JPH02310240A - Magazine charging mechanism - Google Patents

Abstract

PURPOSE:To perform positioning of a magazine only by placing it on a loading bed from the above by providing plural sets of protrusive streaks, which restrict the displacement in a direction orthogonal to a film draw out direction of the magazine, on the loading bed in response to its size. CONSTITUTION:An accumulator unit is opened, when a magazine charger mechanism is charged with an intermediate size magazine 20, in which a roll-state film is stored, first this magazine 20 is placed on a loading bed 18 in a housing. Now when the magazine 20 is placed in such a manner that its flange parts 30a, 30b are positioned on outer sides of the second protrusive streaks 38a, 38b provided on the loading bed 18, the dimension in the width direction of a magazine main unit 28 agrees with a space between the second protrusive streaks 38a, 38b, so that the displacement in the width direction of the magazine 20 is restricted by adapting outer sides 44a, 44b of the second protrusive streaks 38a, 38b to a step difference part between the magazine main unit 28 and flange parts 30a, 30b.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magazine loading mechanism, and more specifically, to improving the operability when loading a magazine in which a photosensitive material such as a film is stored in an image processing apparatus. Related to improving magazine loading mechanism.

[Background of the Invention] In recent years, in the fields of printing and plate making, image scanning reading and recording systems have been developed to create film originals by reading the image information of originals and electrically processing them for the purpose of streamlining work processes and improving image quality. has been adopted.

This image scanning reading/recording system is basically constructed of a reading device, a control device, and an exposure device, either integrally or separately. In other words, in the reading device, a photographic original or a line drawing original is scanned with a laser beam and detected by a photomultiplier, or a CC
D (Charge Coupled Device)
The camera reads the image and converts the image information of the document into an electrical signal depending on the strength of the reflected light. Then,
The image information photoelectrically converted by the reading device is subjected to arithmetic processing in a control device to perform gradation correction, halftone separation, etc. according to plate-making conditions.

Thereafter, the image information processed by the control device is converted into an optical signal consisting of a laser beam in an exposure device, and the laser beam is irradiated onto the photosensitive material to record a desired image. After the image recording is completed, the photosensitive material is subjected to a development process to produce a final film original.

Therefore, in such an image scanning reading recording system, an exposure device that irradiates a laser beam onto a film or the like based on image information of a document to record a desired image by exposure includes, for example,
There are the following:

That is, it is of a type in which a magazine is loaded into which a roll of film is stored. In such an exposure apparatus, the film is pulled out from the magazine and sent to the exposure section. In the exposure section, for example, the film is transported in the sub-scanning direction via a sub-scanning transport means consisting of a rotatably driven drum and a nip roller that can slide into contact with the drum. A desired image is exposed and recorded on this film by main scanning with a laser beam modulated based on the correction.

Incidentally, in the above exposure apparatus, the magazine loading section is provided with a mechanism for fixing the magazine. That is, in the prior art, after a housing-shaped magazine is placed in a loading position, it is fixed with magazine holders that restrict both sides of the magazine. This kind of magazine holder is
In order to allow several types of magazines of different sizes to be attached and detached, for example, the magazine is configured so that it can be slid to come into contact with the magazine and fixed, or the fixed state of the magazine can be released.

However, if a movable mechanism is used for the magazine holder, the disadvantage is that the structure becomes complicated. Therefore, improvements have been desired from the viewpoints of operability and maintainability.

[Object of the Invention] The present invention has been made in order to overcome the above-mentioned disadvantages, and the present invention has been made by providing a protrusion on the magazine mounting table corresponding to the level difference between the magazine body and both sides of the magazine according to the size of the magazine. To provide a magazine loading mechanism in which the magazine loading operation is simple and efficient by regulating the displacement of the magazine with a protrusion, and the configuration thereof is simplified.

