JP2892020B2 - Recording device - Google Patents

Description

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

2. Description of the Related Art Conventionally, in a recording apparatus that uses a continuous recording medium wound in a roll shape, a feed roller including a driving roller and a nip roller has been widely used to pull out and transport the continuous recording medium stored in a cassette. The structure of the feed roller is generally shown in FIG. 5 or FIG.

In the feed roller 1 shown in FIG. 5, the nip roller 2 resiliently comes into contact with the outer peripheral surface of the drive roller 3, and further moves in the direction (direction of arrow A) where the nip roller 2 comes into contact with or separates from the drive roller 3. It is provided freely. When the nip roller 2 and the driving roller 3 are in contact with each other, the driving roller 3 is driven to rotate by a driving force from a feed motor (not shown), and the nip roller 2 is rotated by the driving roller 3. It rotates with it. The continuous recording medium 4 by such a nip roller 2 and drive 3
Is carried out by moving the nip roller 2 to a position away from the drive roller 3, inserting the continuous recording medium 4 between the nip roller 2 and the drive roller 3, and then returning the nip roller 2 to its original position.

Further, in the feed roller 5 shown in FIG. 6, the nip roller 2 and the drive 3 are maintained in a state where the outer peripheral surfaces thereof are elastically brought into contact with each other. Such a nip roller 2
When the continuous recording medium 4 is nipped by the driving roller 3 and the leading end of the continuous recording medium 4 abuts on the contact portion between the nip roller 2 and the driving roller 3, the nip roller 2 and the driving roller 3 are then connected. The rotation is performed in the transport direction of No. 4.

Problems to be Solved by the Invention First, in the feed roller 1 shown in FIG.
Continuous recording medium 4 by nip roller 2 and drive roller 3
Can be easily clamped. However, since a mechanism for moving the nip roller 2 in the direction of contacting and separating from the drive roller 3 is required, the structure becomes complicated and the cost increases.

On the other hand, in the feed roller 5 shown in FIG.
If the leading end of the continuous recording medium 4 does not exactly abut on the contact portion between the nip roller 2 and the driving roller 3, the continuous recording medium 4 is kept rotating even when the feed roller 5 is rotated.
And the drive roller 3 do not enter. If the continuous recording medium 4 enters between the nip roller 2 and the driving roller 3 in a state where the leading end of the continuous recording medium 4 is inclined, the continuous recording medium 4 causes skew. Further, when the feed roller 5 is manually rotated to hold the continuous recording medium 4 between the nip roller 2 and the driving roller 3, the motor shaft of the feed roller connected to the feed roller 5 is also rotated. Need power.

Means for Solving the Problems The invention according to claim 1, wherein a feed roller that rotates while bringing the peripheral surfaces into contact with each other and pulls out and conveys the continuous recording medium wound in a roll shape, and an image on the continuous recording medium In a recording apparatus having a recording unit for recording information and a cut unit for cutting the continuous recording medium at a predetermined position,
A clutch for interrupting power transmission is provided between a feed roller for holding the drawn-out continuous recording medium at least first and a driving unit for rotating this feed roller, and the clutch is set when the continuous recording medium is set in a recording apparatus. The continuous transmission medium is conveyed by setting the power transmission cutoff state and directly rotating the feed roller by hand.

2. The feed roller according to claim 1, further comprising a detector for detecting that the drawn continuous recording medium is sandwiched by a feed roller that first sandwiches the continuous recording medium. Provided on the downstream side.

The invention according to claim 1 or 2, further comprising: a guide plate that guides the continuous recording medium toward a feed roller that first holds the drawn continuous recording medium; and a rotation center that is parallel to the feed roller. A small-diameter nip roller that resiliently contacts the outer peripheral surface of the feed roller is provided upstream of the contact portion of the feed roller along the recording medium conveyance direction.

Further, in the invention according to claim 1, 2 or 3, power is transmitted between a feed roller other than the feed roller that first holds the drawn continuous recording medium and a drive unit that rotationally drives these other feed rollers. An intermittent clutch was provided.

