JPS5986360A - Laser recorder - Google Patents

Abstract

PURPOSE:To prevent a failure in case of the removal of a winding magazine by releasing the engagement between the winding magazine and a laser device after a recording medium is cut by a cut mechanism. CONSTITUTION:When the tip of the recording medium 11 passes through a recording start position A, carrying is stopped and picture information is recorded by a laser beam LB. In depressing a cut button, a driving roll 19 in a copy machine 10 and a winding roll 13a are driven for a prescribed time, the recording part on the medium 11 is wound into the magazine 13 and the medium 11 is cut. Then, a slide lever 28 is made slidable, allowing to remove the magazine 13. In depressing a slide lever 27, a light shield sponge contacts a light shield plate for attaining the light shield of the machine 10. Since a light shield sponge contacts a guide plate 22, the light of the magazine 13 is shielded. Thus, the removal of the magazine 13 is performed in a bright room.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a laser recording device in which a take-up magazine cannot be removed until after the recording medium has been cut.

Among these laser recording devices, recently, a laser beam is used to record image information on a photosensitive or heat-sensitive recording medium (hereinafter simply referred to as a "recording medium") such as film or photographic paper, and the sound of this recording medium is then developed. A device for producing a printing original plate, or a so-called block copy, has been considered. Such a device is called a laser phototypesetting machine, and requires printing accuracy and reliable operation. FIG. 1 shows a schematic configuration of a laser phototypesetting machine, and generally a roll-shaped recording medium is used. In the figure, 1 is a laser device that generates a laser beam, such as a He-Ne laser, 2 mirrors, 3 is a lens that narrows down the beam diameter, 4 is an acousto-optic modulator, and 5 is based on the Beano diameter. 6 is a driver that drives the acousto-optic modulator 4 with the image information signal S; 7 is a beam expander that expands the diameter of the laser beam; 8f'i is a rotating device that rotates at high speed to scan the beam on the photoconductor; A polygon mirror (usually called a polygon), 9 is an fθ lens (f is the focal length of the lens) that forms an image at a distance proportional to the angle of incidence θ with respect to the optical axis, and 10 shown by a chain line represents these optical elements. This is the main body of a laser phototypesetting machine that incorporates a scanning mechanism and a feeding mechanism for a recording medium 11, which will be described later. 12 indicates that the recording medium 11 is (l roller 1
A supply magazine 2a is wound and stored, and 13 is a take-up magazine for winding the recorded recording medium 1]+s around a take-up roller 13a.

This optical scanning system of the laser phototypesetting machine itself is well known, so a detailed explanation will be omitted, but the recording medium 1 in the supply magazine 12 is conveyed in the direction of the arrow, and the recording medium 11 is at a predetermined position in the feeding mechanism. It is irradiated with a laser beam from an optical scanning mechanism of the main body 10, and image information (for example, characters) is drawn. That is, the laser beam modulated by the image information signal S is reflected by each mirror surface of the rotating polygon mirror 8, passes through the fθ lens 9, and forms an image of image information (visual image or latent image) on the recording medium 1. form. In this case, the laser beam is scanned in the horizontal direction (main scanning direction) on the recording medium 11 while being reflected by each mirror surface of the rotating polygon mirror 8. The recorded recording medium 1] is transported and wound into the remagazine 13.

By the way, when a photosensitive recording medium is used,
The feeding machine 12 is usually set in a predetermined position in the main body 10 of the laser phototypesetting machine in a dark place such as a darkroom. Thereafter, the recording heat body is automatically transported to the recording position building by the loading mechanism.

The recording preparation is now complete, and the recording operation is started by pressing the record button.

By the way, when information has been recorded on the recording medium, the gap between the recorded area and the following unrecorded area is cut, the recorded area is rolled into the winding magazine, and the winding magazine is removed from the phototypesetting machine body, and then the recording medium is removed. However, if you remove the take-up magazine for fun before cutting the recording medium, the recording medium that was once rolled up inside the take-up magazine will be pulled out of the magazine. There is a problem that a part of the recording medium containing the recording f41s is exposed to light from the outside 911.

The present invention has been made in consideration of the above points, and is a laser recording method in which image information is recorded by a laser beam on a roll-shaped recording medium fed from a supply magazine, and then the vaginal recording medium is wound into a winding magazine. In order to ensure that the take-up magazine cannot be removed until after the recording medium has been cut, the device uses a cutting mechanism that cuts the recording medium to remove the take-up magazine and laser recording after cutting the recording medium. The engagement with the main body of the device is released.

The present invention will be explained below based on the drawings.

