JP2868776B2 - Recording medium mounting device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium mounting device in a recording device such as a laser printer, a laser recorder, and a facsimile using a continuous recording medium wound in a roll shape.

2. Description of the Related Art Conventionally, in a recording apparatus that uses a continuous recording medium wound in a roll shape, a driving roller that is connected to a driving unit and rotates to pull out and transport the continuous recording medium stored in a cassette. A feed roller including a nip roller that rotates while being in contact with an outer peripheral surface of a drive roller is widely used. Here, one feed roller is used in a recording apparatus in which a cassette that stores a continuous recording medium and a recording unit that records image information on the continuous recording medium are provided close to each other. In a recording apparatus in which such a cassette and a recording unit are provided close to each other, when the continuous recording medium runs out during recording, the last screen is interrupted halfway, and wasteful data retransmission or the like occurs. May occur.

Therefore, there is a recording apparatus in which the distance between the cassette and the recording section is increased in order to eliminate waste caused by interruption of the last screen halfway even when the continuous recording medium runs out. As shown in FIG. 9 and FIG. 9, a plurality of feed rollers are used.

First, in the recording apparatus shown in FIG. 8, three feed rollers 4, 5, and 5 are provided between a cassette 2 for storing a continuous recording medium 1 and a recording section 3 for recording image information on the continuous recording medium 1.
6 are provided. In the first feed roller 4, the drive roller 7 is connected to a feed motor (not shown), which is a drive unit, and is rotatably provided. The nip roller 8 is resiliently provided on the outer peripheral surface of the drive roller 7. It is provided in contact with and rotatable. The nipping of the continuous recording medium 1 by the driving roller 7 and the nip roller 8 causes the leading end of the continuous recording medium 1 to abut on the contact portion between the driving roller 7 and the nip roller 8, and then the driving roller 7 continuously records. This is performed by rotating the medium 1 in the transport direction.
Note that the second feed roller 5 and the third feed roller 6 have the same structure as the first feed roller 4.

Next, in the recording apparatus shown in FIG. 9, three feed rollers 9, 3 are provided between the cassette 2 for storing the continuous recording medium 1 and the recording section 3 for recording image information on the continuous recording medium 1.
10,11 are provided. In the first feed roller 9, the nip roller 8 resiliently abutting on the outer peripheral surface of the drive roller 7 is provided movably in a direction (arrow A direction) in which the nip roller 8 comes into and away from the outer peripheral surface of the drive roller 7. Have been. Such nipping of the continuous recording medium 1 by the driving roller 7 and the nip roller 8 moves the nip roller 8 to a position away from the outer peripheral surface of the driving roller 7, and causes the continuous recording medium 1 to move between the driving roller 7 and the nip roller 8. Is carried out by returning the nip roller 8 to the original position after the insertion. The second feed roller 10 and the third feed roller 11 have the same structure as the feed rollers 4 to 6 described in FIG.

First, in the first feed roller 4 shown in FIG. 8, when the leading end of the continuous recording medium 1 does not exactly abut on the contact portion between the drive roller 7 and the nip roller 8 In
Even if the feed roller 4 is driven, the continuous recording medium 1 does not enter between the driving roller 7 and the nip roller 8, and it takes time to mount the continuous recording medium 1. When the continuous recording medium 1 is pulled out for the jam processing, the continuous recording medium 1 is placed between the driving roller 7 and the nip roller 8 of the first feed roller 4, and between the second feed roller 5 and the third It is sandwiched between the drive roller 7 and the nip roller 8 in the feed roller 6, and
The drive roller 7 connected to the feed motor does not rotate easily, and therefore, it takes time to pull out the continuous recording medium 1 at the time of jam processing or the like.

Next, in the first feed roller 9 shown in FIG. 9, mounting of the continuous recording medium 1 between the drive roller 7 and the nip roller 8 can be easily performed. However, when pulling out the continuous recording medium 1 for jam processing,
The continuous recording medium 1 is sandwiched between the drive roller 7 and the nip roller 8 by the second feed roller 10 and the third feed roller 11, and the drive roller 7 connected to the feed motor rotates easily. Therefore, it takes time to pull out the continuous recording medium 1 at the time of jam processing or the like.

