JP3002156B2 - Document exposure device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION 1. Field of the Invention
Feed one by one,Place one or more originals on the platen
Document exposure to place allRelated to the device. [0002] 2. Description of the Related Art Documents conventionally referred to as AB scans
In the scanning method, the document table (hereinafter referred to as platen)
U) Two originals of the same size A and B placed on
Of the left and right pages of a book placed in a manuscript or spread state
Scanning is performed one sheet at a time from one side and then printed out
Is obtained in such a device.
You can copy the original twice by placing the original on the platen once.
Therefore, it can be said that the reading apparatus is extremely efficient. [0003] However, the two sheets
It is important for the operator to arrange the originals on the platen without shifting.
And very cumbersome. In view of these points,
A document feeder is provided to place two originals on the platen side by side.
If image formation is performed on the two originals,
When the document size is large, place two originals completely on the platen.
When the original is outside the platen and cannot be placed
The problem of image formation may occur.
You. In view of the above problems, the present invention provides
One sheet at a time to the platen,Place one manuscript on the platen
Is a document exposure for placing multiple sheets side by side.Device that
A document feeder for arranging multiple sheets on the platen is provided.
With the original protruding from the platenManuscript
exposureCan be avoidedManuscript
exposureIt is intended to provide a device. [0005] In order to achieve the above object,
According to the present invention,Document exposureThe device places the original on the platen
Feed one sheet at a time and place one or more originals on the platen
A document feeding means to be placed side by side and a document feeding means
Detector that detects the size of each of the multiple originals sent
And one sheet placed on the platen by the document feeding means.
Or multiple originalsExposure means for exposing
On the manuscript standMultiple documentsExposeMulti-page mode, or
IsOne sheet on the platenManuscriptExposeOne page mode
OrDiscriminationModeDiscriminationMeans,Mode determination meansBy
In multi-page modeDiscriminationIf the
Each of multiple document sizes to be placed on the platen
When it is detected that is smaller than the predetermined size,
The exposing unit is caused to execute the page mode, and the platen is detected by the detecting unit.
Of multiple documents to be placed onThe size of a document
ButIt is detected that the size is smaller than the specified size,
When the size is detected to be larger than the predetermined size,
Switch to one page modeExposure meansControl means to be executed by
It is comprised including. [0006] BRIEF DESCRIPTION OF THE DRAWINGS FIG.
Examples will be described in detail. FIG. 1 shows one embodiment of the present invention, where
Reference numeral 1 denotes an image reading device (hereinafter simply referred to as a reader).
100 is provided on the platen glass 2 of the reader 1
Automatic document feeder (hereinafter referred to as ADF).
In the reader 1, the entrance tray 10 is
1 from the original paper 102 sent to the platen glass 2
The recorded information written on the side in contact with the surface of the glass 2 is as follows.
It can be read by the device below. That is, 3 runs horizontally on two rails 4
A scanning table that can be moved freely, and an irradiation lamp is provided on the scanning table 3.
5, a reflection mirror 6, and a reading sensor for reflected light from the manuscript paper 102.
A lens array 8 for focusing light is provided on the lens 7. What
The reading sensor 7 here is, for example, a charge cup.
Pulled device, that is, the arrangement of CCD elements
Be composed. The scanning table 3 is located between the pulleys 9A and 9B.
Both ends of the stretched endless wire 10
Pulley 9A is connected via belt 12
The scanning table 3 is driven by the arrow 13
Run freely in any direction. 14 is attached to the rotating shaft of pulley 9B
Is a spring that keeps the endless wire 10 in tension.
You. Here, the pulleys 9A and 9B are used to scan the wire 10.
It should be provided slightly below the fixed position to the stand 3
So that the carriage of the scanning table 3 is biased toward the rail 4.
I do. Reference numeral 15 denotes one end of which is connected to the electric board 16 and the other end.
Is fixed on the scanning table 3 and is a flexible wiring.
Mounted on scanning table 3 by flexible wiring 15
An electric signal from the reading sensor 7 is output to the substrate 16. Change
Also, S₀ , S₁And S_TwoIs a photo interrupter
Of which S₀ Detects home position of scanning table 3
What to do, S₁ Indicates that the scanning table 3 runs at a constant speed and
The one that detects this when it comes to the starting point, and S_Two
Is for detecting the end point of the original reading.
