JPH0389234A - Method for setting document in carrier sheet and image forming device used for the same - Google Patents

Abstract

PURPOSE:To eliminate the need for a wide space for document setting by a carrier sheet which has a through hole on its carrying directional head part side as a carrier sheet for protecting a document and turning on/off two switches with the carrier sheet and document. CONSTITUTION:The carrier sheet which has the through hole 31 on the side of its carrying directional head part 28A is used as the carrier sheet 28 for protecting the document, only the carrier sheet 28 is supplied to a document feeder 21 to turn on a 1st switch SW1 with the carrier sheet, and consequently the carrier sheet 28 is moved forth by a specific distance through the conveying means of the document feeder 21 to position the 1st switch SW1 at the through- hole 3with a 2nd switch SW2. In this state, the 1st switch SW1 is turned off and the carrier sheet 28 is clamped by a carrying means and stopped. At this time, the document G is set in the carrier sheet 28 and the 1st switch SW1 is turned on again with the document, so the document G is carried in a document read direction while supported therebetween with the carrier sheet 28.

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention relates to a method of setting a document onto a carrier sheet and an image forming apparatus used in the method.

[Conventional technology]

2. Description of the Related Art One type of copying machine is a moving original copying machine that moves an original during reading (exposure) of the original. This document moving type copying machine operates in a normal copy mode, in which the document is fed from the document insertion section of the document feeder, exposed to a predetermined amount, and makes a single copy, and in the same way, the document is exposed to light. A copy mode for creating a large number of small copies (hereinafter referred to as multi-copy mode) can be set as an alternative. In the multi-copy mode described above, if a carrier sheet is used to protect the document from damage and copies are made with the document stored in the carrier sheet, the document is set on the carrier sheet and placed in the specified position. Conventionally, this has been done on a table that allows the carrier sheet to be sufficiently spread out. [Problem to be Solved by the Invention] However, according to the above-described document setting method, as the size of the document increases, a correspondingly larger carrier sheet is required, and therefore, the large carrier sheet cannot be sufficiently expanded. Undesirable problems arise, such as the need to prepare a large table and a large space. The present invention has been made with the above-mentioned considerations in mind, and an object of the present invention is to provide a method for easily setting a document on a carrier sheet even without a large table or a large space, and a method thereof. An object of the present invention is to provide an image forming apparatus for use in the present invention. [Means for Solving the Problems] In order to achieve the above-mentioned object, a method for setting an original on a carrier sheet according to the present invention includes a method for setting an original on a carrier sheet, which includes:
It includes a document reading section and a document conveyance device having a conveying means that rotates in both forward and reverse directions to convey the document and a carrier sheet toward the document reading section, and the document conveying device rotates in both forward and reverse directions to convey the document and the carrier sheet toward the document reading section. In an image forming apparatus capable of reading a document, a carrier sheet having a through hole formed on the leading end side in the conveyance direction is used as the carrier sheet, and the carrier sheet is fed in an empty state from a document insertion section of the document conveyance device. Then, by turning on a first switch in which the leading end of the carrier sheet is provided upstream of the document reading section, the conveying means is rotated in the normal direction to advance the carrier sheet by a predetermined distance; When the leading end of the carrier sheet turns on a second switch provided between the first switch and the document reading section to stop the conveying means, the carrier sheet When the document is stopped and held by the conveyance means, the document is inserted from the rear end side of the carrier sheet and is held in a predetermined state by the carrier sheet to set the document. By turning on the switch again, the conveying means is rotated in the normal direction again to convey the document together with the carrier sheet toward the reading section. Further, the image forming apparatus according to the present invention includes, on the upper part of the image forming apparatus main body, a document reading section and a conveying means that rotates in either forward or reverse directions for conveying the document and the carrier sheet toward the document reading section. and a document conveyance device having
In an image forming apparatus capable of reading a document while the document is held between carrier sheets, the carrier sheet is formed with a through hole on the leading end side in the conveyance direction, and the document conveyance device The first switch is turned on by the leading end of an empty carrier sheet supplied from the document insertion section, and is also turned on by the document when the document is set in the carrier sheet that is being held between the conveying means. and a second switch that is turned on by the leading end of the carrier sheet to stop the forward rotation of the conveying means are provided in this order on the upstream side of the reading section, and a document is read using the carrier sheet. When reading, the conveyance means is rotated forward or stopped only by on/off control of both the switches. [Operation] In the present invention, by skillfully turning on and off two switches using the carrier sheet and the original,
