the original table glass 22 by the driving unit (see FIG. 3) by the reading start operation, the first image reading means 21 is moved while reading the image information. Read image information.

  By the way, when the original image is read while the original is in contact with the second contact glass 23b in the double-sided scanning mode, the original contact surface (sheet contact surface) of the second contact glass 23b may be soiled by the original.

  In this case, the second contact glass 23b is cleaned using a cleaning tool 100 as shown in FIG. Here, in FIG. 4, 101 is a frame which is a holding part of the cleaning tool 100, and 102 is a handle. When cleaning the second contact glass 23b, the user holds the handle 102 and holds the second contact glass. 23b is cleaned.

  Reference numeral 103 denotes a wiping member for wiping off dirt on the second contact glass 23b. As the wiping member 103, a cloth, a nonwoven fabric, or the like can be used. Reference numeral 104 denotes an elastic member provided between the wiping member 103 and the frame 101 so that the wiping member 103 is pressed against the second contact glass 23b with an appropriate pressing force.

  Reference numeral 107 denotes a guide rib, which is provided on the ADF 40 side (second contact glass side) as shown in FIG. 5 described later, and is a guide rail 60b that is a contact portion extending in parallel with the longitudinal direction of the second contact glass 23b. For this reason, it is possible to engage with a slight gap.

  Reference numeral 105 denotes a scraping member (hereinafter referred to as a scraper) for scraping off deposits on the second contact glass 23b. The scraping member 105 is provided on both sides of the elastic member 104 and the wiping member 103 with respect to the extending direction of the guide rib 107. Yes.

  That is, the wiping member 103 and the scraper 105 are juxtaposed on the frame 101 in the extending direction of the guide rib 107. As the material of the scraper 105, a material having a hardness that does not damage the surface of the second contact glass 23b, such as POM, polypropylene, or polyethylene, is selected. Moreover, the scraper 105 has a higher rigidity than that of the wiping member 103.

  Here, the thickness of the wiping member 103 and the elastic member 104 is configured such that the wiping member 103 protrudes from the scraper 105. As a result, when the wiping member 103 is brought into contact with the second contact glass 23b as will be described later, the wiping member 103 first comes into contact with the document contact surface side (sheet contact surface side) of the second contact glass 23b. .

  Thereafter, when the cleaning tool 100 is further pressed against the second contact glass 23b, the wiping member 103 is elastically deformed, whereby the scraper 105 comes into contact with the original contact surface of the second contact glass 23b. That is, in the present embodiment, the protruding amount of the wiping member 103 is within the elastic deformation range of the elastic member 104 or the wiping member 103.

  Further, when cleaning the second contact glass 23b, the frame 101 presses the wiping member 103 against the document contact surface side of the second contact glass 23b, and at the same time the scraper 105 contacts the document contact surface side. Bent to the side.

  Next, a method for cleaning the second contact glass 23b using the cleaning tool 100 of the image reading apparatus 202 will be described.

  When cleaning the second contact glass 23b, the opening / closing cover 61 shown in FIG. 2 is first opened as shown in FIG. 5 with the ADF 40 opened. Thereby, the second contact glass 23b is exposed, the guide rail 60b is exposed, and the engagement with the guide rib 107 of the cleaning tool 100 becomes possible.

  Next, the cleaning tool 100 is inserted in the direction indicated by the arrow K, and the guide rib 107 and the guide rail 60b are engaged as shown in FIG. The engagement direction K of the guide rib 107 with the guide rail 60 b is substantially parallel to the axial direction J of the handle 102 of the cleaning tool 100.

  Here, in the frame 101 of the cleaning tool 100, the wiping member 103 side is bent toward the guide rail 60 b side with respect to the axial direction J of the handle 102. For this reason, when the cleaning tool 100 is engaged with the guide rail 60b, the wiping member 103 attached to the frame 101 first comes into contact with the second contact glass 23b.

  Next, after the guide rib 107 is engaged with the guide rail 60b in this way, when the cleaning tool 100 is further pushed into the arrow K, the wiping member 103 contacts the original of the second contact glass 23b shown in FIG. 7B. Press contact with the surface 23b1. As a result, the elastic member 104 is elastically deformed from the state of FIG. 7A as shown in FIG. 7B. Accordingly, the wiping member 103 comes into pressure contact with the second contact glass 23b, and the scraper 105 comes into contact with the second contact glass 23b.

  Here, as shown in FIG. 6, since the guide rib 107 of the cleaning tool 100 is engaged with the guide rail 60b with a slight gap, the cleaning tool 100 can tilt within this gap. As a result, when the cleaning tool 100 is further pushed into the second contact glass side, the cleaning tool 100 is tilted, and the entire surface of the scraper 105 comes into contact with the second contact glass 23b. Can be obtained.

