JPS6371061A - Picture recording device - Google Patents

Abstract

PURPOSE:To effectively use a film and to reduce a space, occupied by the film, as much as possible, by displaceably providing a moving roller between plural secured guide rollers. CONSTITUTION:A film F leaves a looplike slack between a first roller pair 36 and a conveying mechanism 56, and the tip part, where recording of a picture is complete, is suspended along a guide plate 84. Thus, an unnecessary external force, e.g. tens ion on the first roller pair 36, is prevented from being exerted on the film F, the film F is smoothly conveyed in a sub-scanning direction in a state to be nipped by a drum 58 and nip rollers 60a and 60b, and acurate picture recording is effected through a scanning recording part 62. By displacing moving rollers 32 and 34 by a given amount through the working of a roller displacing means, the length of a conveyance passage, formed with the moving rollers 32 and 34 and guide rollers 30a or 30c can be regulated to a proper value, and no influence is exercised by a fluctuation in a return amount of the film F.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an image recording device, and more particularly, the present invention relates to an image recording device, in which an image recording carrier such as a long photosensitive material stored in a magazine is nipped and conveyed by a rotating drum and a nip roller,
At this time, the image is effectively recorded on the image recording carrier by preventing the influence of unnecessary external force, and the drum is once rotated in the opposite direction in order to convey the image recording carrier to the next step. When returning the recording carrier to the magazine side, a conveying path is formed by a fixed guide roller and a movable roller to force the image recording carrier to pass through the conveying path, thereby preventing slack from occurring in the conveying path. It also relates to an image recording apparatus configured to avoid this problem and further to rotate the drum in reverse again to send the image recording carrier to the next step.

In recent years, image scanning recording systems have been adopted in the fields of printing and plate making to create film master plates by reading image information drawn on manuscripts and electrically processing them with the aim of streamlining work processes and improving image quality. It has come to be.

This image scanning/reading/recording system is basically constructed of an image reading device, a control device, and an image recording device, either integrally or separately. In other words, in an image reading device, a reflective photo original or line drawing original is scanned with a light beam and detected by a photomultiplier, or a COD (Charge coupled de
vice) A camera reads the image and once converts the image information of the document into an electrical signal depending on the intensity of reflected light.

Next, the image information photoelectrically converted by the image reading device is subjected to arithmetic processing in a control device to perform gradation correction, halftone separation, etc. according to the plate-making conditions. Then, the image information processed by the control device is converted into an optical signal made of laser light in an image recording device, and the laser light is irradiated onto an image recording carrier such as a photosensitive material to record a desired image. Further, after the image recording is completed, the image recording carrier is subjected to a development process, and is finally used as a film original for printing or the like.

Therefore, in such an image scanning reading recording system, an image recording 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 is specifically configured as follows. .

That is, a magazine that stores a long film wound into a roll is loaded into an image recording device, and this film is
First, the film is sandwiched between a pair of rollers, and the pair of rollers are driven to rotate to feed the film to an image scanning section. In the image scanning section, the film is transported in the sub-scanning direction via a rotatably driven drum and a nip roller that can slide into contact with the drum, and a laser beam modulated based on the gradation correction performed by the aforementioned control device. By main-scanning light onto the transported film, a desired image is exposed and recorded on the film. Next, the film is automatically cut to a desired length by a cutter provided in the image recording device, and then sent to, for example, a developing device via a conveyance system.

In this case, in the scanning section, the film must be conveyed extremely accurately and smoothly in the sub-scanning direction. In other words, if an external force or the like acts on the film being scanned with a laser beam and the film is not transported smoothly in the sub-scanning direction, the laser beam will deviate from the desired position on the film, and the film will eventually be damaged. This is because accurate image recording would not be possible and it would be impossible to use it as a film original.

Therefore, in order to prevent unnecessary external forces from acting on the film being conveyed in the sub-scanning direction, in the image recording apparatus, the film is In addition to providing a predetermined slack, the end of the film that has been scanned and recorded is suspended via a guide plate that is oriented in the vertical direction, thereby avoiding load fluctuations caused by the pair of rollers. The film is nipped and conveyed only by a drum and a nip roller.

After exposing and recording a predetermined image on the film, the drum is rotated in the opposite direction to sandwich the leading edge of the film between the drum and the nip roller again, and the drum is further rotated in the opposite direction. This film is conveyed to the cutter side and cut, and is also sent to a developing device via a conveyance system.