[Means for Achieving the Object] In order to achieve the above-mentioned object, the present invention provides a mechanism for removably loading a magazine in which a photosensitive material is stored into an image processing apparatus, wherein the magazine is mounted on an image processing apparatus. The mounting table is provided with a plurality of sets of protrusions corresponding to the size of the magazine for regulating the displacement of the magazine in a direction perpendicular to the film pull-out direction, and the protrusions are attached to the main body of the magazine and both ends thereof. The magazine is positioned by being engaged with a stepped portion of the flange portion of the magazine.

[Embodiments] Next, preferred embodiments of the magazine loading mechanism according to the present invention will be described in detail with reference to the accompanying drawings.

In FIG. 1, reference numeral 10 indicates an exposure apparatus equipped with a magazine loading mechanism according to the present embodiment, and this exposure apparatus 1
A magazine loading mechanism 12 is disposed inside the magazine 0 at the upper right in the figure.

A bent lid 16 is attached to the housing 14 of the exposure apparatus 10 via a hinge 15 on the upper right side in the figure so as to be openable and closable. Inside the housing 14, a mounting table 18 that constitutes the magazine loading mechanism 12 is provided.
is installed at a predetermined position via a mounting means (not shown).

A magazine 20 containing an unexposed film F wound in a roll is removably mounted on the mounting table 18. A pressing member 24 is attached to the lid 16 via a holding member 22, and in this case, the loaded magazine 20 can be detached from the mounting table 18 by opening the lid 16.

Here, based on FIG. 2, the mounting table 18 and the magazine 20 are
Each will be explained in detail.

First, the magazine 20 has a housing shape that is elongated in the axial direction of the roll of film F, and includes a magazine main body 28 in which an ejection opening 26 is formed for pulling out the film F stored therein; Flange parts 3 at both ends
0a and 30b. The step t between the magazine main body 28 and the flange portion 30a130b is provided at least to the extent of scattering. As will be described later, in order to correspond to this step t,
This is because the mounting table 18 is provided with a protrusion that restricts the movement of the magazine 20. Note that several types of such magazines 20 are prepared depending on the size of the film width. In that case, the magazines have the same configuration, except for the length in the width direction. In this embodiment, large,
Magazines 20 of three sizes, medium and small, are prepared.

Next, the mounting table 18 on which such a magazine 20 is mounted and positioned will be explained.

This mounting table 18 includes a plate-shaped table portion 32 and side plate portions 34 a 134 b erected along three sides of this table portion 32 .
, 34C. The platform portion 32 is provided with protrusions that abut against the flange portions 30a, 30b of the magazine 20 to restrict movement in the width direction so that magazines 20 of different sizes can be positioned. That is, the base portion 32
A pair of first protrusions 35a, 36b having a length approximately equal to the width of the magazine 20 are provided at a predetermined interval on both ends of the magazine 20 in the width direction, and a pair of second protrusions 35a and 36b are provided on the inside thereof. 38a,
38b is provided. Further, a base portion 38C is provided between the second protrusions 38a and 38b. In this case, the first protrusion 3
The flange portions 30a, 30b of the magazine 20 having the largest size and the stepped portion of the magazine body 28 are arranged so that they contact the outer side surfaces 40a, 40b of the 6a136b, and
Inner side surfaces 42a, 42 of the first protrusions 36a, 36b
7 rungs 30 of the medium size magazine 20 are shown in b.
The first protrusion 36a13 so that a and 30b are in contact with each other
An interval of 6b is set. The second protrusions 38a, 38b are spaced so that their outer side surfaces 44a, 44b are in contact with the flange portions 30a, 30b of the medium-sized magazine 20 and the stepped portion of the magazine body 28. Similarly, the distance between the side surfaces 44C144d of the platform 38C is set such that the flanges 30a and 30b of the smallest magazine 20 come into contact with each other.

The heights of the first protrusions 36a, 36b and the second protrusions 38a, 38b are set to be approximately equal to the step t between the main body 28 of the magazine 20 and the flange portion 30a. Note that bars 4 are provided at the ends of the side plate portions 34a and 34b of such a mounting table 18.
6 is installed, and this bar 46 restricts the movement of the magazine 20 in the film withdrawal direction.

