JP2000321683A - Image reader and image forming device equipped therewith - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an original from falling from an original platen even when the original projects from the original platen by providing an original supporting body supporting the original which projects from the original platen so that it may project to the side surface of a main body. SOLUTION: This image reader 30 is constituted so that an original platen cover 3 which can be opened/closed is attached to a housing 16 hermetically sealed in a state where nearly all the area of an upper surface is the transparent original platen 1. A supporting member 17 is attachably/detachably attached to the periphery of the original platen 1 being the upper surface of the housing 16. When the original has such size that it does not project from the housing 16, the member 17 is attached to the housing 16 in a state where it does not project from the side surface of the housing 16 by fitting two pins 17a protrusively provided on the member 17 in the hole 16a and the slot 16b of the housing 16. On the other hand, when the original has such size that it projects from the housing 16, the member 17 is attached to the housing 16 in a state where it projects nearly perpendicularly from the side surface of the housing 16 by fitting the pins 17a of the member 17 in the hole 16c and the slot 16d of the housing 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image reading device for reading an original placed on a transparent platen by image reading means,
The present invention relates to an image forming apparatus such as a copying machine, a printer, a facsimile, and a multifunction machine including the image reading apparatus in a main body.

[0002]

2. Description of the Related Art FIG. 9 shows a conventional copier or MFP having a flatbed scanner, a printing unit, and the like.
((Multi function printer) Multi Fu
FIG. 1 is an external view of an image reading apparatus used for an Nction Printer. When the user places a document on a transparent platen 1 provided in a housing 2, closes a platen cover 3, and presses a start button (not shown), the image reading device reads the document provided in the housing. The reading means reads an original. The read document information is sent to the image forming means of the printer and printed out on a sheet.

[0003]

However, in the above-mentioned prior art, since the transparent document table 1 (document reading area) occupies almost the entire area of the upper surface of the housing 2, as shown in FIG. Is approximately the same as the size of the platen, half of the book 15 protrudes from the housing 2, and if the protruding portion 15b has a large number of pages, the weight of the protruding book is added to the book as shown by an arrow. The book 15 sometimes dropped from the platen 1 depending on the weight.

In particular, when an image reading device is connected to a computer or the like to read an image, it is necessary to operate the computer, and it has been difficult to operate the computer because it is impossible to suppress a book from falling by hand. .

Further, in an image forming apparatus having such a document reading device in a main body, image information is rarely sent reliably, and an image cannot be accurately formed on a sheet.

[0006] The present invention relates to an image reading apparatus for preventing a document from dropping from the document table even if the document protrudes from the document table, and an image forming apparatus provided with the image reading apparatus.

[0007]

According to the present invention, there is provided an image reading apparatus comprising: a main body having a document table on which a document is placed; and an image read from the document stored in the main body and placed on the document table. A document reading means; and a document support for projecting and supporting the document protruding from the document table on a side surface of the main body.

When reading a document larger than the document table with the above image reading apparatus, the document support is projected from the side of the main body to increase the area of the document table, and the portion of the document support protruding from the document table is removed. Let them support you. This can prevent the document from dropping.

In the image reading apparatus according to the present invention, the document supporting member does not protrude from the side of the main body when not in use.
And it is provided in the main body so as to be changeable in direction so as to protrude from the side surface of the main body when used.

In the above image reading apparatus, when used, the document support is projected from the side of the main body,
It is provided on the main body to support the original, prevent the original from dropping, and not to protrude from the side of the main body when not in use.
It is out of the way.

The document support of the image reading apparatus of the present invention is detachably provided on the main body.

In the above-described image reading apparatus, the document support is attached to the main body so as not to protrude from the side surface of the main body when not used, so that the original support does not interfere.
When used, the document is temporarily removed, changed in direction so as to protrude from the side surface of the main body, and mounted on the main body to support a document.

The document support of the image reading apparatus of the present invention is rotatably provided on the main body.

In the above-described image reading apparatus, the document support is housed in the main body so as not to protrude from the side of the main body when not in use, so as not to be in the way. The document is rotated and pulled out so as to project, and supports the document.

The document support of the image reading apparatus of the present invention is adapted to be mounted on the main body at the time of use.

In the above-described image reading apparatus, the document support is detached from the side of the main body when not in use, so as not to be in the way.
The original is mounted on the main body to support the original.

