JP3441582B2 - Platen for bound manuscript - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manuscript platen for a bookbinding manuscript having a structure in which the front cover and the back cover of a bookbinding manuscript placed on a manuscript support base with the two-sided surface facing upward are sandwiched and fixed by a cover pressing plate.

[0002]

2. Description of the Related Art In an apparatus for scanning an image of a bookbinding original or turning a page by moving a scanning unit relative to the original surface of the bookbinding original, in order to stabilize the image reading and page turning operations of the scanning unit, It is desirable that the height of the document surface of the bookbinding document opened on the document support table is located on the same flat plane as the left and right pages. As described above, as a means for arranging the height of the document surface of the bookbinding document opened on the document support table on the same flat plane on both the left and right pages, conventionally,
A "seesaw-type document supporting device" described in JP-A-61-184527 has been proposed.

However, in this conventional "seesaw-type document supporting device", the document surface of the opened bookbinding document is pressed against a flat glass plate from below, so that the document surface of the bookbinding document opened. The height of each of the left and right pages is on the same flat plane. For this reason, when the document surface is scanned by the above scanning unit using this device, only the opened pages of the bookbinding document can be read, but there is an interposition between this scanning unit and the document surface. Since the glass plate that is provided interferes with the automatic page-turning scanning of the bookbinding document, there is a drawback that the automatic page-turning scanning of the bookbinding document, which is a major feature of this type of apparatus, cannot be performed.

Further, in this conventional "seesaw type document support device", since the document table cannot be moved in the left-right direction with respect to the vertical movement of the document table, the front cover of the bookbinding document and the document placing surface of the document table are separated. Misalignment occurs between the originals, which makes the original placement property unstable. Further, in this conventional "seesaw type document supporting device", there is a problem that the center position of the bookbinding document placed on the document table is displaced due to the inclination of the seesaw of the document table. Further, in this conventional "seesaw type document support device", since there is no connecting member for connecting the end portions on the center side of the left and right divided document plates, the spine of the bookbinding document placed on these document plates is not provided. A gap is generated at a position corresponding to the cover sheet, which makes the positioning and placement of the bookbinding document binding portion unstable. As described above, it has been difficult to perform stable image reading and page-turning scanning of a bookbinding document on the document table in the conventional apparatus of this type.

In order to solve such a problem, the applicant of the present invention applies the front and back two covers of the bookbinding original to a document support table whose left and right heights change, that is, the bookbinding original is opened and placed. Developed the manuscript table. By the way, in this document table, when a scanning body for reading an image is brought into contact with the bookbinding document to move it, and the number of pages of the bookbinding document is biased to the left or right side, the pages of the bookbinding document are The document table on the side with the larger number of pages is pushed down by the thickness corresponding to the difference in the number of pages on the left and right. At this time, since the left and right pages of the bookbinding document are connected to each other by the front cover and the back cover, when one of the left and right document supports is pushed down as described above, the one of the document supports descends. There is a problem in that the other document support table is also lowered as it is dragged to. Therefore, in this type of document table, when either one of the left and right document support tables is lowered,
It is desirable to raise the other document support table so that the left and right document support tables move up and down in balance with each other.

Therefore, in the document table having such a structure that the left and right document support tables move up and down in balance with each other,
A bookbinding document cover pressing plate for fixing the front and back covers of the bookbinding document to the left and right document trays is provided.

[0007]

By the way, in the conventional bookbinding manuscript table developed by the present applicant, the cover of the bookbinding manuscript, which is opened and placed on the document table, is held between the document supporting table. A cover cover pressing plate for fixing was supported by the rotating shaft so as to be openable and closable with respect to the document support base. For this reason, in this bookbinding original document table, when the bookbinding original document is taken out from the original document support table, for example, if the cover sheet pressing plate falls from the open state due to its own weight, the cover sheet pressing plate is pushed against the document supporting table. There was a problem that a loud shock noise was emitted because it was suddenly closed.

