JP3249242B2 - Book manuscript reading device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a book document reading apparatus, and more particularly, to a book document reading apparatus having a page turning function and a reading function of a book document.

[0002]

2. Description of the Related Art Recently, various reading apparatuses have been developed which automatically turn pages of a document after reading information of the book document. In this method, the document is opened with the reading surface of the document facing upward, and the document is reciprocated by the page turning reading means on the document surface to separate the pages of the book document one by one and to read the document information. A reading scan is performed.

The original surface of the original is pressed by a pressing sheet, and the reading means moves on the original surface together with the pressing sheet during reciprocation. As a conventional book document reading apparatus of this type, for example, there is one as shown in FIG.
In FIG. 7, reference numeral 1 denotes a carriage which constitutes a page turning reading unit, and the carriage is reciprocated by moving means (not shown). The carriage 1
Inside, various devices such as a scanning optical system having a page turning function and a reading function and a page suction device are housed, and are arranged opposite to the document surface of the book document placed and opened at the document reading position. .

Reference numeral 2 denotes a pressing sheet. The pressing sheet 2 is provided at both ends of the carriage 1 in the moving direction (indicated by an arrow) (only one is shown, and the other side is not shown), and is opened on the upper surface. The original comes into contact with the original surface of the book original and presses the original. One end of the press sheet 2 is attached to a take-up roller 3 provided in the reading apparatus main body. The take-up roller 3 is driven by a driving unit (not shown) to take up and unwind the press sheet 2. It has become. The other end of the pressing sheet 2 is attached to a mounting section 4 provided on the reading apparatus main body. The mounting section 4 is provided on the reading apparatus main body and extends in the width direction of the pressing sheet 2. A table 5, a double-sided tape 6 provided along the mounting table 5 and bonding the other end of the holding sheet 2 to the mounting table 5, and a holding table 7 for pressing the holding sheet 2 against the mounting table 5 via the double-sided tape 6.
And is composed of

The carriage 1 is provided with a carriage roller 8, and the pressing sheet 2 is in sliding contact with the roller 8. A predetermined portion of the pressing sheet 2 is in sliding contact with a driven roller 9 attached to the reading device main body between the carriage roller 8 and the take-up roller 3. The other side of the holding sheet is also supported by the same configuration as described above.

In such a reading apparatus, when the carriage 1 moves to the left in the drawing, the take-up roller 3 takes up the press sheet 2 so that the press sheet is taken up from the other take-up roller. Since the carriage 1 is removed, the carriage 1 can move on the document surface together with the pressing sheet 2 and the other pressing sheet.

[0007]

However, in such a conventional reading apparatus, in order to apply a constant tension to the entire area of the pressing sheet 2, the pressing sheet 2 is provided.
Must be parallel to the axial direction of the winding roller 3 , the carriage roller 8 and the driven roller 9, but the other end of the pressing sheet 2 is adhered to the mounting table 5 with the double-sided tape 6. The other end may be inclined with respect to the width direction and may not be parallel to the take-up roller 3 or the like, and the tension at the time of attachment may vary in the width direction. For this reason, there is a problem that the movement of the page turning reading device cannot be performed smoothly.

In particular, when the reading width is A3 width,
Since the width of the pressing sheet 2 needs to be equal to or more than the A3 width, that is, 297 mm or more, it is difficult to obtain the parallelism of such a large pressing sheet 2. In addition to this, after the other end of the holding sheet 2 is adhered to the double-sided tape 6,
Therefore, there is a problem that the work of attaching the presser sheet 2 is very troublesome.

In view of the above, according to the present invention, it is possible to smooth the reciprocating movement of the page turning reading apparatus while keeping the tension of the press sheet constant, and to improve the workability of attaching the press sheet to the reading of a book document. It is intended to provide a device.

[0010]

According to the first aspect of the present invention,
In order to solve the above problems, on the document reading position toward
Means for separating the pages of the book document one by one and for scanning the document information by reciprocating with respect to the document surface of the book document placed in the open state ; A pair of pressing sheets provided at both ends in the moving direction of the turning-over reading means and contacting the original surface of the book original and pressing the original; A pair of take-up rollers capable of taking up and unwinding the sheet, a pair of mounting portions provided on the main body of the reading device to which the other end of the pressing sheet is mounted, and provided at both ends in the moving direction of the page turning reading means. A driven roller on which a predetermined portion of the press sheet is slid, and a take-up roller in the moving direction moves the press sheet when the page turning reading means reciprocates. In the reader of the book-type document as take come, together by joining the other end into a tubular of the presser sheet, by inserting the shaft into the cylindrical portion,
By providing the mounting portion with an engaging portion that engages with the shaft,
The other end of the holding sheet is attached to the attaching portion via the shaft.