However, in this case, when the leading edge of the film is returned to the drum side after exposure recording of a predetermined image, the film pulled out from the magazine is not stored in the magazine again but is connected to the magazine and the rollers. There will be a loop-like slack between the two. Therefore, in the image recording device, in particular,
It has been pointed out that a space must be provided between the magazine and the pair of rollers to allow the film to loosen, resulting in an inconvenience that the image recording apparatus itself becomes larger.

Moreover, when the film loosens between the magazine and the pair of rollers, the film does not always loosen in a suitable loop shape, and for example, the film may be bent and scratches may occur. There is a possibility that In particular, if the photosensitive surface of the film is scratched, the film cannot be used for image recording work, making it extremely uneconomical and making it difficult to perform the image recording work efficiently. The shortcomings are exposed.

The present invention has been made in order to overcome the above-mentioned disadvantages, and includes a guide means consisting of a fixed guide roller and a movable roller capable of descending movement between the magazine and the pair of rollers for conveying the image recording carrier. When the film is returned after image recording is completed, the moving roller and the guide roller form a transport path and the film is forced to pass through the transport path, thereby preventing the film from being bent and damaged. Therefore, this film can be used effectively, and the space occupied by the film in the device can be minimized, thereby making it possible to easily downsize the device. The purpose of the present invention is to provide an image recording device with a

In order to achieve the above object, the present invention includes a first conveyance system that feeds out a long image recording carrier from a loading section in the sub-scanning direction; a scanning unit that exposes and records images and the like by irradiating a light beam in a main scanning direction that is substantially orthogonal to the sub-scanning direction; a second transport system that transports the image recording carrier to the next step after the image recording is completed; an image recording carrier guide means disposed between the loading section and the first conveyance system and comprising a plurality of fixed guide rollers and one or more movable rollers displaceably disposed between the respective guide rollers; The image recording carrier inserted between the guide roller and the moving roller is relaxed between the first conveyance system and the scanning section, and the end after the image is recorded hangs down by its own weight, thereby scanning recording. After performing this, when returning the end of the image recording carrier to the scanning unit side, the guide means is driven to displace the moving roller so as to pass between the guide rollers, and the moving roller and the guide roller are moved. The image recording carrier is forcibly passed through the conveying path to avoid loosening thereof, and the image recording carrier is then transferred to the second conveying system via the first conveying system and the scanning section.
It is characterized in that it is configured to be transported to the transport system side and sent out to the next process under the action of the second transport system.

Next, preferred embodiments of the image recording apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

In FIG. 1, reference numeral 10 indicates an image recording apparatus of this embodiment. In this case, the image recording device 10 is configured separately from an image reading device and a control device (not shown), but an image scanning reading recording system in which this image recording device is integrated with the image reading device and control device Of course, it is also possible to adopt it.

A bent-shaped lid 16 is attached to the housing 12 constituting the image recording apparatus 10 via a hinge 14 on the upper right side in the figure so as to be openable and closable. A magazine loading section 20 is provided in the chamber 18 of the image recording device 10.
is a plurality of pedestals 22a to 22 provided in this chamber 18.
c and a pressing member 24 fixed to the lid 16. Therefore, when the lid 16 is opened, the magazine 26 stored in the magazine loading section 20 can be freely attached to and removed from the magazine loading section 20.

A long unexposed film F wound into a roll is stored in the magazine 26, and the end of the film F pulled out from the film outlet 28 of the magazine 26 is connected to a guide provided in the chamber 18. Fixed guide rollers 30a to 30c and moving rollers 32.3 constituting the means 29
4 and is held between the first pair of rollers 36.

That is, a first guide roller 30a is disposed close to the film outlet 28 of the magazine 26, and a second guide roller 30b and a third guide roller 30c are disposed at a predetermined distance from the first guide roller 30a. is provided.

In this case, one end of the first to third guide rollers 30a to 30c is supported by a wall plate 38 erected within the chamber 18, as shown in FIG. On the other hand, the respective guide rollers 30a and 30b and the guide rollers 30b and 3
The moving rollers 32 and 34 disposed between 0c and 0c have their axes 32 and 34 inserted into elongated holes 40a and 40b disposed in the wall plate 38 parallel to the magazine 26 and inclined with respect to the vertical direction.
a, 34a are fitted together, and the shafts 32a, 34a are engaged with the roller displacement means 42.