  After that, when the cleaning tool 100 is reciprocated along the guide rail 60b while being pressed against the second contact glass 23b in this way, the deposit adhered to the original contact surface of the second contact glass 23b is removed from the scraper. 105 can be scraped off. At the same time, the wiping member 103 that is in pressure contact with the second contact glass 23b can wipe off deposits such as ink and paper dust on the original contact surface of the second contact glass 23b that are weakly adhered.

  Note that the top portion of the scraper 105 serving as a contact portion with the original contact surface of the second contact glass 23b extends in a direction intersecting the reciprocating direction of the cleaning tool 100 along the guide rail 60b.

  As a result, it is possible to remove both dry and fixed stains such as correction liquid and glue adhering to the second contact glass 23b and weak stains such as ink and paper dust with a single cleaning operation.

  In this way, by configuring the scraper 105 to contact the second contact glass 23b and at the same time the wiping member 103 presses against the second contact glass 23b, dirt on the original contact surface of the second contact glass 23b can be ensured. Can be removed.

  In the above description, the case where the elastic member 104 is provided to press the wiping member 103 against the second contact glass 23b has been described. However, the present embodiment is not limited thereto. For example, if a material having elasticity such as felt or sponge is used as the material of the wiping member 103, the wiping member itself functions as the elastic member 104. That is, the wiping member 103 comes into pressure contact with the second contact glass 23b by its own elastic force.

  The cleaning tool 100 for the second contact glass 23b has been described so far as the cleaning tool for the image reading device 202. However, the cleaning tool having the same configuration is used for cleaning the document table glass 22 and the first contact glass 23a. Is possible.

  5 and 6, the guide rail 60b is not provided on the first contact glass 23a side. However, even in this case, if the wiping member 103 and the scraper 105 are brought into intimate contact with the first contact glass 23a and are reciprocated along the first contact glass 23a, the dry and adhered dirt and the dirt with weak adhesion are obtained. Both can be cleaned. Needless to say, the guide rail 60b may also be provided on the first contact glass 23a side.

  Further, when cleaning the document table glass 22, the wiping member 103 and the scraper 105 may be brought into close contact with the document table glass 22 and reciprocated. As a result, it is possible to clean both dry and fixed dirt such as correction liquid and glue adhering to the platen glass 22 and weak dirt such as ink and paper dust.

  Next, a second embodiment of the present invention will be described.

  FIG. 8 is a diagram illustrating the configuration of the cleaning tool of the image reading apparatus according to the present embodiment. In FIG. 8, the same reference numerals as those in FIG. 5 described above indicate the same or corresponding parts.

  In the present embodiment, as shown in FIG. 8, the scraper 105 is attached to the frame 101 so as to be rotatable about a rotation center 105a. In the present embodiment, the guide rail 60b is provided on the document contact surface side of the second contact glass 23b. And the bottom part of this guide rail 60b and the front-end | tip part of the guide rib 107 contact | abut, and it is comprised so that the approach to the guide rail 60b of the guide rib 107 beyond it may be controlled.

  The insertion direction K of the guide rib 107 into the guide rail 60b is substantially parallel to the axial direction J of the handle 102 of the cleaning tool 100 as shown in FIG. 5, and the wiping member 103 is attached to the second contact glass 23b. The direction is approaching.

  When cleaning the second contact glass 23 b, first, the guide rib 107 of the cleaning tool 100 is inserted into the guide rail 60 b, and then pressed against the second contact glass 23 b side by the handle 102.

  Here, when the cleaning tool 100 is pressed in this manner, the cleaning tool 100 rotates in the direction of arrow L in FIG. 8 with the contact point 109 between the guide rail 60b and the guide rib 107 as a fulcrum. As a result, the wiping member 103 is pressed against the document contact surface 23b1 of the second contact glass 23b, and good wiping performance can be obtained.

  In addition, when the cleaning tool 100 rotates in the arrow L direction in this way, the angle between the wiping member 103 and the second contact glass 23b slightly varies. However, since the wiping member 103 is elastically pressed against the second contact glass 23b by its own elasticity or the action of the elastic member 104, the wiping property is ensured.

  Further, the angle between the scraping member 105 and the second contact glass 23b slightly varies as the cleaning tool 100 rotates. However, since the scraper 105 rotates around the rotation center 105a so as to follow the second contact glass 23b, and the entire tip of the scraper 105 is in close contact with the second contact glass 23b, scratching performance is ensured. .

  As described above, in this embodiment, when the pressing force is further applied after the guide rail 60b and the guide rib 107 are in contact, the cleaning tool 100 is centered on the contact point 109 between the guide rail 107 and the guide rib 60b. Rotate.

