JP2002287272A - Document reader - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a document reader which makes it easy to attach and detach a connector of a cable when the cable is wired from a substrate arranged in a housing to an external device and another substrate. SOLUTION: The document reader is equipped with a scanning unit for reading and scanning a document in the housing 35 and can be connected to the external device, and a connector substrate 17 for connecting to the external device is arranged outside an area obtained by projecting the arrangement area of a moving means for the scanning unit on the bottom surface of the housing 35 and on the housing bottom surface outside the movement space of the scanning unit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a document reading apparatus provided with a moving scanning body for scanning while moving inside the apparatus.

[0002]

2. Description of the Related Art A document reading apparatus for reading a document includes a first carriage and a second carriage which are movable scanning members for reading and scanning the document, as disclosed in, for example, Japanese Patent Laid-Open No. 6-308627. It is provided with. In this document reading apparatus, the document is located on the inner bottom of the document reading apparatus and outside the moving area of the moving scanning body in a direction perpendicular to the moving direction of the moving scanning body (see FIGS. 1 and 2 of JP-A-6-308627). ) Or below the moving area of the moving scanning body (see FIG. 3 of JP-A-6-308627).

Further, Japanese Patent Application Laid-Open No. 8-297388 discloses an image forming apparatus constructed by connecting a modularized printer unit and scanner unit with a cable. In this image forming apparatus, the connection of the cable to the board is facilitated by arranging the board for connecting the cable close to the back side of the scanner unit housing.

[0004]

Problems to be Solved by the Invention
As described in Japanese Patent Application Publication No. 8 (1999), when a modularized printer unit and scanner unit are connected by a cable, the ease of cable connection and the cable to a board far away from the connection in the scanner unit are required. In consideration of the fact that it is unnecessary to newly provide the scanner unit, the board on the scanner unit side is arranged close to the rear side of the housing of the scanner unit where the connection unit is located.

However, when a substrate of an original reading apparatus configured to be connected to another apparatus is arranged at the bottom of the original reading apparatus as in the prior art of Japanese Patent Laid-Open No. 6-308627, the original reading The substrate must be arranged so as not to buffer the moving area of the moving scanning body inside the apparatus, which is a bad effect on downsizing of the apparatus, and furthermore, there is a possibility that the moving scanning body may be damaged when the substrate is detached. There is.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a document reading apparatus in which a cable connector can be easily attached and detached when a cable is wired from a substrate disposed inside a housing to an external device or another substrate. .

[0007]

According to the present invention, there is provided an original reading apparatus having a movable scanning body for reading and scanning an original in a housing, and a connecting board for connecting to the external apparatus. An original reading device, wherein the arrangement area of the moving means of the moving scanning body is arranged outside the area projected on the bottom surface of the housing and on the bottom surface of the housing outside the moving space of the moving scanning body. .

According to the present invention, the connection substrate for connecting to another external device is arranged outside the moving space of the moving scanning body and at a position not buffered by the moving means.
Not only is it easy to attach and detach with other external devices, but also when replacing the connection board and peripheral members of the board due to aging, it is possible to work without removing the moving scanning body,
Convenience can be improved.

The present invention is also characterized in that the external device connection connector provided on the connection board is provided so as to be exposed to the outside from the side wall of the housing.

According to the present invention, since the external device connection connector is exposed to the outside, it is easy to attach / detach to / from another external device.

Further, the present invention is characterized in that the connection board includes a connector for connecting to another board disposed in the housing. According to the present invention, connection between the connection substrate and another substrate in the housing is also facilitated.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described based on embodiments with reference to the drawings, but the present invention is not limited thereto.

FIG. 1 and FIG. 2 show an image forming system 1 having a document reading apparatus according to an embodiment of the present invention.
This will be described below with reference to FIG. First, an outline of the image forming system 1 will be described with reference to FIGS. FIG. 1 is a cross-sectional view illustrating a configuration example of the image forming system 1, and FIG. 2 is a cross-sectional view illustrating a configuration around a photoconductor.