When the continuous recording medium is set in the recording apparatus, the leading end of the continuous recording medium is abutted against a contact portion of the feed roller that first sandwiches the continuous recording medium, and the continuous recording by the feed roller is performed by directly rotating the feed roller by hand. Hold the medium. Therefore, it is possible to visually check the feed state, and it is possible to immediately detect a failure such as idle feeding or skew.In addition, when manually rotating the feed roller, the power transmission from the driving unit to the feed roller is performed. By setting the intermittent clutch to the power transmission cutoff state, the rotation operation of the feed roller can be performed with a small force,
The setting of the continuous recording medium in the recording device can be easily performed.

In addition, by providing the detector, it can be confirmed that the continuous recording medium is nipped by the feed roller,
This facilitates the work of setting the continuous recording medium on the recording device.

Further, by providing the guide plate and the small-diameter nip roller, the leading end of the continuous recording medium can be reliably guided to the contact portion by the feed roller.

In addition, all the feed rollers that pinch and convey the continuous recording medium are rotatable by setting the clutch between the driving unit and the drive unit to be in a power transmission cutoff state, so that the continuous recording medium that is jammed during the conveyance can be easily taken out. I can do it.

Embodiment A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows the overall structure of a laser recorder 6, in which a film cassette 8 which has been subjected to a light-inhibiting process for accommodating a silver halide film 7 which is a continuous recording medium wound in a roll is provided. Have been. Further, the silver halide film 7 pulled out of the film cassette 8
A transport path 10 for transporting the paper toward the collection cassette 9, a laser light writing section 11 which is a recording section for recording image information on the silver halide film 7, and a control section for controlling a feed motor and the like described later. 12 are provided.

On the conveyance path 10, two flanged rollers 13 having flanges attached to both sides, feed rollers 14 to 16 are provided.
, A guide plate 17, a main roller 18, a cutter 19 as a cutting portion, and a discharge roller 20. The laser beam writing unit 11 includes a semiconductor laser 21, a collimating lens, a line mirror 24, a polygon mirror 25,
the silver halide film 7 and the like.
An exposure position 27 for irradiating the main roller 18 with a laser beam is set on the outer peripheral surface of the main roller 18. A pair of nip rollers 28 located before and after the exposure position 27 are resiliently abutted on the outer peripheral surface of the main roller 18, and a DC servo motor (not shown) for rotating the main roller 18 is used. ) Are connected.

Next, the feed rollers 14 to 16 are
And a nip roller 30 resiliently abutting against the outer peripheral surface of the drive roller 29. A pulley 32 and an electromagnetic clutch 33, which is a clutch, are attached to the rotating shaft 31 connected to the drive roller 29, respectively. Have been. Further, a feed motor 34 as a driving unit is provided, and a belt 37 is wound between a pulley 36 fixed to a motor shaft 35 of the feed motor 34 and the pulley 32, and the electromagnetic clutch is provided.
The power transmission from the feed motor 34 to the drive roller 29 is interrupted by intermittently turning 33 on and off.

A guide plate 38 for guiding the silver halide film 7 toward the feed roller 14 is provided between the flanged roller 13 and the feed roller 14. Further, the feed roller along the transport direction of the silver halide film 7
A small-diameter nip roller 39 is provided upstream of the contact portion between the drive roller 29 and the nip roller 30 in 14 and elastically contacts the outer peripheral surface of the drive roller 29.

In such a configuration, the silver halide film 7 pulled out of the film cassette 8 is transported along the transport path 10 and irradiated with a laser beam at the exposure position 27 to write image information. The silver halide film 7 on which the image information has been written is cut to a predetermined length by the cutter 19 and discharged into the collection cassette 9.