The main body of the image reading apparatus of the present invention has a cover for covering the original table and opening and closing the original table, and the original support is provided on the open / close end side of the cover.

In the above-described image reading apparatus, when the original is protruded from the platen, it is protruded from the open / close end of the cover. Therefore, when the document support is provided on the open / close end side of the cover, the document support reliably supports the document.

The image forming apparatus according to the present invention may be configured as any one of the above.
Image reading devices, and image forming means for forming an image read by the image reading devices on a sheet.

[0020]

FIG. 1 is a block diagram showing an embodiment of the present invention.
7 through FIG.

(Copying Machine) First, a copying machine 10 which is an image forming apparatus having an image reading apparatus according to an embodiment of the invention in a main body.
0 will be described with reference to FIG.

The copying machine 100 includes cassettes 115 and 116 for stacking a plurality of sheets on a main body 101.
Sheets S of different sizes stacked and stored in these cassettes 115 and 116 are selectively fed to image forming means.

The sheets stacked and stored in the cassettes 115 and 116 are fed by a feed roller 1 rotating in the direction of the arrow.
The sheets are sequentially fed out from the uppermost sheet by 17, 118. The sheet S fed by the feed rollers 117 and 118 is separated by the separation roller pair 12 rotating in the direction of the arrow.
The sheets are separated one by one by 0 and 121 and fed to the second registration roller 122 and the registration roller pair 123 that are not rotating.

When the leading end of the sheet S fed by the separation roller pairs 120 and 121 strikes the nip of the registration roller pair 122, a predetermined loop is formed to correct the skew state.

The sheet S whose skew has been corrected is adjusted by the timing of aligning the position of the sheet S with the toner image on the photosensitive drum 104 rotating in the direction of the arrow, and the registration roller pair 123 which starts rotating in the direction of the arrow. 104 and the transfer charger 112, where the transfer charger 1
12, the toner image on the photosensitive drum 104 is transferred onto the sheet surface. Photosensitive drum 104, transfer charger 11
2. The developing unit 114 and the like constitute an image forming unit 102 for forming an image on a sheet.

In this copying machine, an image of a document read by an image reading device 30 described later is subjected to desired image processing, and is then laser-scanned by a laser scanner 31 onto a photosensitive drum 104 rotated in the direction of the arrow. Light is irradiated. As a result, the electrostatic latent image formed on the photosensitive drum 104 is visualized by the black toner supplied from the developing device 114, and becomes a toner image.

The sheet S on which the transfer of the toner image has been completed in the transfer section is sent to the fixing device 124 by the transport belt 113, and the toner image is fixed on the sheet surface by the identification fixing device 124.

The sheet S after the fixing process of the toner image is
In the case of single-sided copying and in the front-side discharge sheet mode, the sheet is fed to the outer sheet discharge roller pair 127 by the inner sheet discharge roller 125, and is discharged from the outside sheet tray 140 by the same sheet discharge outer roller pair 127 with the image surface facing upward. Discharged up.

(Image Reading Apparatus of First Embodiment) The image reading apparatus of the first embodiment will be described with reference to FIGS.

FIG. 1 is an external view of an image reading apparatus 30 of the present invention.

The image reading apparatus 30 has a configuration in which a document table 1 having a transparent document table 1 is formed on almost the entire upper surface, and an openable document table cover 3 is attached to a closed housing 2.

A support member 17 is detachably mounted around the document table 1 on the upper surface of the housing 16. In this FIG.
The manner in which the support member 17 is detached from the housing 16, the direction in which the support member 17 is changed, and the support member 17 is mounted again on the housing 16 is indicated by an arrow, and the state in which it is mounted again is indicated by a two-dot broken line.

The attachment of the support member 17 to the housing 16 will be described. In the case where the size of the original does not protrude from the housing 16, the two pins 17 a and 1 projecting from the support member 17 are provided.
When the member 7a is fitted into the hole 16a and the elongated hole 16b of the housing 16, the support member 17 is attached to the housing 16 so as not to protrude from the side surface of the housing 16.

On the other hand, when the original is larger than the housing 16, the pins 17 a and 17 a of the support member are connected to the holes 1 in the housing.
6c and the long hole 16d, the support member 17
As shown by a two-dot broken line in FIG. FIG.
FIG. 2 shows this state, in which the book 15 is placed on the housing 16.