Next, in FIG. 1, the film F pulled out from the film outlet 26 of the magazine 20 is guided by guide plates 48a and 48a arranged at regular intervals to form a transport path.
8b to the exposure section 50.

The exposure section 50 basically includes a large diameter drum 52 that is rotatably driven, and a drum 52 that is connected to the drum 5 through an elastic body (not shown).
The film F is main-scanned by a laser beam between the nip rollers 54a and 54b, and is also sent in the sub-scanning direction by the drum 52 and the nip roller 54a154b.

Next, a pair of conveyance rollers 56.58 is disposed downstream of the drum 52 and the nip roller 54a154b, and between each pair of conveyance rollers 56.58, the exposed film F is held for a predetermined length. A pair of cutter blades 60a and 60b are provided for cutting into pieces. The cut film F is sent to the developing device 64 via the pair of conveying rollers 58 from a film outlet 62 defined in the housing I4.

On the other hand, a light beam scanning section 66 for recording image information on the film F is provided below the drum 52.

The light beam scanning section 66 includes laser light sources 68a and 68 that output recording laser light L1 and synchronization laser light L2.
The laser light sources 68a and 68b are substantially arranged on a surface plate 70 fixed to the housing 14 side. On the laser light output side of the laser light m, 68a, a mirror 72 for scanning the recording laser light L1 onto the film F, a deflector, such as a galvanometer mirror 74,
A scanning lens 76 such as a θ lens and a mirror 78 are similarly mounted on the surface plate 70.On the other hand, the synchronizing laser beam L2 from the laser light source 68b is transmitted to the mirror 72, galvanometer mirror 74, etc. , a scanning lens 76, and a mirror 78 to a mirror 80. Here, in the direction in which the synchronizing laser beam L20 is reflected by the mirror 80, a reference grating plate 82 provided with a transmissive grid is disposed.
A condensing bar 84 is arranged close to the back side of the reference grating plate 82 . Note that a photodetector (not shown) is attached to both ends of the condensing bar 84, and this photodetector directs the synchronizing laser beam L2 transmitted through the reference grating plate 82 to the condensing bar 84.
Detected as a pulse signal via.

The magazine loading mechanism according to this embodiment and the exposure apparatus 10 to which the mechanism is applied are basically constructed as described above, and the functions and effects thereof will be explained next.

First, the lid 16 is opened, and the magazine 20 containing the roll-shaped film F is loaded into the magazine loading mechanism 12. In this case, the size is a medium-sized magazine 20
We will explain the case of loading. In FIG. 2, this magazine 20 is placed on the mounting table 18 inside the housing 14. As shown in FIG. At that time, the flange portion 30a of the magazine 20,
30b is placed on the outside of the second protrusions 38a, 38b, the dimension in the width direction of the magazine body 28 and the second
Since the intervals between the protrusions 38a and 38b match,
The displacement of the magazine 20 in the width direction is caused by the second protrusions 38a and 38b.
The outer surfaces 44a and 44b of the magazine body 28 and the flange portions 30a and 30b are regulated by coming into contact with a stepped portion. Further, since the movement of the magazine 20 in the film drawing direction is regulated by the bar 46 and the side plate portion 34c, the magazine 20 is positioned on the mounting table 18.

Incidentally, when loading magazines 20 of different sizes, the same procedure as above is performed. For example, FIG. 3a shows a state where the largest size magazine 20 is positioned on the mounting table 18.

The outer side surfaces 40a, 40b of the first protrusions 36a, 36b abut against the step portion between the magazine body 28 and the seven flange portions 30a, 30b, thereby restricting movement of the magazine in the width direction. In the case of the smallest magazine 20, as shown in FIG.
4d contacts the stepped portion between the magazine body 28 and the flange portions 30a, 30b to restrict displacement of the magazine 20.

In this way, magazines 20 of any size can be easily positioned on the mounting table 18 by simply placing them from above.