An engagement cam 17 is provided on the lower surface of the scanning table 3 so as to protrude therefrom.
Tointerrupter S₀ , S₁And S_Two Inspect this cam 17
Knowing the travel position of the scanning table 3 as described above
Can be detected. The scanning table 3 travels as described above.
The motor 13 is driven by
Is performed by a rotary encoder (not shown). Scratch
Then, the light was irradiated by the lamp 5 while the scanning table 3 was running.
The reflected image from the manuscript paper 102 is read via the lens array 8
An image formed on the sensor 7 and constituting the reading sensor 7
Read data is obtained by output signals from various CCD elements.
It is. Next, an automatic document feeder (ADF) 100 will be described.
Will be explained. The entrance tray 101Paper feed1st salary arranged on the side
The paper roller 103 is composed of rollers 103A and 103B.
The paper roller 104 is composed of rollers 104A and 104B.
The pressing roller 103A has a friction coefficient of, for example, rubber.
It is formed of a large material, and is formed of the other feed roller 104A.
Swingably held around shaft 105 via feed arm 106
Further, the holding roller 103A and the feed roller 104A are
Can be rotated at the same speed and in the same direction via
(See FIG. 2). Further, the roller 10 of the first paper feed roller 103
The shaft of 3B is fixed to the tray 101 side, and
The driven roller 104B of the roller 104 is biased toward the roller 104.
It is configured to be. 108 is the first paper feed roller 103
The presence or absence of a document provided between the second paper feed roller 104 is detected.
For example, it is a reflection-type first detection sensor. That's AD
The operation of the document feed mechanism of F100 is explained.
First, when a document feed command is given,
One paper feed roller 103 is separated from one roller 103B.
Presser roller 103A, which was kept in the
Press the paper, and hold the leading edge of the original paper 102 between rollers to feed paper.
Make it possible. Thus, the rollers 103A and 104A
The original paper 102 is rotated by the first paper feed roller 103 and the second paper
The next-stage document feeder sandwiched between the paper feed rollers 104
It is led to construction. Next, the document feeding mechanism will be described.
111 and 112 are endless first and second belts, respectively.
Belts, and in this example, these first belts 111 and 111
The second belt 112 is used as an independent feeding mechanism
Are arranged in series along the original feeding direction on
2 has a width that can cover the entire surface,
A rubber-based material with a sufficient coefficient of friction is coated on the surface.
The document paper 101 by friction.
To do. Reference numerals 113 and 114 denote driving rollers of the first belt 111.
Roller and turn roller, 115 and 116 are the second belt
112 drive roller and turn roller, 117 the first bell
And 111 are the presser rollers on the second belt 112 side.
Roller, and is controlled by these holding rollers 117 and 118.
Do not press the original paper 102 lightly on the platen glass 2
To be transported. [0019] 119A and 119B are a carry-out roller and its pusher.
The original paper 102 that has been read is a roller
Roller 119A while being held between rollers 119A and 119B.
The paper is discharged onto the paper discharge tray 120 by rotation. Also, at the entrance of the document feeding mechanism, that is,
Immediately after the second paper feed roller 104, the leading edge of the original paper 102 is detected.
Tip detection sensor (hereinafter referred to as second detection sensor)
121, and immediately after the unloading section from the second belt 112,
A discharge detection sensor that detects document discharge (hereinafter, the third detection
122 (referred to as a sensor). These sensors
Both 121 and 122 preferably use reflective sensors.
However, in the third detection sensor 122, as described later,
It is also used for jam detection. FIG. 2 shows the structure of the drive unit of the document feeder 100.
Where 131 is the drive motor and 132 is the drive motor.
Clutch shaft driven by a gear 131 through a gear group 133
It is. The clutch shaft 132 has a second electromagnetic clutch 134
And a drive pulley 135,
When the switch 134 is turned “off”, the drive pulley 135
The second belt driving row driven through the belt 136
The connection between the shaft and the shaft 115A is released, so that the second belt
112 can be stopped. The drive motor 131 is driven via a gear group 133.
