JPS62272243A - Automatic original carrying device - Google Patents

Abstract

PURPOSE:To simplify operation and to improve working efficiency by switching the working state/non-working state of an automatic original carrying device and a copying device by a detecting signal obtained from a cover member. CONSTITUTION:An original Pb is set up on a digitizer 42, the digitizer 42 is depressed from the surface of the original Pb by a stylus pen to specify a required area, and when the surface of the original Pb is covered with a cover member 60, its projection part 60a depresses a microswitch 73 and a switching means 75 in a control part C receives signal from the switch 73 and drives the automatic original carrying device 59 and the copying device M. Then, the original is sent to the surface of a platen, exposed, and simultaneously with the end of copying, discharged. Since the original is automatically carried, the operation can be simplified and the working efficiency can be improved.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention (a) Industrial Application The present invention relates to an automatic document feeder, and more specifically, to a copying device, a recording device, etc. having an image area designation function. The present invention relates to an automatic document feeder used in an image forming apparatus and equipped with a digitizer (coordinate position detection bag@) for reading an area of a document image.

(b) Conventional technology In the past, in copying machines, originals were manually placed on the original platen, but many sheet originals were placed one by one on the original platen. Because it was inefficient to use the original document tray, automatic document feeders were installed that automatically fed sheet documents to the document table and automatically ejected them. Furthermore, the copying device has a multiple copying function that copies multiple originals on the same side of one transfer material, and uses a color (e.g. round red, blue, etc.) developer instead of the usual black developer. Some devices are designed to be multifunctional by having a multicolor copying function and an area designation function (or a coordinate position detector fM) to obtain a colored copy image. That is, the above area specification function Φ
This method extracts and copies only the image of the necessary area from one original image, and first the desired image area is
When the dimensions are measured and the values are input on the operation panel, the light emitting element array installed near the photoreceptor that forms the image emits light partially and in chronological order in response to the signal.
The electrostatic latent image in unnecessary areas on the photoreceptor is erased, thereby obtaining an image in the necessary area. Furthermore, there is a method of specifying an area using a digitizer (coordinate position detection value W). If you use this method, you can place a document on the digitizer and press the desired image area from above the document, and the area will be automatically specified. The area is detected and the above-mentioned measurement of the required area is not required.

Furthermore, by combining the multiple copying function, multicolor copying function, and area designation function described above, further multifunctionality can be achieved. In the case of multiple copying, each document had a different part of the image, and it was necessary to select the documents so that the duplicated images would not overlap, but with the addition of the area specification function, Image areas that cause overlap can be erased, eliminating the need to select documents. Therefore, by combining these three functions, multiplex and multicolor images can be obtained from any document. Of course, as described above, it is easy to erase unnecessary area images from a document and obtain necessary area images.

Hereinafter, a conventional copying apparatus having the above-mentioned area designation function and equipped with an automatic document feeder will be described.

As shown in FIG. 5, this copying apparatus has an automatic document feeder 2 on the top of the main body M of the apparatus, and also includes an area instruction value W3 configured separately from the main body M of the copying apparatus. The area indicating device 3 has a digitizer 6 installed on its digitizer installation stand 5, a stylus pen 7, and a document P on the digitizer 6.
is placed with its image surface facing upward, its right end in contact with a document abutment (not shown), and its back side in contact with an abutment (not shown). Next, use the stylus pen 7 to select the original F.
Il! A desired area on the image plane of P is pressed to designate and input the area. Note that various input methods and detection methods have been proposed, but will not be described in detail. When the desired area is input, a desired mode such as whether to display an image of the input desired area or specifying a color is selected using the function keys 9, and the digitizer 6 and the like are selected. A signal input using the function key 9 is transmitted to the copying apparatus main body M via a signal line 10. Next, the original IP placed on the digitizer 6 of the area specifying device 3 to specify and input the desired area is transferred to the automatic document feeder 2 disposed at the upper part of the main body M of the copying machine.
The original f#i is transferred onto the +-ray 11, and is moved over the document tray 11 with its image surface facing downward and with the right end in contact with the document abutment on the digitizer 6 as the top, and the document is automatically transferred to the document tray 11. The feed device 2 is pushed to a predetermined abutting position.

Then, the automatic document feeder 2 operates to feed the layer iP to the image forming section of the copying apparatus main body M, and the copying apparatus M performs a predetermined copying operation.