The document conveying device is operated to convey the carrier sheet and the document toward the document reading section. That is, a carrier sheet with a through hole formed on the leading end side in the conveying direction is used as a carrier sheet to protect the document, only the carrier sheet is supplied to the document conveying device, and the first switch is turned on by this carrier sheet. As a result, the carrier sheet is advanced by a predetermined distance by the conveying means of the document conveying device, and the first switch is positioned in the through hole. In this state, the first switch is turned off, and the carrier sheet is held and stopped by the conveyance means. At this time, place the original in the carrier sheet, and use this original to
Since the first switch is turned on again, the document is conveyed toward the document reading section while being held between the carrier sheets. According to the present invention, since the original is set in the carrier sheet while being conveyed to the reading section, the original can be easily set even if there is not a large space. [Example] Hereinafter, an example of the present invention will be described based on the drawings. 1 to 3 show a document moving type copying machine as an example of an image forming apparatus to which the present invention is applied. First, in FIG. 1, reference numeral 1 denotes the copying machine main body, which is placed on the upper surface of a deck 2 which also serves as a copying machine mounting stand. Inside the copying machine main body 1, a photoreceptor 3 is installed horizontally so as to rotate in the direction of arrow R.A charging device 4 is installed around the photoreceptor 3.
．． Developing device5. Transfer device6. Paper separation device7. Cleaning devices 8 and the like are arranged in a predetermined order. and,
A paper feed section 10 into which a paper feed cassette 9 containing copy paper can be removably loaded is formed below the copying machine main body 1. A paper feed path 1 from this paper feed section 10 to the transfer device 6 is formed.
1 has a paper feed roller 12. Registration rollers 13°, conveyance rollers 14, etc. are provided. Further, a paper transport path 15 is provided on the downstream side of the paper separation device 7 in the transport direction. Fixing device 16. A paper discharge roller 17 is provided. Reference numeral 18 denotes a paper ejection unit that ejects the paper after fixing. Further, reference numeral 19 is a paper discharge tray for receiving paper discharged from the paper discharge section 18. On the top surface of the copying machine main body 1, there is a document reading section (document exposure section) 20, and a document transport device 2 that conveys a document and a carrier sheet, which will be described later, toward the document reading section 20.
1 is the pretense. That is, 22 is a contact glass provided on the top surface of the copying machine main body 1, and below it is provided an exposure device 23 consisting of a light source and a convergent light transmitting body such as a SELFOC lens (trade name). , constitutes the document reading section 20. Further, the document conveyance device 21 is provided substantially above the document reading section 20, and includes document feed rollers 24, 25, document pressing rollers 26, etc. as conveyance means. The document feed rollers 24 and 25 are rotationally driven by a motor (not shown), and rotate normally so as to convey the document or carrier sheet supplied from the document insertion section 27 of the document transport device ff21 toward the document reading section 20. Or, reverse the transport so that it is transported in the opposite direction to the above direction. Note that the configuration up to this point is no different from conventional copying machines of this type. As shown in FIGS. 2 and 3, on the top surface of the copying machine main body 1, a document insertion section 27 and a document feed roller 24 are provided.
A document detection switch (hereinafter referred to as the first switch) SW located between the document reading section 20 and a leading edge timing switch (hereinafter referred to as the second switch) SW located on the upstream side of the document reading section 20. It is a provision. The first switch SW1 and the second switch SW8 have a separation distance in a direction perpendicular to the conveyance direction that is smaller than the width dimension of a through hole 31 provided through the carrier sheet 28, which will be described later. It is provided so as to be included within the passage area of the hole 31. Then, the first switch SW1 detects the insertion of the document G and rotates the document feed rollers 24 and 25. And the second
The switch SWt is used to synchronize the original insertion timing and the copy paper feeding timing in relation to the paper detector provided in the paper feeding unit 10. The document feed rollers 24 and 25 are controlled by detecting the movement of the document. Therefore, in normal copy mode, the original is transferred to the second switch SW.
After the document reading unit 20 is temporarily stopped by t, the document reading unit 2 is rotated forward by the document feed rollers 24 and 25.