To drive the intermediate shaft 137, and the intermediate shaft 137 and the first belt
The belt 138 stretched between the drive roller shaft 113A and the
The one belt 111 is driven. Furthermore, the roller shaft 113A
Is provided with a first electromagnetic clutch 139.
The first bell is set by setting the latch 139 to the "off" state.
Drive 111 can be stopped. 141 is a pulse interlocking with the clutch shaft 132
Reference numeral 142 denotes a photo interrupter, and a clutch shaft 132
Rotation speed of the pulse plate 141 and the photo interrupter 142
Is detected by the combination of 143 is the roller shaft 11
The pulse plate linked to 3A, 144 is a photo interrupter
The rotation speed of the roller shaft 113A is
It is detected by a combination with the interrupter 144. The roller shaft 113A has a spring clamp (not shown).
A pulley 145 is attached via a latch.
The latch is not controlled on / off by the plunger 146.
And the roller shaft 10 of the feed roller 104A via the belt 147.
5 is rotated or stopped, and the first paper feed roller 103 and
Or the second paper feed roller 104 is driven or stopped, and the first paper feed
Driving or stopping the roller 103 and the second paper feed roller 104
Can be controlled. One more plunger 14
8 is for raising and lowering the paper feed arm 106.
is there. In FIG. 1 and FIG.
F100 is disposed between the first belt 111 and the second belt 112.
This is the fourth detection sensor.
Original paper 102 moves from the first belt 111 to the second belt 112.
It can detect whether or not it has been sent, and will be described later.
Output the correction signal of the reading position of multiple originals.
Noh. Next, two original papers 102A and 102B (hereinafter, referred to as two
Are referred to as A and B).
State sent to Latin glass 2 and set at reading position
The state is shown in FIG. Here, X is a sub
The scanning direction, Y, is determined by the reading sensor 7 of the reader 1.
In this example, the scanning table 3 and the reading
Preliminary scanning in the X and Y directions performed by the sensor 7
The coordinates of the manuscript papers A and B are checked by the running. That is, the original paper A is moved in the sub-scanning direction.
Tip V at X_TAAnd rear end V_BAAnd in the main scanning direction Y
Tip H_TAAnd rear end H_BAAnd on the manuscript paper B
The tip V in the sub-scanning direction X_TAAnd rear end V_BB
And the tip H in the main scanning direction Y_TBAnd rear end H_BBWith
Obtain information about the coordinates and copy each of manuscript paper A and B
The size can be determined. FIG. 4 shows the position of the ADF 100 as shown in FIG.
The originals A and B sent to the
Apply this invention to a printer so that copying is performed after
An example is shown below. Where 400 is the printer and 401
Is a print head that outputs print information on recording paper,
402 and 403 are two paper feeding units respectively. Furthermore,
411 and 412 are between reader 1 and printer 400 and
Each data provided between Reader 1 and ADF100
A data bus 412 between the reader 1 and the ADF 100.
And the information read from the reader 1 is included.
Output data to the printer 400 via the data bus 411.
Output to the print head 401 based on the read information.
More printing is performed. Therefore, in this example, the device is placed as shown in FIG.
Prescanning the originals A and B
And the respective sizes of the manuscript papers A and B were determined.
Then, the recording paper corresponding to the size is supplied as shown in FIG.
Select and supply from paper units 402 and 403
The information read earlier on the selected recording paper
Can be output. Subsequently, according to the present invention,Document exposureExample of device
Will be described with reference to FIG. The control circuit includes a reader section 500 and a printer section 60.
0, and the reader unit 500 and the printer unit 600
Independent central processing units CPU501, ROM502, RAM503 and
And a CPU 601, a ROM 602, and a RAM 603.
4 and 604 connected to each other. In the reader section 500, 505 is an ADF
ADF unit I / O 506 connected to the unit is connected to the reader unit
This is the reader I / O.
This is stored in the ROM 502 as a system. Also a reading sensor
The output from 507 is stored in memory 508 and
Images are sent to the printer unit I / O 605 of the printer unit 600 according to the command.
Output as information. On the other hand, in the printer section 600, the paper feed section I / O 606
When information such as paper size is supplied to the CPU 601,
The CPU 601, based on these information,
Place each original correctly at the specified loading position.