However, since the above-mentioned conventional copying apparatus M has a separate area indicating device 3, an extra installation space is required for the area indicating device 3. Furthermore, since the area indicating device 3 is configured as a separate body, the operator must perform many work steps. That is, there is a standard for the document to hit against the digitizer 6, and a standard for the document to hit for the automatic document feeder @2. The right end must be accurately brought into contact with the abutment reference of the automatic document feeder 2, and the image surface of the document P must be changed from upward to downward.
The operator has to move the document onto the document tray 11, which is troublesome for the operator. Moreover, especially when a mistake is made in specifying an area and the area is to be specified again, the work is doubled, which is extremely inconvenient.

Therefore, the present applicant has devised an automatic document feeder that integrates a digitizer.

An automatic document feeder devised by the applicant will be described below.

The automatic document feeder 20 devised by the applicant is as follows:
As shown in FIG. 4, a copying machine M having an area specification function
placed at the top of the Then, the automatic document feeder 20
has a full-surface belt 22 at approximately the center facing the platen glass 21 of the copying machine M, and is provided with an entrance tray 23 on the negative side for stacking sheet originals. A feed roller shaft 25 is provided near the tray 23, and a feed roller 26 is fixed to the shaft 25 and rotates integrally with the feed roller shaft 25. Further, a paper feed arm 27 is rotatably supported at one end of the feed roller shaft 25, and a pickup roller 29 is rotatably supported at the other end of the paper feed arm 27. The pickup roller 29 swings up and down integrally with the paper feed arm 27 with the feed roller shaft 25 as a fulcrum. The rotation of the feed roller 26 is transmitted to the pickup roller 29 via a gear (not shown), and the feed roller 26 and the pickup roller 29 are configured so that their rotational direction and peripheral speed are the same.

Further, a front paper feed roller 30 is rotatably provided facing the pickup roller 29, and a rear paper feed roller 31 is rotatably provided facing the feed roller 26.

Further, a pickup arm 33 having one end fixed to a pickup arm shaft 32 is provided near the paper feed arm 27, and a slide WII 33a is formed at the other end of the pickup arm 33. The pin 2 protruding from the paper feed arm 27 in the slide groove 33a? a is fitted, and when the pickup arm shaft 32 rotates, the pickup arm 33 swings, and as the arm 33 swings, the roller 29 swings up and down and comes into pressure contact with the front paper feed roller 30, or Separate. Then, when the roller 29 comes into pressure contact with the front paper feeding roller 30, the sheet document held between these rollers 29 and 30 is fed. Further, near the pickup roller 29, a document presence/absence sensor S1, which is a reflective sensor, is provided. On the other hand, drive rollers 35 are provided above both ends of the platen glass 21, respectively.
and turn rollers 36 are disposed, and the entire surface of the belt 22 is wound around both rollers 35, 36. Further, the turn roller 36 is capable of moving left and right, and is biased to the left when the full-surface belt 22 is wrapped around it, so that the full-surface belt 22 has sufficient tension and is driven. It is configured to prevent slipping between the roller 35 and the roller 35. Further, presser rollers 37 a, 37 b, 37 c are provided inside the full-surface belt 22, and these pressers: + rollers 37 a, 37 b, 37
c are arranged at a pitch somewhat narrower than the size of the sheet document to be fed, and furthermore, these press round rollers 3
7a, 37b, and 37c press the full-surface belt 22 against the platen glass 21 with a weak pressure to increase the sheet document conveyance force of the full-surface belt 22.

Further, a pair of lower discharge rollers 39 and a pair of upper discharge rollers 40 are located near the turn roller 36 around which the entire belt 22 is wound.
A discharge detection sensor S2 is disposed close to the pair of lower discharge rollers 39, and detects discharge of the sheet original, and also detects that the output original f station is not detected even after a predetermined period of time has elapsed. and lights up the jam lamp. Further, a curved discharge document guide pair 41 is provided between the upper and lower discharge roller pairs 39 and 40, and guides the discharge sheet document from the lower discharge roller pair 39 to the upper discharge roller pair 40. Furthermore, a digitizer 42 is provided above the entire belt 22.
is arranged, and the digitizer 42 inputs an instruction using a stylus pen or the like to specify the area of the sheet document placed with the image surface facing upward as described above. Further, a document abutting reference 43 is fixedly provided near one end of the digitizer 42 facing the drive roller 35, so that when the sheet document is placed on the digitizer 42, the right end of the sheet document is The sheet original is positioned by abutting against an abutment reference 43, and by abutting an abutment (not shown) with the back side of the sheet document. Further, a pair of carry-in sheet guides 45 is provided from the document abutting reference 43 to the platen 21, and furthermore, a pair of carry-in rollers 46 is disposed midway through the pair of extra sheet guides 45, and a pair of carry-in sheet guides 46 are provided in the middle of the pair of extra sheet guides 45. A document carrying path 47 is formed by the pair 45 . An original Tokyo University sensor S3 is arranged facing upstream of the original g4 carrying path 47, and a leading edge detection sensor S4 is further arranged facing the lower end of the stirred sheet guide pair 45.