Further, in this document table, the pressing plate locking means for locking the cover pressing plate to the document supporting table in a state where the cover pressing plate is closed is provided with a shaft-shaped lock bar and the lock bar. And an engaging piece having a notch that slides on the peripheral surface of the lock bar to fit into the lock bar, and the engaging piece is configured to directly slide on the peripheral surface of the lock bar. The sliding resistance between the engagement piece and the lock bar was large, and the opening / closing operation of the cover pressing plate was not so smooth.

Further, in this document table, the shape of the sliding contact portion of the engaging piece which slides on the peripheral surface of the lock bar is formed in a linear shape, and the lock of the sliding contact portion of the engaging piece is locked. Since the contact pressure on the bar changes depending on the opening / closing angle of the cover pressing plate with respect to the document support table, the opening / closing operation of the cover pressing plate cannot be performed very smoothly.

[0010]

The invention according to claim 1 is
In order to solve the above-mentioned problems, there is provided a document table for a bookbinding document to be placed with the facing surface of the bookbinding document facing upward, and the document table is divided into at least two left and right sides, and the document table is opened on the document table. A cover of a bookbinding original, which is openably and closably supported by a rotary shaft with respect to the original support for holding and fixing the front and back covers of the bound original, It has a shock absorbing means for reducing the impact when it falls due to its own weight, and the shock absorbing means is composed of a spring.
The spring is centered on the rotation axis
The extended end of is locked to the cover cover plate and the other extended end is
The cover holder is locked by the document support table.
Elasticity in the direction of opening the cover cover plate against the weight of the plate
And the cover pressing plate is closed at the other extension.
To the abdomen of the non-cover holding surface of the cover holding plate
It is configured to be curved upward so as to elastically abut . In this way, by absorbing the impact of the cover pressing plate when it falls due to its own weight, the collision between the cover pressing plate and the document support table that causes the generation of impact noise is avoided, and the cover pressing plate against the document support plate is prevented. Will be quietly closed. Claim
In order to solve the above-mentioned problems, the invention according to claim 3 claims
On the platen for the bookbinding manuscript described in 2, the front side and the back side
The side locking portion is urged in the rotation axis direction by the elastic member.
Sliding shaft-shaped lock bar and the peripheral surface of the lock bar
An engaging piece having a notch that fits into the lock bar.
It will be configured. The invention according to claim 4 solves the above problems.
In order to make a decision, place it on the platen for the bookbinding manuscript according to claim 3.
Te, the shape of the sliding portion of the engagement piece which slides the circumferential surface of the shaft-shaped lock bar, all sliding portions of the engaging pieces are in a substantially uniform pressure to said lock bar those It is formed in a quadratic curve shape in contact with each other. As a result, the contact pressure of the sliding contact portion of the engagement piece against the lock bar does not change depending on the opening / closing angle of the cover pressing plate with respect to the document support table, and the opening / closing operation of the cover pressing plate can be performed smoothly.

[0011]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a front view showing an example of a document table of a page turning apparatus according to the present invention.
On the document supporting bases 101 and 102 on the left and right of the document table 1,
The front cover and the back cover (spine) in the opened state
It is sandwiched and fixedly supported by cover sheet pressing plates 108a and 108b. FIG. 2 is a perspective view showing a state in which the cover pressing plate 108a of the document support bases 101 and 102 on the left and right of the document base 1 in FIG. 1 is opened.

The left and right document support bases 101 and 102 are shown in FIG.
As shown in FIG. 3 and FIG. 3, two sets of link mechanisms 103a, 103b and 103c, 103d are respectively supported, and the vertical movement of each document support table 101, 102 is synchronized with each link mechanism 103a, 103b, 103c, 103d. Each gear 105 through the drive shaft 104 that rotates
a, 105b, 105c, 105d, 105e, 105
f and 105g, respectively. As a result, the vertical movements of the respective document support bases 101 and 102 are controlled by the respective gears 105.
a, 105b, 105c, 105d, 105e, 105
It is converted into a rotational motion of f, 105 g.