Further, in the multi-copy mode, the original after reading the original is reversely conveyed to the original insertion section 27 by the reverse rotation of the original feed rollers 24 and 25. Figures 2 and 3rJ! In J, 28 is a carrier sheet, which includes a transparent lower sheet member 29 that contacts and holds the surface to be read (the lower surface in the illustrated example) of the document G, and an upper portion that contacts and covers the opposite surface of the document G. A sheet member (this sheet member does not necessarily have to be transparent) 30 is joined at the leading end in the transport direction, and the rear end in the transport direction can be opened and closed, and the sheet member 30 is connected in the width direction slightly behind the leading end 28A. A rectangular through hole 31 having a width direction length 11 of about 30 to 60 meters, for example, and a direction length h of about 10 inches and 15 meters, is provided through the center (direction perpendicular to the direction of travel). Reference numeral 32 denotes a connecting part. In addition, 33 is an operation/display part provided on the top surface of the copying machine main body 1, in which a continuous copy key 34 for setting a multi-copy mode is provided, along with various functions such as a numeric keypad and a copy key. Next, the operation of the moving document copying machine having the above configuration will be explained with reference to the flow chart shown in FIG. 4 and the operation diagram shown in FIG. 5. For example, if the document G is relatively large in size, If it is difficult to set this on the carrier sheet 28 in advance and a large space is required, first turn on the continuous copy key 34 (step St) to set the multi-copy mode, and then the continuous copy flag is turned on. (Step S2). Here, the empty carrier sheet 28 is fed from the original insertion section 27 of the original transport device 21, and this is pushed in the direction shown by the arrow X in FIG. 5(A). , the tip end 28A of the carrier sheet 28 comes into contact with the actuator of the first switch SWl and turns it on (step S3). When the first switch SW is turned on, a motor (not shown) rotates in a predetermined direction. (Step S4), the document feeding roller 24 rotates normally in the direction of the arrow in FIG.
is bitten by the document feed roller 24 by a predetermined length, but as the actuator of the first switch sw1 protrudes upward into the through hole 31 formed in the carrier sheet 28, as shown in FIG. Then, the first switch sw is temporarily turned off (step s5), and the carrier sheet flag is turned on (step s6). On the other hand, at this time, the motor is still rotating in the predetermined direction, so the carrier sheet 28 moves further forward, as shown in FIG.
As shown in , the tip 28A of the second switch SW
Step S7) causes the motor to come into contact with the second actuator and turn it on (Step S7), thereby stopping the motor.
8), the carrier sheet 28 temporarily stops with its leading end 28A gripped by the document feeding roller 24 (see FIG.
C), and here, as already explained, since the carrier sheet flag is on (step 39), as shown in FIG. Lift the sheet member 30 upward to open the rear end of the carrier sheet 28, insert the document G into the carrier sheet 28 from the rear end, and hold the document G between the carrier sheets 28 in a predetermined state. (step 510). When setting the document, the document G is placed in the first switch S that protrudes upward in the through hole 31 of the carrier sheet 28.
In contact with the actuator of W1, the first switch S
Since W + is turned on again (see (D) in the same figure, (step 5it)), the motor rotates in the predetermined direction again (step 512), and the document feed roller 24 rotates in the normal direction again, thereby transporting the document G. The sandwiched carrier sheet 28 moves further forward. Due to this forward movement, the leading edge of the document G located in the through hole 31 of the carrier sheet 28 is moved to the second switch S.
The motor comes into contact with the actuator of Wt to turn it on (step 513), and the motor rotates for a predetermined time and then stops (step 514), but at this time, the original G has arrived at the original reading section 20. Here, predetermined copying starts in synchronization with the copy paper side, and if the continuous copy flag is on, continuous copying is performed (step 515). On the other hand, if the document G is not so large that it is not difficult to set it on the carrier sheet 28 in advance and does not require a large space, the carrier sheet 28 with the document G set in a predetermined state may be used. Original transport device 2
It is sufficient to supply the document from the document insertion section 27 of No. 1 and push it in. Then, after the first switch SW1 is turned on (step 33) and the motor is turned on (step 34), the first switch SW1 is continuously turned on (step 516).
Then, when the motor stops (step S7), the original G arrives at the original reading unit 20, but at this time, the carrier sheet flag is off (step 517), so the process goes to step S15, and copying is performed in the same way as above. will be held. Furthermore, when performing normal copying, press the continuous copy key 3.
4 (step 51B) and without setting the multi-copy mode, it is sufficient to feed only the original G from the original insertion section 27 of the original transport device 21. It should be noted that the present invention can be applied not only to the above-mentioned document moving copying machine but also to image forming apparatuses such as facsimile machines. [Effects of the Invention] As explained above, according to the present invention, a carrier sheet with a through hole formed on the leading end side in the conveyance direction is used as a carrier sheet for protecting a document, and the carrier sheet and the document can be used to protect the document. By skillfully turning on and off two switches, documents can be set in the carrier sheet while the carrier sheet is being transported to the reading section. Therefore, even if there is not a large space, originals can be easily set.