Means for Solving the Problems A storage section for storing a continuous recording medium and a recording section for recording image information on the continuous recording medium pulled out from the storage section are provided, and a driving roller connected to a driving section and rotating In a recording apparatus in which a plurality of feed rollers including a nip roller that rotates while being in contact with the outer peripheral surface of the drive roller are arranged on a transport path from the storage section to the recording section, A clutch that separates the power transmission state between the drive roller and the drive unit in the other feed roller is provided with a contact / separation mechanism that causes the nip roller in the feed roller positioned to contact and separate from the outer peripheral surface of the drive roller. Provided.

A storage section for storing a continuous recording medium and a recording section for recording image information on the continuous recording medium drawn out of the storage section; a driving roller connected to a driving section and rotating; and an outer periphery of the driving roller In a recording apparatus, a plurality of feed rollers each including a nip roller rotating in contact with a surface are disposed on a transport path from the storage section to the recording section, wherein the feed roller positioned closest to the storage section And a detector for detecting that the continuous recording medium is inserted between the separated drive roller and the nip roller is provided. The recording roller is disposed between the feed roller positioned closest to the recording medium and the recording unit, and the nip roller is driven by the driving roller when the continuous recording medium is mounted. It is moved away from, is brought into contact with the nip roller to the drive roller based on a detection result from the detector.

The nip roller of the feed roller located closest to the storage section is separated from the outer peripheral surface of the drive roller by the contact / separation mechanism, a continuous recording medium is inserted between the drive roller and the nip roller, and then the nip roller is moved to the outer periphery of the drive roller. The continuous recording medium is mounted between the drive roller and the nip roller by returning to the position where the continuous recording medium comes into contact with the surface.
When performing jam processing, etc., the nip roller of the feed roller located closest to the storage unit is separated from the outer peripheral surface of the drive roller by the contact / separation mechanism, and the other feed roller is placed between the drive roller and the drive unit. With the provided clutch in a power cutoff state, the continuous recording medium is pulled out from between the drive roller and the nip roller.

Further, since the position of the detector for detecting the continuous recording medium is between the feed roller and the recording section located closest to the storage section, the recording is started with high accuracy from any position of the continuous recording medium. It is also possible to detect during the recording that the continuous recording medium has run out,
The process for dealing with the absence of recording paper can be performed quickly and smoothly.

Embodiment An embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows the overall configuration of a laser recorder 12, and firstly, a film which has been subjected to a light-inhibiting process, which is a storage portion for storing a silver halide film 13 which is a continuous recording medium wound in a roll shape. A cassette 14 is provided. Further, a transport path 16 for transporting the silver halide film 13 drawn from the film cassette 14 toward the collection cassette 15, and a laser beam writing unit 17 serving as a recording unit for recording image information on the silver halide film 13. And a control unit 18 for controlling a feed motor and the like to be described later.

On the transport path 16, there are provided two flanged rollers 19 having flanges attached to both sides, and feed rollers 20 to 22.
, A guide plate 23, a main roller 24, a cutter 25,
A discharge roller 26 is provided. Further, the laser light writing unit 17 includes a laser light source 27, a polygon mirror 28, f
An exposure position 32 for irradiating the silver halide film 13 with a laser beam is set on the outer peripheral surface of the main roller 24. A pair of nip rollers 33 located before and after the exposure position 32 are resiliently abutted on the outer peripheral surface of the main roller 24, and the main roller 24
A DC servo motor (not shown) for rotating the drive is connected.

Next, the feed rollers 20 to 22 are a first feed roller 20, a second feed roller 21, and a third feed roller 22 in order from the near side along the transport direction of the silver halide film 13. Each of the feed rollers 20 to 22 includes a drive roller 34 and a nip roller 35 which resiliently contacts the outer peripheral surface of the drive roller 34.

Here, in the first feed roller 20, the nip roller 35 is rotatably supported by one end of a contact / separation lever 36, and the other end of the contact / separation lever 36 is rotatably supported by a support shaft 37. I have. One end of a spring 38 for urging the contact / separation lever 36 in a direction in which the nip roller 35 contacts the outer peripheral surface of the drive roller 34 is connected to the contact / separation lever 36.
It is locked to. Further, a passive plate 39 extending in a direction opposite to the nip roller 35 with the support shaft 37 interposed therebetween is fixed to the other end of the contact / separation lever 36. An eccentric cam 41 fixed to a motor shaft 40 (not shown) is provided. The contact / separation lever 42, the spring 38, the passive plate 39, the eccentric cam 41, and the like constitute a contact / separation mechanism 42 for bringing the nip roller 35 into and out of contact with the outer peripheral surface of the drive roller 34.