As shown in FIG. 1, an image forming system 1
Is connected to a scanner 2 serving as a document reading device, an automatic document feeder 4, a sheet post-processing device 5, a multi-stage paper feed unit 6 and a relay feed unit 8 with a printer 2 as a core,
Functionality has been extended. The scanner device 3 is disposed above the printer 2 and the sheet post-processing device 5 by being supported on a system rack 7 together with the automatic document feeder 4 disposed above the scanner device 3. Hereinafter, each device will be briefly described.

(Printer 2) The printer 2 not only records and outputs the image read by the scanner device 3, but also
When an image processing device such as a personal computer is connected, image data from the externally connected device is also recorded and output.

In the printer 2, an electrophotographic processing unit 20 having a drum-shaped photosensitive member 200 as a center is disposed substantially at the center right side of the apparatus main body. As shown in FIG. 2, around the photoconductor 200, a charging roller 201 for uniformly charging the surface of the photoconductor 200, and a uniformly charged photoconductor 20
An optical scanning unit 22 for writing an electrostatic latent image by scanning an optical image on the surface 0; and a developing unit 20 for developing the electrostatic latent image written by the optical scanning unit 22 with a developer.
2, a transfer unit 203 for transferring an image recorded and reproduced on the photoconductor 200 onto paper, and a developer remaining on the photoconductor 200 is removed to record a new image on the photoconductor 200. Cleaning unit 20 that enables
4, and a discharge lamp unit (not shown) for removing charges from the surface of the photoconductor 200, and the like are sequentially arranged.

The optical scanning unit 22 receives a semiconductor laser light source (not shown), a rotary polygon mirror 220 for reflecting laser light from the semiconductor laser light source, and a laser beam reflected by the rotary polygon mirror 220 at a constant speed on the photosensitive member 200. Fθ lens 223 acting to scan, and folding mirror 22
4,225 etc. are built in. Semiconductor laser light source
A laser beam is emitted in accordance with image data read by a scanner device 3 described later and stored in an image memory or image data transferred from an external device such as a personal computer or a facsimile terminal, and the image data To form an electrostatic latent image corresponding to.

Below the main body of the printer 2, there is disposed a paper supply unit 21 provided inside the main body of the printer 2. The paper supply unit 21 includes a paper storage tray 210 that stores paper.
And a separating / supplying unit 211 for separating the sheets stored in the sheet storage tray 210 one by one. The paper separated and supplied one by one from the paper supply unit 21 is supplied to the photosensitive member 200 of the electrophotographic process unit 20 and the transfer unit 2
03, and the image recorded and reproduced on the photoconductor 200 is transferred. The paper supply to the paper supply unit 21 is performed by pulling out the paper storage tray 210 to the front side of the printer 2 main body.

The lower surface of the main body of the printer 2 receives paper sent from a multi-stage paper feed unit 6 or the like prepared as a peripheral device, and receives the photoconductor 2 of the electrophotographic process unit 20.
A paper receiving port 27 for sequentially supplying the paper between the first transfer unit 00 and the transfer unit 203 is provided.

A fixing device 23 is disposed above the electrophotographic process unit 20. The fixing device 23 sequentially receives the paper on which the image has been transferred, heats and fixes the developer transferred on the paper to the outside of the fixing device 23. And send out the paper. The paper on which the image has been recorded is transferred from the discharge roller 28 of the printer 2 to the relay conveyance unit 8 on the upper surface of the printer 2.

In the upper and lower spaces of the optical scanning unit 22, a process control unit (PCU) board for controlling an electrophotographic process, a printer control unit 24 for accommodating an interface board for receiving image data from outside the apparatus, and an interface board. An image control unit 25 having an image control unit (ICU) board for performing predetermined image processing on the received image data and causing the optical scanning unit 22 to scan and record the image; and various boards and units And a power supply unit 26 for supplying power to the power supply.

