JPS6055228A - Storage device - Google Patents

Abstract

PURPOSE:To improve the assembling accuracy of a semiconductor element array head by providing the titled device with a phtosensitive drum, a base plate holding a semiconductor element array opposed to said photosensitive drum and plural length measuring means. CONSTITUTION:Two pairs of length measuring devices 9 are arranged on opposite positions of the base plate 4 close to both the ends of the photosensitive drum 1 and also arranged symmetrically around the center line in the longitudinal direction of an LED array 3. One end of each head fitting part 7 fitting part 7 is fixed on a case 10 and the other end is fixed on the base plate by a fixing screw 5. The distance from the photosensitive drum 1 is detected by the length measuring devices 9 and the values of four length measuring devices are set to a prescribed value by using adjusting acrews 8 to adjust the position of the LED array. Thus, the assembling accuracy of the semiconductor element array head can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a recording apparatus in which a semiconductor element array head is fixed at a predetermined position relative to a photosensitive drum.

Conventional configuration and its problems Conventional recording devices using semiconductor element array heads improve the accuracy of each component, and the semiconductor element array head is directly fixed to the housing via the mounting section, so that individual Due to variations in component dimensions, the assembled state of the photosensitive drum, and variations in the dimensions of the semiconductor element array head, the accuracy of the distance between the photosensitive drum and the semiconductor element array head (predetermined dimension ± 0.1 mm) and the parallelism of the center line must be determined. It was difficult to install the product, and the condition of the product could not be determined without actually operating it.

FIG. 1 shows a conventional example using an LED array head as a semiconductor array head. In the figure, 1 is a photosensitive drum, 2
is selfoc lens, 3 is LED array, 4 is LED
A base plate for fixing the array, 6 is a fixing screw, 6 is a knock pin, 7 is a head mounting part, the base plate 4 is based on the knock pin 6, and the head mounting is fixed to part 7 by fixing screws 6. ing.

During recording, the LED array 3 is caused to emit light in response to a recording signal, and an image is formed on the photosensitive drum 1 via the SELFOC lens 2, followed by development (not shown).

It is recorded through a transfer and fixing process.

In such a configuration, since the base plate 4 and the head mounting part 7 are fixed, the mounting is a part of creating the distance and parallelism between the LED array 3, cell 7, orthoclean lens 2, and the photosensitive drum 1. 7 and knock bottle e must be made with high precision. Furthermore, a high level of assembly accuracy is required for the LED array head. However, in reality, there are individual variations, and it is extremely difficult for the instructor to adjust them.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks, and an object of the present invention is to provide a recording device having a function of easily adjusting the distance and parallelism between a semiconductor element array head and a photosensitive drum with high accuracy. do.

Composition of the Invention A recording device of the present invention includes a photosensitive drum, a semiconductor element array provided opposite to the photosensitive drum, a base plate holding the semiconductor element array, and a removably attached to the base plate. The apparatus includes a plurality of sub-length means and an adjustment means for varying the distance between the base plate and the photosensitive drum.

DESCRIPTION OF EMBODIMENTS An example in which the present invention is implemented in an LED array head will be described below with reference to the drawings.

FIGS. 2 and 3 show an embodiment of the present invention, with FIG. 2 being a view from the end of the drum, and FIG. 3 being a view from the side of the drum. In the figure, the same parts as in FIG. 1 are given the same reference numerals, and detailed explanations are omitted.

In this embodiment, a detachable length measuring device 9 for detecting the distance between the base plate 4 to which the LED array 3 is fixed and the photosensitive drum 1 is installed.
It was placed in four locations. Two length measuring devices 9 are mounted on the base plate 4 at opposite positions near both end surfaces of the photosensitive drum 1, and each length measuring device 9 is attached in the longitudinal direction of the LED array 3 (i.e., in the direction of the length of the photosensitive drum 1). These sub-length devices 9 can be used to measure the distance between the base plate 4 and the photosensitive drum 1, such as a dial gauge or a micrometer. It may be attached to the base plate 4 in a removable manner, or it may be removed during recording.

Further, one end of the head mounting portion 7 is fixed to the housing 1o, and the other end is fixed to the base plate 4 with a fixing screw 6. An adjustment screw 8 is provided on the base plate 4.

Now, if the head mounting section 7 is tilted with respect to the photosensitive drum 1, the distance from the photosensitive drum 1 is detected by the length measuring device 9 attached to the base plate 4, and the distance from the photosensitive drum 1 is detected using the adjusting screw 8.
By aligning the values of the length measuring device 9 at several locations to predetermined values,
The surface of the LED array 3 can be adjusted to be perpendicular to the normal line of the photosensitive drum 1, and the center line of the LED array 3 can be included in a plane that includes the normal line and the drum center line.

Regarding the inclination of the photosensitive drum 1 in the rotational axis (center line) direction, as shown in FIG. Adjustment can be made by adjusting the base plate to an appropriate position using the screws 8 and fixing it to the head mounting portion 7 using fixing screws.

In this way, the photosensitive drum 1, the cell 7, the photosensitive lens 2.
The center lines of the LED array 3 can be kept parallel and the distance between the LED array 3 and the photosensitive drum 1 can be set with high precision. a semiconductor element array provided on the base plate, a base plate holding the semiconductor element array, a plurality of length measuring means removably provided on the base plate, and a distance between the base plate and the photosensitive drum. The present invention provides a recording apparatus equipped with variable adjustment means, and has the advantage that the distance and parallelism between the semiconductor element array head and the photosensitive drum can be adjusted easily and accurately.

[Brief explanation of the drawings] Figure 1 is a front view showing the main parts of a conventional recording device, and Figure 2 is a front view showing the main parts of a conventional recording device.
The figure is a front view of the main parts of a recording apparatus according to an embodiment of the present invention, and FIG. 3 is a side view of the recording apparatus shown in FIG. 2. ...Cell 7 ortho cleanse, 3...LED array, 4...
・Base plate, 6...Fixing screw, 7...
Head mounting part, 8...Adjustment part, 9...
Vice-long organ. Name of agent: Patent attorney Toshio Nakao and 1 other person 1st
Figure 2 Figure

Claims (1)

[Claims] a photosensitive drum, a semiconductor element array provided opposite to the photosensitive drum, a base plate holding the semiconductor element array, a plurality of length measuring means detachably provided on the base plate, and the base. A recording device comprising an adjusting means for making the distance between the plate and the photosensitive drum variable.