Next, a feed motor 43, which is a drive unit for rotating the drive roller 34 in each of the feed rollers 20 to 22, is provided. A drive pulley 45 is connected to a rotary shaft 44 of the feed motor 43, and a passive pulley 47 is connected to a rotary shaft 46 of the drive roller 34 in the feed rollers 20 to 22, and these drive pulleys 45 and passive pulleys are connected.
A belt 48 for power transmission is wound between the belt and the belt 47.
Note that the second feed roller 21 and the third feed roller
An electromagnetic clutch 49, which is a clutch for intermittently transmitting power from the feed motor 43, is provided on the rotation shaft 46 of the drive roller 34 with the drive roller 34.

In such a configuration, the silver halide film 13 pulled out from the film cassette 14 is transported along the transport path 16 and irradiated with a laser beam at the exposure position 32 to write image information. The silver halide film 13 on which the image information has been written is cut into a predetermined length by a cutter 25 and discharged into the collection cassette 15.

Next, when mounting the silver halide film 13, first,
The eccentric cam 41 is rotated by 180 ° about the axis of the motor shaft 40 by driving the motor from the state shown in FIG.
Then, the outer peripheral surface of the large diameter portion of the eccentric cam 41 is
, The passive plate 39 and the contact / separation lever 36 rotate about the axis of the support shaft 37 as shown in FIG.
Is separated from the outer peripheral surface of the drive roller. Then, the leading end of the silver halide film 13 is inserted between the drive roller 34 and the nip roller 35 which are separated from each other, and then the eccentric cam 41 is rotated by 180 ° around the axis of the motor shaft 40 by the motor. Due to this rotation, the small diameter part of the eccentric cam 41 becomes a passive plate.
The eccentric cam 41 faces the passive plate 39
The contact / separation lever 36 is rotated by the urging force of the spring 38 so that the nip roller 35 comes into contact with the outer peripheral surface of the drive roller 34, and the first feed roller 20 moves between the drive roller 34 and the nip roller 35. The mounting of the silver halide film 13 is completed.

After the mounting of the silver halide film 13 between the drive roller 34 and the nip roller 35 in the first feed roller 20 is completed, the drive roller 34 of each of the feed rollers 20 to 22 is rotated by the drive force of the feed motor 43. The silver halide film 13 is transported along the transport path 16 to write the image information by the laser light writing unit 17 and cut by the cutter 25 to a predetermined length.

Next, at the time of jam processing or the like, the eccentric cam 41 is rotated by 180 ° by driving the motor so that the eccentric cam 4 is rotated.
The large diameter part of 1 is brought into contact with the passive plate 39,
The nip roller 35 of the first feed roller 20 is separated from the outer peripheral surface of the drive roller 34 by rotating the nip roller 35 around the axis of the support shaft 37. And a second feed roller
An electromagnetic clutch 49 provided on the rotating shaft 46 of the driving roller 34 in the 21 and the third feed roller 22 is turned off by cutting off the power transmission, so that these driving rollers 34 are rotatable. Therefore, in the first feed roller 20, the drive roller 34 and the nip roller 35 separate from each other, and in the second feed roller 21 and the third feed roller 22, the drive roller 34 and the nip roller 35 become rotatable. ,
The draw-out of the silver halide film 13 in which the jam has occurred can be easily performed with a small force.

Next, a modified example of the contact / separation mechanism 50 for moving the nip roller 35 of the first feed roller 20 toward and away from the drive roller 34 will be described with reference to FIGS. 5 and 6. FIG. The contact / separation mechanism 50 is used to manually move the nip roller 35 toward and away from the nip roller 35. The nip roller 35 is rotatably supported by a pivotable contact / separation lever 36 with a support shaft 37 as a fulcrum. And a lock pin 52 for locking the contact / separation lever 36 at a rotation position where the nip roller 35 is separated from the drive roller 34. Further, a lock lever 54 is provided, which is rotatable about the support shaft 53 and which engages with the lock pin 52 in a detachable manner.

