JPS63116117A - Printer - Google Patents

Abstract

PURPOSE:To deflect the titled printer by small space, by providing plural light guiding parts in which the end face and the other end face are arranged linearly and circularly, respectively,and a polarizing part in which a reflecting part for rotating centering around the end face of the light guiding part, which is arranged circularly. CONSTITUTION:A rotary reflecting mirror is installed on the axis of a motor so as to make an angle of 45 deg. with the axis, as a rotary reflecting part 9. 2,000 pieces of plastic fibers of 100mum diameter are bundled as a light guiding part 10, one end thereof is arranged linearly, and the other end is arranged and installed circularly by the same sequence so that its sequence can correspond to the fiber end which is arranged linearly. In case of such a printer, an emitted light from a laser diode 8 is changed as to its course by 45 deg. by the rotary reflecting mirror toward the motor axis direction, made incident on the optical fiber end placed on the same plane as a reflecting point, and emitted from the other end of the fiber. This emitted light erases a charge of a photosensitive drum 1 and goes to an electrostatic latent image, and thereafter, printed by a well-known method. When a feed paper speed and a motor revolving speed are synchronized, one rotation of the motor and one line on the photosensitive drum coincide with each other, and information can be printed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a printer whose main components include a photosensitive section, a light source section, and a deflection section.

[Summary of the invention]

The present invention includes a plurality of light guide parts (for example, light guides) whose end faces are arranged in a straight line and the other end faces are arranged in a circular shape, and a reflecting part that rotates around the center of the end face of the light guide parts arranged in a circular shape. This allows conventional printers to be made smaller.

[Prior art]

As shown in Figure 2, a conventional printer has a photosensitive drum 1.
, charger 2, developer 3, transfer device 4, Fθ lens 5, polyhedral rotating mirror 6, coupling lens 7, semiconductor laser diode 8
is the main component.

Recently, the market for this printer has expanded in the rapidly growing field of office automation equipment due to its ability to print high quality and high speed on plain paper.

[The interlayer point that the invention attempts to solve]

However, conventional printers like this cannot have a large deflection angle, and in order to obtain the necessary deflection, it is necessary to
This has the disadvantage that the distance between the θ lens or polyhedral rotating mirror and the photosensitive drum increases, resulting in an increase in the size of the device. Additionally, there are layout limitations due to the fact that the light travels straight.

The present invention is intended to solve these drawbacks, and its purpose is to provide a compact, high-quality printer by improving the deflection section.

[Means for solving problems]

The printer of the present invention is characterized by having a plurality of light guide parts whose end faces are arranged in a straight line and the other end faces arranged in a circular shape, and a polarizing part in which a rotating mirror is installed at the center of the light guide parts arranged in a circular shape. do.

This will be explained in detail below using examples.

〔Example〕

A printer was assembled using the configuration shown in Figure 1. In FIG. 1, a photosensitive drum 1, a charger 2, a developer 3
, transfer device 4, rotating reflection section 9, light guide section 10, coupling lens 7
and a semiconductor laser diode 8, respectively.

9. The conventional parts were used as they were except for the rotating reflection part and the light guide part in 10.

In this example, a rotating reflector was installed as the rotating reflector 9 on the axis of the motor so as to form an angle of 45 degrees with the axis. As the light guide part 1o, 2000 Plus Deck fibers with a diameter of 100 μm are arranged, as shown in Fig. 1, one end is arranged in a straight line, and the other end is arranged in a circular shape in the same order so that the order corresponds to one end of the fibers arranged in a straight line. Arranged and installed.

In the printer configured in this way, the light emitted from the laser diode 8 is directed in the direction of the motor axis, the course is changed by 45 degrees by the rotating reflector, and the light enters the end of the optical fiber, which is placed on the same plane as the reflection point, and enters the fiber. and is emitted from the other end.

The emitted light erases the charge on the photosensitive drum 1, forming an electrostatic latent image. The subsequent steps can be carried out up to printing using known methods. By appropriately synchronizing the paper feed speed and the rotational speed of the motor, one revolution of the motor coincides with one line on the photosensitive drum, and information can be printed by sending an appropriate optical signal.

This is the principle of the present invention, and although only one method is shown in FIG. 1, quartz fibers, multi-component glass fibers, etc. may also be used as the light guiding section. Further, a lens array may be provided at the output end of the light guide section to prevent the light from spreading at the output end, or a prism or the like may be used as the reflection section.

〔Effect of the invention〕

FIG. 1 is an example of the layout of the present invention, and since the present invention uses an optical fiber or the like for the light guiding portion, the light source can be placed at any location, making it flexible.

As a result, the printer can be made more compact without being subject to layout restrictions (deflection can be done in less space).Also, compared to conventional rotating polygon mirrors, the reflective section of the present invention can be made smaller, and the motor The load can also be reduced.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of the printer/tar of the present invention. Figure 2 is a schematic diagram of a conventional printer. 1... Photosensitive drum 2... Charger 3...Development 8:; 4...Transfer device 5...Fθ lens 6...Polyhedral rotating mirror 7...Combination lens 8...Laser diode 9...Rotating reflector 10...Light guide part that's all

Claims (1)

[Claims] In a printer that consists of a printing section, a light source section, and a deflection section whose main components are photosensitive drums, there are a plurality of light guide sections whose end surfaces are arranged in a straight line and the other end surfaces arranged in a circular shape, and a plurality of light guide sections whose end surfaces are arranged in a circular shape. A printer characterized in that it consists of a deflecting section with a rotating reflecting section installed at the center.