JP2000272780A - Side edge truing-up device for sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure smooth truing-up of side edge of sheets in a simple structure. SOLUTION: This device includes an oscillation stopper member 46 for temporarily holding stimulable phosphor sheets at their ends in the carrying direction, positioning plates 48a, 48b disposed on the side of a side edge truing-up reference P1 of the stimulable phosphor sheets 20, a sliding member 50 movable back and forth to the side of the side edge truing-up reference P1, push-in plates 52a, 52b provided on the sliding member 50 for pushing the stimulable phosphor sheets into the side of the side edge truing-up reference P1 and a driving means 54 provided on the sliding member 50 for oscillating the oscillation stopper member 46 on a carrying passage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for narrowing a sheet body such as a photographic film or a stimulable phosphor sheet in a direction intersecting a conveying direction.

[0002]

2. Description of the Related Art For example, stimulable phosphors (stimulable phosphors)
There is known a system that once records radiation image information of a subject such as a human body, reproduces the radiation image information on a photographic photosensitive material such as a photographic film, or outputs a visible image on a CRT or the like. I have.

The stimulable phosphor is composed of radiation (X-ray, α-ray, γ
(E.g., a beam, an electron beam, or an ultraviolet ray), a part of the radiation energy is accumulated, and a phosphor that emits stimulated light in response to the accumulated energy when irradiated with excitation light such as visible light. The stimulable phosphor is usually formed in a sheet shape and used as a stimulable phosphor sheet, and the stimulable phosphor sheets are handled one by one in a cassette.

In the above system, for example, a reading section for reading image information recorded on a stimulable phosphor sheet, and an erasure for erasing image information remaining on the stimulable phosphor sheet after a reading process is performed. And an image information reading apparatus having a section. In this image information reading apparatus, a cassette accommodating a stimulable phosphor sheet on which radiation image information of a subject is recorded by an external photographing device is inserted into a loading section. Next, with the cassette opened, the stimulable phosphor sheet is taken out of the cassette under the action of the suction mechanism, and the stimulable phosphor sheet is transported to the reading unit via the sheet transport mechanism. The stimulable phosphor sheet read by the reading unit is stored in a cassette disposed in the loading unit after the afterimage is deleted by the erasing unit.

On the other hand, in the above system, an image information reproducing apparatus for reproducing radiation image information on a photographic photosensitive material such as a photographic film is used. In this image information reproducing apparatus, the photographic photosensitive materials are taken out one by one from a magazine containing a plurality of photographic photosensitive materials under the action of a suction mechanism and transferred to a sheet body transport mechanism. Is transferred to the recording unit via the. In the recording unit, radiation image information obtained from the stimulable phosphor sheet is exposed and recorded by irradiation with laser light or the like.

[0006]

By the way, in the above-mentioned image information reading apparatus and image information reproducing apparatus, a sheet body such as a stimulable phosphor sheet or a photographic film conveyed in the apparatus body is read and recorded in a reading section or a recording section. Immediately before the sheet is conveyed, a structure is employed in which the sheet body is shifted in a direction crossing the conveying direction. For example, when the sheet is conveyed by conveyance means such as a pair of rollers, the sheet is likely to be misaligned in the width approaching direction. It is necessary to bring it.

In this type of structure, generally, a stopper for temporarily holding the leading end of the conveyed sheet body in the carrying direction at the width approach position, and the sheet body having the leading end held by the stopper are provided. And a pushing member for pushing in the width shifting direction intersecting with the transport direction to perform the width shifting. An actuator for moving the stopper forward and backward and an actuator for moving the pushing member forward and backward are separately provided, and the problem is pointed out that the structure becomes complicated and large, and the equipment cost rises. ing.

The present invention has been made to solve this kind of problem and aims to reduce the size and simplification of the entire equipment and to achieve a high precision and smooth width adjustment of the sheet body. It is an object to provide a shifting device.

