JP2846916B2 - Reservation type document feeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a reservation type original for conveying and stacking a sheet material at a predetermined position such as an image reading unit in an image forming apparatus such as a copying machine and a laser beam printer. It relates to a transport device.

(B) Prior Art Conventionally, as an example of a reservation type original conveying apparatus, there is an apparatus described in Japanese Patent Application No. 63-306250 which has already been proposed by the present applicant. The outline of this apparatus will be described with reference to FIG. I do. In FIG. 1, the reservation type document feeder comprises a reservation document setting section A and a circulating type automatic document feeder B.
Circulating automatic document feeder first sheet material S ₁ stacked on the first tray 71 for B are those of the bottom by the separating portion 75 comprising a pair of belts 72, 73 respectively rotate in the direction of the arrow And is conveyed to a predetermined position on a platen glass (image reading unit) 79 by a full-surface belt 77 rotating in the direction of arrow 76 via a sheet path (f).

First sheet material S ₁ after the image read on the platen glass 79, for example, if the transport direction length is the same sheet material, the third by the whole surface belt 77 and the discharge roller 78 rotates in the arrow 76 direction The sheet is discharged onto the stacking tray 80. Further, in the case of sheet materials having different lengths, the first sheet material S ₁ , the sheet path (Y), and the large roller 83 on which the backup roller pair 82 is in contact with the entire belt 77 rotating in the direction of arrow 81. The sheet is discharged onto the first sheet stacking table 71 by a discharge roller 86 via a deflection guide 85 and a sheet path (ta).

After first first on sheet stacking plate 71 sheet S ₁ image reading processing is finished, if you want to continue to serve the image reading of the other second sheet material, the second The sheet material is set on the second sheet stacking tray 89 of the reserved document setting section A in advance, and the image reading is reserved.

The second sheet material S ₂ of the second sheet stacking tray (reserved tray) 89, the separator unit 92 consisting of the separation belts 90 and 91 to rotate in the arrow direction in contact with each other from those of the bottom 1
Separated one by one, the transport roller 93 and the platen glass 79
To the first sheet stacking tray 71 as described later. Reference numerals 95 and 96 indicate the second original S
_This sensor detects the presence or absence of ₂ .

That is, the second sheet stacking tray 89 of the book document setting unit A, circulating a second conveying of the sheet material S ₂ to automatic document feeder first sheet stacking tray 71 B is shown in Figure 6 So, sheet pass (a) → (b) → (f) →
(Yo) → (LES) → (mosquito) → (vi) → (Yo) → second sheet material S ₂ through the (data) is discharged onto the first sheet stacking tray 71 is inverted once You.

(C) Problems to be Solved by the Invention However, in the above-mentioned conventional reservation type document feeder, the sheet path from the second sheet stacking tray 89 to the first sheet stacking tray 71 is very long. first sheet stacking tray 71 of the second sheet material S ₂ on the second sheet stacking tray 89 circulating automatic document feeder B
There was a drawback that it took time to transfer to the upper side.

Further, there is a problem that the reliability of sheet feeding is reduced due to, for example, skewing of the sheet material due to the long sheet path.

Therefore, the present invention provides a reservation type which can transfer a second sheet material to a first sheet stacking tray (first sheet stacking table) of a circulating automatic document feeder with a short sheet path without reversing. It is an object of the present invention to provide a document feeder.

(D) Means for Solving the Problems The present invention provides a first sheet material loading table and a first sheet material separating means for sequentially feeding out the sheet materials loaded on the first sheet material loading table one by one. A first sheet feeding path for guiding the sheet material separated by the first sheet material separating means to an image processing unit; and a first sheet feeding path opposite to the first sheet feeding path across the image processing unit. There is a first sheet discharge path for guiding the sheet material discharged from the image processing unit to the first sheet material mounting table, and a sheet material discharged from the image processing unit to another stacking unit. A second sheet discharge path, control means for selecting the first or second sheet discharge path, a second sheet material loading table, and a sheet material loaded on the second sheet material loading table. A second sheet material separating unit that sequentially feeds out one sheet at a time, and separated by the second sheet material separating unit. And a second sheet feeding path that joins the first sheet discharging path to guide the sheet material to the first sheet material mounting table.

(E) Operation Based on the above configuration, after the sheet materials stacked on the first sheet material stacking table are sequentially fed out one by one by the first sheet material separating means, image processing is performed by the first sheet feeding path. Lead to the department. The control means guides the sheet material, which is located on the opposite side of the first sheet feeding path across the image processing unit and is discharged from the image processing unit, to the first sheet material loading table.
And a second sheet discharge path for guiding the sheet material discharged from the image processing unit to another stacking unit,
The sheet material discharged from the image processing unit is guided to a first sheet material stacking table or another stacking unit.

