JPS6343103A - Optical fiber device - Google Patents

Abstract

PURPOSE:To prevent a photosensitive body from appearance of uneven light on its surface by combining incident light beam from individual light sources upon individual optical fiber flux into one optical fiber flux on the way and radiating the optical beams from one light outgoing part. CONSTITUTION:Incident light beams from the light sources L1, L2 for two directions upon the optical fiber flux 1a, 1b are combined into one optical fiber flux 1c on the way and made incident from one light projecting part upon a liquid crystal shutter 2. Thereby, the quantity of incident light becomes the sum of the light sources L1, L2, so that >=2X10<5>lux light can be obtained even from two adjacent optical fibers. In case of utilizing the optical fiber device for an electronic copying machine, a light incident part of the optical fiber flux 1a is opposed to the light source L1 arranged in the copying machine body 11, a light incident part of the optical fiber flux 1b is opposed to the light source L2 arranged independently of the body 11 and the optical fiber flux 1a, 1b are combined as one optical fiber flux 1c on the way, so that light beams from the light sources L1, L2 are combined and radiated from one light outgoing part 1d to a liquid crystal shutter 2.

Description

[Detailed Description of the Invention] A. Purpose of the Invention [Field of Industrial Application] The present invention 1 is applicable to an optical fiber device for transmitting optical information, such as transmitting optical information to a liquid crystal shutter in a copying machine. This invention relates to optical fiber equipment.

[Conventional technology]

A printer consisting of a liquid crystal shutter and its driver/controller was considered as a means to double as an output terminal device (printer) for a copying machine that has an electrophotographic process such as a photosensitive section, a developing section, a fixing section, an ftf' electric section, and an image processing section. It is being When using a nematic liquid crystal as a shutter, in order to obtain a sufficient amount of transmitted light and a sufficient S/N ratio, the light source L inside the copying machine must be
A light source L2 is provided above the liquid crystal shutter separately from the light source L, and each part of the light source L2 is emitted to the liquid crystal through separate optical fibers.

[Problem that the invention seeks to solve]

As the light source LL in the copying machine main body, a halogen lamp or fluorescent lamp of about 100 to 200 W is used depending on the sensitivity of the photoreceptor.

However, although the required illuminance of 2 x 1051 ux or more is obtained at the light output part of each individual fiber in the east of the optical fiber, the amount of light is small in the gaps between the individual fibers, so the illuminance is less than the above, and the difference between bright and dark is This may cause image quality to be disturbed due to light unevenness.

Therefore, the separately provided light source L2 is required to have a power of about 100 to 300 W, but in this case, the light source L1 inside the copying machine main body is wasted.

The present invention aims to solve the above problems.

B1 Structure of the Invention [Means for Solving Problems] The present invention is such that the light incident on the different optical fiber bundles 1 as 1 b from the different light sources L1 and L2 is connected to one optical fiber bundle from the middle. Combined with 1c and released as one? This is an optical fiber device characterized in that radiation is emitted from 11d.

[For production]

The lights Ll and L2 in two directions that are incident on each separate optical fiber east 1aφlb are merged into one optical fiber east 1c from the middle and are incident on the liquid crystal shutter 2 from one light output part. This is the sum of the light amounts of the light sources LlφL2, and a light amount of 2×1051 ux or more can be obtained even with the same dirt floor of adjacent fibers.

〔Example〕

When the optical fiber device of the present invention is used, for example, in the electronic copying machine shown in FIG.
The light incident part b is a light source L provided separately from the main body of the copying machine.
2, and the fiber bundles 1a and 1b are connected to 1 from the middle.
This becomes a real optical fiber east IC, and the lights from the light sources LL-L2 are combined and emitted from one light emitting part 1d to the liquid crystal shutter 2.

In FIG. 2, 3 is a circuit for driving the liquid crystal shutter, 4 is a driving power source, 5 is a resin or metal tube for bundling and fixing optical fibers, and 6 is a socket.

Reference numeral 7 denotes a fiber east support member of the light emitting portion, and 8 a box or cassette having a fiber east fist liquid crystal cell assembly portion, etc., which can be attached to and detached from the document table 17. 9 is box 8 and document table 17
A connecting member 10 is a slidable plate that serves as a light shielding member when used as a copying machine. 11 is a part of the copying machine body, 12 is a light source installed inside the copying machine body, a reflector for L1, 13 is a reflector for light source L2 provided separately from the copying machine, 14 is a SELFOC lens, and 15 is a It is a photoreceptor.

When used as an output terminal device, a latent image is formed on the photoreceptor 15 in response to opening and closing of the liquid crystal shutter 2 operated by the power supply and circuit 4 for driving the liquid crystal. A latent image formed by opening and closing the liquid crystal display 2 on the photoreceptor 15, which has been given photosensitivity by charging, can be formed into a clear image through the processes of development, transfer, and fixation, and is not left on the photoreceptor 15. The developer is cleaned by the cleaner section, but in these electronic photocopying units,
(Each device in the process has been omitted.

C. Effects of the invention Unlike the conventional case where the light from two light sources is emitted to the liquid crystal shutter using separate optical fiber bundles, the light from the two directions is combined from the middle and the sum is output from one optical fiber east. Since the light is emitted from the end, the amount of light in the gaps between the individual fibers also increases.1For example, when applied to a copying machine as in the embodiment, the light source L1 has a power of 200W and the light source L2 has a power of 50 to 10W.
Even if a QW halogen lamp is used, illuminance of 2 x 10'lux or more can be obtained even in the gap. If each part has an illuminance above the above level, it will not appear as light unevenness on the photoreceptor.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of the present invention, and FIG. 2 is a vertical sectional view of a portion of a copying machine to which the present invention is applied. Ll/L2...Light source, la/lb*1c...Bundle to optical fiber, 1d...Light output part, 2...Liquid crystal shutter.

Claims (1)

[Claims] (1) An optical fiber device characterized in that light entering different optical fiber bundles from different light sources is merged into one optical fiber bundle from the middle and is emitted from one output part.