JPS6130863A - Contact sensor unit - Google Patents

Abstract

PURPOSE:To lower the height of a contact sensor unit by providing a photoelectric converting means of a contact sensor unit and a drive section to different faces of a unit case. CONSTITUTION:An LED array 8 is provided to the lower part of the unit case 4. A photoelectric conversion element array base 10 and a matrix wiring board 12 are provided to the upper face of the case 4. A slope 16 is provided to the side faces of the case 4. The slope 14 is provided with a flexible cable base 16 provided with an IC section 18 constituting a drive section. The boards 16, 10 and 12 are connected by a flexible cable 20. Since the drive section is arranged on the slope 14 of the side faces of the case, the height H3 of the contact sensor unit 2 is reduced. One LED array 8 is employed and the slope 22 is made steep, then the width W3 of the unit 2 is decreased.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a contact sensor unit with a low height. A photosensor array was used. However, in this one-dimensional photosensor array, there is a limit to the size of the silicon single crystal, and it is difficult to manufacture a long photosensor array.

For this reason, recently chalcogenide, CdS * Cd5Se
A long line sensor has been devised, which is a Brehner-type photoconductive photosensor consisting of a pair of opposing metal electrodes, with a gap serving as a light receiving section formed on a photoconductive layer such as an amorphous silicon layer.

FIG. 3 shows a cross-sectional view of the contact sensor unit 102 using the long line sensor described above. As shown in the figure, an LED array 108 as a light source is provided at the bottom of the unit housing 104, and the LED array 108 emits light. The reflected light is reflected by the document (not shown), and the reflected light is provided on the unit a body 104 by a focusing light transmitter array 106 such as a SELFOC lens array (trade name: Nippon Sheet Glass), and then transferred to a glass substrate. Fabricated photoelectric conversion element array group &110
Light is focused on the document and the information on the document is converted into electrical signals.

A matrix wiring board 11 is mounted on the upper part of the unit housing 104.
2 is also attached, and the photoelectric conversion element array substrate 110 and the IJ sock line substrate 112 are electrically connected. Furthermore, a substrate 126 is provided above the photoelectric conversion element array substrate 110 and the matrix wiring substrate 112, on which an ICi 18 serving as a driving section and an electric component 124 are provided. Note that H1 and Wl represent the height and width of the @ arrival sensor unit 102.

However, the long length of the contact sensor unit in the height direction has been an obstacle to miniaturization of the contact sensor unit.

〔the purpose〕

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a contact sensor unit which has a short length in the height direction and which is easy to assemble.

〔composition〕

In order to achieve the above object, the present invention includes a photoelectric conversion element array and an I
The drive unit according to C is provided on different surfaces of the unit housing.

[Examples] Examples of the present invention will be described in detail below based on the drawings.

FIG. 1 is a longitudinal sectional view of a contact sensor unit 2 according to a first embodiment of the present invention. In the embodiments shown below, parts that perform the same functions are designated by the same numbers. In this embodiment, a SELFOC lens array 6, which is a condensing lens system, is installed through a unit housing 4 formed of aluminum material, and the unit housing 4 is mounted on both sides of the SELFOC lens array 6.
An LED array 8 serving as a light source is provided on the lower surface of the LED array 8 to face each other.

A photoelectric conversion element array substrate 10 serving as a photoelectric conversion means is provided at a position on the upper surface of the unit housing 4 at a position where light from the SELFOC lens array 6 can be received. A matrix wiring board 12 is provided.

A sloped part 14 is provided on the side surface of the unit housing 4, and a flexible cable board (hereinafter referred to as a flexible board) 16 having an IC part 18 serving as a driving part is fixed to this sloped part 14. This flexible board 16 is a flexible cable 20
It is electrically connected to the photoelectric conversion element array substrate 10 and the IJ sock line substrate 12.

In this example, the width W is smaller than that of the conventional contact sensor unit.
Although the height H2 is slightly wider (Wl > Wt), the height H2 is much lower (H2 < Ht), so an extremely thin contact sensor unit can be realized.

FIG. 2 is a longitudinal sectional view of a contact sensor unit according to a second practical example of the present invention. The width W3 of the contact sensor unit 2 is provided only on one side of the Fock lens array 6, and the inclination of the second inclined portion 22 of the other unit housing 4 opposing the LED array 8 is made larger than in the first embodiment.
This is due to the fact that it is made smaller.

According to the second embodiment, compared to the conventional contact sensor unit 2, the width W3 is approximately the same (Wl = wt) and the height is slightly lower (Hs<Hx), making it an extremely thin and compact contact sensor unit. can be realized.

〔effect〕

As described above in detail and specifically, the present invention provides the following effects.

(1) Since the height of the contact sensor unit can be reduced, the contact sensor unit can be made smaller.

(2) There is no sharp bend in the way the flexible substrate is routed, making it easy to assemble the contact sensor unit, and providing a highly reliable contact sensor unit.

[Brief explanation of drawings]

1 and 2 are cross-sectional views of a contact sensor unit according to the first and second embodiments of the present invention, and FIG. 3 is a cross-sectional view of a conventional contact sensor unit. In the figure, 2. Arrival sensor unit, 4. Unit housing, 6.
...Self-MEC lens array, lO...114 conversion element array substrate, 18...IC.

Claims (1)

[Claims] (1) In a close-contact sensor unit in which a light source, a condensing lens system, a photoelectric conversion means, and a drive section for driving these are provided in a unit housing; the photoelectric conversion means and the drive section are located in different units of the unit housing. A contact sensor unit characterized by being provided on a surface.