Here, each link mechanism 103a, 103b
And gears 105a, 10 directly connected to 103c, 103d
5b and 105f, 105g mesh with each other, and an odd number (three in this embodiment) of gears 10c, 105d, 105e as idler gears form a gear train between them, as shown in FIG. It is installed in.

As a result, either the left or right original support table 1
When 01 and 102 move up and down, the other document support table is vertically moved in the opposite direction by the same amount as the amount of movement of the one document support table. The up and down movements of the document supporting bases 101 and 102 are performed by an external force, for example, an operation of an operator or an operation of pressing a bookbinding document 100 by a scanning unit (not shown).

An electromagnetic clutch (not shown) is connected to the drive shaft 104 via a gear train. When the electromagnetic clutch is turned on, the drive shaft is fixed via the gear train, whereby each of the gears 105a, 10a
5b, 105c, 105d, 105e, 105f, 10
5g together with the drive shaft and each link mechanism 103a, 103b
And 103c and 103d are fixed, the left and right document support bases 101 and 102 cannot move vertically, and the left and right document support bases 101 and 102 are in the posture (vertical movement position) when the electromagnetic clutch is turned on. Retained.

1 and 2, in the vicinity of the outer ends of the document supporting bases 101 and 102 of the document base 1 divided into two parts, the cover pressing plate 108a, with the rotary shaft 109 as the central axis. 108b are rotatably supported respectively. The cover holding plates 108a and 108b are closed by the respective rotation operations of the document support bases 101 and 102 about the rotation shaft 109, whereby the bookbinding document 10 is closed.
The front cover and the back cover of No. 0 are sandwiched between the document supporting bases 101 and 102 and the cover pressing plates 108a and 108b, and in this state, the front and back sides of the cover pressing plates 108a and 108b are formed. The stoppers 110a and 110b are provided with end portions 112 of the lock bars arranged on the document supporting bases 101 and 102, respectively.
By engaging a and 112b (see FIG. 3), they are fixed to the respective document support bases 101 and 102, respectively. At this time, the binding portions of the front cover and the back cover of the bookbinding original 100 are aligned with the edges of the original document supporting bases 101 and 102 and the cover pressing plates 108a and 108b.
Securely fixed to. To remove the bookbinding original 100, the operation levers 111 attached to the cover holding plates 108a and 108b are rotated to move the cover holding plates 108a and 108b.
Locking portion 110 formed on the front side and the back side of 108b
It can be easily operated by displacing the end portions 112a, 112b, 112c, 112d of the lock bar from a, 110b, 110c, 110d in a direction of removing the lock bar ends 112a, 112b, 112c, 112d.

By the way, in the document table 1 having the above-described structure, as described above, when the bookbinding document is taken out from the document support table, for example, if the cover sheet pressing plate falls from the open state by its own weight, Since the cover cover plate is suddenly closed with respect to the document support table, there is a problem that a large impact sound is generated.

Therefore, in the present invention, each original support 10
1, 102 and the cover holding plates 108a and 108b,
A structure is provided in which cushioning means 500 is provided to alleviate the impact when the cover pressing plates 108a and 108b are dropped due to their own weight. The cushioning means 500 has, for example, one of its extending ends with the rotation shaft 109 as the center, and a cover pressing plate 108a (108).
b), and the other extended end of the original support 101 (10)
When the cover cover plate 108a (1
08b) against its own weight, cover cover plate 108a (108b)
The spring 501 is composed of a coil spring or the like having elasticity to open b). As a result, in the document table of the present invention, the habit of turning in the opening direction is always urged by the action of the spring 501 to the cover cover pressing plates 108 and 108b, so that the cover cover pressing plate 10
8a and 108b do not drop suddenly due to their own weight, and the binding and removal operations of the bookbinding original 100 can be smoothly performed without generating impact noise.