According to a second aspect of the present invention, in order to solve the above-mentioned problem, at least two engaging portions are provided in parallel with the main scanning direction of reading the document information. According to a third aspect of the invention, in order to solve the above problems, the mounting portion is characterized by having at least two protrusions disposed on both axial ends outer side of the shaft.

[0012]

According to the first aspect of the present invention, the other end of the pressing sheet is joined to form a cylinder, a shaft is inserted into the cylindrical portion, and the mounting portion has an engaging portion for engaging with the shaft. With this arrangement, the other end of the pressing sheet is attached to the attaching portion via the shaft. Therefore, the presser sheet is easily attached to the attachment portion, and the workability of the attachment work is improved.

According to the second aspect of the present invention, at least two engaging portions are provided in parallel with the main scanning direction of reading the document information. Therefore, the other end of the pressing sheet is disposed in parallel with the take-up roller and the like, and the tension of the pressing sheet is easily constant. As a result, the reciprocating movement of the page turning reader is performed smoothly. Claim 3
In the described invention, the attachment portion has at least two or more projections disposed outside both ends in the axial direction of the shaft.
Therefore, the movement of the shaft in the width direction of the pressing sheet is restricted, and the shaft does not fall out of the cylindrical portion. As a result, the presser sheet is stably mounted on the mounting portion.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIGS. 1 to 6 are diagrams showing an embodiment of a book document reading apparatus according to any one of the first to third aspects of the present invention. First,
The configuration will be described. 1 and 2, reference numeral 11 denotes a main body of the reading device, and a contact glass 12
Is provided. The contact glass 12 is used to read only one page of a sheet document and a book document, and is pressed by a pressure plate (not shown) when the sheet document and the book document are placed.

A pair of document tables 13a and 13b are provided in the main body 11, and the document tables 13a and 13b are arranged as shown in FIG.
Opened up (ie opened )
The book original 14 is placed and moved up and down. A page turning reading means is provided above the document tables 13a and 13b.
(Hereinafter simply referred to as reading means) 15 is provided,
The reading means 15 accommodates a reading unit 17 and a page turning unit 18 in a carriage 16.

A timing belt 19 is attached to the carriage 16, and both ends of the timing belt 19 are wound around a driving pulley 20a and a driven pulley 20b.
The drive pulley 20a is connected to a pulley motor 22a of a drive motor 22 via a timing belt 21. When the driving force of the pulley motor 22a is transmitted via the timing belt 21, the drive pulley 20a drives the timing belt 19 to drive the carriage 16
Is reciprocated with respect to the original surface of the book original 14.

The reading means 15 includes first light sources 24a, 24b,
A first mirror 25, a second mirror 26, a third mirror 27, an imaging lens 28, a photoelectric conversion element 29, second light sources 30a and 30b, and a second
The carriage 16 is composed of a light source reflection mirror 31.
Is moved at the reading position 23 when the
When light is emitted from the light sources 24a and 24b to the original on the contact glass 12, the light images of the light sources 24a and 24b are
5. An image is formed on the photoelectric conversion element 29 via the second mirror 26, the third mirror 27, and the imaging lens 28.

The first mirror 25 is movable within a range indicated by a solid line and a dotted line, and moves to a position indicated by a broken line when reading information of the book document 14. When the first mirror 25 is moved to this position and the carriage 16 is moved in the direction of arrow B, when the second light source 30a, 30b irradiates the book original 14 with light at the reading position 32, the light source 30a, The light of 30b is reflected by the second light source reflecting mirror 31, the second mirror 26, the third mirror 27, and the imaging lens 28.
The image is formed on the photoelectric conversion element 29 via the.

The page turning section 18 includes a turning belt 33.
And a belt driving roller 34 and a belt driven roller 35 that stretch the turning belt 33, and a charging roller 36 that slides on the belt 33. The turning belt 33 is configured to move at the same speed as the carriage 16 by being driven by the pair of rollers 34 and 35 as the carriage 16 moves, and when a voltage is applied to the charging roller 36, the belt An unequal electric field is formed on 33 to generate an attractive force.