[0009]

In the apparatus for shifting the width of a sheet member according to the present invention, when the sliding member moves in the width shifting direction intersecting the conveying direction of the sheet member, first, the sliding member is moved. Is engaged with the swing stopper member. For this reason, the swing stopper member swings from the outside of the sheet conveyance path to the conveyance path, and the leading end of the sheet body in the conveyance direction is once held at the width approaching position via the swing stopper member. When the slide member further moves in the width approach direction, the pushing member provided on the slide member pushes the sheet body to the width approach reference side, and the width is greater than the positioning member disposed on the width approach reference side. Perform an approach.

As described above, by simply moving the slide member forward and backward with respect to the width-shift reference side, the swing stopper member swings via the driving means provided on the slide member to move the leading end of the sheet member in the conveying direction. While holding the sheet, the sheet body is moved to the width via a pushing member provided on the slide member. Therefore, it is only necessary to provide an actuator for moving the slide member forward and backward, and a separate actuator is not required for driving the swing stopper member. This makes it possible to reduce the size and simplification of the entire apparatus, and it is extremely economical. Become.

The driving means has a columnar driving cam member provided at an end of the stopper member and abutting on a cam surface extending in the width approaching direction. Dynamic operation is reliably performed.

Further, the driving means has a spherical driving cam member abutting on the cam surface of the stopper member. Therefore, even if the spherical driving cam member is displaced in the direction of the rotation axis, the outer periphery of the driving member is provided. The surface can be reliably brought into contact with the cam surface. This allows the swing stopper member to swing smoothly and surely, prevents wear due to one-side contact with the cam surface, and effectively improves the durability of the spherical drive cam member itself.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic structural explanatory view of an image information reading apparatus 12 incorporating a sheet width adjusting apparatus 10 according to a first embodiment of the present invention.

A touch panel 14 having the functions of an operation section and a monitor is provided above the front surface (operation surface) of the image information reading device 12, and a cassette loading section 18 to which a cassette 16 is detachably mounted is provided below the touch panel 14. Can be The cassette 16 is a stimulable phosphor sheet (sheet body).
20, and an opening 24 of the housing 22.
The cassette loading portion 18 is provided with an opening / closing means (not shown) for opening and closing the lid 26.

The stimulable phosphor sheet 20 housed in the cassette 16 is taken out of the cassette loading section 18 and the stimulable phosphor sheet 20 after the reading and erasing processes described later is loaded into the cassette 16. A sheet unit 28 to be returned to the inside is provided. The single-wafer portion 28 includes a plurality of suction disks 30 communicating with a negative pressure source (not shown).

An erasing unit 34, a width shifting unit 35, and a reading unit 36 are disposed below the sheet unit 28 via a transport system 32. The transport system 32 includes a plurality of pairs of rollers 38 that form a pair, and a plurality of erasing light sources 40 that constitute the erasing unit 34 are arranged on a vertical transport path formed by the pair of rollers 38.

The storable phosphor sheet 2
A pair of rollers 42 and 44 that can be opened and closed, respectively, which conveys the sheet along a conveying path that curves 0, and a width according to the first embodiment in which the width of the stimulable phosphor sheet 20 is adjusted between the roller pairs 42, 44. A shifting device 10 is incorporated.

As shown in FIGS. 2 and 3, the width shifting device 10 includes a leading end 20 a of the stimulable phosphor sheet 20 in the transport direction.
Swing stopper member 4 that can advance onto the conveyance path of the stimulable phosphor sheet 20 in order to temporarily hold the
6, first and second positioning plates (positioning members) 48a and 48b arranged on the side of the stimulable phosphor sheet 20 on the side of the width reference P1, and on the pushing side P2 opposed to the side of the width criterion P1. A slide member 50 that is disposed so as to be capable of being disposed, and a first and a second unit that is provided on the slide member 50 and that pushes the stimulable phosphor sheet 20 toward the width shifting reference P1 to shift the width of the stimulable phosphor sheet 20. Second push plates (push members) 52a, 52b are provided on the slide member 50, and when the slide member 50 moves to the side of the width reference P1, it engages with the swing stopper member 46 and A drive unit 54 for swinging the swing stopper member 46 from outside the conveyance path of the stimulable phosphor sheet 20 onto the conveyance path.