  By rotating the cleaning tool 100 in this way, even when the second contact glass 23b is inclined, the wiping member 103 and the scraper 105 can be reliably brought into pressure contact with the second contact glass. As a result, the same cleaning performance as that of the first embodiment described above can be obtained.

  As described above, according to the present embodiment, when the pressing force is further applied to the cleaning tool 100 after the guide rib 107 comes into contact with the guide rail 60b, the cleaning tool 100 rotates around the contact point 109. To do. Accordingly, even when the second contact glass 23b is inclined, the wiping member 103 and the scraper 105 can be reliably pressed against the document contact surface 23b1 of the second contact glass 23b.

  In the above description, the scraper 105 is configured to be rotatable about the rotation center 105a. However, the present embodiment is not limited to this. For example, as shown in FIG. 9, an elastic member 108 may be provided between the scraper 105 and the frame 101, and the scraper 105 may be attached to the frame 101 via the elastic member 108.

  When configured in this way, the angle variation between the scraping member 105 and the second contact glass 23 b caused by the rotation of the cleaning tool 100 is absorbed by the elastic member 108. As a result, the scraper 105 moves in a direction following the original contact surface 23b1 of the second contact glass 23b while elastically deforming the elastic member 108. Thereby, since the whole front-end | tip part of the scraper 105 adheres to the 2nd contact glass 23b, scraping property is ensured.

1 is a diagram illustrating a schematic configuration of an image forming apparatus including an image reading apparatus according to a first embodiment of the present invention. FIG. 3 is a diagram illustrating the configuration of a first image reading unit and a second image reading unit provided in the image reading apparatus. The figure explaining the structure of the drive part which moves the said 1st image reading means. The figure explaining the structure of the cleaning tool which cleans the original contact surface of the 2nd contact glass which concerns on the 1st Embodiment of this invention. The 1st figure explaining the cleaning method of the 2nd contact glass using the above-mentioned cleaning tool. The 2nd figure explaining the cleaning method of the 2nd contact glass using the above-mentioned cleaning tool. The figure explaining the state of the wiping off member and scraper when the said cleaning tool is press-contacted to 2nd contact glass. The figure explaining the structure of the cleaning tool of the image reading apparatus which concerns on the 2nd Embodiment of this invention. The figure explaining the other structure of the said cleaning tool.

Explanation of symbols

21 First image reading means 22 Document table glass 23a First contact glass 23b Second contact glass 23b1 Document contact surface 40 Automatic document feeder 41 Second image reading means 60b Guide rail 61 Opening / closing cover 100 Cleaning tool 101 Frame 103 Wiping member 104 Elastic member 105 Scraper 105a Scraper rotation center 107 Guide rib 200 Copying machine 201 Copying machine main body 202 Image reading apparatus 202A Image reading apparatus main body D Original

Claims (8)

An image comprising image reading means for reading an image of a sheet and a glass member provided opposite to the image reading means, and an image for reading an image formed on the sheet by the image reading means while bringing the sheet into contact with the glass member In the cleaning tool of the reader,
A scraping member for scraping off dirt on the sheet contact surface of the glass member; a wiping member for wiping off dirt on the sheet contact surface; and a holding part for holding the wiping member and the scraping member. A cleaning tool for an image reading apparatus, wherein the wiping member is in pressure contact with the sheet contact surface at the same time as the member contacts the sheet contact surface. Forming the wiping member with an elastic member;
The scraping member and the wiping member formed by the elastic member are juxtaposed to the holding portion in a state where the wiping member protrudes from the scraping member within an elastic deformation range of the wiping member. The cleaning tool for an image reading apparatus according to claim 1. An elastic member provided between the holding portion and the wiping member;
2. The image according to claim 1, wherein the wiping member and the scraping member are juxtaposed on the holding portion in a state where the wiping member protrudes from the scraping member within an elastic deformation range of the elastic member. Cleaning device for reader.   4. The image reading apparatus according to claim 1, wherein when the sheet contact surface is cleaned, the wiping member and the scraping member are configured to follow the sheet contact surface. 5. Cleaning tools.   The said holding | maintenance part was provided rotatably so that the said wiping off member and the said scraping-off member might move to the direction which follows the said sheet contact surface when cleaning the said sheet contact surface. Cleaning device for image reading device.   The cleaning tool for an image reading apparatus according to claim 4, wherein when the sheet contact surface is cleaned, the holding portion is inclined so that the wiping member and the scraping member follow the sheet contact surface.   When the sheet contact surface is cleaned, the wiping member and the scraping member rotate in a direction following the sheet contact surface with a contact portion provided on the sheet contact surface side as a fulcrum. Item 7. A cleaning tool for an image reading apparatus according to Item 6. An elastic member provided between the holding portion and the scraping member;
The cleaning device for an image reading apparatus according to claim 7, wherein the scraping member moves in a direction following the sheet contact surface while elastically deforming the elastic member.

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