A series of operations can be performed. Next, the present invention will be described with reference to FIGS.original
Manuscript exposureADF sending of two originals by an example of the device
Detailed procedures from creation to reading operation and printing
I do. FIG. 5 shows the general flow.
At step 231 whether or not the mode is the continuous original copy mode.
And, in steps 232, 233 and 234, ADF100,
In the reader 1 and the printer (not shown)
After it is determined whether or not
If so, in step 235 the first belt device and
Two original sheets on the platen 2 using the second belt device
A subroutine described later for setting A and B is executed.
Give. Thus, in the next step 236, the manuscript paper A
Prescanning to read the position coordinates of A and B
And obtained by pre-scanning in step 236.
Determine the size of the original paper from the coordinates, and in step 237
Execute printing on the recording paper corresponding to the paper, and
In step 238, determine whether copying has been completed
A series of operations from to printing is completed. FIG. 6 shows the operation performed in step 235 of FIG.
This is a subroutine to be executed. Mainly referring to FIG.
First, in step 201, the presence or absence of manuscript paper is determined.
If there is manuscript paper, drive motor 131 is started in step 202.
The first electromagnetic clutch 139 and the second
With the electromagnetic clutches 134 both in the "ON" state, the first
Monitoring the drive of the belt 111 and the second belt 112,
Activate plungers 146 and 148 in step 204
To cause the first document paper A to be nipped by the first paper feed roller 103.
In addition, the first paper feed roller 103 and the second paper feed roller 104
The document paper A is sent out to the first belt 111 by the rotation of. Then, the original paper A is sent out by the second detection sensor.
If detected by 121, the plunger is
146 and 148 in the “OFF” state, that is, paper feeding operation
Is stopped. Continue from step 206
In step 210, the first original paper A is detected by the fourth detection sensor 150.
Procedure for sending by the first belt 111 system until it is detected
At step 206, the second detection sensor 121 is turned off.
It is determined whether or not it has become. If the sensor 121 is turned off,
It is determined that the trailing edge of the detection paper A has passed, and
To determine whether the fourth detection sensor 150 has been turned on.
to decide. Further, in step 208, the print mode
Judge whether the document is a two-page copy, and
For example, it is determined that the mode is one-page copying, and the process branches to step 221.
You. Further, in step 206, the second detection
If the intellect sensor 121 is in the "ON" state, step 209
To whether the fourth detection sensor 150 is in the “ON” state
It is determined whether or not the document paper A is in the fourth detection
Long document that extends from the sensor 150 to the second detection sensor 121
Is determined, and the one-page copy mode is set to step 221.
Branch. In step 209, the fourth detection cell
If the sensor is “off”, proceed to step 210, where
The time Tj set to judge the occurrence of jam
It is determined whether or not it has passed. If not, step
Returning to step 206, if the time Tj has elapsed, a jam occurs.
Error processing is performed as if it was generated. Thus, in the case of the one-page copy mode, the
Time T set for long feed in step 221₁ But
It is determined whether or not the time has elapsed, and the time T₁ After the step
Proceed to 222, pass 1-page mode ready, and step 219
With clutches 139 and 134 "off" and the first bell
Stop the driving of the system 111 and the second belt 112, and
At step 220, the drive motor 131 is turned off. In step 208, a two-page copy mode is set.
If it is determined that the
Check the existence of the document B, and if not, shift to the one-page copy mode.
However, if there is a document B, the process proceeds to step 212, where the document is supplied again.
Start the paper, and in steps 213 to 215
The same procedure as in the case of the original A is repeated. In step 214, the second detection
If the sensor 121 is not "off", the process branches to step 216.
It is determined whether or not the fourth detection sensor 150 is “ON”,
If not “on”, proceed to step 217 to determine jam
If "ON", it is determined that the manuscript paper B is long.
In this case, the two manuscript papers A and B are platen glass
Shift to 1-page copy mode because it cannot be set on 2
And send it out so that only the original paper A is copied.
Execute the order. In step 214, the second detection sensor 121
Is determined to be “off”, and the
4 If the detection sensor 150 is determined to be “ON”,
The first original B was also set on the platen glass 2
It is confirmed that the clutch 13
9 and 134 are turned off and the first belt 111 and the
Stop the 2-belt 112 system, and in the next step 220,
Data 131 is turned off. Step 223 is a step
When the original paper is not detected in A201,
The following is a procedure for notifying “Ready”. Next, referring to FIG. 7, two original sheets A and
In order to recognize the original position from B, the reader 1
The prescanning performed, ie, the steps in FIG.