Incidentally, as is well known, the coil spring and the like are plastically deformed to a slight extent by being subjected to repeated loads, so that the initial shape cannot be maintained due to the change over time. Such a change in the shape of the spring is remarkable at a bent portion having a small curvature (a winding portion around the rotating shaft 109 in the example of FIG. 4) and does not occur so much at a straight portion. Therefore, the spring 50 in this embodiment is
As shown in FIG. 4, 1 is a document support table 101 (10
2) The extending portion 501a on the side locked by
In the closed state of the 08a (108b), the cover pressing plate 108a (108b) is formed in a curved shape in a long bow so as to elastically contact the abdomen of the non-cover holding surface of the cover sheet. As a result, in the present embodiment, even when the winding portion of the spring 501 around the rotary shaft 109 undergoes the above-described shape change and the elastic function of the rotary shaft portion as a coil spring is deteriorated, the original document support table is used. Extending part 501a on the side locked by 101 (102)
However, since the cover pressing plate 108a (108b) is closed, the cover pressing plate 108a (108b) functions as a kind of leaf spring that elastically abuts against the abdomen of the non-cover holding surface of the cover pressing plate 108a (108b). Greatly increased.

Further, as shown in FIG. 2, the document table 1 of the present embodiment is arranged such that the cover plates 108a, 108b are closed on the cover plates 108a, 108b.
The pressing plate locking means for locking 108b is the cover pressing plate 1
Operation lever 11 arranged on the front side of 08a and 108b
Rotation of 1 disengages the front-side locking pieces 110a, 110c of the cover sheet pressing plates 108a, 108b from the front-side lock bar ends 112a, 112c, and the front-side locking pieces 110a. , 110c in conjunction with the releasing operation of the cover pressing plates 108a, 108b.
10b, 110d and the lock bar ends 112b, 1 on the back side
12d is disengaged. In such a holding plate locking means, the operating lever 111 is installed only on the front side due to operability problems. Therefore, when the operating lever 111 is rotated, the locking piece 1 on the front side is rotated.
10a, 110c and the lock bar end 112a on the front side,
The engagement with the 112c is released, and the locking piece 1 on the back side continues.
10b, 110d and the lock bar ends 112b, 1 on the back side
Even if the engagement with 12d is once released, due to a slight rattling of the lock lever sliding part, the lock bar end 112 on the back side is
Returning to the direction in which the b and 112d are re-engaged, the locking pieces 110b and 110d on the rear side and the lock bar end 112b on the rear side are
The engagement with 112d may not be disengaged.

Therefore, in the document table 1 of the present embodiment, as shown in FIG. 2, the above-mentioned spring 501 is arranged behind the document table 1. In the document table having this structure, the locking pieces 110b and 110d on the back side and the lock bar end 11 on the back side are provided.
Once the engagement with 2b and 112d is released, the action of spring 501 causes cover sheet pressing plate 108a (108b) to be pressed.
Since the back side of the lock bar is lifted, slight backlash of the sliding portion of the lock lever causes the lock bar end portions 112b, 1b on the back side to be lifted.
Even if 12d returns to the direction of reengagement, the locking piece 11 on the back side
0b, 110d and the lock bar ends 112b, 11 on the far side
2d does not re-engage, and cover cover plate 108
The unlocking operation of a and 108b can be smoothly performed. Further, in the document table of this configuration, the spring 50
Since 1 is located on the back side, the presence of the spring 501 does not interfere with the setting and removal of the bookbinding document 100.

