JPS59170833A - Film presser member of electrophotographing device - Google Patents

Abstract

PURPOSE:To prevent the deterioration of performance of a film by cutting off light by a film presser member except at a part corresponding to a light transmission window. CONSTITUTION:A transparent body 6 is provided as the film presser member 6 corresponding to the light transmission window of an electrifying exposure part 1, and an elastic body 11 is arranted corresponding to a development part 2 adjoining to the electrifying exposure part 1. The transparent body 6a and elastic body 11 are both fixed to the same base 12 and light shielding films are adhered to both end surfaces of the transparent body 6a. The elastic body 11 is provided to improve the contacting of the film 3 with a pressure part 1a in order to prevent a leak of a developer during the development at the development part 2 and projects slightly from the transparent body 6a arranged adjacently, securing the contacting of the film 3 with the presser part 1a by the restoring force of the elastic body 11 while pressed against the film 3.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides an electrophotographic system in which a film is charged, exposed, developed, and fixed in an exposure section of a processing head that performs all of charging, exposing, developing, and fixing a film.
When performing exposure to record the entire original image and projection of the entire recorded image onto a screen, etc., be careful not to leak images other than the relevant frames of the film, especially those that are intense during projection. The film press is 814 months long and all light means are applied.

The principle of the electrophotographic device used for microfilm is to charge a photoconductive insulating transparent film in a --like manner, and then to produce a fully illuminated image of this charged image, which corresponds to the original image. '4 mouths in the pattern.

The charge is removed, all of the charged toner is adsorbed to the remaining W'iiJ, #J pattern on this film, and development is performed.Then, the toner is fixed and image recording is completed. , Treated soil called fixation 4-': □ 〒 Negative °. 1 This electrophotographic device differs from ordinary photographic devices that use silver salt photographic materials as all photosensitive materials, and has the following features. That is, Noil 1 used in electrophotographic devices. , (r;
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l hner→1. If you drop it, you can use it again, Shinnohara 1
iii) Images can be recorded by exposure, development, and constant exposure. This]'(-me, there's bamboo in the unrecorded frame +i!u
The additional record of recording the I army cannot be used once it has been exposed to light or has been exposed to light. Salt photographic material: ((7) With the photographic device 61 used, +, J, When changing the film, storage special (C) Horizontal = 4 at the time of projection, there is absolutely nothing, and Ia groans and sews in vain. In contrast to +jJ function 1/C1IL, 'electrophotography/printing 1''1'' allows reuse of the filter as mentioned above, so it is very easy to use.

1/This is a film used in electronic 'ij-shell devices.
, 1, · Width 1 Pressure 5:i, The interval until TItpJ spontaneously dies is short, so it is necessary to reach constant A] before the charge disappears, so it is necessary to There is a requirement that the process be completed within a short period of time.

U) Things that meet the requirements 1-Charging, path light, development,
It is equipped with a processing head that sequentially performs fixing at 7 times.Charging, exposure, development, and straightening are performed at the same time in each part of the processing head in this (1) processing - \filtration that moves all the way. A method is proposed.

Here, the above-mentioned process will be explained based on a specific example of LAD shown in FIG. , Figure 1 shows processing-, fireflies c3 among Rad.
- The exposure section 1 and the development section 2 are shown.

The charging of the film 3 is caused by a corona'(:t7'C-1
':;' p:, and then, at the same position, the light emitted from the lens 5 is directed onto the original gold film 3 to perform light scavenging to create a residual "u4 pattern that corresponds to the original image." After this, the entire film 3 was moved by one frame and the exposed frame was applied to the developing section 2, and it worked.

The toner is applied to the surface of the U-charged toner film 3 in the image section 2 for development. In this case, in the charging/exposure section 1, the position of the film 3 and the processing head must be carefully adjusted and the film 3 should be kept flat. In order to prevent leakage, the soil rem 3? f: A flat film pressing member 6 for pressing against the processing head is arranged. Place the weighing/exposure section 1 in place, light the Fitzlem holding member 6, and place the recorded image already recorded on the filter 3 on the opposite side of the exposure lens 5. A lens 7 and a projection lens 8 are provided for projecting the image.

