JPS62184867A - Recorder with pressing member at recording part - Google Patents

Abstract

PURPOSE:To enable a recording medium to be easily inserted into a recording part, by providing a mechanism whereby a pressure exerted by a pressing member for pressing the recording medium against the recording part can be varied. CONSTITUTION:A photographic printing paper is fed in the direction of an arrow A by feeding rollers 5, and is guided by a guide plate 6 into a gap between a pressing plate 2 and a recording part 1a of an FOT 1. Immediately before this time point, the leading end of the paper is detected by a photosensor 11, when a moving mechanism 8 is operated to retract the plate 2 from the recording part 1a, whereby the pressure exerted on the surface of the FOT 1 is reduced to zero, and a gap is formed between the plate 2 and the recording part 1a. The gap is preferably about 0-6mm. Therefore, the leading end of the paper being fed is easily guided into the gap between the recording part 1a and the plate 2. The pressing plate 2 is retracted from the FOT 1 when the paper approaches the plate 2, thereby enabling the paper to be easily introduced, and the plate 2 presses the paper against the FOT 1 when the paper is located just on the front side of the recording part 1a of the FOT 1. Accordingly, the paper is securely guided into the gap between the recording part and the pressing plate, and is securely pressed against the recording part.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a recording device for recording information such as characters and images, and particularly to a recording device having a pressing member in a recording section.

[Prior art]

This type of recording device uses an FOT (fiber optical tube) as a recording member, and moves a photosensitive material as a recording medium on the front surface (fluorescent surface) of the FOT, and uses the image, etc., printed by the FOT to expose the photosensitive material. There is an apparatus that exposes a material to light and then processes the photosensitive material such as development and fixing to obtain visualized information.

FIG. 4 is a diagram showing the mechanism of the exposure section which is the recording section of this device. 1 is the above-mentioned FOT, and a press plate 2 is mounted on the front surface (fluorescent surface) of the recording section (fluorescent section) la. It is crimped by a ffEi spring 3.

4 is a spring receiver fixed to the device.

The photosensitive material (photographic paper) is fed by the conveying roller 5 through the path shown by arrow A, guided by the guide plate 6, enters between the recording section 1a of the FOTI and the pressing plate 2, and bites into the exposure roller rough. , since it is not pulled downward by the exposure roller 7, it is exposed by the fluorescent surface of the recording section 1a.

However, in this mechanism, since the pressure of the press plate 2 is constantly applied to the recording section, it is difficult to insert photographic paper between the recording section 1a and the press plate 2. This is thought to be due to variations in the stiffness of photographic paper and also to the fact that the frictional force of photographic paper changes depending on humidity.

Also, if these things cause a jam in the exposure section, the device must be opened and the jammed photographic paper removed, but in this case, one or more sheets of photographic paper in the device will be exposed, Sometimes photographic paper was wasted.

For this reason, precision is required to adjust the mechanical parts, especially the angle adjustment of the guide plate 6, but each time the device is operated, it also needs to be adjusted depending on the climate, and mass production I wasn't suited for sex at all.

In addition, in the above-mentioned mechanism, the pressing plate 2 is always pressed by the spring 3, so the pressing force cannot be adjusted, and the leading edge of the photographic paper may be damaged when it bites, causing problems with recording quality. There were cases where this occurred.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a recording device that allows a recording medium to be easily inserted into a recording section, thereby avoiding the above-mentioned problems.

[Structure of the invention]

To this end, the present invention is configured to have a mechanism that can change the pressing force of the pressing member that presses the recording medium onto the recording section.

〔Example〕

Examples of the present invention will be described below. FIGS. 1 and 2 show an embodiment thereof, and are diagrams showing the mechanism of the exposure part. In these figures, the same parts (those with the same functions) as those in the mechanism described above are given the same reference numerals.

8 is a pressing mechanism that presses the pressing plate 2 against the recording section 1a of the FOT 1;
U-shaped holder 8 that guides a movably in the axial direction
b, collar 8C formed on the holder 8b and piston 8a;
and a compression spring 8d inserted through the piston 8a between the piston 8a and the piston 8a.
The tip of a is in contact with the back surface of the press plate 2. One pressing mechanism 8 is provided at each end of the pressing plate 2.

10 is an example of a moving mechanism for moving the pressing plate 2, that is, a mechanism for changing the pressing force of the pressing member 2, and includes a solenoid 10a attached to the substrate 9 and an L fixed to the piston 10b of the solenoid 10a. Ukane 10c
The L metal fitting 10c is fixed to the back surface of the pressing plate 2.

Furthermore, in this embodiment, the photographic paper is conveyed from the bottom to the top, so that the upper end portion of the guide plate 6 provided on the lower side, that is, the vicinity of the biting part into the press plate 2, is transparent. A type photosensor 11 is provided, and a transmission type photosensor 12 is also provided on the exit side of the exposure roller. Note that the photographic paper may be conveyed from the top to the bottom.