By the way, in the conventional document table, the document support table 10 is kept in a state in which the cover sheet pressing plates 108a and 108b are closed.
As shown in FIG. 5, the holding plate locking means for locking the cover sheet holding plates 108a and 108b to the shafts 1, 102 slides on the shaft-shaped lock bar 112 and the peripheral surface of the lock bar 112 to lock the lock bars. And an engaging piece 110 having a notch 110k that fits into the locking bar 112.
Since it was configured to directly slide on the peripheral surface of No. 2, the sliding resistance between the engagement piece 110 and the lock bar 112 is large,
The opening / closing operation of the cover pressing plates 108a and 108b was not so smooth. Therefore, in the document table of the present embodiment, as shown in FIGS. 6 and 7, a portion of the lock bar 112 where the engaging piece 110 is in sliding contact, that is, the above-mentioned lock bar end portion 112.
A rotating ring 112k made of a collar or the like is rotatably fitted to the a, 112b, 112c, and 112d. This rotating ring 112k is provided with the lock bar end 112.
The retaining rings 112s such as snap rings are attached to the a, 112b, 112c, and 112d so as to prevent them from coming off. As a result, the contact between the engagement piece 110 and the lock bar 112 becomes a rotational contact, the sliding resistance is reduced, and the opening / closing operation of the cover pressing plates 108a and 108b is smoothly performed. Further, in the conventional document table, as shown in FIG. 5, the shape of the sliding contact portion of the engagement piece 110 that slides on the peripheral surface of the lock bar 112 is formed in a linear shape, and the sliding of the engagement piece 110 is performed. The contact pressure of the contact portion against the lock bar 112 is such that the cover pressing plate 1 against the document supporting bases 101 and 102.
Since the opening / closing angle of the cover sheets 08a and 108b changes, the opening / closing operation of the cover sheet pressing plates 108a and 108b cannot be performed very smoothly. Therefore, in the document table of the present embodiment, as shown in FIG. 8, the shape of the sliding contact portion of the engaging piece 110 sliding on the peripheral surface of the lock bar 112 is the same as that of all the sliding contact portions of the engaging piece 110. The lock bar 112 is formed in a quadratic curve shape that abuts on the lock bar 112 with a substantially uniform pressure. Thereby, the engaging piece 110
The contact pressure of the slide contact portion of the cover bar against the lock bar 112 is equal to that of the cover pressing plate 108a, 1a against the document support base 101, 102.
It does not change depending on the opening / closing angle of 08b, and the opening / closing operation of cover sheet pressing plates 108a and 108b can be smoothly performed.

On the other hand, as shown in FIG. 9, the mounting structure of the document support table 102 of the document table 1 is as shown in FIG.
The support pieces 102a are formed at the four corners of the
2a is configured to be attached to the support pins 103p of the link mechanisms 103c and 103d described above via the bearings 103k and the clips 103s. Further, a supporting piece 102a can be easily formed by bending on the upper surface of the document supporting base 102, and the bearing 103k and the clip 1 can be formed.
In order to facilitate the work of attaching and detaching 03s from the upper surface side of the document support base 102, relatively large openings 102b are formed at the four corners. As described above, providing the openings 102b at the four corners of the document support table 102 is extremely useful for simplifying the attachment structure of the document support table 102 and improving workability at the time of attachment and removal as described above. On the other hand, there is a drawback that it promotes the entry of dust into the document table. Therefore, in the document table of the present embodiment, as shown in FIG. 2, the openings 102b provided at the four corners of the document support table 102 are closed by seals 102c having a size sufficient to cover the openings 102b. . The sticker 102c is preferably attached to the document support table 102 by adhesion with a double-sided tape or the like. Also, this seal 10
By forming 2c with a member having a high friction coefficient such as a foamed rubber sheet, the bookbinding original 1 for the original support 102 is formed.
It is possible to further improve the holding property of the No. 00 cover sheet. It should be noted that the above-mentioned opening and seal may be provided on the document support table 101 side.

[0024]

As described above, according to the present invention, the cover holding plate for holding and fixing the bookbinding original on the original support table does not drop by its own weight, and the cover holding plate can be smoothly opened and closed. At the same time, it becomes easy to set the binding document. When the cover sheet pressing plate is opened, the engagement of the locking portion on the back side can be easily disengaged only by operating the operation lever on the front side, so the operation is simple and reliable.

Further, since the lock bar of the engaging portion of the cover sheet pressing plate and the engaging piece come into contact with each other at a substantially constant pressure, the cover sheet pressing plate is closed.
The operation force when chaining is constant and stable operation can be realized
It

[0026]

[Brief description of drawings]

FIG. 1 is a front view showing an example of a document table of a page turning device according to the present invention.