On the other hand, a pair of pressing sheets 37, 38 are provided at both ends of the carriage 16 in the moving direction, and the pressing sheets 37, 38 are provided on the document surface of the book document 14 when the document tables 13a, 13b are raised. , And presses the original 14. One end of the press sheet 37 is attached to a take-up roller 39 provided on the main body 11 located at one end in the movement direction of the carriage 16, and the press sheet 37 is taken up and taken up by the take-up roller 39. It is supposed to be. The other end of the holding sheet 37 is attached to an attaching portion 40 provided on the main body 11 as shown in FIG.
Between the one end and the other end, it is in sliding contact with a driven roller 41 provided on the main body 11.

A carriage roller 42 as a driven roller is provided at one end of the carriage 16 in the moving direction, and a pressing sheet 37 is in sliding contact with the roller 42. A gear 43 is connected to the winding roller 39, and the gear 43 is configured to transmit a driving force from the driving pulley 20a. The other end of the pressing sheet 38 is attached to a take-up roller 44 provided on the main body 11 located at the other end of the carriage 16 in the moving direction.
38 is wound around the winding roller 44 and unwound. The other end of the presser sheet 38 is
It is attached to an attachment portion 45 provided on the body 11 and is in sliding contact with a driven roller 46 provided on the main body 11 between the one end and the other end.

A pair of carriage rollers 47 and 48 as driven rollers are provided at the other end of the carriage 16 in the moving direction, and a pressing sheet 38 is in sliding contact with the rollers 47 and 48. A gear 49 is connected to the take-up roller 44, and the gear 49 is configured to transmit a driving force from the driven pulley 20b. On the other hand, the other end of the pressing sheet 37 is formed into a tubular shape by bonding, welding, sewing, or the like as shown in FIG. 4, and this portion constitutes a tubular portion 37a, and a shaft 50 Is inserted.

Also, as shown in FIG.
The two engaging portions 40a and 40b are provided.
a and 40b are arranged in parallel with the main scanning direction of reading the document information, that is, in parallel with the axes of the take-up roller 39, the driven roller 41 and the carriage roller 42, and the shaft 50 is engaged as shown in FIG. Are to be combined. Also,
The mounting portion 40 is provided with two protrusions 40c and 40d. The protrusions 40c and 40d are disposed outside both ends in the axial direction of the shaft 50, and the shaft 50 moves in the width direction of the pressing sheet 37. Is regulated. With such a configuration, the winding speed of the pressing sheets 37 and 38 is twice the moving speed (scanning speed) of the carriage 16.

The other end of the pressing sheet 38 and the mounting portion 45 have the same configuration as that described above, and thus the description is omitted. Next, the operation will be described. First, after the shaft 50 is inserted into the cylindrical portion 37a at the other end of the pressing sheet 37, the shaft 50 is engaged with the engaging portions 40a and 40b, so that the pressing sheet is
The other end of 37 is attached to the attachment part 40. Also, presser sheet
The other end of 38 is attached to the attachment portion 45 in the same manner.

To read the book document 14, the book document 14 is placed on the document tables 13a and 13b, raised, and the document surface is pressed by the pressing sheets 37 and 38. Then, the motor pulley 22a is driven, and the timing belt is driven via the timing belt 21 and the drive pulley 20a.
The document information is read by driving the carriage 19 to scan the carriage 16 in the direction of arrow B and irradiating the reading position 32 with light from the light sources 30a and 30b.

[0026] At this time, the take-up roller 39 by the driving pulley 20 a and the gear 43 are driven, together with the presser sheet 37 that is wound on the roller 39 is detached winding,
The take-up roller 44 is driven by the driven pulley 20b and the gear 49.
Is driven, and the pressing sheet 38 is taken up by the take-up roller 44 at twice the scanning speed of the carriage 16. on the other hand,
When turning over the pages of the book document 14, the timing belt 21 is driven to move the carriage 16 in the direction of arrow A. At this time, a voltage is applied to the charging roller 36, an uneven electric field is formed on the belt 33, and an attraction force is generated, so that one page opened by the belt 33 is attracted, and this page is attracted. The page is turned by scanning the carriage from right to left.

[0027] At this time, the driving pulley 20 a and the gear 43
The take-up roller 39 is driven by this, the pressing sheet 37 is taken up by the roller 39 at twice the scanning speed of the carriage 16, and the take-up roller 44 is driven by the driven pulley 20 b and the gear 49 to take up Roller 44
The pressing sheet 38 wound up is unwound. As described above, in this embodiment, the other ends of the holding sheets 37 and 38 are joined to form a cylinder, and the shaft 50 is inserted into the cylindrical parts 37a and 38.
Into the mounting portion 40, 45 and the engaging portion 40 that engages with the shaft 50.
By providing a and 40b, the other ends of the holding sheets 37 and 38 are attached to the attaching parts 40 and 45 via the shaft 50, so that the holding sheets 37 and 38 can be easily attached to the attaching parts 40 and 45. Therefore, the workability of the mounting work can be improved.