The subroutine in step 236 will be mainly described with reference to FIG.
explain. First, in step 251, it is determined whether the mode is the two-page mode.
Then, if it is a two-page mode, proceed to step 252.
To rotate the motor 13 forward, and then read the original in step 253.
In step 254, the reading CCD sensor 7
It is determined whether the state is “ON”. That is,
If the sensor 7 is "ON", the sensor 7
Tip V of_TBIs detected, so step 25
Go to 5 and this tip V_TBWith respect to the coordinates in the X direction at
The information is read into memory, and in step 256,
This tip V_TBAt the leading and trailing edges of the manuscript paper B in the Y direction at
Some H_TBAnd H_BBRead information about each coordinate
No. Thus, at step 257, (H_BB-H_TB)
In the main scanning direction Y to recognize the paper size and direction.
Calculate the width and read the original paper B in the next step 258.
And in step 259, the reading sensor 7
Judge whether or not the sensor 7 is “off”.
If "f" is reached, in step 260, the trailing edge V of the manuscript paper B_BB
Reads information about coordinates at
261 at (V_BB-V_TB) To calculate the length in the sub-scanning direction X
Then, in step 262, the size of the original
You can get the direction. The following steps 263 and subsequent steps make the original
The position of the manuscript relative to manuscript A is obtained.
In step 264 in the original reading state of the
It is determined whether or not the sensor 7 is "ON".
The leading end V of the original paper A in the sub-scanning direction._TAIs detected
And 265_TAAbout the coordinates in the X direction of
The information is read, and the process further proceeds to step 268, where
H in the main scanning direction Y_TAAnd rear end H_BACoordinate information
Is read into the memory. Next, at step 269, (H_BA-H_TA),
That is, the width of the document A in the Y direction is calculated, and
0 to continue reading the original.
It is determined whether or not the sensor 7 is “off”. Thus, at step 271, the sensor 7
If it is determined that the paper is
Was received, (Step 272)_BA-V_TA) By manuscript paper
Calculate the length of A in the X direction.
The size and orientation are determined. Then, in step 275, the motor
13 to return the scanning table 3 to the initial position, and
Prepare for ning. Next, referring to FIG.
Output each document information on one sheet of recording paper
The printing procedure to be performed will be described. First, in step 301, as shown in FIG.
Of the originals set in
Check nothing, if not, go to step 300, for example
“WAIT” is displayed. If “Yes”, go to step 302
Select the paper feed unit for the recording paper corresponding to the original paper B, and
While feeding only one sheet of recording paper corresponding to step 303,
In step 304, the reader 1
Output the information from the manuscript paper B to the printer 400.
In step 305, the output is continued as long as the information is available.
Then, in step 306, copying of the manuscript paper B is completed.
It is determined whether or not. When the operation is completed,
In the same way as in the case of
Judge whether or not there is a blank sheet of paper.
Proceed to step 308 to select the paper feeder,
At steps 310 and 311, adjust the timing
And output the original information.
It is determined whether the process is completed. In the above description, the ADF has two transport bases.
Although a tilt system was used, the present invention is applied to such a form of transport.
It is not limited to the case of feed system, but one transport belt
If you use RDF or RDF,
By controlling the paper feed system, continuous feed of two pages can be performed.
It goes without saying that it can be applied in the same way because it is possible
No. In this embodiment, the original papers A and B
To obtain information about the position coordinates, use a contact-type sensor.
Used, but these sensors are also limited to close contact type
Instead of using a reduced type or imaging camera type
Needless to say, Further, information from two original sheets is output.
In the above example, the target to be processed is a printer.
The object to be supplied is not limited to this, and for example, information
Information is stored in another storage medium, etc.
Can also be applied when storing information from manuscripts
You. In the above embodiment, the prescanning
Information about the position coordinates of the original
Scans an image to read it.
Just store the information in the memory and shift the position between the original and paper.
May be configured to output while compensating for. Furthermore, the present invention relates to another modification of the optical image
Also applies to analog copiers that project light directly on photoconductors
it can. That is, in this case,
Two sheets of original paper are sent out by the ADF placed on the platen.
