JPS61175657A - Recorder - Google Patents

Abstract

PURPOSE:To obtain a recorder with a printer function by using one common exposure light source for a copying machine and a liquid-crystal shutter unit. CONSTITUTION:A liquid-crystal shutter array 5 is arranged halfway between an image forming lens 4 and a light diffusing plate 6 and converts light from the exposure light source into a signal of light generated by the opening and closing of a liquid-crystal shutter. The recorder, therefore, functions as a printer. When the recorder which operates as a copying machine is switched to the printer function, an original platen 8 and the image forming lens 9 are detached and the liquid-crystal shutter unit which includes an up/down counter array 5, an image forming lens 4, and a light reflecting plate 6 is mounted to easily obtain the printer function.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to the structure of an exposure light source portion of a recording device that combines a copying device using electrophotography and a liquid crystal shutter unit and exhibits a copying function or a printer function.

[Conventional technology]

Conventionally, in a recording device that has a printer function by installing a liquid crystal shutter unit in a copying device using electrophotography, the exposure light source part of the components of the copying device is not used as is. It has been common practice to combine a newly designed liquid crystal shutter unit, which includes an exposure light source component that performs the same function as the other components, with the copying device [Problem to be solved by the invention] However, the above method When modifying a copying device that uses electrophotography into a recording device with a printer function, the copying exposure light source component installed in the copying device is removed, and a newly designed liquid crystal display is installed in the empty space. In order to attach the shutter unit, not only components related to the light source such as the exposure light source 9 reflector are wasted, but also a completely new liquid crystal shutter unit is designed, which increases the time and cost required for the design. Furthermore, there is a problem in that the size of the mechanical body serving as a recording device equipped with a printer function becomes large.

[Means for solving problems]

Therefore, in order to solve the conventional drawbacks, the present invention utilizes the parts related to the exposure light source of the copying machine as they are, and adds some new parts related to the liquid crystal shutter array to realize a recording device with a printer function. It is.

〔Example〕

Hereinafter, a recording apparatus according to the present invention will be explained with reference to the drawings.

FIG. 1 shows a plan view of an optical writing section of a recording apparatus according to the present invention.

1 is a reflecting mirror, 2 is an exposure light source, 5 is a photoreceptor, 4 is an imaging lens, 5 is a liquid crystal shutter array, 6 is a light diffusion plate, 7 is a fixing member, 8 is a document table, and 9 is an imaging lens. be.

The original platen 8 and the imaging lens 9 are components that need to be installed when the recording apparatus according to the present invention is used as a copying apparatus, and are illustrated by two-dot chain lines.

The reflecting mirror 1 has an inner surface 1α subjected to a mirror finish, and is equipped with a light diffusing plate in order to efficiently transmit light energy emitted from an exposure light source 2 made of a light emitting element such as a halogen lamp, a fluorescent lamp, or an LID array to the photoreceptor. The inner surface shape is designed so that the focus is almost on the uneven surface of 6. The concave and convex surface of the light diffusing plate 6 is arranged so as to roughly match the surface of the document table 8.

The liquid crystal shutter array 5 is arranged between the imaging lens 4 and the light diffusing plate 6, and converts the light from the exposure light source into a light signal by opening and closing the liquid crystal shutter. Contribute to fulfilling the function of The imaging lens 4 is arranged so that its two focal points are the surface of the photoreceptor 3 and the liquid crystal shutter array. Furthermore, the imaging lens 4 used has a shorter focal length than the imaging lens 8 used in the copying machine. Furthermore, a liquid crystal shutter array5.
Imaging lens 4. The light diffusing plate 6 is formed into a unit with its mutual positional relationship being defined by a fixing member 7. Therefore, when changing the state in which the recording device according to the present invention is used as a copying device to the state in which it is used as a printer, the document table 8 and the imaging lens 9 are removed, and the liquid crystal shutter array 5° imaging lens 4. 8 liquid crystal shirts including a light reflecting plate 6;
A light reflecting plate may be placed at the position of the light diffusing plate 6 in FIG. 1, which can be easily realized by attaching a tar unit. Whether to use a light diffusion plate or a light reflection plate is selected depending on the amount of brightness unevenness of the exposure light source 2 and the balance with the brightness. In addition, the distance @1 between the exposure light source 2 and the light diffusing plate 6 should be at least 40 mm in order to suppress uneven illumination on the surface of the document placed on the document table 8 in a copying machine that uses a non-volatile lamp as the exposure light source. [Effect] Figure 2 is a diagram of the optical writing section of a newly designed conventional liquid crystal shutter unit installed in a copying machine using electrophotography and equipped with a printer and a recording device. shows.

First, it is clear from the comparison with the figure that in the recording device according to the present invention, the thickness of the recording device according to the present invention is increased by the thickness t of the light diffusing plate or the light reflecting plate compared to when used as a copying device. Therefore, it can be used as a recording device with a printer function, and has a great effect on reducing the size of the device (which would be thicker in the conventional method).

In addition, the exposure light source-related parts of the copying device do not have to be newly designed, but can be used in their existing state and can be given a printer function, which greatly reduces the design and manufacturing steps, resulting in a low-cost recording device with a printer function. It becomes possible to supply

Furthermore, since the exposure light source components are shared, the number of components is reduced, and the product can be changed from a copying device to a recording device with a printer function, or vice versa. Therefore, it is expected that the above-mentioned changes, which could only be made at the factory that manufactures the recording apparatus, will be able to be easily made by the person using the recording apparatus according to the needs of the time.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional WJ diagram of an optical writing section of a recording apparatus according to the present invention. Figure 2 is a cross-sectional view of the optical writing section of a conventional recording device.
...Reflector 1α ...Reflector inner surface 2 ...Exposure light source 3 ...Photoreceptor 4 ......・・Imaging lens 5・・・・Liquid crystal shutter array 6・・・・
...Light diffusion plate 7 ...Fixing member 8 ...... Document table 9 to be attached when the recording device is used as a copying device . . . Imaging lens 10 to be attached when the recording device is used as a copying device . . . Fixed member first concave

Claims (1)

[Claims] In a recording device that has a liquid crystal shutter unit removably mounted on a copying device using electrophotography, and exhibits a printer function or a copying function depending on whether or not the liquid crystal shutter unit is installed, the exposure light source of the copying device and the liquid crystal shutter A recording device characterized in that a unit uses a common exposure light source.