Next, when the silver halide film 7 is set, the silver halide film 7 drawn from the film cassette 8 is brought into contact with the outer peripheral surface of the upper end portion of the flanged roller 13, and the direction of the feed roller 14 along the guide plate 38. And the leading end of the silver halide film 7 is brought into contact with the contact portion between the drive roller 29 and the nip roller 39. Here, the silver halide film 7
Is drawn out along the flanged roller 13, so that skew and meandering are prevented. The leading end of the silver halide film 7 is guided by the guide plate 38 and advances straight, and abuts on the contact portion between the drive roller 29 and the nip roller 39 while maintaining the straight advance state. Therefore, there is no need to insert the tip of the silver halide film 7 in order to aim at the contact portion between the drive roller 29 and the nip roller 39.
The front end of the silver halide film 7 can be easily abutted against the contact portion between the drive roller 29 and the nip roller 39.

After the leading end of the silver halide film 7 abuts against the contact portion between the drive roller 29 and the nip roller 39, the nip roller 30 is manually rotated along the transport direction of the silver halide film 7. At this time, the drive roller 29 is rotatable by cutting the electromagnetic clutch 33, and the drive roller 29 is integrally and lightly rotated with the rotation of the nip roller 30. Further, the nip roller 39 rotates integrally with the rotation of the drive roller 29, and the leading end of the silver halide film 7 is conveyed while being nipped between the drive roller 29 and the nip roller 39, and then by the drive roller 29 and the nip roller 30. It is pinched and transported.

Here, when the distance from the feed roller 14 to the main roller 18 is short, the tip of the silver halide film 7 is advanced to the position of the main roller 18 by continuously rotating the nip roller 30 manually. On the other hand, when the distance from the feed roller 14 to the main roller 18 is long, the silver halide film 7 is fed by rotating the nip roller 30 manually, and the leading end of the silver halide film 7 is moved by the drive roller 29 and the nip roller 30. The drive roller 29 is rotated by the driving force from the feed motor 34 by connecting the electromagnetic clutch 33, and the leading end of the silver halide film 7 is advanced to the position of the main roller 18.

In addition, the driving roller 29 in each of the feed rollers 14 to 16
Since the electromagnetic clutch 33 is provided on the rotating shaft 31 of each of the above, each drive roller 29 becomes rotatable by cutting each electromagnetic clutch 33. Therefore, when performing jam processing, all electromagnetic clutches
By cutting 33, all the drive rollers 29 become rotatable, and the jammed silver halide film 7 can be easily pulled out with a small force.

Next, a second embodiment of the present invention will be described with reference to FIG. 1 to 3 are denoted by the same reference numerals, and description thereof will be omitted. In this embodiment, the first feed roller 14 and the second feed roller
A detector 40 for detecting the presence or absence of the silver halide film 7 is provided between the first belt 41 and the second belt 42. Further, the rotation of the drive roller 29 by the feed motor 34 is performed using the first belt 41 and the second belt 42. is there.

First, the detector 40 includes a rotatable lever 43 having a leading end extended onto the transport path 10, a mechanical shutter 44 that rotates in conjunction with the rotation of the lever 43, and a transmission type photo interrupter. It consists of 45. When the leading end of the silver halide film 7 travels along the transport path 10 from the first feed roller 14 to the second feed roller 15, it contacts the lever 43 halfway, and the lever 43 rotates in the direction of arrow B. Then, with the rotation of the lever 43, the mechanical shutter 44 rotates in the direction of arrow B ', and the light from the light emitting portion of the transmission type photo interrupter 45 is received by the light receiving portion, and the silver halide film 7 is received.
Is detected. Therefore, the electromagnetic clutch 33 is connected based on the detection result of the detector 40, so that the nip roller 30 is manually rotated to feed the silver halide film 7 of a predetermined size and the driving force of the feed motor 34 thereafter. And the feed to the main roller 18 can be performed smoothly.