Further, at the same time as this application, the applicant installed a cover member 60 rotatably across both ends of the digitizer 42 via a hinge 61, and also installed the cover member 60 at the other end above the digitizer 42, that is, above the drive roller 35. filed an application for an automatic document feeder equipped with a feed regulating section 63. A document abutting member 65 is rotatably installed on the regulating portion 63 about a support shaft 66, and a regulating plate 65a is provided on one side of the abutting member 65 extending in the rearward direction. A feed roller 67 is rotatably installed at one end of the contact member 65, and a portion of the feed roller 67 slightly closer to the support shaft 66 is biased by a spring 69. Further, the end opposite to the feed roller 67 is supported by a plunger 70a of a solenoid 70, so that when the solenoid 70 is not energized, the abutment member 65 moves around the support shaft 66 as shown in FIG. The feed roller 67 is rotated clockwise and lifted upward. In this state, the lower end of the regulating plate 65a is configured to be in a position to regulate one end of the sheet original pb placed on the digitizer 42.

Note that what is indicated by the reference numeral 49 below the platen glass 21 is an optical system of the copying apparatus M.

When simply copying using a sheet original Pa, the sheet original Pa is first placed on the entrance tray 23 with the image side facing down, and the sheet original Pa is transferred between the pickup roller 29 and the front paper feed roller. Insert between 30 and 30 minutes. Then,
The document presence sensor S senses the sheet document Pa, and after a certain period of time, the pickup roller 29 descends, and the pickup roller 29 and the front paper feed roller 30 pick up the sheet document P.
a (the pickup roller 29 is lifted upward when there is no sheet document).

At the same time, the drive roller 35 rotates, and the entire surface belt 22
rotates. Then, the pickup roller 29 rotates and starts feeding the original sheet 94Pa. Then, when the leading edge of the sheet original [Pa passes between the feed roller 26 and the rear paper feed roller 31, which rotate at the same time as the pickup roller 29, and reaches the leading edge detection sensor S4, the leading edge detection sensor S4 detects the sheet original g! The leading edge of the iPa is detected, and from this time a photo interrupter (not shown) starts timing the conveyance of the sheet document Pa. Next, the original sheet 11Pa enters between the entire surface belt 22 and the platen glass 21, and when its tip comes under the first presser roller 37a, the conveying force of the entire surface belt 22 increases, and the original sheet fiPa is transferred to the entire surface belt 22. The speed is the same as the circumferential speed of 22,
The peripheral speed of the feed roller 26 is higher than that of the feed roller 26, and the feed roller 2
6 is accompanied by the sheet document Pa. Then, when the trailing edge of the sheet original Pa is detected by the leading edge detection sensor S4, the rotation of the feed roller 26 and the pickup roller 29 is stopped, and the next sheet original is not fed. Then, at a predetermined timing determined by the photo ink printer, the full-surface belt 22 is stopped, and the sheet material f14 P a conveyed by the full-surface belt 22 is placed at a predetermined position on the platen glass 21. Ru. Immediately, copying machine M
The exposure operation is started. Then, in response to the copy end signal from the copying device M, the full-page bell) 22 starts rotating, and conveyance of the sheet original lI4Pa is started, and the sheet original Pa
is held by a pair of lower discharge rollers 39 and guided to a pair of discharge document guides 41, and further held by a pair of upper discharge rollers 40 and discharged. After the original sheet fiPa is discharged, the full-surface belt 22 stops rotating. Note that when the document presence/absence sensor Sl is sensing the next sheet document, the discharge detection sensor S2 starts feeding the next sheet document after detecting the leading edge of the document Pa.

