JPH05308452A - Picture reader - Google Patents

Abstract

(57) [Abstract] [Purpose] An image is read with a desired pull-out amount without being limited by the pull-out amount of the document exposure section.
Further, the upper surface of the copying machine can be completely used as a part of the desk, and the image can be read without pulling out the document exposing section. An image reading unit, a drawer unit that accommodates the image reading unit so as to be movable along a document surface, and a drawer unit that is installed so as to be drawn out from the main body of the image reading apparatus; A first document placing means made of a transparent member, a second document placing means for placing a document, a document feeding means for feeding the documents one by one to a predetermined document reading position, and an image First control for stopping the reading means at a predetermined original reading position to read the original image, and moving the image reading means from the reading start position on the front side in the pull-out direction of the drawer section to the rear side to read the original And a control means for performing two controls of the second control for performing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image reading apparatus used in a copying machine, a facsimile machine and the like, and more specifically, an image reading apparatus in which a scanner portion can be pulled out from an image reading apparatus main body and used. Regarding

[0002]

2. Description of the Related Art In recent years, as one form of a copying machine, a copying machine having a copying machine built in a drawer portion of an office desk has been developed. Specifically, as shown in “Desk with Built-in Copying Machine” in Japanese Utility Model Laid-Open No. 55-6986, a copying machine is built in a drawer part of an office desk, and an image forming part and a document exposing part, or a manuscript. Only the exposure unit can be pulled out to the front, and all operations such as replenishing paper, inserting manually fed sheets, taking out ejected paper, and feeding sheet originals using the ADF can be performed from the front of the main unit Copiers are being developed.

[0003]

However, according to Japanese Utility Model Laid-Open No. 55-6986, the original exposure unit is pulled out and used as necessary, so that the upper surface of the copying machine is completely covered by a part of the desk. However, since the image reading is performed in a state where the original exposure section is completely pulled out, there is a problem that the space required for use is large and the usability is poor.

In particular, even when reading an image of a small original, it is necessary to pull out a predetermined amount or more, which is inconvenient. Further, there is a problem that the copying machine itself cannot be arranged in a place where a space for drawing out the document exposure unit by a predetermined amount or more cannot be secured, or that the copying machine cannot be used.

Further, since it is necessary to pull out the document exposing portion by a predetermined amount or more, there is a problem in that it is an obstacle if the document exposing portion is pulled out, and the work is troublesome to pull out each time it is used.

The present invention has been made in view of the above, and it is an object of the present invention to read an image with a desired withdrawal amount without being limited by the withdrawal amount of the document exposure section.

Further, the present invention has been made in view of the above, and the upper surface of the copying machine can be completely used as a part of the desk, and the image can be read without pulling out the original exposing section. With the goal.

[0008]

In order to achieve the above object, the present invention stores an image reading means for reading an original image as digital information, an image reading means movably accommodated along the original surface, and A drawer portion that is installed so as to be able to be drawn out from the main body of the image reading apparatus, a first original document placing means made of a transparent member provided on the upper surface of the drawer portion, and a second original document placing device for placing the original document. Means, an original feeding means for feeding the originals placed on the second original placing means one by one to a predetermined original reading position, and an image reading means for stopping the original at the predetermined original reading position. Two types of control are performed: a first control for reading an image and a second control for moving the image reading means from the reading start position on the front side in the pulling direction of the pullout portion to the back side to read a document. Image reading device including control means It is intended to provide.

[0009]

In the image reading apparatus of the present invention, when the drawer is pulled out by a required amount and the original is placed on the first original placing means, the control means causes the image reading means to move to the first original placing means. The original is read by moving it along the surface of the original placed. Further, when the second original placing means is pulled out, the original is placed and returned into the main body of the image reading apparatus, the control means feeds the original with the image reading means stopped at a predetermined original reading position. An image is read by feeding the originals one by one from the second original placing means by the feeding means.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the case where the image reading apparatus of the present invention is applied to a cabinet copying machine will be taken as an example, [schematic construction of cabinet copying machine], [configuration of control system], [configuration of scanner unit (image of the present invention Reading device)] will be described in detail with reference to the drawings.

[Schematic Configuration of Cabinet Copier] FIG.
Shows a schematic configuration of the cabinet copying machine 10 of the present embodiment. The cabinet copying machine 10 according to the present embodiment has a configuration in which a plurality of units obtained by dividing each unit related to the image forming process into units and accommodating them into a unit accommodating portion of the copier body. As the units, as shown in the figure, a scanner unit 101 (image reading apparatus of the present invention) for reading original images, a sorter / paper discharge unit 102 for sorting and discharging transfer paper, and an image forming on the transfer paper. An image forming unit 103 for performing, a reversing unit 104 for reversing the transfer sheet, a sheet feeding unit 105 for feeding the transfer sheet,
And 106. In addition, the cabinet copier 10
A main control box 107 is arranged on the inner side of the main body of the.