(Multi-stage paper feed unit 6) The multi-stage paper feed unit 6 is an external paper supply device. The multi-stage paper supply unit 6 separates sheets stored in a paper storage tray 610 one by one by a separation feeding unit 611. The paper is supplied toward a paper discharge port 62 provided on the upper surface of the unit and communicating with the paper receiving port 27 of the printer 2. In the present embodiment, three levels of the paper supply units 61 are stacked. During operation, the paper supply unit 61 containing desired paper is selectively operated. The paper supply to the paper supply unit 61 is performed by pulling out the paper storage tray 610 to the front side of the unit main body.

Further, the multi-stage paper feed unit 6 is configured so that the printer 2 and the sheet post-processing device 5 are placed on the upper part, but is moved in this state to be fixed between the system racks 7. A moving roller 63 and a fixed portion 64 are provided at the lower part as possible. At the time of movement, the fixed part 64 is separated from the floor by rotating and rising the fixed part 64,
At the time of fixing, the fixing unit 64 is rotated and lowered to bring the fixing unit 64 into contact with the floor surface, thereby fixing the multi-stage sheet feeding unit 6.

Although this embodiment has been described as an apparatus in which three paper supply units 61 are stacked, it is a multi-stage paper supply unit composed of at least one or more paper supply units 61. You may.

(Sheet Post-Processing Apparatus 5) The sheet post-processing apparatus 5 guides a sheet on which an image discharged from the relay conveyance unit 8 is recorded from above the apparatus by a carry-in roller.
Post-processing is performed on the paper.

The post-processing includes a stapling process, a sorting process, and the like. The apparatus illustrated here has a configuration including three paper discharge trays 51.
Ejection tray 5 for ejecting paper by gates 52 and 53
1, and discharges sheets. For example, the upper discharge tray 51a is used for discharging sheets in the copy mode, the middle discharge tray 51b is used for discharging sheets in the print mode, and the lower discharge tray 51b is used. 51c is used for discharging paper in the facsimile printing mode, for example, so that the paper can be discharged according to the purpose.

(Scanner Apparatus 3) The scanner apparatus 3 automatically supplies a document on a sheet by an automatic document feeder 4, sequentially exposes and scans one sheet at a time to read a document image, and a book reader. And a manual reading mode in which an original document or a sheet original that cannot be automatically supplied by the automatic document feeder 4 is set by a manual operation to read the original image. The image of the document set on the transparent document table 30 is exposed and scanned by a first scanning unit 31 and a second scanning unit 32 that move along the document table 30 at a predetermined speed relationship with each other. The original image is converted into an electrical signal and output after being guided by an optical component such as a mirror or an image forming lens 33 to form an image on the photoelectric conversion element 34. Details of the scanner device 3 will be described later.

(Automatic Document Conveyor 4) The automatic document conveyer 4 conveys the document placed on the document set tray 40 toward the document table 30, and scans the document on the document discharge tray 42. And a document conveying means 41 for discharging the original. In addition, the sheet document that cannot be automatically supplied is rotated upward with the back side of the apparatus as a fulcrum so that the front side of the apparatus can be opened so that the sheet document can be placed on the document table 30 and scanned. It is configured.

(Relay Transport Unit 8) The relay transport unit 8 is mounted on a paper discharge tray 29 provided on the top of the printer 2, and transfers paper on which an image discharged from the printer 2 is recorded. This is a transport unit for introducing the sheet toward the sheet post-processing apparatus 5 located on the downstream side.

Further, in the middle of the sheet conveyance path 84 of the relay conveyance unit 8, the sheet is discharged from the discharge tray 9 formed by the upper surface 82 of the unit and the upper surface 54 of the sheet post-processing device 5.
Another paper transport unit 83 that guides the paper to the second branch. 2
The two discharge destinations are the gate 81 located at the branch of the transport path.
, Can be changed.