Next, sheet hara 8! When specifying an area using lPb, first rotate the cover member 60 to separate it from the digitizer 42, and then place it on the digitizer 42!・Place the original [Pb with the image side up and place its right end on the regulating plate 6 of the abutting member 65.
5a, and the back side of the rate original g4Pb is placed in contact with an abutment (not shown). Then, a desired area on the document screen is input using a stylus pen or the like. After the input is completed, mode settings are made, such as displaying the image of the area specified by the function key. and,
The cover member 60 is rotated over the digitizer 42 to cover the digitizer 42, and a function key or an operation switch of the copying machine M is operated. Then, the solenoid 70 starts to be energized, the plunger 70a pulls the contact member 65, and the member 65 rotates about the support shaft 66 against the biasing force of the spring 69. At this time, the regulating plate 6 of the member 65
571 is retracted to the position shown by the two-dot chain line, and this causes the feed roller 67 to move the sheet document p on the digitizer 42.
abuts one end on b. Then, after a certain period of time has elapsed after this operation, the drive roller 35 is driven and the full-surface belt 22 is rotated. After that, the pair of carry-in rollers 46 rotates, and the original sheet of ¥14Pb is carried in! - Guided by the pair of guides 45 and transported toward the platen glass 21. Then, the sheet material WsPb detects the leading edge of the sheet by the leading edge detection sensor S.
When detected by 4, Photo Ink Lapuku will display the corresponding sea!・Hara g
Start measuring the timing of transporting 4Pb. Therefore, the sheet original pb is transferred between the entire surface belt 22 and the platen glass 21.
and is conveyed by the entire surface belt 22,
It is stopped and loaded at a predetermined position on the platen glass 21 at a predetermined timing. Note that when the rear end of the sheet original Pb is detected by the leading edge detection sensor S4, the pair of carry-in rollers 46 stops rotating. Then, a copy start signal is sent to the main body of the copying apparatus M, and the exposure operation is started. and,
In response to the copy end signal from the main body of the copying machine M, the entire belt
2 starts rotating, and the original sheet 'g4Pb is discharged onto the cover member 60 as described above.

(C) Problems to be Solved by the Invention However, the automatic document feeder and device move the cover member 60 onto the digitizer 42 each time after specifying and inputting the area of the sheet document placed on the digitizer 42. The operation of opening and closing the cover member 60 described above becomes a very troublesome operation when there are many sheet originals that need to be copied. There is a possibility that inconveniences such as extra time may occur.

(b) Means for solving the problem The present invention aims to solve the above-mentioned problems, and includes installing a protective member detecting means for detecting the moving operation of the protective member, and the detecting means A switching means is arranged to switch the automatic document feeder and the image forming device into operation and inactivation based on a signal from the automatic document feeder and the image forming device. When the device is switched to non-operation and the protection member is moved to a position covering the coordinate position detection device, the automatic document feeder and the image forming device are configured to operate in conjunction with the movement operation. It is characterized by:

(e) Operation Based on the above configuration, when performing image forming work by specifying a region using a coordinate position detection device, first the protective member is separated from the coordinate position detection device, and then a sheet original is placed on the detection device. do. Then, when the operator specifies and inputs a desired area and further moves the protective member to a position covering the coordinate position detection device, the protective member detecting means is activated by this movement, and a signal is thereby output from the detecting means. Emitted. Then, the switching means operates the automatic document feeder and the image forming apparatus based on the signal from the detection means.

(F) Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the same parts as those of the automatic document feeder 20 described above are denoted by the same reference numerals, and a description thereof will be omitted.

As shown in FIG. 1, the automatic document feeder 59 is placed on and integrated with the main body M of the copying machine, and furthermore, a digitizer 42 is disposed in the center of the upper surface of the automatic document feeder 59. In the back direction, there is a cover member 6 across both ends.
0 is installed rotatably around a hinge 61. Further, an entrance tray 23 is installed on the upstream side of the conveyance side of the automatic document feeder 59, and a feed regulating section 63 is further placed facing the tray 23.