That is, the roller displacement means 42 includes a rotational drive source 44, which is fixed to the wall plate 38, and a rotational drive shaft 46 of the rotational drive source 44 includes a pulley 4.
8 is attached to the shaft. The outer peripheral surface of the pulley 48 has a circumferential surface. a4aa is formed, and one end of the wire 50 is wound and engaged in this circumferential groove 48a, and the wire 50
The other end is fixed within the chamber 18. A pulley 5 is attached to the shaft 32a, 34a of each moving roller 32, 34.
2.54 is pivoted and formed on the outer peripheral surface of the pulley 52.54. ! ! A wire 50 is fitted to #52a and #54a to support the moving rollers 32 and 34. In this case, the wire 50 is not limited to a single wire-like wire, but also includes wire ropes strung together into a rope shape, and the rotation of the rotational drive source 44 is driven by a moving roller via a pulley 48. Any means may be used as long as it can be transmitted to 32.34.

Note that the first to third guide rollers 30a to 30c
The other end side is similarly temporarily supported by a wall (not shown).
Further, at the other end of the moving rollers 32 and 34, a not-shown roller displacement means configured in the same manner as the roller displacement means 42 described above is provided.

Therefore, a transport mechanism 56 is disposed close to the tenth pair 36. The conveyance mechanism 56 basically includes a rotationally driven large-diameter drum 58 and nip rollers 60a, 60b that are in sliding contact with the drum 58, and the nip rollers 5Qa, 60b are configured to be separable from the drum 58. ing.

Next, a scanning recording section 62 is arranged below the transport mechanism 56. The scanning recording section 62 includes a laser light source 64, and a mirror 6 is provided on the laser light output side of the laser light source 64 for scanning one laser light 66a onto the film F.
8. Deflector, e.g. galvanometer mirror 70, fθ
A scanning lens 72, such as a lens, and a mirror 74 are provided. Furthermore, the other laser beam 66b is simultaneously derived from the laser light source 64, and this laser beam 66b is reflected by the mirror 76 via the aforementioned mirror 68, galvanometer mirror 70, scanning lens 72) mirror 74, and then
The laser beam is introduced into the laser beam position detection means 78. In this case, the laser beam position detection means 78 includes a grid 80 in which slits (not shown) are formed and an encoder 82 for detecting the laser beam 66b that has passed through the grid 80.

On the other hand, a relatively long guide plate 84 is disposed close to the transport mechanism 56 so as to be curved and directed vertically downward, and above the guide plate 84 is a movable type having a bent shape. A guide plate 86 is provided. Further, a short guide plate 88 is provided above the guide plate 86, and a cutter means 90 is provided near the guide plate 86.88.
will be placed. The cuff means 90 is comprised of a first blade part 94 that rotates about a shaft 92 and a fixed second blade part 96. A guide plate 98 is provided below the first blade portion 94, and a second roller pair 100 and a third roller pair 102 are disposed adjacent to the guide plate 98 with a predetermined distance apart, Guide plates 106a, 106b and 108a, 108b are provided between each roller pair 100 and 102 and between the 30th roller pair 102 and the film outlet 104 of the housing 12, respectively.

A developing device 110 is installed in parallel with the image recording device 10, and the film F is conveyed into the developing device 110 through a film outlet 104, where a predetermined developing process is performed. Become.

The image recording apparatus according to this embodiment is basically constructed as described above, and its operation and effects will be explained next.

First, the lid 16 is closed via the hinge 14, and the magazine 26 is stored in the magazine loading section 20. The magazine 2
A long film F is wound into a roll and stored in the interior of the film 6, and the end portion thereof is pulled out from the opening 28 and attached to each of the guide rollers 30a to 30c and the moving roller 32.3.
4, and then held between the 10th pair 36.

Next, when the lid 16 is closed and the image recording apparatus 10 is driven to rotate the tenth pair 36, the film F held therebetween is conveyed to the conveyance mechanism 56 side. Therefore, the nip rollers 60a, 60b are separated from the drum 58, and the film F, which is conveyed via the tenth roller pair 36, is separated from the nip rollers 60a, 60b.
b and the drum 58. Furthermore, the nip rollers 60a and 60b are displaced toward the drum 58 side to nip the film F, and the film F is sent out by a predetermined length toward the conveyance mechanism 56 side under the action of the tenth roller pair 36. As shown in FIG. 1, after providing a loop-shaped slack, the drum 58 is rotationally driven in the direction of the arrow to move the film F in the sub-scanning direction (direction of arrow A).
Transport to.