Hereinafter, the configuration of the scanner device 3 will be described in detail with reference to FIGS. FIG. 3 shows the scanner device 3.
3 is a perspective view showing a main part of FIG. FIG. 4 shows the scanner device 3.
FIG. 4 is a plan view of a first scanning unit 31 incorporated in the first scanning unit. FIG. 5 is a sectional view showing a main part of the first scanning unit 31. FIG. 6 is a perspective view of a xenon lamp 310 which is a light source integrally provided in the first scanning unit 31. FIG. 7 is a perspective view of a holder for holding the xenon lamp 310 in the first scanning unit 31. FIG.
(A) shows the wire fixing means 31 of the first scanning unit 31.
FIG. 8B is a sectional view of the first scanning unit 3.
FIG. 3 is a plan view showing details of one wire fixing means 316;
FIG. 8C is a sectional view of the wire fixing means 316 of the first scanning unit 31. FIG. 9 is a schematic configuration diagram of a drive circuit board 315 for driving the xenon lamp 310, and FIG.

As shown in FIG. 3, the first scanning unit 31
The second scanning unit 32 is provided with a slider 317 (not shown in FIG. 3; see FIG. 4) provided at the bottom of the end of each carriage. It rests on the first guide means 36 and the second guide means 37 provided on the inner wall (dotted line).
A scanner motor 38 as a drive source for moving the first scanning unit 31 and the second scanning unit 32 is attached to the back side of the scanner device housing 35. An output gear is provided on an output shaft of the scanner motor 38. The output gear is engaged with a gear portion of a gear / pulley (a gear and a pulley are integrally formed) rotatably disposed on a rotation shaft fixed to the inner wall of the scanner device housing 35.

A drive shaft 43 is rotatably supported by the scanner housing 35 via a bearing (not shown) between the front and rear walls of the scanner housing 35. This drive shaft 43
Has a pulley 44 and two front and rear wire drive pulleys 3
9 are fixed. Pulley and gear of drive shaft 43
A timing belt is wound between the pulley and the pulley portion.

The wire 45 wound around the wire drive pulley 39 of the drive shaft 43 has one end fixed to a first fixing portion 46 arranged at the bottom of the scanner device housing 35 and the other end connected to the scanner device housing. It is fixed to a second fixing portion 47 provided on an inner wall on the outward movement side of the body 35 via a tension spring 48 for applying tension. The wire 45 is connected to the inside of a double pulley 49 rotatably provided in the second scanning unit 32 from the first fixed portion 46 side,
3, a pulley 39 rotatably provided on the inner wall of the scanner housing 35, and a double pulley 4 rotatably provided on the second scanning unit 32.
9 and around the auxiliary pulley 56. The wire 45 is wound around the wire drive pulley 39 many times. Of the portion of the wire 45 wound many times, the first scanning unit 31 and the second
Even when the scanning unit 32 moves in the forward and backward movement directions in the drawing, the portion that is still wound around the wire drive pulley 39 is fixed to the wire drive pulley 39 with a fixing screw, and the wire 45 is driven by the wire drive. It is configured such that the driving force can be accurately transmitted without slipping on the pulley 39.

The first scanning unit 31 is fixed to a portion between the wire driving pulley 39 and the double pulley 49 of the wire 45 wound in this manner by a wire fixing means 316 described later. . In the first fixing portion 46, a wire 45
The fixing metal provided at the end of the wire 45 is configured to fix the end of the wire 45 by using a screw to fix the end of the wire 45. In the second fixing portion 47, a spring 48 engaged with a fixing metal provided at an end of the wire 45 is configured to be locked to a cut-and-bent portion of the scanner device housing 35. The auxiliary pulley 56 connects the end of the wire 45 to the spring 48.
The wire 45 is bent from the bottom surface of the scanner device housing 35 to the upper surface side when locking via the device, thereby preventing the scanner device housing 35 from increasing in size in the backward movement direction.

With the above configuration, when the scanner motor 38 rotates forward or backward, the first scanning unit 31 and the second scanning unit 32 operate the first guide unit 3.
6 and is guided by the second guide means 37 to move in the forward or backward direction in FIG. During this movement, the first
The moving speed of the scanning unit 31 is the second scanning unit 32
Is twice as fast as the moving speed.