Further, since the mounting portions 40 and 45 have two engaging portions 40a and 40b so as to be parallel to the main scanning direction of reading the document information, the other end portions of the pressing sheets 37 and 38 can be used. It can be arranged in parallel to the winding rollers 39, 44, the driven rollers 41, 46 and the carriage rollers 42, 47, 48,
The tension of the holding sheets 37 and 38 can be easily made constant. As a result, the carriage 16 can reciprocate smoothly.

Further, since the mounting portions 40, 45 have two projections 40c, 40d disposed outside both ends in the axial direction of the shaft 50, the mounting portions 40, 45 are provided with the shafts in the width direction of the pressing sheets 37, 38. It is possible to prevent the shaft 50 from slipping out of the cylindrical portion 37a without moving the shaft 50. As a result, the holding sheets 37, 38 can be stably mounted on the mounting portions 40, 45.

[0030]

According to the first aspect of the present invention, the holding sheet can be easily attached to the attaching portion, and the workability of the attaching operation can be improved. According to the second aspect of the present invention, the other end of the pressing sheet can be disposed in parallel with the take-up roller, the driven roller, and the driven roller provided in the page turning reading means, and the tension of the pressing sheet can be improved. Can be easily made constant. As a result, the reciprocating movement of the page turning reading means can be performed smoothly.

According to the third aspect of the present invention, the shaft does not move in the width direction of the pressing sheet, and the shaft can be prevented from falling out of the cylindrical portion. As a result, the holding sheet can be stably mounted on the mounting portion.

[Brief description of the drawings]

FIG. 1 is a diagram showing an embodiment of a book document reading apparatus according to the invention according to any one of claims 1 to 3, and is an overall configuration diagram thereof.

FIG. 2 is a configuration diagram of a page turning reading unit according to an embodiment;

FIG. 3 is a diagram illustrating a state in which a pressing sheet is attached to a reading apparatus main body according to an embodiment;

FIG. 4 is a view showing a state in which a rod is removed from the inside of the tubular portion of the pressing sheet according to the embodiment.

FIG. 5 is a configuration diagram of a mounting portion according to one embodiment.

FIG. 6 is a diagram showing a state in which the pressing sheet according to the embodiment is attached to an attaching portion.

FIG. 7 is a diagram showing a state in which a pressing sheet is attached to a conventional reading device main body.

[Explanation of symbols]

 11 Reading device body 14 Book original 15 Page turning reading means 32 Reading position 37, 38 Pressing sheet 37a Tubular part 39, 44 Take-up roller 40, 45 Mounting part 40a, 40b Engaging part 40c, 40d Projecting part 42, 47, 48 Carriage roller (driven roller) 50 axes

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04N 1/04-1/207 G03G 15/04-15/047 G03G 27/58-27/64

Claims (3)

(57) [Claims] 1. A state in which a document reading position is opened with its face upward.
A page turning reading means for separating the pages of the book document one by one and performing scanning for reading the document information by reciprocatingly moving with respect to the document surface of the book document placed in Provided at both ends in the movement direction,
A pair of pressing sheets that contact the original surface of the book original and press the original; and a pair of windings that are provided on the reading device main body, one end of the pressing sheet is attached, and the pressing sheet can be wound and unwound. A take-up roller, a pair of mounting portions provided on the main body of the reading device to which the other end of the press sheet is mounted, and a driven portion provided at both ends in the moving direction of the page turning reading means, and a predetermined portion of the press sheet is slidably provided. A book-type original reading device, comprising: a roller for rewinding the page turning reading means, wherein the winding roller in the moving direction winds the pressing sheet when the page turning reading means reciprocates. And the shaft is inserted into the cylindrical portion, and the mounting portion is provided with an engaging portion that engages with the shaft, so that the other end of the pressing sheet is inserted through the shaft. Reader book document, characterized in that attached to attaching part. 2. The book document reading apparatus according to claim 1, wherein at least two or more of the engaging portions are provided in parallel with a main scanning direction of reading the document information. 3. The book document reading apparatus according to claim 2, wherein said attachment portion has at least two projections disposed outside both ends in the axial direction of the shaft.