The height of each unit is the same as that of the reversing unit 104.
Is 50 mm, the image forming unit 103 and the paper feeding unit 10
5, 106 is 100 mm, and the scanner unit 101 and the sorter / paper discharge unit 102 are 150 mm. In addition, the cabinet of the cabinet copying machine 10 that houses these units has a dimension from the top surface of the device to the bottom plate that is a common multiple of the height of each unit, 650 mm.
Is configured to be. Although not shown,
Instead of the sorter / paper discharge unit 102, only the paper discharge unit can be configured with a height of 50 mm.

Further, the cabinet copying machine 10 can be set to a height equal to the height of a general office desk, which is about 700 mm with casters attached, and can be laid out on the desk side. I am trying.

The width of each unit is not more than a certain size, and the unit is set by inserting it from the front of the cabinet copying machine 10. The other units except the scanner unit 101 have a depth less than a certain size, and the cabinet copier 1
A sufficient space for accommodating the main control box 107 is secured in the rear part of 0.

[Structure of Control System] The cabinet copying machine 10 of the present embodiment includes a main control unit 107a (master unit) arranged in the main control box 107 and each unit (scanner unit 101, scanner unit 101, etc.). Hereinafter, various functions (copy, FAX, printer, etc.) can be realized in combination with a master unit and a slave unit.

FIG. 2 shows an overall control block diagram. As described above, since the slave unit can be mounted on any stage of the unit housing portion of the copying machine body, it is preferable to minimize the signal line through the connector. Therefore, the main control unit 107a is provided in the main control box 107 on the main body side, and each slave unit has a sub-control unit that controls each unit.

As the sub-control unit, as shown in the figure, the ADF
There are a control unit 108a, a scanner control unit 108b, a sorter control unit 108c, a reversing unit control unit 108d, an image forming control unit 108e, and a paper feed control unit 108f.

By fitting the connector portion mounted on the main control box 107 and the connector portion mounted on the slave unit, a communication signal for communicating between the main control portion 107a and each sub-control portion, and a paper A common signal bus 109 used for carrier synchronization signals, etc., and a video signal necessary for operating in real time between slave units,
The dedicated signal bus 110 used for the video synchronization signal and the wiring for supplying power from the main power supply unit 107c to the slave unit are simultaneously formed. Although detailed description is omitted, electrical connection is facilitated by performing control signals of the main control unit 107a and each sub control unit by serial communication using optical fibers.

In the main control box 107,
The operation panel control unit 107b is arranged, and it is possible to add an optional controller such as a printer controller control unit 107d and a FAX controller control unit 107e.

The main controller 107a executes sequence control, communication control, various mode controls in the copy mode, and serviceman mode control.

The sequence control is a control for giving a command to each sub-control unit so that the sequence becomes a sequence corresponding to each image forming mode. At this time, the sub control unit that has received the command operates based on the video synchronization signal and the paper conveyance synchronization signal at a predetermined timing. Communication control is control for exchanging commands and statuses with the sub-control unit. In addition, in each operation mode,
Arbitration between each control unit is performed. The various mode controls in the copy mode are performed so as to operate according to each copy mode. At this time, necessary commands are transmitted to each sub-control unit so that the slave unit can perform the necessary operations. In serviceman mode control, control is performed so that the operation is necessary for inspection, repair, etc. [Configuration of Scanner Unit (Image Reading Apparatus of the Present Invention)] The configuration of the scanner unit 101 will be described with reference to FIG. Scanner unit 1 for reading original images
01 is an A section (automatic document feeder) that conveys and discharges a sheet original, and B section (drawer section) that reads a copy original.
Is roughly divided into

The section A includes a document tray 101a for stacking sheet documents, a pickup roller 101b for feeding the sheet documents one by one, a tray bottom plate 101c for bringing the sheet documents into contact with the pickup roller 101b, and a sheet document inverted to read the document. And a discharge roller 104e that discharges a sheet document from which an image has been read from the reading unit.

The portion B includes a contact glass 101f, a carriage (running body) 101g, a moving roller 101h for the carriage 101g, a fluorescent lamp 101i incorporated in the carriage 101g, a lens array 101j, and a 1 × CCD linear image. It is composed of a sensor 101k, a CCD preamplifier substrate 101l, and a CCD drive substrate 101m. In the figure, P ₀ indicates the position of the carriage 101g when reading the sheet original, and P ₁ indicates the carriage 10.
The home position of 1g is shown.

The parts A and B are shown in FIG.
As shown in (b) and (c), they are attached so that they can be pulled out. In the figure, reference numeral 500 indicates the arrangement of the operation panel section.

With the above arrangement, the operation will be described in the order of copying a sheet original and a book original.

When copying a sheet document First, as shown in FIG. 4B, the section A is pulled out, the sheet document is placed on the document tray 101a, and the side fence 1
01n is moved and set to the original size. After that, when the section A is pushed back and set in the apparatus, the scanner control section 108b lifts the tray bottom plate 101c and abuts the sheet document on the pickup roller 101b.