Further, the sheet materials stacked on the second sheet material stacking table are sequentially fed out one by one by the second sheet material separating means, and then the first sheet material is fed to the first sheet discharge path by the second sheet feeding path. To the sheet material loading table.

(F) Example Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a longitudinal sectional side view of a reservation type document feeder according to the present invention. The reservation type document feeder includes a reservation document setting section A and a circulating type automatic document feeder B, and is disposed on the image processing main body C.

 First, the reserved document setting section A will be described.

Book document setting unit A includes a second original second stacking tray (second sheet) populations S ₂ is loaded (the second sheet material stacking base). Downstream of the second stacking tray 2, a separation unit 7 including a separation belt 5 and a separation roller 6 that abut against each other and rotate in a direction indicated by an arrow while being in contact with a feed roller 3 that conveys the second document S ₂ from below. (second sheet material separating means) have been provided respectively to the second original S ₂ of the second on tray 2 and feeding separated one by one from below.

As shown in FIG. 2, a sheet path (a) and a sheet path (second conveying path) (b) are provided on the downstream side of the separation unit 7, and the paths (a) and (b) are provided. Second in
A pair of registration rollers 9 are provided for conveying the document S _2. On the upstream side of the registration roller pair 9, there is provided a deflection guide 10 for branching the document conveyed from the automatic circulating document feeder (hereinafter referred to as RDF section) B to the above-mentioned path (a) and guiding the sheet path (d). A discharge roller 13 is provided downstream of the path (d). Paper feed roller 3
A transmission type sensor 11 for detecting the presence or absence of a document is provided between the separation unit 7 and the transmission type sensor 12 provided on the downstream side of the separation unit 7. And paper jams are detected.

The configuration of the RDF unit B is the same as the configuration described in Japanese Patent Application No. 1-28741 by the applicant of the present invention, so that the detailed description thereof will be omitted and a brief description will be given.

1 and 2, an RDF section B is a first loading tray 1 on which a _first sheet material (first document S ₁ ) is loaded.
(First sheet material loading means), and the first loading tray 1 can be moved between a solid line position and a chain line position 1A. It is always dashed line position 1A position when the transferring tray 1 to the second original S _2. The above-mentioned vertical movement of the first stacking tray 1 is performed by being driven by a lever 16 which is rotated about a support shaft 15 by a motor (not shown).

On the downstream side of the first stacking tray 1, a paper feed roller 18 is provided.
A separation section (first sheet material separation means) 20 including a separation belt 17 and a separation roller 19 is provided, and is rotated in the direction of an arrow to rotate the first document S ₁ on the first stacking tray _1.
Separate one by one from the bottom one. On the downstream side of the separation unit 20, a sheet bath (i) extends so as to be inverted below the first stacking tray 1, and continues to a platen glass 21 constituting an image processing unit of the image processing main body C. I have.

White entire belt 22 facing the platen glass 21 is not disposed, thereby making it possible to convey the first original S ₁ on the platen glass 21. Platen glass 21
2, the sheet paths (H), (N), and (L) extend upward and reversely toward the first stacking tray 1 as shown in FIG. A large roller 23 and transport rollers 25, 26, 27 for transporting the original in the sheet path are provided respectively. Further, the deflecting guide 29 for switching the sheet path for inverting the front and back of the first original S ₁ (e) and sheet path (Le) (e) is provided.

Further, the first original S ₁ on the platen glass 21 is stored on the first stacking tray 1 after the white full-surface belt 22 is transported, and the first sheet discharge path (g), (v), and (f) are transported. Second sheet discharge paths (H), (C), and (D), which are later guided to the third stacking tray 30 (another stacking unit), are provided. The first sheet discharge path (g), (e), (f) and the second
Deflection guides 28a and 28b are provided to switch the sheet discharge paths (H), (C) and (D). The sheet path (e) includes a plurality of transport roller pairs 31, 32, 33 and the first
Sensors 35 and 36 for detecting the presence or absence of the original S ₁ in are arranged, respectively.

FIG. 3 is a plan view of the reservation type document feeder.

In the figure, the reservation type document feeder is rotatable about a hinge 37 provided on the back side, and a contact portion between the white entire belt 22 and the platen glass 21 can be opened. The first tray 1 of RDF portion B is provided with against which the abutment member 41 abutting the first side edge of the document S _1, the first originals stacked on the first stacking tray 1
Regulating plate 42 for aligning contact with the other side edge of S ₁ is provided freely jogging arrow 43 direction. Further, reservation document setting portion on the second tray 2 A, against which the abutment member 45 abutting the second side edge of the document S ₂ to be mounted thereto
Have is provided, on its opposite side regulating plate 46 for aligning the other side edge of the second original S ₂ are provided.