At this time, the scanning recording section 62 is driven. That is, laser beams 66a and 66b derived from the laser light source 64
is reflected by a mirror 68 to reach a galvanometer mirror 70, and the laser beams 66a and 66b are deflected under the swinging action of the galvanometer mirror 70. Further, one of the laser beams 66a is irradiated onto the film F from between the respective nip rollers 60a and 60b via the scanning lens 72 and the mirror 74, and the other laser beam 66b is reflected by the mirror 76, and then the grid 80 is The encoder 82 detects that the laser light 66a irradiated onto the film F has reached a desired position.

In this way, the laser beam 66a is irradiated onto the film F in the main scanning direction, and the film F is moved between the drum 58 which is rotationally driven and the nip rollers 60a and 60 which are in sliding contact with the drum 58.
As a result, the laser beam 66a records a desired image on the film F by exposure.

In this case, the film F is connected to the tenth pair 36 and the transport mechanism 5.
As shown in FIG. 1, a loop-shaped slack is provided between the guide plate 6 and the guide plate 84, and the distal end portion of which the image has been recorded is allowed to hang down along the guide plate 84. Therefore, unnecessary external forces such as the tension of the tenth roller pair 36 are not applied to the film F, and the eight film F is held between the drum 58 and the nip rollers 60a and 60b and smoothly moves in the sub-scanning direction. The image is conveyed and accurate image recording is performed via the scanning recording section 62.

After exposing and recording a predetermined image on the film F via the scanning recording section 62 and the transport mechanism 56, the drum 58 and the tenth
- The front end of the film F is returned to the drum 58 side by a predetermined amount by rotating the pair 36 in the opposite direction to that described above. This is to cut the film F on which the image has been recorded into a predetermined length. That is, the drum 58 and the 10th-
When the la pair 36 is rotated in the opposite direction to the above, the film F
The tip of the film F is displaced toward the nip roller 60b, and the tenth roller pair 36 and the magazine 26 are attached to the film F.
There is a gap between the two. Therefore, as shown in FIG. 2, when the rotary drive source 44 constituting the roller displacement means 42 is driven to rotate the rotary drive shaft 46 in the direction of the arrow, the pulley 48 pivoted thereon also moves in the direction of the arrow. Rotate to . Therefore, the wire 50 wound around the pulley 48 is let out from the pulley 48, and the wire 50 is unwound from the pulley 48.
The respective pulley 52.54 which is engaged at zero ends up being lowered by the weight of the respective moving roller 32.34. At this time, the shafts 32a, 34a of the moving rollers 32, 34 are fitted into the long holes 40a, 40b of the wall plate 38, and as the wire 50 is loosened, the moving rollers 32, 34 are oriented in the vertical direction. Then fall down on an incline. In this case, the moving rollers 32 are fixed guide rollers 3Qa, 30
Since the other moving roller 34 passes between guide rollers 30b and 300 and descends, as shown in FIG. 29, it passes through two loop-shaped conveyance paths extending downward between the magazine 26 and the tenth pair 36.

In this way, between the magazine 26 and the tenth roller pair 36, the guide rollers 30a to 30G and the moving rollers 32, 34
In order to forcibly guide the film in a predetermined direction via the magazine 26 and the tenth pair 36,
It is possible to avoid the inconvenience of bending the film F and causing damage, which would occur when the film F is freely loosened between the two, and the film F can be used effectively. Become.

Moreover, by displacing each of the moving rollers 32, 34 by a predetermined amount via the roller displacement means 42, the moving rollers 32, 34
．． 34 and the guide rollers 30a to 30c, the length of the conveyance path formed by the guide rollers 30a to 30c can be suitably adjusted.
It becomes possible to guide effectively. In addition, as shown in FIG. 1, at the upper right corner of the image recording device 10,
There is no need to provide a relatively large space for loosening the film F as in the conventional case, and as a result, the image recording apparatus 10 can be easily miniaturized.

Next, when the leading end of the film F is sandwiched between the drum 58 and the nip roller 60b, the guide plate 86 swings the leading end downward, and the leading end is displaced from the solid line to the position indicated by the broken line in FIG. . Further, the drum 58 and the roller pair 36 rotate again in the direction shown by the arrow, and the rotational drive shaft 46 is rotated in the direction opposite to the arrow in FIG. Rotate in the direction.