After that, when the copy start key of the operation panel unit 500 is pressed, the scanner control unit 108b
Moves the carriage 101g from the home position P ₁ to the position P ₀ at the time of reading the sheet document. On the other hand, the pickup roller 101b is driven to feed the sheet originals one by one. The fed sheet original is inverted through the turn roller 101d and reaches the reading unit. The carriage 101g reads the image of the sheet original conveyed to the reading unit. That is, the original image is read by the original moving method. The sheet original from which the image has been read is contact glass 101 by the discharge roller 101e.
It is discharged onto f and stacked. When the above operation is completed for all sheet originals, the B portion is pulled out and the sheet originals are taken out.

When copying a book document As shown in FIG. 4 (c), a necessary amount of the B portion is drawn out in accordance with the size of the book document, and the book document is set on the contact glass 101f. When the copy start key of the operation panel unit 500 is pressed, the scanner control unit 10
8b is a home position P pulled out together with the B part.
_The book original is read while moving the carriage 101g in ₁ toward the rear side of the apparatus. At this time, since the image is digitally read, it is not necessary to pull out and use the entire part B. In other words, the contact glass 101
Even when pulling out f to perform copying, the work can be performed in the minimum necessary space.

Although a book original is copied here, it is needless to say that a sheet original or a cut and pasted original can be similarly copied.

As described above, in the image reading apparatus of this embodiment, the sheet originals can be automatically conveyed one by one to easily read the image. Further, the image reading of the book manuscript need only be pulled out by the required amount of the B portion, and the operation is simple.

Further, by setting the home position (image reading start position) of the carriage to the front side of the B section (drawing section) in the pulling direction, the pulling amount according to the document size can be used immediately without performing unnecessary reading scanning. The image reading can be started immediately, and the reading productivity can be improved.

In addition, according to the automatic conveyance of the sheet original,
Since the image is read by the document moving method, the automatic document feeding mechanism can be simplified and the device can be downsized. Also,
By using the contact glass as a paper ejection tray, the number of parts of the device can be reduced.

Further, in the above-mentioned embodiment, the sheet A is pulled out and the sheet original is set on the original tray 101a.
For example, a configuration may be adopted in which an insertion port is provided on the front surface of the document tray 101a, and when a sheet document is inserted through the insertion port, it is automatically conveyed to the position of the pickup roller 101b.

[0034]

As described above, the image reading apparatus of the present invention stores the image reading means for reading the original image as digital information, the image reading means movably accommodated along the original surface, and the image reading apparatus. A drawer portion that is installed so as to be able to be pulled out from the main body, a first original document placing means made of a transparent member provided on the upper surface of the drawer portion, and a second original document placing means for placing an original document, A document feeding unit that feeds documents placed on the second document placing unit one by one to a predetermined document reading position, and an image reading unit is stopped at a predetermined document reading position to read a document image. And a second control for moving the image reading means from the reading start position on the front side in the pull-out direction of the drawer portion to the back side to read the document. Therefore, the Without Restricted possible to the amount of out, it is possible to perform image reading in any drawer required amount. Further, the upper surface of the copying machine can be completely used as a part of the desk, and the image can be read without pulling out the document exposing section.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a schematic configuration of a cabinet copying machine of this embodiment.

FIG. 2 is an explanatory diagram showing an overall control block diagram.

FIG. 3 is an explanatory diagram showing a configuration of a scanner unit.

FIG. 4 is an explanatory diagram showing a pulled-out state of an A section and a B section of the scanner unit and an arrangement of an operation panel section.

[Explanation of symbols]

10 Cabinet Copier 101 Scanner Unit 101a
Document tray 101b Pickup roller 101c
Tray bottom plate 101d Turn roller 101e
Discharge roller 101f Contact glass 101g
Carriage 107a Main controller 108b Scanner controller

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hiromi Ogiyama 1-3-6 Nakamagome, Ota-ku, Tokyo Inside Ricoh Co., Ltd. (72) Shozo Ishibashi 1-3-6 Nakamagome, Ota-ku, Tokyo In Ricoh Co., Ltd. (72) Inventor Masaru Shiina 1-3-6 Nakamagome, Ota-ku, Tokyo In Ricoh Co., Ltd.

Claims (1)

[Claims] 1. An image reading unit for reading a document image as digital information, and a drawer unit for accommodating the image reading unit so as to be movable along a document surface and being installed so as to be drawn out from the main body of the image reading apparatus. A first manuscript placing means made of a transparent member arranged on the upper surface of the drawer, a second manuscript placing means for placing a manuscript, and a second manuscript placing means. Document feeding means for feeding the document being read one by one to a predetermined document reading position, first control for stopping the image reading means at the predetermined document reading position and reading a document image, and And a control means for performing two kinds of control of the second control for moving the image reading means from the reading start position on the front side in the pulling-out direction of the drawer portion to the back side. Image reading device.