As shown in FIGS. 2 to 4, the swing stopper member 46 has a rotating shaft 56 extending in the direction of shifting the width of the stimulable phosphor sheet 20 (the direction of arrow B).
Are integrally provided with a plurality of locking claws 58 having a predetermined width dimension and arranged in parallel in the width shifting direction. Rotating shaft 56
, A cam surface 60 is formed protruding to the opposite side of the locking claw 58 and extending in the width approaching direction, and a guide surface 62 bent at an end of the cam surface 60 is integrally provided. The swing stopper member 46 is normally disposed in the posture shown in FIG. 4 by its own weight, and the locking claw 58 is attached to the stimulable phosphor sheet 2.
0 waiting outside the transport path.

As shown in FIGS. 2 and 3, a moving means 64 for moving the slide member 50 forward and backward in the width approaching direction.
Has a motor 66, and a pulley 70 is fixed to a rotating shaft 68 of the motor 66. The pulley 72 is arranged at a predetermined distance from the pulley 70 in the width approaching direction,
A timing belt 74 is stretched over the pulleys 70 and 72. The slide member 50 is connected to an end of the timing belt 74 via a bracket (not shown) or the like.

The slide member 50 is made of a plate material, and has vertical wall portions 78a, 7b which are bent upward on both sides thereof.
8b are provided. The vertical wall portions 78a, 78b are provided with locking portions 80a, 80b so as to be bent in a direction away from each other.
Are provided, and mounting portions 82a and 82b are provided so as to bend in directions approaching each other, and square holes 84a and 84b are formed near the locking portions 80a and 80b. The support shafts 86a, 86b are provided on the vertical wall portions 78a, 78b.
Are provided on the support shafts 86a and 86b.
a and 52b are swingably mounted.

The square holes 84 are formed from the push plates 52a and 52b.
The swinging rods 88a, 88b are inserted into the swinging rods 88a, 88b, and the mounting portions 82a,
The springs 90a and 90b are bridged between the springs 82a and 82b.
The push plates 52a, 52b are provided with springs 90a, 90.
While being urged toward the side-by-side reference P1 side through the elastic force of b, it is held in the vertical posture by contacting the locking portions 80a and 80b.

A driving means 54 is provided at an end of the slide member 50. The driving means 54 includes a column 92 erected on the slide member 50, and a spherical driving cam member 94 rotatably supported on an upper portion of the column 92. The driving cam member 94 has a hemispherical outer peripheral surface 94a.

As shown in FIG. 1, the reading section 36 includes a sub-scanning transport mechanism 1 for transporting the stimulable phosphor sheet 20 taken out of the cassette 16 in the sub-scanning direction (the direction of arrow A).
00, an optical system 102 for irradiating the stimulable phosphor sheet 20 conveyed in the sub-scanning direction with a laser beam L in a main scanning direction (a direction substantially orthogonal to the sub-scanning direction), and irradiating the laser beam L And a light condensing system 104 that photoelectrically reads stimulated emission light generated from the stimulable phosphor sheet 20 by the light-emitting device.

The sub-scanning transport mechanism 100 includes first and second roller pairs 106 and 108 which are driven to rotate in synchronization with each other.
While the light condensing system 104 includes the stimulable phosphor sheet 2.
The light guide 110 includes a light guide 110 disposed along a main scanning line at a scanning position of the laser light L on the light guide 0 and a photomultiplier 112 mounted on the light guide 110.

The operation of the width adjusting device 10 according to the first embodiment thus configured will be described below in relation to the image information reading device 12 incorporating the same.

First, the stimulable phosphor sheet 20 on which radiation image information of a subject such as a human body is recorded by a photographing device (not shown) is housed in a cassette 16 in a light-shielded state to constitute the image information reading device 12. Cassette loading section 1
Set to 8. When the cassette 16 is loaded, the lid 26 of the cassette 16 is swung to a predetermined angular position by an unlocking means (not shown) provided in the cassette loading section 18, and the opening 24 is opened.

Next, the suction disk 30 is moved into the cassette 16 under the driving action of the sheet unit 28, and the stimulable phosphor sheet 20 in the cassette 16 is sucked by the suction disk 30. Further, the suction disk 30 is provided with the stimulable phosphor sheet 2.
0, the cassette 16 and the transport system 32
Side, the stimulable phosphor sheet 20
Is pinched by a pair of rollers 38 constituting the transport system 32.