For this reason, the pulley 48 that is pivotally attached to the rotational drive shaft 46
rotates in the opposite direction to the arrow, and the circumferential groove 48 of this pulley 48
By winding the wire 50 in a, the pulleys 52,54 carried on said wire 50 are raised. Therefore, each moving roller 3 on which said pulley 52, 54 is mounted
2.34 is guided by the elongated holes 40a, 40b of the wall plate 38 and rises, releasing the pressing action on the film F (see Figure 3).

As a result, the film F is attached to the drum 58 and the tenth pair 36.
Under the rotational action of
It is conveyed from the rubber pair 102 to the outlet 104, and on the way, it is cut into a desired length via the cuff means 90. That is, the movable first blade part 94 is connected to the shaft 92.
By rotationally driving the first blade part 9
4 and the fixed second blade part 96 cut the film F.

The cut film F is carried into the developing device 110 through the outlet 104, and after being subjected to a predetermined developing process through the developing device 110, it is used as a film original for various uses.

As described above, according to the present invention, it is possible to smoothly transport an image recording carrier such as a film in the sub-scanning direction without any unnecessary external force acting on the image recording carrier such as a film during scanning, and to transfer the image etc. after exposure recording is completed. When the image recording carrier is once returned to the magazine side, the image recording carrier is forcibly passed through a variable conveyance path formed by a fixed guide roller and a moving roller, and then the image recording carrier is, for example, , cutter means, etc. to the next process.

For this reason, in particular when returning the image record carrier to the magazine,
There is no inconvenience such as the image recording carrier being bent and damaged near the magazine, making it possible to use the image recording carrier effectively and achieving accurate image recording work. . Moreover, unlike the conventional method, a relatively large space for loosening the image recording carrier is not required, and as a result, the entire image recording apparatus can be easily miniaturized.

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 schematic explanatory diagram of an image recording device according to the present invention, FIG. 2 is a partially omitted perspective view of the image recording device according to the present invention, and FIG. 3 a and b are explanatory diagrams of the operation of the inventive device. It is. 10... Image recording device 12... Housing 18.
...Chamber 20...Magazine loading section 26...Magazine
29... Guide means 30a to 30c... Guide roller 32. 34... Moving roller 42... Roller displacement means 44... Rotation drive source 48... Pulley 50... Wire 52.54. ...Pulley 56...Transportation mechanism 58...Drums 60a, 60b...Nip roller 62...Scanning recording section 90...Cutter means 100.102...Roller pair FIG, 3 (b) 8

Claims (3)

[Claims] (1) A first conveyance system that feeds out a long image recording carrier from a loading section in the sub-scanning direction; and a main scanning system that feeds out the image recording carrier through the first conveyance system in a main scanning direction that is substantially orthogonal to the sub-scanning direction. a scanning unit that exposes and records an image or the like by irradiating a light beam in a direction; a second transport system that transports the image recording carrier to the next step after the image recording is completed; the loading unit and the first transport system; an image recording carrier guide means comprising a plurality of fixed guide rollers and one or more movable rollers disposed displaceably between the respective guide rollers; The image recording carrier inserted therebetween is relaxed between the first conveyance system and the scanning section, and scanning recording is performed so that the end after the image is recorded hangs down by its own weight, and then the image recording carrier is When returning the end portion to the scanning unit side, the guide means is driven to displace the movable roller so as to pass between the guide rollers, and the movable roller and the guide roller form a conveyance path to record the image. The carrier is forcibly passed through the conveyance path to avoid loosening thereof, and further, the image recording carrier is conveyed to the second conveyance system side via the first conveyance system and the scanning section, and Second
An image recording device characterized in that it is configured to be sent to the next process under the action of a conveyance system. (2) In the apparatus according to claim 1, the image recording carrier guiding means substantially includes a plurality of fixed guide rollers, and a guide means located above the guide rollers and extending between the guide rollers. The image recording carrier is inserted between the guide roller and the moving roller; An image recording apparatus in which each of the moving rollers is dropped through a guide roller to form a variable conveyance path with the moving roller and the guide roller. (3) In the apparatus according to claim 2, the roller displacing means includes a rotational drive source, one end of a wire is wound around and engaged with a first pulley that engages with the rotational drive source, and the roller displacing means includes a rotational drive source. While fixing the other end, a second pulley attached to the moving roller is engaged with the wire to hold the moving roller, and the first pulley is rotated in one direction under the action of the rotational drive source. The first pulley is rotated in the other direction under the action of the rotary drive source to take up the wire and engage it. An image recording device that pulls up moving rollers that meet each other.