Next, the first scanning unit 31 will be described in detail with reference to FIGS. As shown in FIGS. 4 and 5, the first scanning unit carriage 311 has a xenon lamp (low heat lamp, irradiation light source) 310 as a light source for irradiating the original, and a light reflected from the original within a predetermined range. Slit 3 for limiting to other optical components
12, a reflector 313 for reflecting light from the light source toward the original, a first reflection mirror 314, a drive circuit board 315 for the light source, and a drive circuit board fixing screw 315 for fixing the drive circuit board 315 to the first scanning unit carriage 311.
a, wire fixing means 316 for fixing the first scanning unit 31 to the wire 45, and the above-described first guide means 36
Above, the slider 317 and the like for the first scanning unit 31 to slide are provided integrally. The operation of each of these means will be described below.

As shown in FIG. 6, the xenon lamp 310 provided integrally with the first scanning unit 31 has a portion where the fluorescent material is applied to the inner wall surface of the lamp tube and a portion where the fluorescent material is not applied. The aperture 310a is formed by a portion where the phosphor is not applied. Since the amount of light generated by the xenon lamp 310 is smaller than that of a halogen lamp or the like, the aperture 310a narrows the light emission range so that the light can be used effectively. At one end in the longitudinal direction of the xenon lamp 310, a high-voltage cable 310b for transmitting electric power from the drive circuit board 315 is provided.

As shown in FIG. 4, the xenon lamp 3
Reference numeral 10 denotes a first scanning unit carriage 311 whose both ends are held. The end of the xenon lamp 310 shown in FIG. 6 on the side where the high-voltage cable 310b is not provided is fitted into a recess 318a of a lamp holder 318 standing upright from the first scanning unit carriage 311 shown in FIG. The end on the side where 310b is provided also fits into the recess 318a of the lamp holder 318. In the lamp holder 318, a slide projection 318b provided at a lower portion is fitted into a slide guide of the first scanning unit carriage 311 so as to be movable in the longitudinal direction of the lamp, and appropriately holds the xenon lamp 310. The screw hole 31
A screw passing through 8c is screwed into a screw hole of the carriage 311 and can be fixed to the carriage 311.

As shown in FIG. 5, the light from the xenon lamp 310 illuminates the original G placed on the original
Is irradiated. Here, a part of the light from the xenon lamp 310 (indicated by coarse hatching in FIG. 5) is directly incident on the document table 30 to irradiate the document G. Another part of the light from the xenon lamp 310 (indicated by dense hatching in FIG. 5) is
The document G is once reflected by the reflector 313 provided on the document 1, and then enters the document table 30 to irradiate the document G.

That is, the reflector 313 transmits a part of the light from the xenon lamp 310 to the slit 31 of the original G.
2 so as to be reflected toward a portion facing the same. The reflector 313 is disposed on the forward movement side of the first scanning unit carriage 311 with respect to the xenon lamp 310 with the slit 312 interposed therebetween. The reflector reflection surface 313a is arranged so as to be inclined such that the normal line thereof faces the document table 30 with respect to the normal line of the surface perpendicular to the traveling direction.

The light reflected from the original G is reflected by the xenon lamp 3
10 and the reflector 313, the slit 3 formed on the bottom surface of the first scanning unit carriage 311.
After passing through the first reflection mirror 3, an image is formed on the light receiving surface of the CCD 34 via the second reflection mirror 321, the third reflection mirror 322, and the imaging lens 33.
The light 14 is reflected toward the second reflection mirror 321. The first reflection mirror 314 is held by mirror holding portions 319 projecting downward at both ends of the back surface of the first scanning unit carriage 311, and there is no holding portion in the center area of the first scanning unit carriage 311.