Here, the movement of the photographic paper will be explained with reference to the flowchart shown in FIG. Photographic paper is conveyed by rollers 5, and when one of the photosensors 11 detects the leading edge of the photographic paper, the exposure roller 7 starts rotating and the solenoid 10a of the moving mechanism 10 is energized to move the press plate 2 away from the FOTI. Move it away so that no pressure is applied to the FOT tube surface when the photographic paper enters. Next, when the other photosensor 12 detects the leading edge of the photographic paper, the rotation of the transport roller 5 is stopped, the solenoid 10a is demagnetized, the press plate 2 is returned to its original position, and the necessary pressure pushes the photographic paper onto the FOT tube surface. Becomes forced to. Although a control circuit for realizing this operation is configured, it is not shown.

Now, the photographic paper is fed in the direction of the arrow A by the conveyance roller 5, guided by the guide plate 6, and pressed against the press plate 2 and F.
The tip of the OTI gets wedged between the recording section 1a, but just before that, the photo sensor 11 detects the tip, so the moving mechanism 8 works at this point, and the press plate 2 retreats from the recording section 1a, so that it touches the surface of the FOT tube. This pressure is reduced to zero, and a gap is created between the pressing plate 2 and the recording section 1a. This gap is O~6
About m+a is good. Therefore, the leading edge of the advancing photographic paper easily enters between the recording section 1a and the pressing plate 2.

Then, as the conveyance by the conveyance roller 5 progresses, the leading edge of the photographic paper bites into the exposure roller rough, and the upper photo sensor 1
2, when the tip is detected, solenoid F' 10 a
is demagnetized and the pressing mechanism 8 returns to press the pressing plate 2 against the recording section la side, so that the photographic paper interposed therebetween is accurately pressed against the front surface of the recording section 1a and comes into close contact with it. , and in this state, it is transported by an exposure roller. During this transportation, the recording section 1a exposes the recording section 1a.

As described above, the pressing plate 2 retreats from the FOTI when the photographic paper approaches the pressing plate 2, making it easier to receive the photographic paper, and so that the photographic paper is completely positioned in front of the recording section 1a of the FOTI. Since the photographic paper is pressed in the FOT1 direction at the point in time, it is ensured that the photographic paper digs in and is pressed against the recording section, and there is no need for detailed adjustment at this time.

Furthermore, in this embodiment, since the solenoid 10a is not excited during the exposure operation by the FOT, the magnetic field does not affect the FOT screen, and during the period when the solenoid 10a is energized, the lower photosensor 11 detects the Since it takes an extremely short time until the photosensor 12 on the rear upper side detects it,
The power consumption is small, and F while not energized.
The recording section of the OT is now protected by the press plate 2.

In the above embodiment, the pressing plate 2 is moved by a moving mechanism 10 that is separate from the pressing mechanism 8 that presses the pressing plate 2, but the solenoid attracts the pressing spring and the FOT It is also possible to change the pressure on the tube surface so that the spring force does not act on the pressing plate, or even if it does act, it is weaker than usual.

This may be achieved by, for example, configuring the collar 8C of the pressing mechanism 8 of this embodiment to be pulled in the direction of retreating from the pressing plate 2 using a solenoid.

Further, in this embodiment, an FOT is used as the recording member, but a cathode ray tube, a thermal head, or a combination of an LED array light source and a liquid crystal shutter may be used as the recording member.

Furthermore, as the recording medium, in addition to photographic paper, it is also possible to use plain paper, X-ray photographic film for recording latent images, dry silver negative film, positive film, thermal paper, thermal ribbon, etc.

Further, in the above embodiment, a solenoid is used as the moving mechanism, but it is also possible to use a motor to move or pull the pressing plate 2 or the pressing spring with a worm gear, a spur gear, a cam, or the like.

〔Effect of the invention〕

From the above, according to the present invention, the recording medium is placed between the recording section and the pressing member because it is configured to have a mechanism that can change the pressing force of the pressing member that presses the recording medium onto the recording section. It becomes possible to make it easier to insert the recording medium, and this is the same even when the quality of the recording medium changes. Furthermore, adjustments during production are easy, and maintenance is free.

[Brief explanation of drawings]

FIG. 1 is a side view of a mechanism of an exposure portion of a recording apparatus according to an embodiment of the present invention, and FIG. 2 is a view showing a top surface of the same mechanism.
FIG. 3 is a flowchart of the operation of the exposure section, and FIG. 4 is a side view of the mechanism of the exposure section of a conventional recording apparatus. 1...FOT, 1a...recording part, 2...crimping plate,
3...Spring, 4...Spring receiver, 5...
- Conveyance roller, 6... Guide plate, 7... Exposure roller, 8... Pressing mechanism, 9... Substrate, 10... Moving mechanism, 11.12... Photo sensor.

Claims (2)

[Claims] (1) In a recording device that records information on a recording medium by moving the recording medium along a recording section of a recording member, a pressing member that presses the recording medium against the recording section; What is claimed is: 1. A recording device having a pressing member in a recording section, the recording device having a mechanism that can change the pressing force of the member. (2) A recording device having a pressing member in the recording section according to claim 1, wherein the pressing force is changed to zero.