The reason why a processing head with such a structure is made is as follows: When the snoring device I'j'VC is used,
Due to the way the light is projected and the light is emitted from both sides of the clothes of Firrem holder 6,
I wonder if there is any peace of mind that this film holding member 6 is entirely transparent.
If you tase it, you'll end up losing money, which is a shame.

However, the illuminance of the film surface during projection is
It becomes much stronger, about 10 lux. Therefore, when projecting (bow, this throw i, if another frame is exposed to intense light due to light leakage in addition to the target frame of ζ7, and the frame adjacent to % is an unrecorded frame mentioned in i!1) However, due to the leakage irradiation of intense external light during projection, light fatigue and photobleaching occur in the adjacent frames, resulting in a deterioration in the quality of the film 3.

Therefore, in consideration of the above-mentioned drawbacks, the present invention provides a processing head with a structure in which exposure and projection are performed by the same tFXVC in the exposure section, etc., and in order to prevent the performance deterioration of the film, light leakage is prevented. +51-4 The entire purpose of providing a film holding member for an electrophotographic device, which is provided with a metal blocking means for stopping the film.

The present invention which achieves this objective includes a processing head having an exposure section that performs exposure and projection and a light transmission window through which the entire front film passes, and a processing head having the above-mentioned structure on the front surface of the processing head where the original transmission window is located. In an electrophotographic apparatus having a film pressing part ladle that holds the entire film valve, an opening or a transparent part is formed entirely corresponding to the light transmitting window, and the V part other than the opening or the four transparent parts completely prevents leakage to the above film. The film 11 () of the JJ true device, which has all the characteristics of 2 and the optical properties 'tB-Kitaseta, is also available.

The present invention will now be described in detail with reference to FIGS. 2 and 3. However, considering Figures 2 and 3,
The same parts as in Fig. 1 are given the same reference numerals. Figure 1 shows charging and dew in the processing head (1 part 1, developing part 2, and part 7).
However, the reason for Figure 2 (a) is: 1. @)'
11 children of e part J8 and phenomenon part 2, film: (of,
r < 1ffi fl This is the entire processing head [from the river], which also contains a drying process for drying the deposited toner liquid, and a fixing process for fixing the toner using heat. i'< l~.The front side of the processing head has 4 lines A7--To this processing, RAD V-C band'--exposure, development, and fixing--are performed. The processing head V
The pressing film 3-+4r-, 3-layer 6 is the actual length of the film 3-+4r-, 3-layer film 6, which covers the charging/two-layer optical fiber 1a and the developing section 2 in this example. This film pressing member 6 (1., i4; the position of the film 3 in the 7th generation ISl by Den and Fuki) is necessary for the second time, and the paddy,
1. Elephant W2 [It is a toner, Ij''ja+J1. It is necessary for preventing leakage of image liquid.

The film holding part I6 is formed in the shape of a lower plate of a metal that destroys the light blocking property or a plastic that is completely transparent, and the part that corresponds to the light transmitting window of the charging/exposure part l of the processing head has an opening 11. There is only one. As the film holding member 6, there are two sets of shavings 7 (Fig. 2 (1)), in which the film side of a transparent body 6a such as glass is completely plated with a metal 6b that has a light-reflecting property, or is made of a transparent material 6b that has a light-reflective property. Paints to be published (Painted ones are also acceptable. In the case of a transparent 1 piece 6a gold filter holding member 6, the part corresponding to the light transmitting window of charging/exposure: jl>1 naturally becomes a bright part A because of metal plating or wall covering, and there is no glare film. 4).

Figure 2 (b) VC, as shown in the example shown, handle the film side of the transparent body 6a, the metal, the hook 6b, and the paint. This is to prevent the source from leaking from the film side VC through the inside of the body 6a.

Fig. 3 Electrification and dew as μ film presser N material 6
Transparent bodies 6a such as glass are placed in correspondence with the light-transmitting windows of the main part 1, and elastic bodies 11 such as combs are placed in correspondence with the current woodland area 2 which is located next to this electrification/exposure part 1. There are 7 examples of how to set it up. Both the transparent body 6a and the bullet 1 (11) are fixed on the same base 12. In order to prevent damage, a film of light 1:3 is applied to both end faces of the transparent body 6a.
z: If the elastic body 11 has a light intensity of all 1f-, the morning light adhering to the elastic body 11 will be omitted.
I can do that. In addition, the bullet 11 has one prefecture in the developing section 2f/coin 7, and there is a leakage of the developer (c lXl ll
-, #Rudame is designed to ensure good adhesion of the film 3 to the pressing portion 1a, and has a 144 momme arrangement.
1. The film 3 is slightly protruded from the transparent body 6a. ．． When the film 3 is applied to the applied part 1a, the force V of the elastic body 11 is applied to the applied part 1a.
-I am. In this case, the transparent body 6a.