FIG. 2 is a perspective view showing a state in which cover cover plates of the document supporting bases on the left and right of the document supporting plate are opened.

FIG. 3 is a perspective view showing a support mechanism of the document support table.

FIG. 4 is a cross-sectional view showing the configurations of a document support table and a cover pressing plate of the document table of the present invention.

FIG. 5 is a front view of relevant parts showing a configuration of a lock bar and an engaging piece of an engaging portion of a cover sheet pressing plate in a conventional document table.

FIG. 6 is a side view of essential parts showing a configuration of a lock bar and an engagement piece of an engagement portion of a cover sheet pressing plate in the document table of the present invention.

FIG. 7 is a perspective view of essential parts showing a configuration of a lock bar of an engaging portion of a cover sheet pressing plate in the document table of the present invention.

FIG. 8 is a front view of relevant parts showing a configuration of a lock bar and an engaging piece of an engaging portion of a cover sheet pressing plate in the document table of the present invention.

FIG. 9 is a perspective view of an essential part showing the attachment structure of the document support table in the document table of the present invention.

[Explanation of symbols]

1 Document Plate 100 Binding Documents 101, 102 Document Support Plates 108a, 108b Cover Press Plate 109 Rotation Shaft 110 Locking Pieces 110a, 110b, 110c, 110d Locking Pieces 111 Operation Lever 112 Lock Bars 112a, 112b, 112c, 112d Lock Bars End part 112k rotating ring 500 cushioning means 501 spring 501a spring extension

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G03B 27/00-27/80 H04N 1/04

Claims (4)

(57) [Claims] 1. A manuscript table for a bookbinding manuscript to be placed with the spread surface of the bookbinding manuscript facing up, the manuscript support table being divided into at least two left and right, and the bookbinding manuscript opened on the manuscript support table. In the original plate of a bookbinding original, which is provided with a cover holding plate which is openably and closably supported by a rotation shaft with respect to the original supporting plate for holding and fixing the front cover and the back cover of the above, when the cover pressing plate falls due to its own weight, has a buffer means for relieving the shock, the buffer means comprises a spring, said spring about a <br/> the rotary shaft, while the extending end is locked to the cover pressing plate, by the other extending end is locked to the document support table, have a direction of resilience to open the said surface sheet pressure plate against the weight of the cover pressing plate, the extended portion of the other, When the cover cover plate is closed, the cover cover plate is not exposed. Platen bookbinding document, characterized in that a resiliently curved shape upwardly to abut against the abdomen of the clamping surface. 2. The manuscript platen for the bookbinding manuscript according to claim 1.
Te has a cover holding plate locking means for locking the said surface paper pressing plate to the document support table in a state in which the cover pressing plate is closed, and an operating lever disposed on the front side of the platen, the Operation lever
By the rotation of the over in conjunction with the releasing operation of the front-side locking portion with the engagement of the front-side locking portion of the cover sheet pressing plate locking means is released the rear side locking of the cover holding plate locking means have a configuration in which the engagement of the locking portion is released, the document table of the binding document, characterized in that disposed above the spring on the back side of the document table. 3. The bookbinding manuscript for the bookbinding manuscript according to claim 2.
Te, the front and rear side locking portion, the rotation by an elastic member
It is characterized by comprising a shaft-shaped lock bar urged in the axial direction and an engaging piece having a notch that slides on the peripheral surface of the lock bar and fits into the lock bar. A platen for binding manuscripts. 4. The manuscript table for the bookbinding manuscript according to claim 3.
The shape of the sliding contact portion of the engaging piece that slides on the peripheral surface of the shaft-shaped lock bar so that all the sliding contact portions of the engaging piece contact the lock bar with a substantially uniform pressure. An original plate for a bookbinding original, which is formed in a quadratic curve shape in contact with the original.