JPH0918647A - Recording device capable of mounting image reading means - Google Patents

Abstract

PURPOSE: To adopt a configuration of miniaturized scanner unit and facilitating lens adjustment in a recorder on which the image read scanner unit is mounted removably. CONSTITUTION: A reinforcement plate 20 to mount a printed circuit board 12 is fixed to three sides inside a case 15 of a scanner unit 11, a synthetic resin with a metallic plate or a metallic foil adhered thereon is used for a material of the reinforcement plate and the reinforcement plate 20 shade an external light to cover the board 12 thereby shielding electric disturbance. Since it is not required to assemble another component to shield external light or cut-off electric disturbance, the size of the scanner unit 11 is made small and the adjustment of a lens is facilitated. The light shield performance is enhanced by coloring the reinforcement plate 20 in black.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus in which a recording means for recording on recording paper or a reading means for reading an image can be exchangeably mounted, and more particularly to a structure of the image reading means.

[0002]

2. Description of the Related Art A conventional recording apparatus generally receives data from a computer and records it on a recording sheet based on the received data, but recently, it is not limited to a recording-only function. Some of them have a function of reading the recorded image data, and a recording device of a combined recording and reading type is disclosed.

In both of these, the recording means and the reading means can be interchangeably mounted by using the same holding means while sharing the paper conveying system, and both functions are provided. That is, in the above-described recording apparatus, a recording head having recording means such as dot impact, thermal transfer, ink jet, etc. is detachably mounted on a carriage which is a holding means, and the moving means moves along the recording paper to perform recording. In order to perform image reading by the above-described recording apparatus, the recording head is detached from the carriage, a scanner unit as an image reading unit is mounted, and the moving unit is moved along the image reading document to read the image. Is to do.

[0004]

In the image reading means detachably provided in the above-mentioned conventional recording apparatus, the electric circuit board constituting the reading apparatus is attached to the scanner unit by the reinforcing plate, and the reinforcement is performed. The plate only has the function of reinforcing the substrate and mounting it on the scanner unit.

Further, the reading device is equipped with a light source, a condenser lens, an optical sensor, an IC for A / D conversion, other electric parts, etc., and a part for shielding external light and an electric disturbance. Since it is necessary to provide a component for shielding the same, it is structurally difficult to integrate the outer shape into a small size like the recording head, and it is also difficult to adjust the focus of the lens in terms of space.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a recording apparatus which is easy to integrate and easy to adjust a lens and which is replaceable with a recording head and has a small image reading means.

[0007]

A recording apparatus capable of mounting an image reading means of the present invention is a recording means for recording on a recording paper or a reading means for reading an image and a holding means for holding the recording means or the reading means in a replaceable manner. And a holding means for moving the holding means in the recording direction of the recording means or the reading direction of the reading means, and a reinforcing means for mounting a substrate that constitutes an electric circuit of the reading means shields external light from the reading means. And means for interrupting electrical disturbance to the reading means.

It is preferable that the reinforcing means for mounting the substrate forming the electric circuit is formed of a metal plate or a synthetic resin plate to which a metal foil is attached.

Further, it is preferable that the reinforcing means is colored black.

[0010]

The reinforcing plate for mounting the substrate forming the electric circuit of the scanner unit which is the image reading means is formed of a metal plate or a synthetic resin plate to which a metal foil is attached.
It can block external light to the inside of the scanner unit, and can also block electrical disturbances.Therefore, use a component to block external light inside the narrow scanner unit or a component to shield electrical disturbances. Since it is not necessary to install the scanner unit, a small scanner unit similar to the recording head can be obtained, and the lens focus adjustment can be easily performed. If the reinforcing plate is made black, the property of blocking external light is increased, so that the influence on the internal sensor signal can be reduced.

[0011]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of an ink jet recording apparatus capable of mounting an image reading means according to an embodiment of the present invention, and FIG.
2A is a schematic view showing the structure of a scanner unit which is the image reading means in FIG. 1, and FIG. 1A is a perspective schematic view of a substrate that constitutes an electric circuit and a reinforcing plate on which the substrate is mounted, as seen through from the outside. ) Is a schematic view of a section taken along line XX in (A), showing the configuration and operation of the scanner unit.

In FIG. 1, a recording head 1 for recording on recording paper with ink or a scanner unit 11 as a reading means for reading an image is provided on the carriage 2 in a replaceable manner and driven by a drive motor 3. Two parallel guide shafts 5A by the belt 4
And 5B, and can move along the platen 6 holding the recording paper or the image to be read. When the recording head 1 is mounted on the carriage 2, recording is performed on the recording paper on the platen, and when the scanner unit 11 is mounted on the carriage 2, the scanner unit 11 is moved along the read original on the platen. Is moved to scan and read.