Also, make one movement to press the film 3 well against the pressing portion 1a.

In the above embodiments, the aperture metal is concentrated on metals and plastics that have negative or optical properties, and the metal 6b or paint that completely destroys the optical properties is applied to a transparent body 6a such as glass, except for the transparent part,
The elastic body 11 was placed in close contact with the transparent body 6a with the shimmering film 13 on both ends of each loaf, but light did not enter the opening or transparent portion of the film pressing member 6 corresponding to the light transmission window. It is possible to apply bending, this opening, or a structure in which the film holding member 6 other than the transparent agent has a light blocking property to prevent light from leaking into the film 3 (f; [God's modification example is applicable).

In this way, the film holding member 6' (rlX), which has a luminous property and prevents light from leaking to the film 3 other than the one frame portion that hits the light-transmitting window, Even if the lamp 8'?lr is turned on and strong light is irradiated onto the film 3, there will be no light leakage to other parts of the film other than the part that hits the light transmission window. Even if the adjacent frame is an unphotographed frame, there is no light irradiation to this part, and there is no worry that the performance of the film 3 will deteriorate.

In the above embodiment, the film pressing member 6 is
The length corresponding to J12 part L and developing part 2 is 7, but this length can also be extended to WS9 and constant Δ1 part 10:. In addition, even if six film holding members are provided exclusively for the charging/exposure section l, excluding the current gap section 2, the film other than the portions that are safe for exposure must be exposed to at least 1 or more light for projection.
It is necessary that the area of the film holding member 6 other than the part corresponding to the light transmission 4 be 71≦.

Band..., ・For the incidence of light in the exposure section 1, Fukiyoshi V
In this case, the light is incident on the film 3 from the discharge electrode 4 side, and in the case of the projection V, the film pressing member 61141.1
We have explained an example in which light and sound are incident on the film 3, but the position of the lens 5, the projection lens 8, and the position of the lens 7 are changed, and the principal input is made from the film side at the time of shooting. The present invention is also applicable to examples.

As embodied in the above embodiments, according to the present invention, light leakage during projection exposure is eliminated by providing light blocking to the film holding member other than the portion corresponding to the light transmitting window. , there is no need to worry about photo fatigue or photobleaching of the film, completely preventing any deterioration in film performance.

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view showing a part of a conventional processing head, FIGS. 2 and 3 are examples of the film holding member according to the present invention, and FIG. 2(a) is a front view of the processing head as seen from the front. Figure 2 (+) is a side sectional view showing an example of a film pressing member, and Figures &' and 3 are partial sectional views showing one specific example. In the drawing, 1 is a charging/exposure section, 2 is a developing section, 3 is a film, 6 is a film holding member, 6a is a transparent body, 6b is a metal, 8 is a projection lamp, and 11 is an elastic body.

Claims (1)

[Scope of Claims] (]) A process for exposing and projecting light by providing a light transmission window through which the entire front film passes, and also for exposing the can material to an exposed part.
-h light distribution transmission i'J k upper dC on the front of the processing head including
1 film? In an electrophotographic apparatus in which the film holding part is pressed against the film, an opening or a transparent part is formed corresponding to the above-mentioned light transmission; ? A+::Report 11- A film holding member for an electrophotographic device, characterized in that it has a toothpick and optical properties. (2) Specified line 108 "j Scope of requirements: Insert the film presser blade of the electrophotographic device i':i: described in item 1 into the opening [" or the light-shielding property other than the transparent part.] ]Filno/retainer member made of metal, solarnac, or glass. (3) In the film pressing member of the electrophotographic apparatus according to claim 1, the opening or. A film holding member made of an elastic material corresponds to the adjacent developing area except for the bright area.