At this time, the suction holding of the stimulable phosphor sheet 20 by the suction disk 30 is released. As a result, the stimulable phosphor sheet 20 is delivered to the transport system 32, and under the action of the transport system 32, the stimulable phosphor sheet 20 once passes through the erasing section 34 to the width approaching section 35. Conveyed.

In the width adjuster 35, the roller pairs 42 and 44 are separated from each other to release the nip of the stimulable phosphor sheet 20, and the moving means 64 constituting the width adjuster 10 is driven. As shown in FIGS. 2 and 3, in the moving means 64, when the pulley 70 rotates integrally with the rotation shaft 68 under the driving action of the motor 66, the timing belt 74 laid over the pulley 70 and the pulley 72. Runs around the orbit. Therefore, the slide member 50 connected to the timing belt 74 starts moving from the pushing side P2 side toward the width approaching reference P1 side (the direction of the arrow B1).

At this time, the driving means 54 is attached to the slide member 50.
Is mounted, and a radial outer peripheral surface 94 a of a driving cam member 94 constituting the driving means 54 comes into contact with a guide surface 62 provided on the swing stopper member 46. Therefore, the swing stopper member 46 swings the locking claw 58 side upward with the rotation shaft 56 as a fulcrum under the contact action between the guide surface 62 and the hemispherical outer peripheral surface 94a. When the hemispherical outer peripheral surface 94 a moves from the guide surface 62 to the cam surface 60, the locking claws 58 are arranged corresponding to the conveying path of the stimulable phosphor sheet 20. The leading end 20a of the stimulable phosphor sheet 20 in the transport direction is temporarily held (see FIGS. 5 and 6).

The slide member 50 is further moved toward the width adjustment reference P1 (in the direction of the arrow B1) via the moving means 64,
A push plate 52a disposed on the slide member 50;
52b comes into contact with one end face 20b of the stimulable phosphor sheet 20, and presses this end face 20b toward the side-by-side reference P1. Therefore, the other end face 2 of the stimulable phosphor sheet 20
0c comes into contact with the positioning plates 48a and 48b, and the stimulable phosphor sheet 20 is shifted toward the reference P1.

In this case, in the first embodiment, the swing stopper member 46 is configured to be able to advance on the conveyance path of the stimulable phosphor sheet 20, and the slide member 50 is mounted with the push-in plates 52a, 52b. It is configured to be able to move forward and backward in the width approach direction. The slide member 50 is provided with a driving means 54 for engaging with the swing stopper member 46 and forcibly swinging the swing stopper member 46 on the conveyance path of the stimulable phosphor sheet 20. .

This eliminates the need for a dedicated actuator for swinging the swing stopper member 46, and a column 92 erected on the slide member 50 and rotatably mounted on the column 92. It is only necessary to provide the driving means 54 having a simple structure and having the driving cam member 94, and the advantage that the entire structure of the width adjusting device 10 can be simplified and downsized at once can be obtained. In addition, since a dedicated actuator is not required, the entire width adjusting device 10 can be manufactured economically.

Further, the driving cam member 94 has a hemispherical outer peripheral surface 94a, and the hemispherical outer peripheral surface 94a is in contact with the cam surface 60 from the guide surface 62 of the swing stopper member 46. Accordingly, the hemispherical outer peripheral surface 94 is not particularly affected by the displacement of the drive cam member 94 in the rotation axis direction.
a is continuously contacted from the guide surface 62 to the cam surface 60 to be damaged, for example, it is prevented from being damaged by one-side contact, so that the durability of the driving cam member 94 is effectively improved. Moreover, the hemispherical outer peripheral surface 9
4a continuously and smoothly contacts from the guide surface 62 to the cam surface 60. Therefore, the swing stopper member 46 swings very smoothly, and the stimulable phosphor sheet 2
Thus, the leading end 20a in the transport direction 0 can be reliably held at the width-shifting position.

The slide members 50 are provided with push plates 52a and 52b via springs 90a and 90b so as to be swingable. Thereby, the pushing plate 52
When a and 52b press the end face 20b of the stimulable phosphor sheet 20 toward the width reference P1 (in the direction of the arrow B1), the end face 20c of the stimulable phosphor sheet 20 is positioned by the positioning plate 48.
a, 48b can be effectively absorbed, and damage to the stimulable phosphor sheet 20 can be prevented.