And position and size of each manuscript paper
After separating, scan and feed the document according to each document position.
To be configured to be synchronized with paper timing
Therefore, the purpose is achieved. Further, the present invention is applied to a two-sided copying machine,
And B document information on both sides of the recording paper
It goes without saying that you can do it. [0060] As described above, the present inventionAccording to
If it is determined that the printer is in the multi-page mode,
The size of each of the multiple originals to be
Execute multi-page mode when the following is detected
Of the originals to be placed on the platen
The size of the original is detected to be smaller than the specified size.
Detected that the size of the other document is larger than the specified size.
When it is issued, it is switched to one page mode and executed,
For multiple manuscripts to be placed on the platen,
If originals of different sizes are mixed, multiple originals
Placed on the platen and those originals protrude from the platen
Part of the manuscript when it cannot be completely placed without
Protrudes from the platen, and in that state,
It is possible to prevent the document from being exposed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram showing an example of a configuration of a document exposure apparatus according to the present invention. FIG. 2 is a configuration diagram of the example shown in FIG. 1 as viewed from the top of an automatic document feeder (ADF). FIG. 3 is a diagram illustrating an example of a mounted state of two documents placed on a platen by the ADF illustrated in FIG. 1; FIG. 4 is a block diagram illustrating an example of a basic configuration when the present invention is applied to a printer. FIG. 5 is a flowchart of a general flow for executing printing using the document exposure apparatus according to the present invention. FIG. 6 is a flowchart of a subroutine for controlling the ADF shown in FIG. 1; FIG. 7 is a flowchart of a subroutine relating to prescanning of the ADF shown in FIG. 1; FIG. 8 is a flowchart of a subroutine at the time of printing in the examples shown in FIGS. 1 and 4; FIG. 9 is a configuration diagram of a control circuit provided in an example of the document exposure apparatus according to the present invention. [Description of Signs] 1 Image reading device 2 Platen glass 3 Scanning table 4 Rail 5 Irradiation lamp 6 Mirror 7 Reading sensor 8 Lens array 9A, 9B Pulley 10 Endless wire 12 Belt 13 Motor 14 Spring 15 Flexible wiring 16 Electric board S ₀ , S ₁ , S ₂ Photo interrupter 17 Engaging cam 100 Automatic document feeder (ADF) 101 Inlet tray 102, 102A, 102B, A, B Document paper 103, 104 Feed rollers 103A, 103B, 104A, 104B Roller 105 Axis 106 Feed arm 107 Belt 108 First detection sensor 111,112 Belt 113,114,115,116,117,118 Roller 119A Discharge roller 119B Press roller 120 Discharge tray 121 Second detection sensor 122 Third detection sensor 131 Drive motor 132 Clutch shaft 133 Gear group 134,139 Electromagnetic clutch 135 Drive pulley 136,138,147 Belt 137 Intermediate Shaft 141, 143 Pulse plate 142, 144 Photo interrupter 145 Pulley 146, 148 Plunger 150 Fourth detection sensor

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) G03G 15/00 107 G03G 15/04-15/04 120 G03G 15/36 G03G 21/00 370-520 G03G 21 / 14 H04N 1/38-1/393

Claims (1)

(57) [Claims] A document feeder for feeding a document one by one to a platen, and placing one or more of the documents side by side on the platen; and a size of a plurality of documents fed by the document feeder. Detecting means for respectively detecting one or more originals, and exposing means for exposing one or more originals placed on the original platen by the original feeding means, and exposing a plurality of originals on the original platen Multi-page mode,
Or, a mode determining means for determining a whether one page mode for exposing the one document on the document table, when determination is <br/> is that a plurality of page mode by said mode discriminating means, said detecting when the respective sizes of a plurality of originals to be placed is detected to be below a predetermined size before Symbol platen by means, the said plurality of pages modes
To execute an exposure means, among the plurality of documents to be placed on the platen by the detection means, the size of a document
The predetermined size is detected to be less, when <br/> the size of the other document is detected to be greater than the predetermined size, the control means to be executed by said exposure means is switched to the 1-page mode A document exposure apparatus, comprising: