JPH02130174A - Recording apparatus - Google Patents

Abstract

PURPOSE:To surely grasp a continuous recording medium by providing a clutch between a feed roller and the drive part for rotationally driving the feed roller. CONSTITUTION:Two rollers 13 each having flanges mounted thereto on both sides thereof, feed rollers 14-16, a guide plate 17, a main roller 18, a cutter 19 and a discharge roller 20 are provided on a feed path 10. Each of the feed rollers 14-16 are constituted of a drive roller 29 and the nip roller 30 in elastic contact with the outer peripheral surface of the drive roller 29, and a pulley 32 and a solenoid clutch 33 are respectively mounted to the rotary shaft 31 connected to the drive roller 29. The nip roller 39 having a small diameter in elastic contact with the outer peripheral surface of the drive roller 29 in the feed roller 14 is provided on this side in the feed direction of a silver salt film 7.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to recording devices such as laser printers, laser recorders, and facsimile machines that use a continuous recording medium wound in a roll.

2. Description of the Related Art Conventionally, in recording devices that use a continuous recording medium wound in a roll, a feed roller consisting of a drive roller and a nip roller has been widely used to pull out and convey the continuous recording medium stored in a cassette. The structure of the feed roller is generally shown in FIG. 5 or 6.

In the feed roller 1 shown in FIG. 5, the nip roller 2 is elastically abutted against the outer peripheral surface of the drive roller 3, and furthermore, the nip roller 2 is moved in the direction in which it approaches and separates from the drive roller 3 (in the direction of six arrows). It is movable. In addition,
When the nip roller 2 and the drive roller 3 are in contact with their outer peripheral surfaces, the drive roller 3 is connected to the feed motor (
(not shown), and the nip roller 2 rotates as the drive roller 3 rotates. In order to sandwich the continuous recording medium 4 between the nip roller 2 and the drive roller 3 in this way, the nip roller 2 is moved to a position away from the drive roller 3, and the continuous recording medium 4 is inserted between the nip roller 2 and the drive roller 3. This is done by returning the nip roller 2 to its original position later.

Further, in the feed roller 5 shown in FIG. 6, the nip roller 2 and the drive roller 3 are maintained in a state in which their outer peripheral surfaces are elastically abutted against each other.

In this way, the continuous recording medium 4 is held between the nip roller 2 and the drive roller 3 by abutting the leading end of the continuous recording medium 4 against the abutment area between the nip roller 2 and the drive roller 3, and then holding the continuous recording medium 4 between the nip roller 2 and the drive roller 3. This is performed by rotating the continuous recording medium 4 along the conveyance direction.

Problems to be Solved by the Invention First, in the feed roller 1 shown in FIG. 5, the continuous recording medium 4 can be easily nipped between the nip roller 2 and the drive roller 3. However, since a mechanism for moving the nip roller 2 toward and away 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. 6, the tip of the continuous recording medium 4 is connected to the nip roller 2 and the drive roller
If the continuous recording medium 4 does not exactly abut the contact portion with the nip roller 2 and the drive roller 3, even if the feed roller 5 is rotated, the continuous recording medium 4 will not enter between the nip roller 2 and the drive roller 3. Further, if the leading end of the continuous recording medium 4 enters between the nip roller 2 and the drive roller 3 in an inclined state, the continuous recording medium 4 will be skewed. Furthermore, when the feed roller 5 is manually rotated to sandwich the continuous recording medium 4 between the nip roller 2 and the drive roller 3.

The motor shaft of the feed motor connected to the feed roller 5 is also rotated, which requires a large amount of force.

Means for Solving the Problems A feed roller rotates with outer peripheral surfaces in contact with each other and pulls out and conveys a continuous recording medium wound into a roll, and a recording section records image information on the continuous recording medium. In the recording apparatus having a cutting section that cuts the continuous recording medium at a predetermined position, a clutch is provided between the feed roller and a drive section that rotationally drives the feed roller.

Further, a guide plate for guiding the continuous recording medium and a small-diameter nip roller that resiliently abuts on the outer peripheral surface of the feed roller are provided immediately before the feed roller.

Operation: By abutting the leading end of the continuous recording medium against the nipping position of the feed roller and manually rotating the feed roller, the continuous recording medium is nipped by the feed roller. By disengaging the clutch when manually rotating the feed roller, the feed roller can be rotated with a small amount of force. Further, after the continuous recording medium is held between the feed rollers, the clutch is connected and the feed rollers are rotated by the driving force from the drive unit, thereby easily feeding the continuous recording medium to a predetermined position.

Furthermore, the leading end of the continuous recording medium is reliably guided to the nipping position by the feed roller by the guide plate and the small-diameter nip roller provided just before the feed roller.

Embodiment A first embodiment of the present invention will be explained based on FIGS. 1 to 3. FIG. 1 shows the overall structure of the laser recorder 6. First, there is a film cassette 8 which is treated to prevent light from entering and houses a silver halide film 7, which is a continuous recording medium wound into a roll. It is being Furthermore, a conveyance path 10 for conveying the silver halide film 7 pulled out from the film cassette 8 toward a recovery cassette 9, and a laser beam writing unit 11 which is a recording unit for recording image information on the silver halide film 7. and a control section 12 for controlling a feed motor and the like, which will be described later.

On the conveyance path 10, there are two flanged rollers 13 with flanges attached on both sides, and feed rollers 14 to 13.
16, a guide plate 17, a main roller 18, a cutter 19 serving as a cutting section, and a discharge roller 20. Further, the laser beam writing section 11 includes a semiconductor laser 21, a collimating lens 22 . line mirror 24,
It is composed of a polygon mirror 25, an fθ lens 26, etc., and an exposure position 27 for irradiating the silver halide film 7 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 circumferential surface of the main roller 18, and the main roller 18 is provided with a DC voltage for rotationally driving the main roller 18. A servo motor (not shown) is connected.

Next, the feed rollers 14 to 16 are composed of a drive roller 29 and a nip roller 30 that resiliently contacts the outer circumferential surface of the drive roller 29. are respectively pulley 32
and an electromagnetic clutch 33 which is a clutch are attached. Further, a feed motor 34 which is a drive unit is provided, and a belt 37 is provided between a pulley 36 fixed to a motor shaft 35 of the feed motor 34 and the pulley 32.
is wound, and by connecting and disconnecting the electromagnetic clutch 33, power transmission from the feed motor 34 to the drive roller 29 is disconnected.

A guide plate 38 is provided between the flanged roller 13 and the feed roller 14 to guide the silver halide film 7 toward the feed roller 14. Further, a small-diameter nip roller 39 that resiliently contacts the outer circumferential surface of the drive roller 29 of the feed roller 14 is provided at the front side in the conveyance direction of the silver halide film 7.

In such a configuration, the silver halide film 7 pulled out from the film cassette 8 is conveyed along the conveyance path 10 and is irradiated with a laser beam at the exposure position 27 to write image information.

The silver halide film 7 on which image information has been written is cut into a predetermined length by a cutter 19 and discharged into a collection cassette 9.

Next, when setting the silver halide film 7, the silver halide film 7 pulled out from the film cassette 8 is brought into contact with the outer circumferential surface of the upper end of the flanged roller 13, and then moved along the guide plate 38 to the feed roller 14. At the same time, the tip of the silver halide film 7 is brought into contact with the abutting portion between the drive roller 29 and the nip roller 39. Here, since the silver halide film 7 is pulled out along the flanged roller 13, skew and meandering are prevented. Further, the leading end of the silver halide film 7 is guided by the guide plate 38 and moves straight, and while maintaining the straight movement, the drive roller 29 and the nip roller 3
It hits the contact part with 9.

Therefore, there is no need to insert the tip of the silver halide film 7 aiming at the abutment area between the drive roller 29 and the nip roller 39, and the silver halide film 7 does not curl up. The tip of the silver halide film 7 can be easily brought into contact with the contact portion.

After 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, the nip roller 30 is manually rotated along the conveyance direction of the silver halide film 7.

At this time, by disengaging the electromagnetic clutch 33, the drive roller 29 becomes freely rotatable, and as the nip roller 30 rotates, the drive roller 29 rotates integrally and lightly.

Furthermore, as the drive roller 29 rotates, the nip roller 39
rotate integrally, and the leading end of the silver halide film 7 is conveyed while being nipped by a drive roller 29 and a nip roller 39, and then conveyed while being nipped by a drive roller 29 and a nip roller 30.

Here, if the distance from the feed roller 14 to the main roller 18 is short, the nip roller 30 is subsequently manually rotated to advance the leading end of the silver halide film 7 to the main roller 18 position. On the other hand, when the distance from the feed roller 14 to the main roller 18 is long, feeding the silver halide film 7 by manually rotating the nip roller 30 is difficult because the tip of the silver halide film 7 is connected to the driving roller 29 and the nip roller 30. After that, the electromagnetic clutch 33 is connected and the drive roller 29 is rotated by the driving force from the feed motor 34, so that the leading end of the silver halide film 7 is advanced to the position of the main roller 18.