FIGS. 3 and 4 show how the book 15 is read inside the housing 16.
First light source 4 (cold cathode tube or the like) and mirror 5 are fixed.
The scanning unit 6 and the mirrors 7 and 8 have respective reflection surfaces 7a.
A second scanning unit 9, a motor 10, a lens 11, a CCD 12, and an electric control board 13 for controlling the electric components (the light source 4, the motor 10, the CCD 12), which are arranged and fixed so that the right and the left 8a are at right angles. I have.

The first scanning unit 6 is parallel to the document table 1,
In addition, while moving over the entire area of the document table 1 in a direction perpendicular to the longitudinal direction (main scanning direction) of the mirror 5 (arrow direction in FIG. 4: sub-scanning direction), pages 15a of a book placed on the document table 1 ( 2 is irradiated with light from the light source 4. The reflected light is
Reflected by mirrors 5, 7, 8 and CC by lens 11
An image is formed on D12. The CCD 12 reads an image for each line (main scanning direction).

At this time, the second scanning unit 9 to which the mirrors 7 and 8 are fixed is moved in the same direction by a movement amount of a half of the first scanning unit 6, so that the original (read page 15a of the book) and C
A movement is made to keep the optical path length with the CD 12 constant. This moving state is shown in FIG. Assuming that the first scanning unit 6 is moved by a distance L from the state shown in FIG.
2 in the same direction, the distance between the mirror 5 and the mirror 7 increases by L / 2, and the distance between the mirror 7 and the CCD 12 decreases by L / 2.

In this manner, the original placed on the original table 1 is moved in the sub-scanning direction by moving the first and second scanning units so that the CCD 1
Read in 2.

When the image reading device 30 is provided with a printer unit, the image reading device 30 becomes a copying machine. Further, when the image reading device 30 is provided with a facsimile function, the MFP (multi-facsimile printer (Mul
tiFunction Printer)).

According to the present embodiment, as shown in FIG.
Since the protruding portion 15b of the book 15 is supported by the support member 17, the user does not need to support the book so that the book does not fall off the image reading device 30. Office equipment can be operated.

(Image Reading Apparatus of Second Embodiment) FIG. 5 shows an image reading apparatus 230 of a second embodiment.

Almost all the castle on the upper surface of the housing 20 is a transparent document table 1, and a recess 20 a is formed in a part of the periphery of the upper surface of the housing 20. A support member 21 is attached to the recess 20a so as to be rotatable about a rotation center shaft 21a. When the support member 21 is not used, the support member 21 can be stored in the concave portion 20a as shown by a two-dot broken line,
When used, it can be pulled out to the position shown by the solid line.

When the document protrudes from the document table, the supporting member 21 is rotated to protrude from the document table, so that the protruding document can be supported by the support member 21 and the document can be prevented from dropping. Further, the support member 21 is
The support member is not lost because it is more difficult to remove.

(Image Reading Apparatus According to Third Embodiment) FIG. 6 shows an image reading apparatus 330 according to a third embodiment.

When there is a danger that the original protrudes from the original table 1 and the original falls, the original can be fitted by fitting the fitting portion 19a of the support member 19 into the hole 18a provided on the side surface of the housing 18. It can be supported by the support member 19 and the fall can be suppressed.

As described above, the mounting portion is located on the original table surface side (upper surface).
However, the same effects as those of the image reading apparatuses according to the first and second embodiments can be obtained even if the image reading apparatuses are provided on the side surface instead of the image reading apparatuses.

As described above, the support members 17, 230 of the image reading apparatuses 30, 230, 330 of the first, second, and third embodiments
The upper surfaces of 19 and 21 are substantially flush with the upper surface of the document table 1.

The support members 17, 19, 21 are located on the open / close end side of the document table cover 3.

[0049]

According to the image reading apparatus of the present invention, when reading a document larger than the document table, the document support is projected from the side surface of the main body, and the portion of the document supporting section which protrudes from the document table is supported. Therefore, the area of the document table is increased, the document is prevented from dropping, and the document can be reliably read.

Further, when the image reading device is reading a document, it is not necessary for the user to press the document, and the operability of the image reading device can be improved.