Since the RDF section B side of the reservation type document feeder is described in the specification of Japanese Patent Application No. 1-287774, a detailed description of the configuration will be omitted.

As shown in FIG. 1, the reserved document setting section A includes a paper feed roller 3, a separation section 7, a roller pair 9, and a discharge roller 13.
In all cases, the driving force is transmitted from one DC motor (not shown) via belts and gears (not shown).
However, the pair of registration rollers 9, an electromagnetic clutch (not shown) it is necessary to rotate from stop rotating once in order to perform a second skew-up on the document S ₂ second original S ₂ is abutted Connected to the motor via The deflecting guides 28a, 28b, 10 constituting the control means branch the sheet path from the first stacking tray 1 to the third stacking tray 30, the second stacking tray 2 to the first stacking tray 1. Each of the deflection guides 28a, 28b, 10 is driven by a solenoid (not shown).

 Next, the operation of the reservation type document feeder will be described.

Specifically, as shown in FIGS. 4 and 5, while one user A is copying three documents, another user B is
An example will be described in which a sheet is reserved and copying is performed.

User A, first after standing mounting originals S _1, the desired mode and number of copies, etc. input from the operation unit (not shown) of the image processing body C to the first tray 1 is ON copy key. For example,
When the single-side mode, the first original S ₁ is separated by the separation unit 20, through a sheet path (Li) (h), the platen glass
Loaded on 21.

Thereafter, image formation is started optical system (not shown) of the image processing body C has started the first exposure of the original S _1. First original S ₁ on the platen glass 21 after image formation is discharged to the first upper stacking tray 1 through the sheet path shown in FIG. 2 (j) (k). The same operation is repeated as many times as necessary.

While the user A is copying, the user B
And loading the second original S ₂ above, the required mode and number of sheets inputted from the operation unit (not shown) of the image processing body C is performed a copy reservation. As a method of making a copy reservation, a method of inputting a key from the operation unit of the image processing main body C or writing the mark sheet and reading and inputting it may be used as in the present embodiment. When copying of the user A is completed in the state where the reservation mode is input, the following operation is performed.

As shown in FIG. 4 (a) (b) (c ), the first original S ₁ of the first on the stack tray 1, first document of the third page
S ₁ is being conveyed image reading at a predetermined position on the platen glass 21 from the sheet path (Li) (see FIG. 1) is performed,
Original S ₁ of the third page after reading completion, the third diagram tray through the second sheet discharge portion (h) (C) (D)
Discharged sequentially on 30. With a certain interval, the second page as well, 3 first original S ₁ page is continuously discharged onto the image reading completion after the third tray 30.

First original S ₁ of the user A is, if it is all discharged onto the third tray 30, the second document S ₂ of the user B of the second on the stacking tray 2, in FIG. 5 ( a) As shown in (b) and (c), the sheet passes through the sheet path (a) and the sheet path (b) (second transport path) and passes through the sheet path (e) and (f) onto the first stacking tray 1. Is discharged. When the third page of the first discharge of the original S ₁ successively from the first stacking tray 1 is discharged to the fifth view all the second document, as shown in (c) S ₂ least significant is completed , second original S ₂ mode is at the same time mode input reserving, for example, when the single-sided mode, the same operation as performed in the previous user a, FIG. 5 (d)
A second image reading of the document S ₂ is performed as shown in FIG.

At the end of the image formation in the image reading and image processing body C of the second original S ₂ of the user B, the second image reading processing of the document S ₂ reserved in the state of FIG. 5 (c) is completed. In the present embodiment, the processing ends in the state of FIG.
A second original S ₂ that the image reading of the user B, by discharging on the third tray 30 as in the case of user A, the second following additional reservation document different from the original S ₂ second 2
Can be received on the loading tray 2.

As described above with reference to FIG. 6, the reserved second document S in the conventional reservation type document feeder is a platen glass 79
Go through the top and turn the front and back of the second original S ₂ by 1
The second stacking tray 89 to the first stacking tray
TOP 71 in order to have performed the document transport, with document transporting time of the second original S ₂ takes a very long time, the reliability of the document conveyed by the sheet path becomes longer was reduced. In this regard, in the present embodiment, the second
Second original S ₂ on the stacking tray 2, the sheet path (b)
The sheet is joined to the sheet path (e) and (f) via the (second conveyance path) and is discharged onto the first stacking tray 1, so that the second
Original from the first loading tray 1 to the second loading tray 2
The transfer of the S ₂ (reserved document) is performed in a short time, and the skew of the second document S ₂ at the time of conveyance is reduced, so that the reliability of the document conveyance is maintained.

In the present embodiment, as shown in FIG. 3, the position of the butting member 45 of the second stacking tray 2 of the reserved document setting section A is changed to the butting member of the first stacking tray 1 of the RDF section B. 41
Is located at a position shifted by a distance l toward the document center side from the position.