Moreover, since the electromagnetic clutch 33 is provided on the rotating shaft 31 of the drive roller 29 in each of the feed rollers 14 to 16, each drive roller 29 becomes rotatable by disengaging each electromagnetic clutch 33. Therefore, by disengaging all the electromagnetic clutches 33 when handling a jam, 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 explained based on FIG. 4. Incidentally, the same parts as those explained in FIGS. 1 to 3 are indicated by the same reference numerals, and the explanation thereof will be omitted. In this embodiment, a detector 4 is used to detect the presence or absence of the silver halide film 7 between the first feed roller 14 and the second feed roller 15.
0, and furthermore, the rotation of the drive roller 29 by the feed motor 34 is controlled by the first belt 41 and the second belt 4.
This is done using 2.

First, the detector 40 includes a rotatable lever 43 whose tip extends onto the conveyance path 10, a mechanical shutter 44 that rotates in conjunction with the rotation of this lever 43, and a transmission type photodetector. It is composed of an interrupter 45. When the leading end of the silver halide film 7 advances along the transport path 10 from the first feed roller 14 to the second feed roller 15, it comes into contact with the lever 43 on the way, and the lever 43 moves in the direction of arrow B.
rotate in the direction. Then, as the lever 43 rotates, the mechanical shutter 44 rotates in the direction of arrow B'.

Light from the light emitting section of the transmission type photointerrupter 45 is received by the light receiving section, and the silver halide film 7 is detected. Therefore, by connecting the electromagnetic clutch 33 based on the detection result of the detector 40, the nip roller 30
The silver halide film 7 can be fed by a predetermined dimension by manually rotating the film 7 , and then fed to the main roller 18 by the driving force of the feed motor 34 .

Note that in this embodiment, the wavelength range of light for exposing the silver halide film 7 used as a continuous recording medium is mainly 66.
0 to 840 nm, and the wavelength range of light emitted from the infrared LED built into the photointerrupter is 800 to 840 nm.
1l100n, so if the silver halide film 7 is directly irradiated with light from the photointerrupter, the silver halide film 7 will be exposed. Therefore, a detector 40 using a transmission type photointerrupter 45 is used. Therefore, when using a continuous recording medium that is not likely to be exposed to light emitted from the infrared LED built into the photointerrupter, it is easy to install and there is no need to contact the continuous recording medium. A type photointerrupter may also be used.

Further, the rotation of the drive roller 29 is driven by two belts 41.
42, the electromagnetic clutch 33 only needs to be provided on the rotating shaft 31 of the first feed roller 14 and the rotating shaft 31 of the second feed roller 15.

Effects of the Invention The present invention provides a clutch between the feed roller and the drive unit as described above, so that when the feed roller is manually rotated and the continuous recording medium is held between the feed rollers, the clutch is not operated. By cutting, the rotation of the feed roller can be easily performed with a small force. Furthermore, the guide plate that guides the continuous recording medium and the small-diameter nip roller that resiliently abuts on the outer circumferential surface of the feed roller can be easily rotated by cutting the feed roller. By providing it immediately before, it is possible to reliably feed the leading edge of the continuous recording medium toward the nipping position between the feed rollers, and therefore, when the feed roller is manually rotated, the continuous recording medium is This has the advantage of being able to reliably hold the objects.

[Brief explanation of the drawing]

Fig. 1 is a structural diagram showing a first embodiment of the present invention, Fig. 2 is a plan view showing the power transmission structure to the drive roller, Fig. 3 is an enlarged front view showing the feed roller section, and Fig. 4 The figure is an enlarged front view showing the feed roller section in the second embodiment of the present invention, FIG. 5 is a front view showing the feed roller section of the conventional example, and FIG. 6 is the front view showing the feed roller section of another conventional example. FIG. 7... Continuous recording medium, 11... Recording section, 14...
Feed roller, 19...cutting part. 33...Clutch, 34...Drive unit. 38...Guide plate, 39...Nip port applicant Ricoh Co., Ltd.

Claims (1)

[Scope of Claims] 1. A feed roller that rotates with its outer peripheral surfaces in contact with each other and pulls out and conveys a continuous recording medium wound into a roll, and a recording section that records image information on the continuous recording medium. and a cutting section that cuts the continuous recording medium at a predetermined position, wherein a clutch is provided between the feed roller and a drive section that rotationally drives the feed roller. 2. The recording apparatus according to claim 1, further comprising a guide plate that guides the continuous recording medium and a small-diameter nip roller that elastically contacts the outer circumferential surface of the feed roller.