Here, as described above, the light emitted from the aperture 310a of the xenon lamp 310 includes an area on the document G corresponding to the slit width 312s (hereinafter, referred to as an area).
The “reading area B”) is directly irradiated with direct irradiation light (indicated by rough hatching in FIG. 5) through a reflector reflecting surface 313 a provided on the first scanning unit carriage 311. Reading area B
(Indicated by dense hatching in FIG. 5). The reading area B is irradiated with both the direct irradiation light and the indirect irradiation light. by this,
The light amount distribution in the reading area B is substantially trapezoidal. The light amount distribution of the reading area B is determined by the aperture width 310 c of the aperture 310 a of the xenon lamp 310 and the aperture 31
0a in the peripheral direction of the xenon lamp 310 and the mutual distance between the xenon lamp 310 and the reflector 313, but in the present embodiment, in the sub-scanning direction of the reading area B when there is no document floating (FIG. 5), the ratio of the minimum light amount to the peak light amount of the irradiated light is set to be 90% or more. That is, the reading area B in a state where the original G is not lifted, that is, in a state where the original G is
In the sub-scanning direction, as shown in FIG. 5, the ratio of the minimum light amount value generated at the end portions Be1 and Be2 of the reading area B to the peak light amount value generated at the central portion Bc of the reading area B is 310 peak light value. The percentage is set so as to be 90% or more when expressed as%.

This setting uses a xenon lamp 310 whose total light emission amount is a predetermined value, and an aperture 310 of the xenon lamp 310.
a is set to a predetermined value and the slit width 312s is set to, for example, 6 m in the sub-scanning direction.
m, and the light amount balance between the direct irradiation light and the indirect irradiation light can be realized.

However, the illuminance distribution in the actual reading area B is affected by variations in processing accuracy and assembly accuracy with respect to the set values of these elements, and a peak light amount value is not necessarily obtained at the central portion Bc of the reading area B. Not always. The position where the original document G is actually read in the reading area B is determined to be at the central portion Bc. Even in the case of deviation from the sub scanning direction, if the central portion Bc is set to the peak light amount value,
The adverse effect due to the decrease in the light quantity at the reading position is small. Therefore, it is desirable that the light amount of the central portion Bc always reaches the peak light amount value.

As described above, the reflector 313 is provided to increase the amount of light at the center of the reading area B. In other words, with only the direct light from the xenon lamp 310, the effective use of the total light amount of the xenon lamp 310, the simplification of the adjustment of the light amount distribution in the reading area B, and the reading of the document edge as a shadow as described above. This is because it is not possible to prevent the problem. In the present embodiment, the reflector 31
3, but the reflector 313 is not always necessary. This is unnecessary when realizing an inexpensive device configuration.

Next, the first scanning unit 31 is connected to the wire 4
5, the wire fixing means 316 will be described in detail with reference to FIGS. As shown in FIG. 4, the first scanning unit 31 has wire fixing means 31 at both ends.
6 is fixed to the wire 45. An opening 320 is provided in the first scanning unit carriage 311, and a wire fixing means constituted by a wire holding plate 316 a, a wire fixing plate 316 b, and a wire fixing screw 316 c is provided at a position exposed upward by the opening 320. 316 are provided.

The wire holding plate 316a is fixed to the back side of the first scanning unit 31 by fixing screws 316d as shown in FIG. The wire 45 positioned on the wire holding plate 316a is sandwiched between the wire holding plate 316a and the wire fixing plate 316b, and the wire fixing screw 316 is held.
c is screwed into a screw hole provided in the wire holding plate 316a through a small hole provided in the wire fixing plate 316b, whereby the wire can be fixed.

Next, based on FIG. 4, FIG. 5 and FIG.
Drive circuit board 3 for driving xenon lamp 310
15 will be described. As described above, the first scanning unit 31 is fixed to the wire 45 transmitting the driving force from the scanner motor 38 by the wire fixing means 316, and the forward / reverse direction in FIG. The xenon lamp 310 serving as a light source and its driving circuit board 315 are integrated with the carriage 311 to scan the original and move in the backward movement direction in FIG. Holding.

The drive circuit board 315 includes a carriage 311
The first reflection mirror 314 is disposed on the back side of the reflection surface of the first reflection mirror 314. FIG. 9 shows a schematic configuration diagram of the drive circuit board 315. On the drive circuit board 315, an input connector 315c for inserting a cable connecting the control unit and the drive circuit board 315, an inverter element 315b, a step-up transformer 315d, and an output for connecting a high voltage cable for supplying a high voltage to the xenon lamp 310 are provided. A connector 315e and the like are provided.