As shown in FIGS. 2(al) and 2(bl), a protrusion 60a is formed in the vicinity of the rotating base of the cover member 60, and furthermore, a sending device 5 at both ends of the digitizer is formed.
A hole 72 is bored in the upper surface of the cover 9, and the hole 72 is configured so that the protrusion 60a of the cover member 60 is pushed into the hole 72 when the cover member 60 is rotated onto the digitizer. ing. Further, a micro switch 73 is installed below the hole 72, and an arm portion 73 of the switch 73 is installed.
A is configured such that when the cover member 60 is rotated over the digitizer 42 and the protrusion 60a is inserted through the hole 72, the tip of the protrusion 60a is pressed and turned on. . Further, as shown in FIG. 1, a switching means 75 is installed in the control section C, and when the cover member 60 is rotated and the micro switch 73 is turned on, the switching means 75 is turned on. The drive roller 35 of the automatic document feeder 59, the document feed roller 46, the feed roller 67, and other conveyance means are operated based on the signal emitted from the document feeder 59, and at the same time, the copying device M is operated to perform a copy operation based on the area specified by the digitizer 42. is configured to do so.

Since the present embodiment has the above-described configuration, when specifying and inputting an area using the digitizer 42 and performing copying work, the operator first rotates the cover member 60 to separate it from the digitizer 42. do. Then, a sheet original Pb for which an area is to be designated is placed on the digitizer 42, and the input surface of the digitizer 42 is pressed from above the original T14Pb using a stylus pen or the like to designate a desired area. Then, use the funk thin key to select a mode such as whether or not to display an image of the input desired area, and further rotate the cover member 60 to a position covering the digitizer 46. The protrusion 60a is pushed through the hole 72 and presses the arm 73a of the microswitch 73, thereby turning on the microswitch 73. Then, the switch 73
When the detection signal is sent to the switching means 75 of the control section C, the switching means 75 operates the automatic document feeder fi 59 and the copying machine M based on the detection signal. Therefore,
A feed roller 67, a pair of original rollers 46, a drive roller 35, and a full-surface belt 22 that operate in conjunction with the closing operation of the cover member 60 of the note source 1111Pb on the digitizer 42
etc., and placed on the platen glass 21, and further exposed by the main body M of the copying apparatus. Then, in response to a copy end signal from the apparatus main body M, the entire surface belt 22 starts rotating, and the sheet original Pb is thereby discharged onto the cover member 60 covering the digitizer 42.

In this embodiment, the automatic document feeder 59 is turned on by closing the cover member 60 installed in the automatic document feeder 59 so as to be openable and closable.
As shown in FIGS. 3A and 3B, the input surface of the digitizer 42 is pressed by a protrusion 60a formed on the cover member 60. , furthermore, the switching means 75 based on the input signal.
The automatic document feeder 59 and the copying machine M may be configured to operate according to the above-mentioned microswitch 73, and may be used as a simpler detection means than the microswitch 73.

(G) As described in detail, according to the present invention, the protection member is moved to a position covering the coordinate position detection device by the operation of the switching means based on the detection signal of the movement movement of the protection member by the protection member detection means. Since the automatic document feeder and image forming device are configured to operate in conjunction with the operation of The image forming operation can be easily performed by simply moving the image forming apparatus onto the detection device, and by doing so, the area can be designated for each sheet of original, the maintenance tube member can be moved, and the operation switch can be operated. This eliminates the need for the troublesome work of performing image forming work using the image forming apparatus, so that the operator can proceed with the work efficiently and shorten the work time.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an automatic document feeder according to the present invention;
Figure 2 (fat) is a side view showing its main parts, Figure 2 (bl is a sectional view showing its operating state, Figure 3 (a) is a side view showing another embodiment, Figure 3 (bl is its FIG. 4 is a side view showing the operating state, and FIG. 4 is a cross-sectional view showing the automatic document feeder devised according to the present application. FIG. 5 is a perspective view showing the conventional automatic document feeder and coordinate position detection device. Fig. 42: Coordinate position detection device (digitizer) 59: Automatic document feeder, 60: Protective member (cover member),
73 ・Protective member detection means (micro switch),
75...Switching means, M...Image forming device (copying device).

Claims (1)

[Claims] (1) A coordinate position detection device that specifies an area during image formation is provided, and a protective member that protects the detection device and serves as a document storage stand is placed at a position covering the detection device and at a position away from the detection device. An automatic document feeder is installed in an image forming apparatus so as to be moved in a direction, and is further mounted on an image forming apparatus, further comprising a protection member detection means for detecting movement of the protection member, and a protection member detection means for detecting movement of the protection member; A switching means for switching the automatic document feeder and the image forming apparatus into operation and inactivation based on a signal is disposed, and when the protection member is separated from the coordinate position detection device, the automatic document feeder and the image forming apparatus an automatic document feeder configured to operate the automatic document feeder and the image forming device when the protection member is moved to a position covering the coordinate position detection device.