FIG. 2 shows a feeding mechanism for a roll recording medium of a laser phototypesetting machine according to the present invention, and the same reference numerals as in FIG. 11 indicate the same components. After the supply magazine 12 is set in the autoloading mechanism, the recording medium 11 in the supply magazine 2 is fed along the guide plate 16 so as to be in pressure contact with the drive roller 17 and the driven roller 18.
Furthermore, when auto-loading is started, the main roller 14 and the roller 15 pressed against the main roller 14 transport the paper. When the leading edge of the recording medium (body 1) passes the recording start position, the feeding stops, and at point A, the recording medium 11 is exposed to the laser beam L from the optical scanning mechanism of the laser phototypesetting machine body 10.
B, and image information (for example, characters) is formed as a latent image. The recording medium 11 on which the image information has been formed is then further fed and conveyed by a driving roller 19 and a driven roller 20 pressed against it, passing between the guide plates 2 and 22 and being wound in the winding magazine 13. It is wound up by the take-up roller 13a. The recording medium 11 wound up by the take-up roller 13a is lightly pressed while being in contact with the roller 24 so as not to get stuck on the presser plate 2514 and sag. 261”l Phototypesetting machine body] Light-shielding lid installed on 0, 2
7 is a post-recording winding magazine 13 that is pulled in the direction of the arrow during recording.
28 is a slide lever that is attached to the lever 27 and slides when the lever is operated. 29 is a take-up magazine 13 that is engaged with an engagement hole of the slide lever 28 and can be removed. positioning bin,
Reference numeral 30 designates a light-shielding bin that shields the winding magazine 13 from light by operating a lever 27.

In the above-mentioned feeding mechanism, when recording preparation is completed and a recording button (not shown) is pressed after that, image information is recorded on the recording medium 11 at point A by the laser beam LB. When you turn on the cut button (not shown) after recording ends, the
Planter A [Drive roller 19 in body 10 and winding magazine 1
The spring take-up rollers 13a in 3 are rotated by a main drive motor (not shown) for a certain period of time predetermined by a timer, and the recorded portion on the recording medium 11 is rolled into the take-up magazine 13. Then, the recording medium 11 is cut as will be described later.

Next, the third section regarding the cutting operation of the recording medium after recording is completed.
This will be explained with reference to figures (a) and (b).

In the figure, 40a and 40b are thin cutters provided to cross each other, and these cutters 40a, 40
b is supported by a cutter support 4o. 41 is a micro switch that detects whether the cutters 40a+40b have returned to the starting position; 42idjy 40;
This is a microswitch that detects whether or not the cutting by a and 40b has been completed. However, as described above, when the cut button is turned on and the recorded portion is sent into the take-up magazine and the transfer of the recording medium is completed, the motor 43 is driven and the belt 45 moves in the direction of the arrow via the googly 44. Therefore, the cutter support 4° moves in the direction of the arrow on the guide rod 46, and the recording medium IJ (feeded in the direction perpendicular to the plane of the paper) shown by the chain line is cut by the cutters 40a and 40b.

When the cutter support 4o reaches the position indicated by the chain line, the microswitch 42 is turned on, the end of cutting is detected, and the motor 43Fi is now rotated in the opposite direction to the direction used during cutting, so that the cutter support 40 returns to its original starting position. When the motor 43 returns to that position, the rotation of the motor 43 stops. This cutting mechanism is arranged as shown in FIG. 3(b) at a portion indicated by a broken line C in FIG. 6, which will be described later.

4 and 5 are a plan view and a side view of the slide lever 28. FIG. Three engagement holes 28a are formed in the slide lever 28, and these engagement holes 28a are formed in the slide lever 28 during the recording mode.
A positioning pin 29 (see FIGS. 2 and 4) embedded in the bottom surface of the winding magazine 13 is engaged with the positioning pin 8a.

In FIGS. 4 and 5, 50 is a microswitch 4.
A solenoid 51 is energized in response to a cut end signal from 2 (see Fig. 3), and one end of the solenoid 51 is a coupler.
a rotating plate 53 which is rotatably supported by 1a on both sides and whose other end is pulled by a spring 52;
is mounted on one side of the rotating plate 51 (=I cut support, 54
This is a lock rod that is normally biased in the direction of contacting the slide lever 28 by the action of the spring 520, but is pulled in the direction away from the slide lever 28 when the solenoid 50 is biased.