Next, based on FIG.
Will be described. Control unit 1 of scanner device 3
8 is a processing unit for data read by the CCD element 34,
A power supply board unit that supplies a low voltage before boosting to the drive circuit unit, a control circuit unit for controlling the scanner device 3 such as control of movement of the scanning lamp unit, and the like are provided.

The control unit 18 is disposed in a concave portion 35b provided at the bottom of the frame of the scanner device 3,
The control unit 18 does not block an area radially extending from the imaging lens 33 for reading to the D element 34. Therefore, a wider substrate can be used for the controller 18. The concave portion 35b provided at the bottom of the frame of the scanner device 3 protrudes from the bottom surface of the scanner device 3 to the extent that the foot portion 35c fits in the space formed on the lower surface side of the scanner device 3.

According to the present invention, as shown in FIG. 1, not only is the scanner device 3 serving as a document reading unit separated from the printer 2 serving as a printing unit, but also the scanner device 3 and the printer 2 are integrated. The present invention can also be applied to an image forming apparatus such as a formed copying machine. In such a case, as shown in FIG. 1, the scanner device is assembled as a single functional unit to the frame of the image forming apparatus main body, and the scanner device 3 Control unit 18
May be configured so as to protrude a portion where the should be disposed.

In this embodiment, with respect to the scanner device 3 described above, a method of installing a connection board for connecting the scanner device 3 to another device (corresponding to the printer 2 in the example of FIG. 1). Will be described below with reference to FIGS.

FIG. 11 is a perspective view showing the scanner device 3 of FIG. 10 from the back side, FIG. 12 is a perspective view of FIG. 11 with the connector cover 17a and the connector cable 17b removed, and FIG. It is a perspective view which shows schematic structure of 12 connector boards 17.

The connector board 17 includes an image processing section 17 e of the CCD element 34 and a driving section 1 of each of the scanning units 31 and 32.
7f, control unit 18 of scanner device 3 and connector board 17
And a plurality of connectors 17c for connecting the scanner device 3 to other devices. After the connector board 17 is set on the scanner device 3 so that the connector 17c is exposed from the side wall of the housing 35 of the scanner device 3 and the connector cable 17b is connected, the connector portion 17 is provided for the purpose of dust prevention of the unused connector 17c. Cover 17a
Is installed so as to cover the unused connector 17c. The mating side of the connector cable 17b connected to the connector board 17 is a connector provided in the printer 2 or the like (not shown in FIGS. 11 and 12), and the connector board connecting portion 17d is connected to the scanner device side mounting board. By connecting to the section 16a, the connector board 17 is incorporated in the scanner device 3, and the printer 2 and the like are connected to the scanner device 3.

FIGS. 14 and 15 are perspective views showing an example in which the above-described connector board 17 is attached to the scanner device 3 from the front side of the scanner device 3. FIG.
As shown in both figures, the connector board 17 is provided at the bottom of the scanner device 3 at a position where the moving area 31m of the first scanning unit 31 and the moving area 32m of the second scanning unit 32 shown in FIG. Further, the first scanning unit 3
The connector board 17 is installed on the scanner device 3 so that the moving area 31m of the first scanning unit and the moving area 32m of the second scanning unit 32 do not buffer the area above the installation position of the connector board 17. Becomes easier,
Further, even when the connector board 17 is replaced in the maintenance process, it is not necessary to remove the scanning units 31 and 32, and the maintainability can be improved.

In this embodiment, the connector board 17
Is attached to the scanner device-side mounting board 16 so that the control unit 18 of the scanner device 3 and the connector board 17 shown in FIG. 10 are connected to each other. An apparatus configuration in which the connected state functions as the control unit 18 of the scanner apparatus 3 can be easily assumed.

[0059]

As described above, according to the present invention, the connection board for connecting to another external device is arranged outside the moving space of the moving scanning body and at a position not buffered by the moving means. Therefore, not only is it easy to attach / detach to / from another external device, but also when replacing the connection board and peripheral members of the board due to aging, work can be performed without removing the moving scanning body. Convenience can be improved. Further, connection between the connection substrate and another substrate in the housing is also facilitated.