In such a configuration, when the nip roller 35 is separated from the driving roller 34, the handle 51 is gripped and the contact / separation lever 36 is rotated around the axis of the support shaft 37 in the direction separating from the driving roller 34 (direction of arrow B). 6 to engage the claw 55 of the lock lever 54 with the lock pin 52 as shown in FIG. The lock lever 54 is urged by a spring 56 in a direction in which the lock lever 54 is engaged with the lock pin 52, so that the engagement between the lock lever 54 and the lock pin 52 is maintained and the nip roller 35 is
Is maintained in a state of being separated from the outer peripheral surface of the drive roller 34.

When releasing the engagement state between the lock lever 54 and the lock pin 52 and bringing the nip roller 35 into contact with the outer peripheral surface of the drive roller 34, the release projection 57 of the lock lever 54 is moved downward from the state shown in FIG. (In the direction of arrow C) and rotate the lock lever 54 around the axis of the support shaft 53 so that the claw portion 55 of the lock lever 54
And the lock pin 52 is released from the engagement state. Then, the contact / separation lever 36 rotates in the direction of arrow B 'by the urging force of the spring 38, and the nip roller 35 comes into contact with the outer peripheral surface of the drive roller 34.

Next, an embodiment of the present invention will be described with reference to FIG. 1 to 4 are denoted by the same reference numerals, and description thereof will be omitted. In this embodiment, a detector 58 is provided between the first feed roller 20 and the second feed roller 21 to detect that the leading end of the silver halide film 13 has been conveyed. The driving of the driving roller 34 is performed using the first belt 59 and the second belt 60.

First, the detector 58 includes a rotatable lever 61 having a leading end extended onto the transport path 16, a mechanical shutter 62 that rotates in conjunction with the rotation of the lever 61, and a transmission type photo And an interrupter 63. When the leading end of the silver halide film 13 travels along the transport path 16 from the first feed roller 20 to the second feed roller 21, it contacts the lever 61 on the way, and the lever 61 rotates in the direction of arrow D. . Then, with the rotation of the lever 61, the mechanical shutter 62 rotates in the direction of the arrow D ', and the light from the light emitting unit in the transmission type photointerrupter 63 is received by the light receiving unit, and the silver halide film 13
Is detected. Therefore, the silver halide film 13 is inserted between the drive roller 34 and the nip roller 35 of the first feed roller 20 by driving the motor that rotates the eccentric cam 41 based on the detection result of the detector 58. After that, the nip roller 35 is automatically brought into contact with the outer peripheral surface of the drive roller 34, so that the silver halide film 13 can be reliably held by the first feed roller 20.

In the present embodiment, the wavelength range of light for exposing the silver halide film 13 used as a continuous recording medium is mainly 66
0 to 840 nm, and the wavelength range of the light emitted from the infrared LED incorporated in the photon interrupter is 800 to 1100 nm, so when the light from the photointerrupter is directly irradiated on the silver halide film 13, Since the silver halide film 13 is exposed, a detector 58 using a transmission type photointerrupter 63 is used. Therefore, when using a continuous recording medium that is not likely to be exposed by light emitted from the infrared LED incorporated in the photointerrupter, it is easy to mount, and the reflection that is not in contact with the continuous recording medium is used. A type photo interrupter may be used.

The driving of the driving roller 34 is controlled by two belts 59, 60.
, The electromagnetic clutch 49 is connected to the second feed roller
It only needs to be provided on the rotating shaft 46 in 21.