FIG. 7 is a partial side view of a sheet width adjusting device 120 according to a second embodiment of the present invention. Note that the same components as those of the width shifter 10 according to the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

The width shifting device 120 includes the swing stopper member 4.
Drive means 122 for swinging 6 onto the transport path from outside the transport path
The driving means 122 includes a cylindrical driving cam member 124 rotatably mounted on the upper portion of the column body 92.

In the width adjusting device 120 thus configured, when the driving means 122 moves in the width adjusting direction integrally with the slide member 50, the cylindrical outer peripheral surface 124 a of the driving cam member 124 is moved by the swing stopper member 46. From the guide surface 62 along the cam surface 60, and the swing stopper member 46
Is displaced so that the locking claw 58 is directed upward. Therefore, the same effects as in the first embodiment can be obtained, such as the necessity of a dedicated actuator, and the whole width adjustment device 120 can be economically and compactly configured.

[0040]

In the apparatus for shifting the width of a sheet member according to the present invention, a driving means is provided on a slide member having a pushing member for pushing the sheet member to the reference position of the width adjustment, and the slide member moves to the reference side of the width adjustment. At this time, the driving means is engaged with the swing stopper member, and the swing stopper member swings on the conveyance path of the sheet body, and the leading end of the sheet body in the conveyance direction is once held. This eliminates the need for a dedicated actuator for swinging the swing stopper member, effectively simplifying and reducing the size of the width adjustment device, and economically manufacturing the width adjustment device. Becomes possible.

[Brief description of the drawings]

FIG. 1 is a schematic configuration explanatory view of an image information reading device incorporating a sheet width shifting device according to a first embodiment of the present invention.

FIG. 2 is a schematic perspective explanatory view of the width shifting device.

FIG. 3 is an explanatory plan view of the width shifting device.

FIG. 4 is a partial side view of the width shifting device.

FIG. 5 is a schematic perspective explanatory view when the width shifting device is driven.

FIG. 6 is an explanatory side view of a part of the width shifting device of FIG. 5;

FIG. 7 is an explanatory side view of a part of a sheet width adjusting device according to a second embodiment of the present invention.

[Explanation of symbols]

Reference numerals 10, 120: width adjusting device 12: image information reading device 16: cassette 20: stimulable phosphor sheet 28: sheet part 32: transport system 34: erasing unit 35: width adjusting unit 36: reading unit 46: swing stopper Member 48a, 48b Positioning plate 50 Slide member 52a, 52b Push plate 54, 122 Drive means 56 Rotating shaft 58 Locking claw 60 Cam surface 62 Guide surface 64 Moving means 90a, 90b
Springs 94, 124: Drive cam member 100: Sub-scanning transport mechanism 102: Optical system 104: Condensing system 124a: Cylindrical outer peripheral surface

Claims (3)

[Claims] An apparatus for shifting the width of a sheet to be conveyed in a direction intersecting with the conveying direction, the apparatus comprising: A swing stopper member capable of advancing onto the conveyance path of the sheet member, a positioning member disposed on the reference side of the width of the sheet member, and a retractable side disposed on a pushing side opposite to the reference side of the width of the sheet member. A slide member, a push member provided on the slide member, for pushing the sheet body to the width approach reference side to shift the width of the sheet body, and a push member provided on the slide member, wherein the slide member is the width approach reference. And a driving unit that engages with the swing stopper member to swing the swing stopper member from outside the conveyance path of the sheet member onto the conveyance path when moving to the side. Width pushing apparatus of the over door body. 2. The width shifting device according to claim 1, wherein the driving means includes a cylindrical driving cam member provided at an end of the stopper member and abutting on a cam surface extending in the width shifting direction. A sheet width adjusting device characterized by the above-mentioned. 3. The width shifting device according to claim 1, wherein said driving means includes a spherical driving cam member provided at an end of said stopper member and abutting on a cam surface extending in the width shifting direction. A sheet width adjusting device characterized by the above-mentioned.