JPH0430221B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a laser recording apparatus in which a take-up magazine cannot be removed until after the recording medium is 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 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 a roll-shaped recording medium is generally used. In the figure, 1 is a laser device that generates a laser beam, such as a He-Ne laser; 2 is a laser device that generates a laser beam, such as a He-Ne laser;
3 is a mirror, 3 is a lens that narrows down the beam diameter, 4 is an acousto-optic modulator, 5 is a lens that returns the beam diameter to its original value, 6 is a driver that drives the acousto-optic modulator 4 with the image information signal S, and 7 is a laser beam driver. 8 is a rotating polygon mirror (usually called a polygon) that rotates at high speed to scan the beam on the photoreceptor; 9 is a beam expander that expands the diameter; 9 is a rotating polygon mirror that scans the beam on the photoreceptor; It is an fθ lens (f is the focal length of the lens) for imaging, and numeral 10 indicated by a chain line is the main body of a laser phototypesetting machine that incorporates these optical scanning mechanisms and a feeding mechanism for a recording medium 11, which will be described later. 12 is a supply magazine in which the recording medium 11 is wound around a supply roller 12a and stored therein, and 13 is a winding magazine in which the recorded recording medium 11 is wound around a winding roller 13a.

This optical scanning system of the laser phototypesetting machine itself is well known, so a detailed explanation will be omitted. However, the recording medium 11 in the supply magazine 12 is conveyed in the direction of the arrow, and the recording medium 11 is conveyed at a predetermined position of the feeding mechanism of the recording medium 11. Image information (for example, Japanese characters) is drawn by irradiation with a laser beam from an optical scanning mechanism of the main body 10. 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 (visible image or latent image) of the image information on the recording medium 11. 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 11 is conveyed and wound into a winding magazine 13.

By the way, when a photosensitive recording medium is used, it is usually stored in the supply magazine 12 in a dark place such as a dark room, and then this supply magazine 1 is stored in a dark place such as a dark room.
2 is set at a predetermined position on the main body 10 of the laser phototypesetting machine. Thereafter, the recording medium is automatically transported to the recording position 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 the recording of information on the recording medium is finished, the gap between the recorded part and the following unrecorded part is cut, the recorded part 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 accidentally remove the take-up magazine before cutting the recording medium, the recording medium that was once caught inside the take-up magazine will be pulled out of the magazine. There is a problem in that a portion of the recording medium including the recorded portion is exposed to external light.

The present invention has been made in view of the above points, and is a laser recording device that records image information using a laser beam on a roll-shaped recording medium fed from a supply magazine, and then winds the recording medium into a winding magazine. In order to make it possible to remove the winding magazine only after cutting the recording medium, the winding magazine and the main body of the laser recording device are engaged with each other after the recording medium is cut by a cutting mechanism that cuts the recording medium. A disengagement mechanism for disengaging is provided, and before the disengagement operation of the disengagement mechanism, an entrance for the photosensitive material in the winding magazine and a path for feeding the photosensitive material in the main body to the winding magazine are opened. The disengagement operation of the disengagement mechanism closes the entrance of the photosensitive material in the take-up magazine and the path on the way for feeding the photosensitive material in the main body to the take-up magazine, and the disengagement mechanism is engaged. When the disengagement operation is performed, the disengagement mechanism is locked by the lock mechanism.

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. 1 indicate the same components. After setting the supply magazine 12 to the autoloading mechanism,
The recording medium 11 in the supply magazine 12 is fed along the guide plate 16 while being in pressure contact with the driving roller 17 and the driven roller 18, and when autoloading is started, the main roller 14
and a roller 15 that is pressed against this. When the leading edge of the recording medium 11 passes the recording start position, the feeding is stopped, and at point A, the recording medium 11 is irradiated with the laser beam LB from the optical scanning mechanism of the laser phototypesetting machine main body 10, and image information (for example, characters) is printed on the recording medium 11. 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 that is pressed against the driving roller 19 to guide plates 21 and 2.
2 and is wound up by the winding roller 13a of the winding magazine 13. The recording medium 11 wound up by the take-up roller 13a is lightly pressed by a pressing plate 25 while in contact with the roller 24 so as not to sag. 26 is the phototypesetting machine body 10
27 is a lever that is pulled in the direction of the arrow during recording and pushed in the opposite direction when removing the winding magazine 13 after recording; 28 is a slide lever that is attached to the lever 27 and slides when the lever is operated; 29 is a slide lever 28 A positioning pin 30 for the winding magazine 13 that engages and disengages from an engagement hole is a light-shielding pin that shields the winding magazine 13 from light when the lever 27 is operated.

In the above-mentioned feeding mechanism, when recording preparation is completed and a recording button (not shown) is then turned on, image information is recorded on the recording medium 11 at A by the laser beam LB. When the cut button (not shown) is turned on after recording is completed, the drive roller 19 in the phototypesetting machine body 10 and the take-up roller 13a in the take-up magazine 13 are activated by a timer by a main drive motor and a torque motor (not shown), respectively. By rotating for a predetermined period of time, the recorded portion on the recording medium 11 is wound into the take-up magazine 13, and then the recording medium 11 is cut as will be described later.

Next, the cutting operation of the recording medium after recording is completed will be explained with reference to FIGS. 3A and 3B.