In the present embodiment, the abutting members 41 and 45 are fixed to the rear side (upper side in FIG. 3) as viewed from the operation side. In the first stacking tray 1 of the RDF section B, a document size regulating plate is provided. The reference numeral 42 reciprocates in the direction of the arrow 43 shown in the figure and repeats jogging every time one _first document S1 is stacked to align the _second document S2 to be stacked. The regulating plate 42 is normally on standby at the solid line position in FIG. 3 and is located at a position wider than the document size. Second loading tray 2 in reserved document setting section A
Regulation plate 46 of the document size is the response position to a second respective size of the document S ₂ is movable, jogging aligned with the arrow 43 direction as the regulating plate 42 of the foregoing RDF portion B made Absent. The jogging operation of the regulating plate 42 is performed by a solenoid (not shown).

When transferring the reservation document setting portion second original S ₂ from A to RDF unit B, and a l = 0, the abutment member 41 and 45 of the RDF portion B side book document setting portion A side at the same position If any, when the original S ₂ has a skew or the like, in the feeding of the second original S ₂ is to like caught or rides on the abutment member 41 of the RDF portion B of the second original S ₂ , it disturbs the second integrity document S _2, a second second housing of the original S ₂ from tray 2 of the first to the stacking tray 1 is deteriorated.

For this reason, in this embodiment, the abutment member 4 on the RDF section B side is used.
Assuming that the jog amount of 1 is L and the document size is M, the abutment member 45 on the reservation side is set to RDF under the condition of 1 = L / 2.
It is offset from the butting member 41 on the part B side. Accordingly, even when the second document S ₂ is been transported in skewed state, since it has a margin of at least L / 2 width,
It is possible to improve the second consistency and storability of the document S ₂ to be transported.

In the present embodiment, the case where the abutment member 41 on the RDF section B side is fixed has been described, but this abutment member 41 is configured to be capable of jogging similarly to the regulating plate 42,
To a second document S ₂ is reserved is transferred also L 'retracted, L every time the second original S ₂ is transferred one' from its original size and the second document S ₂ are moved by taking a method of aligning a second integrity document S _2, the reliability can be further improved in storability. The position of tray 30 is
It may be at a position for receiving a sheet discharged by turning the belt 22 to the right.

(G) Effects of the Invention As described above, according to the present invention, a reserved document can be transferred to the first sheet material loading table without passing through the image processing unit.

Therefore, the reserved document can be transferred by a short sheet path, and the reserved document can be transferred within a short time, and the occurrence of skewing of the transferred reserved document due to the shortened sheet path can be suppressed. The reliability of the transfer of the reserved document can be improved.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view of a reservation type document feeder showing one embodiment of the present invention, FIG. 2 is a vertical sectional side view schematically showing a sheet path section, and FIG. 3 is a schematic plan view of the apparatus shown in FIG. Figure, 4th
5 and 5 are operation diagrams, FIG. 6 is a vertical sectional side view showing an example of a conventional reservation type document feeder, and FIG. 7 is a flowchart relating to the reservation type document feeder of the present invention. A: reserved document setting section, B: RDF section (reserved document setting section), C: image processing body, S _1: first document (first
Sheet material), S ₂ ... second document (second sheet material),
1... First loading tray (first sheet material loading table), 2
... Second loading tray (second sheet material loading table), 7.
... Separation section (second sheet material separation means), 20 ... Separation section (first sheet material separation means), 21 ... Platen glass (image reading section), 22 ... White full-surface belt, 30 ... 3
(3) the first sheet feeding path, (g) (e) (f) ... the first sheet discharge path, (h) (c) (D) Second sheet discharge path, (b) second transport path.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akima Yoshida 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (58) Field surveyed (Int.Cl. ⁶ , DB name) B65H 83 / 00-85/00 G03G 15/00

Claims (1)

(57) [Claims] 1. A first sheet material loading table, a first sheet material separating means for sequentially feeding out the sheet materials loaded on the first sheet material loading table one by one, and the first sheet material separating means. A first sheet feeding path for guiding the sheet material separated by the image processing section to the image processing section; and a sheet feeding path which is located on the opposite side of the first sheet feeding path across the image processing section and is discharged from the image processing section. A first sheet discharge path for guiding the discharged sheet material to the first sheet material mounting table, a second sheet discharge path for guiding the sheet material discharged from the image processing unit to another stacking unit, Control means for selecting the first or second sheet discharge path; a second sheet material loading table; and a second sheet material separation for sequentially feeding out the sheet materials loaded on the second sheet material loading table one by one. Means for separating the sheet material separated by the second sheet material separating means into the first sheet material. Book document feeder, characterized in that it comprises a second sheet feeding path merging into the first sheet discharge path to guide the sheet stacking plate, the.