[Brief explanation of drawings]

1 to 5 show an embodiment of the present invention, in which FIG. 1 is a vertical cross-sectional view of a moving document copying machine as an example of an image forming apparatus according to the present invention, and FIG. 2 is a perspective view thereof; Figure 3 is an enlarged perspective view of the main parts, Figure 4 is a flowchart, Figure 5 (A), (
B), (C), and (D) are operation explanatory diagrams. ■...Image forming apparatus main body, copying machine main body>, 20...
Original reading unit, 21... Original transport device, 24.25
... Conveyance means (document feed roller), 27 ... Document insertion section, 28 ... Carrier sheet, 28A ... Tip part, 31 ... Through hole, SWI ... First switch, SW
8...Second switch. Applicant: Sanda Kogyo Co., Ltd. Representative: Patent Attorney: Hideo Fujimoto 1... Image forming device body (?! Manuscript body 20...
Original reading section 21...Original transport device 4 25...Transporting means (original feeding roller) Fig. 1 Fig. 4

Claims (2)

[Claims] (1) At the top of the image forming apparatus main body, there is a document reading section,
A document conveying device having a conveying means that rotates in both forward and reverse directions to convey the document and the carrier sheet toward the document reading section, and the document can be read while the document is held by the carrier sheet. In the image forming apparatus, a carrier sheet having a through hole formed on the leading end side in the conveyance direction is used as the carrier sheet, the carrier sheet is fed in an empty state from the document insertion section of the document conveyance device, and the carrier sheet is The leading end of the carrier sheet is rotated forward by a predetermined distance by turning on a first switch provided on the upstream side of the document reading unit to rotate the conveying means in the normal direction. The unit turns on a second switch provided between the first switch and the document reading unit to stop the conveyance means, so that the carrier sheet is held at its leading end by the conveyance means. When the original is loaded and stopped, the original is inserted from the rear end side of the carrier sheet and held in a predetermined state by the carrier sheet to set the original, and at this time, the first switch is turned on again depending on the original. A method for setting an original on a carrier sheet, characterized in that the transport means is rotated normally again to transport the original together with the carrier sheet toward the reading section. (2) At the top of the image forming apparatus main body, there is a document reading section,
A document conveying device having a conveying means that rotates in both forward and reverse directions for conveying the document and the carrier sheet toward the document reading section, and is capable of reading the document with the document sandwiched between the carrier sheets. In the image forming apparatus, the carrier sheet is formed with a through hole on the leading end side in the transport direction, and the leading end of the empty carrier sheet supplied from the document insertion section of the document conveying device is turned on. and a first switch that is turned on by the original when a document is set in the carrier sheet held by the carrier sheet; A second switch for stopping forward rotation of the switch is provided in this order on the upstream side of the reading unit, and when reading a document using the carrier sheet, the conveying means is controlled only by on/off control of both the switches. An image forming apparatus characterized in that it rotates normally or stops.