[Brief description of the drawings]

FIG. 1 is a cross-sectional configuration diagram illustrating an example of an image forming system 1 according to an embodiment.

FIG. 2 is a detailed cross-sectional view around the photoconductor 200.

FIG. 3 is a perspective view showing a main part of the scanner device 3;

FIG. 4 is a plan view of a first scanning unit 31.

FIG. 5 is a sectional view showing a main part of the first scanning unit 31.

FIG. 6 is a perspective view of a xenon lamp 310.

FIG. 7 is a perspective view of a lamp holder 318.

FIG. 8 is a detailed view showing a method of fixing the first scanning unit 31 to a wire 54.

FIG. 9 is a schematic configuration diagram of a drive circuit board 315.

FIG. 10 is a detailed sectional view of the scanner device 3;

FIG. 11 is a perspective view showing the scanner device 3 as viewed from the rear side.

FIG. 12 is a perspective view showing a connector unit.

FIG. 13 is a perspective view schematically showing a connector board 17;

FIG. 14 is a perspective view illustrating a state in which a connector board is installed in the scanner device.

FIG. 15 is an enlarged view of FIG. 14;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 image forming system 2 printer 3 scanner 4 automatic document feeder 5 sheet post-processing device 6 multi-stage paper feed unit 7 system rack 8 relay transport unit 9 discharge tray 16 scanner device-side mounting board 16a scanner device-side mounting board connector 17 connector Board 17a Connector section cover 17b Connector cable 17c Connector 17d Connector board connection section 17e Image processing section of CCD element 34 17f Driving section of each scanning unit 18 Control section 19 Cable 30 Document table 31 First scanning unit 31m First scanning unit Moving area 32 Second scanning unit 32m Moving area of second scanning unit 33 Imaging lens 34 Photoelectric conversion element (CCD element) 35 Scanner device housing 35a Scanner device housing bottom 35b Concave provided on scanner device housing bottom 35c scanner device foot 36 first guide means 37 second guide means 38 scanner motor 39 wire drive pulley 43 drive shaft 44 pulley 45 wire 46 first fixed part 47 second fixed part 48 spring 49 double pulley 55 fixed pulley 56 auxiliary pulley 310 xenon lamp 310a aperture 310b high-voltage cable 310c aperture opening width 311 first scanning unit carriage 312 slit 312s slit width 313 reflector 313a reflector reflection surface 313b reflector fixing screw 314 first reflection mirror 315 drive circuit board 315a driving circuit Fixed screw 315b Inverter element 315c Input connector (for low voltage input) 315d Step-up transformer 315e Output connector (for high voltage output) 316 Wire fixing plate 316a Wire holding plate 316b Wire fixing plate 316c Wire fixing screw 316d Fixing screw 316e Wire fixing plate bent portion 316f Notch of wire holding plate 317 Slider 318 Lamp holder 318a Depressed portion 318b Sliding protrusion 318c Screw through hole 318d Notch 319 Mirror holding section 320 Opening 321 Second reflecting mirror 322 Third reflecting mirror G Original

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Mago Masuda 22-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka F-term (reference) 2H108 AA01 DA00 JA00 5C062 AA02 AA05 AB17 AB40 AD06 5C072 AA01 BA13 EA05 MA01 MA05 MB01 RA06 XA01

Claims (3)

[Claims] 1. A document reading apparatus having a moving scanning body for reading and scanning a document in a housing and being connectable to an external device, wherein a substrate for connection with the external device is moved by moving means of the moving scanning body. Outside the area projected on the bottom surface of the housing,
A document reading device, wherein the document reading device is disposed on a bottom surface of a housing outside a moving space of a moving scanning body. 2. The document reading apparatus according to claim 1, wherein the external device connection connector provided on the connection board is provided so as to be exposed to the outside from a side wall of the housing. 3. The document reading apparatus according to claim 1, wherein the connection board includes a connector for connecting to another board disposed in the housing.