In the figure, 40a and 40b are thin cutters arranged to intersect with each other, and these cutters 40a and 40b are supported by a cutter support 40. A micro switch 41 detects whether the cutters 40a, 40b have returned to their starting positions, and a micro switch 42 detects whether the cutters 40a, 40b have finished cutting. 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 pulley 44. Accordingly, the cutter support 40 moves on the guide rod 46 in the direction of the arrow, and the recording medium 11 (feeded perpendicular to the plane of the paper) shown by the chain line is cut by the cutters 40a and 40b. When the cutter support 40 reaches the position indicated by the chain line, the micro switch 42 is turned on and the end of cutting is detected, and the motor 43 is then rotated in the opposite direction to that used during cutting, so that the cutter support 40 returns to its original starting position. The motor 43 returns to the position where the motor 43 stops rotating.
This cutting mechanism is disposed at a portion indicated by a broken line C in FIG. 6, which will be described later, as shown in FIG. 3B.

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 during the recording mode, the winding magazine 13 is inserted into the engagement holes 28a.
A positioning pin 29 (see FIGS. 2 and 4) embedded in the bottom surface of the holder is engaged with the positioning pin 29 (see FIGS. 2 and 4). In FIGS. 4 and 5, 50 is a solenoid that is energized based on the cut end signal from the micro switch 42 (see FIG. 3), and 51 is a solenoid whose one end is connected to the plunger 51.
A rotating plate is supported for rotation on both sides by a and the other end is pulled by a spring 52, 53 is a support attached to one side of the rotating plate 51, and 54 is usually a It is a lock rod that is biased in the direction of contacting the slide lever 28 by the action of the spring 52, 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 cutting end signal from the micro switch 42 (see FIG. 3) provided in the cutting mechanism shown in FIG. rotates against the spring 52 about point B to the position shown by the solid chain in FIG. 6, 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. The slide lever 28, the lock rod 54, the rotating plate 51, the plunger 50a, and the spring 52 are collectively referred to as an engagement release mechanism. Since the solenoid 50 uses a magnet that maintains its position even when no current is applied, the lock bar 54 can maintain its position. Then, if you press the lever 27, the hole 28b of the slide lever 28
When the plunger 50a moves to a position corresponding to the locking rod 54 and the actuator of the microswitch 55 is pressed as shown, a reverse current is applied to the solenoid 50 to urge the plunger 50a in the opposite direction and rotate it. Since the moving plate 51 is returned to its original position by the spring 52, the tip of the locking rod 54 enters the hole 28b of the slide lever 28, so that the slide lever 2
8 is locked. Therefore, since the lever 27 is kept pressed, the slide lever 28 slides during this time, and the positioning pin 29 is inserted into the engagement hole 28a.
The take-up magazine 13 remains detached from the
can be removed at any time.

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 28a of the slide lever 28. That is, the lever 60
is rotated clockwise around point P by a spring 61 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 also continues to be in contact with the light-shielding plate 63.
Even if I tried to draw 8, I couldn't, so the phototypesetting machine body 1
0 light shielding will be maintained. On the other hand, at this time, the lever 27 is at the position shown by the solid line in FIG. 7, so the spring 64 extends and the light shielding pin 30 on the winding magazine 13 side moves in the same direction as the slide lever 28, and the light shielding sponge 65 guides it. Since it is in contact with the plate 22, the winding magazine 13 is shielded from light.

When the lever 27 is pressed in this way, 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 provides a recording medium in a laser recording device that records image information using a laser beam on a roll-shaped recording medium fed from a supply magazine, and then winds the recording medium into a winding magazine. A cutting mechanism is provided, and the engagement between the winding magazine and the main body of the laser recording apparatus is released 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 possibility of accidentally or accidentally removing the take-up magazine before cutting the recording medium. There is no possibility that a part of the recording medium including the recorded portion will be exposed to external light.

[Brief explanation of drawings]

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; Figures 3A and 3B 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 diagram of the light shielding mechanism of the main body of the laser phototypesetting machine. FIG. 7 is a cross-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...Beam expander, 8...Rotating polygon mirror, 9...Fθ lens, 1
0... Phototypesetting machine body, 11... Recording medium, 12... Supply magazine, 13... Winding magazine, 14... Main roller, 17, 19... Drive roller, 16, 21, 2
2... Guide plate, 26... Light-shielding lid, 27, 60... Lever, 28... Slide lever, 29... Positioning pin, 30... Light-shielding pin, 40... Cutter support, 4
1, 42, 55... Micro switch, 43... Motor, 44... Pulley, 45... Belt, 46... Guide rod, 50... Solenoid, 51... Rotating plate, 52, 6
1,64...Spring, 54...Lock rod, 62,65...
Light-shielding sponge, 63...light-shielding plate.

Claims (1)

[Claims] 1. A laser recording device that records image information using a laser beam on a roll-shaped recording medium fed from a supply magazine, and then winds the recording medium into a winding magazine, including a cutting mechanism that cuts the recording medium, and a cutting mechanism that cuts the recording medium; An engagement release mechanism is provided that releases the engagement between the winding magazine and the main body of the laser recording device only after the mechanism is activated, and before the engagement release operation of the engagement release mechanism, the entrance of the photosensitive material of the winding magazine and the A path for feeding the photosensitive material inside the main body to the take-up magazine is opened, and the disengagement operation of the disengagement mechanism causes the entrance of the photosensitive material in the take-up magazine and the photosensitive material inside the main body to be sent to the take-up magazine. A laser recording apparatus characterized in that a path in the middle of sending out is closed, and when the disengagement mechanism performs a disengagement operation, a lock mechanism locks the disengagement mechanism.