Next, the end of the film F is pulled out from the outlet 26, passed between the guide plates 48a and 48b, and then passed between the drum 52 and the nip rollers 54a and 54b that constitute the exposure section 50, as shown in FIG. The film F is held between the transport roller pair 56 and the transport roller pair 56.

Then, the lid 16 is closed to the housing 14.

As a result, the pressing member 24 comes into pressure contact with the magazine 20, so that the magazine 20 is completely fixed on the mounting table 18. Thereafter, the drum 52 is driven to rotate in the direction of the arrow. Therefore, the film F is sent out from the magazine 20 while being guided by the guide plates 48a and 48b.

At this time, the light beam scanning section 66 is driven. That is,
Laser light L1 derived from laser light sources 68a and 68b
and L2 are reflected by a mirror 72 to reach a galvanometer mirror 74, and this galvanometer mirror 74
The laser beams L+ and L2 are deflected under the oscillating motion. Further, the laser beam L1 is irradiated onto the film F from between the nip rollers 54a and 54b via the scanning lens 76 and the mirror 78. On the other hand, the laser beam L2 is transmitted to the mirror 8.
After being reflected at 0, it passes through the reference grating plate 82 to the focusing bar 8.
4 and is detected as a pulse signal by a photodetector (not shown). This pulse signal is multiplied to a predetermined frequency and becomes a synchronization signal.

In this way, the laser beam L1 is main-scanned on the film F, and the film F is rotated by the drum 52.
The film F is conveyed in the sub-scanning direction via nip rollers 54a and 54b that are in sliding contact with the film F, and as a result, a desired image is exposed and recorded on the film F.

Next, another embodiment of the magazine loading mechanism according to the present invention is shown in FIG. 4aSb. In this case, the first real M
Components that are the same as those in the fU aspect are given the same reference numerals, and detailed description thereof will be omitted.

In FIG. 4a, the mounting table 86 constituting the magazine loading mechanism has both sides 40b and 42b of the first protrusion 36b.
Two plate springs 88 are fixed to each of the plate springs 88 as pressing members, and the plate springs 88 elastically urge the magazine 20 to abut against the protrusion 36a on the opposite side, thereby improving positioning accuracy. Instead of the leaf spring 88, a bushing member 90 biased by a spring may be used, as shown in FIG.

[Effects of the Invention] As described above, according to the present invention, since the positions of magazines of respective sizes that come into contact with the widthwise side surfaces are regulated on the top surface of the mounting table in accordance with the magazine sizes, Its position can be determined simply by placing it on the mounting table from above, and the operation is simple and the configuration can be greatly simplified.

Further, by providing a pressing member such as a leaf spring on the side surface of the protrusion, it is possible to further improve the positioning accuracy of the magazine.

Although the present invention has been described above with reference to preferred embodiments, the present invention is not limited to these embodiments.
Of course, various improvements and changes in design are possible without departing from the gist of the present invention.

[Brief explanation of the drawing]

Fig. 1 is a configuration explanatory diagram of an exposure apparatus to which the magazine loading mechanism according to the present invention is applied, Fig. 2 is a perspective view of the magazine loading mechanism according to the present invention, and Fig. 3 aSb is a diagram showing the size of the magazine loading mechanism according to the present invention. FIGS. 4a and 4b are enlarged perspective views of main parts of a magazine loading mechanism according to another embodiment. 10... Exposure device 18... Mounting table 20
... Magazine 28 ... Magazine body 3
0a, 30b...flange parts 36a, 36b, 38a, 38b...projection 52...
drum

Claims (1)

[Claims] (1) A mechanism for removably loading a magazine in which a photosensitive material is stored into an image processing device, including a mounting table on which the magazine is placed, and the mounting table is arranged perpendicularly to the film pulling direction of the magazine. A plurality of sets of protrusions are provided corresponding to the size of the magazine, and the protrusions are engaged with stepped portions of the main body of the magazine and flanges at both ends thereof to position the magazine. A magazine loading mechanism characterized by the following.