Scanner unit 1 for performing this reading
As shown in FIG. 2, 1 is covered with a substantially rectangular parallelepiped housing 15, and inside the remaining three surfaces of the surface perpendicular to the bottom surface of the housing 15 except the surface on the platen 6 side, a reinforcing plate is provided. Twenty is fixed. Inside the reinforcing plate 20, the electric circuit board 1
2 is mounted, and the original 10 on the platen 6 is mounted on the substrate 12.
LED light source 13 for irradiating light, sensor 14 for photoelectrically converting reflected light of characters or images, mirror 16, lens 17, 1
8, 19, A / D converter (not shown), I for image processing
Main components such as C, and electrical components such as resistors, capacitors, coils, and oscillators are mounted. The image data processed by the image processing IC is transferred to a main body device (not shown) and further sent to the host computer.

A metal plate is used for the above-mentioned reinforcing plate 20 in order to block external light to the inside of the scanner unit 11 and to block electrical disturbance. The material of the metal plate is a copper plate,
An iron plate, an aluminum plate, a stainless plate, etc. are suitable.
Alternatively, a metal foil may be attached to a synthetic resin plate,
Copper foil, iron foil, aluminum foil and other alloy foils are suitable for the metal foil.

A reinforcing plate 20 using such a material is
It is formed so as to be larger than the electric circuit component board 12 and cover the entire three surfaces of the inner surface of the housing 15 described above. As a result, it is possible to block external light from entering the inside of the scanner unit 11, and it is also possible to block electrical disturbance. Further, since it is not necessary to incorporate a separate component for shielding external light or a component for shielding electrical disturbance inside the narrow scanner unit 11, it is possible to reduce the outer shape of the scanner unit 11. The focus adjustment of the lens also becomes easy.

Further, by providing the reinforcing plate 20 with black color, it is possible to enhance the light shielding property of external light, so that the influence on the internal sensor signal is reduced.

Although the above-described embodiments have been described in detail with respect to the ink jet recording apparatus, the invention can be applied to a replaceable image reading scanner head in a recording apparatus other than the ink jet recording apparatus, for example, a recording apparatus using a recording head such as dot impact or thermal transfer. That is clear.

[0018]

As described above, according to the present invention, in a recording apparatus in which a recording head or an image reading scanner unit is replaceably mounted, external light is applied to a reinforcing plate on which an electric circuit board of the scanner unit is mounted. Since a metal plate that shields light and blocks electrical disturbances or a synthetic resin plate with a metal foil attached is used, there is no need to install separate components that block external light or components that shield electrical disturbances.
Since the outer shape of the scanner unit can be easily miniaturized and the lens can be easily adjusted, there is an effect that a recording apparatus equipped with a small image reading unit that can be replaced with the recording head can be obtained.

Further, by applying a black color to the reinforcing plate,
This has the effect of increasing the ability to block external light.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a recording apparatus capable of mounting an image reading unit of the present invention.

2A and 2B are schematic diagrams of a scanner unit that is the image reading unit of FIG. 1, in which FIG. 2A is a schematic perspective view and FIG.
2 is a schematic view of the XX cross section showing the configuration and operation of the scanner unit.

[Explanation of symbols]

 1 Recording Head 2 Carriage 3 Drive Motor 4 Drive Belt 5A, 5B Guide Shaft 6 Platen 10 Document 11 Scanner Unit 12 Electrical Circuit Board 13 LED Light Source 14 Sensor 15 Case 16 Mirror 17, 18, 19 Lens 20 Reinforcing Plate

Claims (4)

[Claims] 1. A recording means for recording on a recording paper or a reading means for reading an image, a holding means for holding the recording means or the reading means in a replaceable manner, and a holding means for the recording direction of the recording means or the reading. In a recording device capable of mounting an image reading means, which has a moving means for moving the reading means in a reading direction, a reinforcing means for mounting a substrate forming an electric circuit of the reading means shields external light from the reading means. And a means for cutting off an electrical disturbance to the reading means, a recording apparatus mountable with an image reading means. 2. The recording apparatus according to claim 1, wherein the reinforcing means for mounting the board forming the electric circuit is a metal plate. 3. The recording apparatus according to claim 1, wherein the reinforcing means for mounting the substrate forming the electric circuit is a synthetic resin plate to which a metal foil is attached. 4. The recording apparatus according to claim 1, wherein the reinforcing means for mounting the board forming the electric circuit is colored black.