Advantageous Effects of the Invention As described above, the present invention provides a storage section for storing a continuous recording medium and a recording section for recording image information on the continuous recording medium drawn from the storage section, and is connected to a driving section and rotated. In a recording apparatus, a plurality of feed rollers including a driving roller and a nip roller that rotates while being in contact with the outer peripheral surface of the driving roller are disposed on a transport path from the storage section to the recording section. Providing a contact / separation mechanism for contacting / separating the nip roller in the feed roller located closest to the outer peripheral surface of the drive roller,
Since a clutch for interrupting the power transmission state is provided between the drive roller and the drive unit in the other feed roller, the nip roller in the feed roller located closest to the storage unit is moved by the contact / separation mechanism to the drive roller. The continuous recording medium is inserted between the drive roller and the nip roller by separating from the outer peripheral surface, inserting the continuous recording medium between the drive roller and the nip roller, and then returning the nip roller to a position in contact with the outer peripheral surface of the drive roller. When performing jam processing or the like, the nip roller of the feed roller located closest to the storage unit is separated from the outer peripheral surface of the drive roller by the contact / separation mechanism, and the other feed rollers are driven. The clutch provided between the roller and the drive unit is in the power cutoff state, and the drive roller and the nip roller An effect that can draw a continuous recording medium from between.

A storage section for storing a continuous recording medium and a recording section for recording image information on the continuous recording medium drawn out of the storage section; a driving roller connected to a driving section and rotating; and an outer periphery of the driving roller In a recording apparatus, a plurality of feed rollers each including a nip roller rotating in contact with a surface are disposed on a transport path from the storage section to the recording section, wherein the feed roller positioned closest to the storage section And a detector for detecting that the continuous recording medium is inserted between the separated drive roller and the nip roller is provided. The recording roller is disposed between the feed roller positioned closest to the recording medium and the recording unit, and the nip roller is driven by the driving roller when the continuous recording medium is mounted. And the nip roller is brought into contact with the drive roller based on the detection result from the detector, so that the position of the detector that detects the continuous recording medium is located closest to the storage unit. Since it is between the feed roller and the recording section, recording can be started with high accuracy from any position on the continuous recording medium, and a state where the continuous recording medium has run out can be detected during recording. Therefore, there is an effect that the response processing for the absence of the recording paper can be performed quickly and smoothly.

[Brief description of the drawings]

FIG. 1 is a structural view showing an embodiment of the invention according to claim 1;
FIG. 2 is an enlarged front view of the contact / separation mechanism, FIG. 3 is an enlarged front view of the contact / separation mechanism with the nip roller separated from the outer peripheral surface of the drive roller, and FIG. 5 and 6 are front views showing modifications of the contact / separation mechanism, FIG. 7 is a front view showing an embodiment of the invention according to claim 2, FIG. FIG. 9 is a front view showing a conventional feed roller section, and FIG. 9 is a front view showing another conventional feed roller section. 13: continuous recording medium, 14: storage unit, 16: transport path, 17
…… Recorder, 20-22… Feed roller, 34… Drive roller, 35… Nip roller, 42… Contact / separation mechanism, 43… Drive unit, 49… Clutch, 50… Contact / separation mechanism, 58 …… Detector

Claims (2)

(57) [Claims] A storage section for storing a continuous recording medium and a recording section for recording image information on the continuous recording medium drawn out of the storage section; a driving roller connected to a driving section and rotating; In a recording apparatus in which a plurality of feed rollers including a nip roller that rotates while being in contact with an outer peripheral surface of a roller are disposed on a transport path from the storage section to the recording section, the plurality of feed rollers are positioned closest to the storage section. A contact / separation mechanism for contacting / separating the nip roller of the feed roller with an outer peripheral surface of the drive roller is provided, and a clutch for interrupting a power transmission state between the drive roller and the drive unit of the other feed roller is provided. A recording medium mounting device characterized by the above-mentioned. A storage section for storing a continuous recording medium and a recording section for recording image information on the continuous recording medium drawn out of the storage section, a driving roller connected to a driving section and rotating, and a driving roller for driving the driving roller. In a recording apparatus in which a plurality of feed rollers including a nip roller that rotates while being in contact with an outer peripheral surface of a roller are disposed on a transport path from the storage section to the recording section, the plurality of feed rollers are positioned closest to the storage section. A detector for providing a contact / separation mechanism for bringing the nip roller of the feed roller into contact with and separating from the outer peripheral surface of the drive roller, and detecting that the continuous recording medium is inserted between the drive roller and the nip roller that have been separated; Is disposed between the feed roller positioned closest to the storage section and the recording section, and the nip roller is driven when the continuous recording medium is mounted. Is moved away from the roller, the recording medium mounting apparatus for causing abutting the nip roller to the drive roller based on a detection result from the detector.