JPS62142658A - Mounting device for electrostatic recording head - Google Patents

Abstract

PURPOSE:To simplify a mounting step and prevent defective recording from occurring, by slidably supporting an electrostatic recording head by a pair of guide rods disposed perpendicularly to a plane on which a recording medium is moved, and pressing the head against a stopper by springs. CONSTITUTION:A pair of guide rods 22 are fixed to a bracket 20 by an appropriate means such as screws so that it is exactly perpendicular to a plane on which an electrostatic recording paper 3 is moved. An electrostatic recording head 6 is slidably supported on the pair of the guide rods 22 by slide bearings 23, and is pressed against the lower surface of the bracket 23 by leaf spring 24. With this construction, a recording surface of the head 6 can be easily maintained to be parallel to the plane on which the paper 3 is moved, without requiring any complicated adjustment, the recording medium can be prevented from being wrinkled or staggering, and accordingly, favorable images can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a mounting device for an electrostatic recording head used in an image recording apparatus such as an electrostatic plotter.

2. Description of the Related Art Electrostatic plotters have traditionally been used as output terminal devices such as converters, and the demand for them has been increasing year by year.

As shown in FIG. 3, a general electrostatic plotter includes a supply motor 2 that rotationally drives an electrostatic recording paper roll 1, and a guide roller 4 that guides the electrostatic recording paper 3 from the electrostatic recording paper roll 1.
．． 5, an electrostatic recording head 6 that forms an electrostatic latent image on the electrostatic recording paper 3; a pad roller 7 that presses the electrostatic recording paper 3 against the recording surface; a developing device 8 that turns the latent image into a visible image; A squeeze nozzle 9 that removes excess liquid developer on the electrostatic recording paper, a conveying roller 10 and its drive motor 11 that conveys the electrostatic recording paper 3 at a predetermined speed, a static elimination bar 12 that removes static electricity from the electrostatic recording paper 3, It has a winding roll 1-3 for winding the electrostatic recording paper 3, a winding motor 14 for driving the winding roll 1-3, and the like. 5 and the developing device 8 to form a latent image and develop the image.

In such an electrostatic plotter, the electrostatic recording head 6 is attached by attaching the end surface of the electrostatic recording head 6, as shown in FIG.
This is done by contacting the device frames 16 on both sides and screwing in the mounting screws 17 from both sides.

Problems to be Solved by the Invention However, in such a conventional electrostatic recording head mounting structure, the mounting position of the electrostatic recording head cannot be determined due to the looseness of the mounting screw from the side when the electrostatic recording head is mounted. If only fixed with screws, the parallelism and height relationship between the recording surface on the top surface of the electrostatic recording head and the running surface of the electrostatic recording paper will be distorted, causing wrinkles and meandering in the electrostatic recording paper, resulting in poor recording. There is a problem that occurs.

Therefore, it is necessary to adjust the mounting position of the electrostatic recording head, but since the electrostatic recording head is fixed from the side with mounting screws, it is difficult to determine the mounting position, and adjusting the mounting position is extremely complicated and troublesome. .

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide an electrostatic recording head mounting device that greatly simplifies the process of mounting an electrostatic recording head and prevents recording defects from occurring. With the goal.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a pair of guide rods arranged at right angles to the running surface of a recording medium such as electrostatic recording paper, and The electrostatic recording head is slidably held by the electrostatic recording head, and the electrostatic recording head is pressed against the stopper. The structure includes a spring.

According to the present invention, with the above-described configuration, the parallelism of the electrostatic recording head to the recording medium running surface can be obtained by simply mounting the electrostatic recording head on a pair of guide rods, and the recording head can be mounted on the stopper surface. By pressing the electrostatic recording head with the spring, the electrostatic recording head is fixed in a predetermined position. As a result, the electrostatic recording head is maintained in a predetermined parallelism and height relationship with respect to the recording medium, so that the recording medium is free from wrinkles and meandering, and moreover, the recording medium is not easily attached to the electrostatic recording medium. The recording surface is in close contact with the recording surface, and a sufficient latent image potential is formed.Therefore, there is no recording defect and it is possible to obtain an accurate image.

Example The present invention will be explained in detail below.