In this embodiment, the wavelength range of light for exposing the silver halide film 7 used as the 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 photointerrupter is 800 to 1100 nm. Therefore, when the light from the photointerrupter is directly irradiated on the silver halide film 7, the silver A detector using a transmission type photointerrupter 45 because the salt film 7 is exposed.
You are using 40. Therefore, when using a continuous recording medium that is not likely to be exposed by the light emitted from the infrared LED incorporated in the photointerrupter, it is easy to install and non-contact with the continuous recording medium. May be used.

The rotation of the drive roller 29 is controlled by two belts 41 and 42.
Electromagnetic clutch 33 is the first feed roller
It is only necessary to provide the rotation shaft 31 of the second feed roller 15 and the rotation shaft 31 of the second feed roller 15.

The present invention provides a clutch for intermittently transmitting power between a feed roller that sandwiches the continuous recording medium drawn at least first as described above and a drive unit that drives the feed roller. At the time of setting to the recording apparatus, the clutch is set to the power transmission cutoff state, and the feed state can be visually checked by directly rotating the feed roller by hand, so that failure such as idle feeding or skew can be immediately found. When the lever is set while the leading end of the continuous recording medium is held between the first feed roller, the feed roller can be easily rotated manually by setting the clutch to a power transmission cutoff state. The continuous recording medium can be easily set in the recording device. By detecting that the body has been clamped by the first feed roller, the efficiency of the setting operation of the continuous recording medium can be improved, and further, the continuous recording medium is guided toward the feed roller that clamps the continuous recording medium first. By providing a guide plate and a small-diameter nip roller that resiliently abuts the outer peripheral surface of the feed roller, the leading end of the continuous recording medium can be reliably guided to the abutting portion by the feed roller. The media can be easily set, and all the feed rollers for nipping and transporting the continuous recording medium are rotatable with the clutch between the drive unit and the drive unit being in a power transmitting state, so that a jam during the transportation can be prevented. There is an effect that the generated continuous recording medium can be easily taken out.

[Brief description of the drawings]

FIG. 1 is a structural view showing a first embodiment of the present invention, FIG. 2 is a plan view showing a power transmission structure to a driving roller, FIG. 3 is an enlarged front view showing a feed roller portion, and FIG. FIG. 5 is an enlarged front view showing a feed roller unit in a second embodiment of the present invention, FIG. 5 is a front view showing a conventional feed roller unit, and FIG. 6 is a front view showing another conventional feed roller unit. is there. 7 ... Continuous recording medium, 11 ... Recording section, 14-16 ... Feed roller, 19 ... Cut section, 33 ... Catch, 34 ... Drive section, 38 ... Guide plate, 39 ... Nip roller, 40 ... Detector

Claims (4)

(57) [Claims] A feed roller that rotates while bringing the outer peripheral surfaces into contact with each other and pulls out and conveys a continuous recording medium wound in a roll form; a recording unit that records image information on the continuous recording medium; In a recording apparatus having a cutting section for cutting a recording medium at a predetermined position, a clutch for interrupting power transmission between a feed roller for nipping the continuous recording medium drawn out at least first and a driving section for rotating and driving the feed roller. Wherein the clutch is set to a power transmission cutoff state when the continuous recording medium is set in the recording apparatus, and the continuous recording medium is conveyed by directly rotating the feed roller by hand. 2. A detector for detecting that a continuous recording medium that has been pulled out is clamped by a feed roller that first clamps the continuous recording medium is provided downstream of the feed roller along the transport direction of the continuous recording medium. 2. The recording apparatus according to claim 1, wherein: 3. A guide plate for guiding the continuous recording medium toward a feed roller which first holds the drawn continuous recording medium, a guide plate having a rotation center parallel to the feed roller, and extending along a transport direction of the continuous recording medium. 3. The recording apparatus according to claim 1, further comprising a small-diameter nip roller that resiliently contacts an outer peripheral surface of the feed roller at a position upstream of a contact portion of the feed roller. 4. A clutch for intermittently transmitting power between a feed roller other than the feed roller for initially nipping the continuous recording medium drawn out and a drive unit for rotating the other feed rollers. The recording apparatus according to claim 1, 2 or 3, wherein