Now, when the cutting is completed, the solenoid 50 is energized based on the cut end signal from the micro switch 42 (see FIG. 3) provided in the cutting mechanism shown in FIG. 3, and the plunger 50a is retracted in the direction of the arrow. The moving plate 51 rotates about point B against the spring 52 to the position shown by the chain line in FIG. The winding magazine 13 can now be moved in the direction of the arrow in FIG. 6 to the state shown by the chain line, and the winding magazine 13 can be removed. That is, the engagement of the winding magazine with the phototypesetting machine body can be released only after the recording medium is cut. Since the solenoid 50 uses a magnet that maintains its position even when no current is applied, the lock rod 54 can maintain its position. When the lever 27 is pressed, the hole 28b of the slide lever 28 moves to the position corresponding to the lock rod 54, and the micro switch 55
When the actuator is pressed as shown in the figure, the plunger 50a is biased in the linked direction by applying a current in the opposite direction to the solenoid 50, and the rotating plate 51 is returned to its original position by the spring 52, so that the lock is activated. Since the tip of the rod 54 enters the hole 28b of the slide lever, the lever 27 is locked. Therefore, since the lever 27 is kept pressed, the slide lever 28 slides and the positioning pin 29 remains disengaged from the engagement hole 28a during this time, so that the winding magazine 13 can be removed at any time. become.

On the other hand, when the lever 27 is pushed, the slide lever 28 moves to the chain line position as shown in FIG. 6, so that the end 60a of the lever 60 enters the hole 28aK of the slide lever 28. That is, the lever 60f'i is rotated clockwise by the spring 61 about the point pl to the position shown by the chain line.

As a result, the light-shielding sponge 62 comes into contact with the light-shielding plate 63 and the laser phototypesetting machine main body 10 (see FIG. 2) is light-shielded, and the driven roller 20 separates from the fixed driving roller 19. In this state, since the slide lever 28 is locked, the light-shielding sponge 62 will also continue to be in contact with the light-shielding plate 63. Even if you try to pull the slide lever 28 by mistake, you will not be able to pull it, so the light-shielding of the phototypesetting machine body 10 will be maintained. That will happen. On the other hand, at this time, the lever 27 is at the position shown by the solid line in FIG.
iJ This time, the spring 64 is extended and moves in the same direction as the slide lever 28, and the light shielding sponge 65 comes into contact with the guide plate 22, so that the winding magazine 13 is shielded from light.

When the lever 27 is pressed in this manner, the main body 10 and the winding magazine 13 are automatically shielded from light, so that the above-mentioned work of removing the winding magazine 13 can be done in a bright room, making the work easier.

As explained above, the present invention includes a laser recording device d that records image information using a laser beam on a roll-shaped recording medium fed from a supply magazine, and then winds the vaginal recording medium into a winding magazine. A cutting mechanism for cutting the recording medium is provided, and the winding magazine and the laser recording bag are disengaged from each other only after the cutting mechanism is activated. In this way, the take-up magazine can only be removed after the recording medium has been cut. Therefore, unlike in the past, there is no chance of accidentally removing the take-up magazine before cutting the recording medium. There is no possibility that the recording medium will be exposed to external light, such as being exposed to external light.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of an optical scanning mechanism of a laser phototypesetting machine as an example of a laser recording device, FIG. 2 is a side view of a recording medium feeding mechanism of a laser phototypesetting machine according to the present invention employing an autoloading mechanism, and FIG. Figures (a) and (b) are a plan view and a side view of the recording medium cutting mechanism, Figures 4 and 5 are a plan view and a side view of the lever that performs the light shielding action, and Figure 6 is a plan view and a side view of the recording medium cutting mechanism.
The figure is a sectional view of the main part of the light shielding mechanism of the main body of the laser phototypesetting machine, and FIG. 7 is a sectional view of the main part of the light shielding mechanism of the winding magazine. DESCRIPTION OF SYMBOLS 1... Laser device, 2... Mirror, 3, 5... Lens, 4... Acousto-optic modulator, 6... Driver, 7
...Heam expander, 8...Rotating polygon mirror, 9...f
θ lens, 10... Phototypesetting machine body, 11... Recording medium, 12... Supply magazine, 13... Winding magazine, 14... Main roller, 17.19... Drive roller, 1G , 21. 22...Guide plate, 26...Shading lid, 2'7.60
...Lever, 28...Slide lever/N-129...
- Positioning bin, 30... Light-shielding bin, 40... Cutter support, 41', 42, ss... Microsinch, 43... Motor, 44... Pulley,
45...Belt, 46...Guide rod, 50...-Solenoid, 51...Rotating plate, 52.61.64...
Spring, 54...Lock allowance, 62.65...Light shielding sponge, 63...Light shielding plate Patent applicant Konishiroku Photo Industry Co., Ltd. Agent Patent attorney Hiroshi Suzuki

Claims (1)

[Claims] A laser recording device that records image information on a roll-shaped recording medium fed from a supply magazine using a laser beam, and then winds the vaginal recording medium into a winding magazine, includes a cutting mechanism that cuts the recording medium, and the cutting mechanism that cuts the recording medium. A laser recording device characterized by being provided with an engagement release mechanism that releases the engagement between the winding magazine and the laser recording device main body only after the mechanism is activated.