In the image reading apparatus of the present invention, the document support is provided on the main body such that the document support does not protrude from the side surface of the main body when not in use and protrudes from the side surface of the main body when in use. And the document support can support the document and prevent the document from dropping, and prevent the document support from protruding from the side of the main body when not in use, so that it does not get in the way. Can be.

In the image reading apparatus of the present invention, when the document support is detachably provided on the main body, the document support is prevented from protruding from the side of the main body when not in use so as not to be obstructed. When the document support is used, the document can be once removed, changed in direction, and projected from the side surface of the main body, thereby supporting the document and preventing the document from falling.

In the image reading apparatus of the present invention, when the document support is rotatably provided on the main body, the document support does not protrude from the side of the main body when not in use, so that it does not become an obstacle. When the document support is used, the document support can be rotated and protruded from the side surface of the main body to support the document and prevent the document from dropping.

If the document support is rotatably provided on the main body, the document support can be prevented from being lost.

When the document support of the image reading apparatus of the present invention is mounted on the main body at the time of use, when the document support is not used, it is detached from the side of the main body so as not to be in the way. can do.

When the document support of the image reading apparatus of the present invention is provided on the open / close end of the cover, when the document is protruded from the platen, it is protruded from the open / close end of the cover and is placed on the platen. The document to be placed can be reliably supported by the document support, and the document can be prevented from dropping. In addition, this allows the image reading device to reliably read the document. Further, when the image reading device is reading the document, the user does not need to press the document, and the operability of the image reading device can be improved.

The image forming apparatus of the present invention includes any one of the above image reading devices capable of reliably reading an image, so that an image can be reliably formed on a sheet.

[Brief description of the drawings]

FIG. 1 is a perspective view of an image reading apparatus according to a first embodiment of the present invention.

FIG. 2 is a right side sectional view of the image reading apparatus of FIG. 1;

FIG. 3 is a front sectional view of the image reading apparatus of FIG. 1;

FIG. 4 is a front sectional view for explaining an operation of the image reading apparatus of FIG. 1;

FIG. 5 is a perspective view of an image reading apparatus according to a second embodiment.

FIG. 6 is a perspective view of an image reading apparatus according to a third embodiment.

FIG. 7 is a front sectional view of the image forming apparatus.

FIG. 8 is a side sectional view showing a usage form of a conventional image reading apparatus.

FIG. 9 is a perspective view of the image reading apparatus of FIG. 8;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 platen plate 3 platen cover 6 first scanning unit (image reading unit) 9 second scanning unit (image reading unit) 11 CCD (image reading unit) 15 books 15 a book page 15 b protruding portion 16, 18, 20 housing Body (main body) 16a hole 16b long hole 16c hole 16d long hole 17, 19, 21 support member 17a pin 18a hole 19a fitting portion 20a concave portion 21a rotation center axis 30, 230, 330 image reading device 100 copying machine (image forming) Apparatus) 101 Main body 102 Image forming means 104 Photosensitive drum

Continued on the front page F term (reference) 2H012 CA10 CA15 2H076 BA45 BA91 BB25 5C062 AA02 AA05 AB02 AB17 AB22 AB30 AD02 AD03 AD04 AD05 AD06 BA00 5C072 AA05 BA01 BA02 BA20 LA04 XA01

Claims (7)

[Claims] A main body having a platen on which a document is placed; image reading means stored in the body and reading an image of the document placed on the platen; and the document protruding from the platen And a document supporting member that protrudes and supports the side of the main body. 2. The apparatus according to claim 1, wherein the document support is provided on the main body such that the document support does not protrude from a side surface of the main body when not in use, and protrudes from a side surface of the main body when in use. The image reading device according to claim 1, wherein: 3. The image reading apparatus according to claim 1, wherein the document support is detachably provided on the main body. 4. The image reading apparatus according to claim 1, wherein the document support is rotatably provided on the main body. 5. The image reading apparatus according to claim 1, wherein the document support is mounted on the main body at the time of use. 6. The document processing apparatus according to claim 1, wherein the main body has a cover that covers the document table and opens and closes the document table, and the document support is provided at an open / close end of the cover. The image reading device according to any one of items 1 to 5. 7. An image reading apparatus according to claim 1, further comprising: an image forming unit configured to form an image read by the image reading apparatus on a sheet. Image forming apparatus.