FIG. 1 is a partially sectional side view showing a first embodiment of an electrostatic recording head mounting device according to the present invention suitable for use in the electrostatic plotter shown in FIG. In the figure, a bracket 2° and a pair of guide rods 22 are attached to the apparatus frame 16 so as to be perpendicular to the running surface of the electrostatic recording paper 3, which is a recording medium. Here, since the running surface of the electrostatic recording paper 3 is determined by the guide roller 4.5 (see FIG. 3) held by the device frame 16, the joint surface between the bracket 20 and the device frame 16 is The pair of guide rods 22 are aligned with the running surface of the electrostatic recording paper 3 by machining them so that they are accurately horizontal and by machining the holes in the bracket 20 into which the guide rods 22 are inserted perpendicular to this joint surface. It can be made exactly at right angles.

The guide rod 22 may be passed through a hole in the bracket 20 and fixed to the bracket 20 by suitable means such as screws, or for the bracket 20, the guide rod 22 may be simply inserted into the hole and the support plate 21 may be attached to the device. It may be fixed in the illustrated position by screwing it to the frame 16.

The electrostatic recording head 6 is slidably held on the pair of guide rods 22 by a slide bearing 23, and a leaf spring 24 is provided between the support plate 21 and the electrostatic recording head 6. This leaf spring 24 pushes up the electrostatic recording head 6 and presses it against the lower surface of the bracket 20, thereby fixing the electrostatic recording head 6. In other words, the lower surface of the bracket 20 also serves as a stopper that determines the stop position of the electrostatic recording head that moves in the direction of the recording surface along this guide rod. The axis of the slide bearing 23 held by the electrostatic recording head 6 is positioned to be exactly perpendicular to the recording surface on the upper surface of the electrostatic recording head 6. In addition, the lower surface of the bracket 20 or the joint surface of the electrostatic recording head with the bracket 20 is such that the recording surface of the electrostatic recording head 6 is at a predetermined height when the two are joined, and the electrostatic recording paper is in good contact with the bracket 20. It is set at a comfortable height. Thus, the electrostatic recording head 6 is simply connected to the guide rod 2.
2 to slidably hold the bracket 20 with a leaf spring 24.
By simply pressing the bottom surface, the recording surface of the electrostatic recording head 6 can be
The latent image can be maintained parallel to the electrostatic recording paper 3 and at a predetermined degree of adhesion, and a good latent image can be formed.

FIG. 2 is a partially sectional side view showing another embodiment of the present invention. In this embodiment, instead of pressing the electrostatic recording head 6 directly onto the bracket 20, an adjustment screw 25 is attached to the bracket 20.
is held, and an electrostatic recording head 6 is pressed against its lower end. That is, the adjustment screw 25 functions as a stopper. In this embodiment, the parallelism between the recording surface of the electrostatic recording head 6 and the electrostatic recording paper 3 is maintained by a pair of guide rods 22, and furthermore, the height can be arbitrarily adjusted using an adjusting screw 25.

Effects of the Invention As is clear from the above explanation, the present invention has an electrostatic recording head that is slidably held by a pair of guide rods arranged perpendicularly to the running surface of a recording medium. By fixing the pressure on the stopper with a spring, the recording surface of the electrostatic recording head can be easily kept parallel to the running surface of the recording medium without the need for complicated adjustments, and the recording medium can be prevented from wrinkling or meandering. Since the electrostatic recording head and the recording medium can be maintained at a predetermined degree of adhesion, a latent image can be sufficiently formed, and a good image can therefore be obtained.

[Brief explanation of drawings]

FIG. 1 is a partially sectional side view showing one embodiment of the present invention, and FIG.
3 is a perspective view showing a schematic structure of an electrostatic plotter, and FIG. 4 is a side view, partially in section, showing a conventional electrostatic recording head holding device. 3...- Electrostatic recording paper (recording medium), 6...
Electrostatic recording head, 16... Device frame, 20
・Curve/bracket, 21...Support plate, 22.・
,... Guide rod, 23... Slide bearing, 24... Leaf spring, 25... Adjustment screw Name of agent Patent attorney Toshio Nakao and 1 other person 3 Call received Record bed G Boneshi peep difference z thick herad Zf ° Wen ph shaku zjz zu Puid rod 24 Right opposite 1;

Claims (3)

[Claims] (1) A pair of guide rods that are arranged perpendicular to the running surface of the recording medium and slidably hold the electrostatic recording head, and an electrostatic recording head that moves along the guide rods in the direction of the recording surface. An electrostatic recording head mounting device comprising a stopper that determines a stop position and a spring that presses the electrostatic recording head against the stopper. (2) The electrostatic recording head mounting device according to claim 1, wherein the stopper is formed on a bracket that fixes the guide rod. (3) The electrostatic recording head mounting device according to claim 1, wherein the stopper is constituted by an adjustment screw held in a position adjustable manner by a bracket that fixes the guide rod.