JPS58201462A - Reading scanner of facsimile device - Google Patents

Abstract

PURPOSE:To attain each adjustment simply without mutual interference, by performing a focus adjustment of a lens system, an angle adjustment of a solid- state image sensor, reading position adjustment of an original and an optical path length respectively with an independent mechanism. CONSTITUTION:The focus adjustment is done by shifting a focus adjusting plate 19 clipping a lens system 16 with pending pieces 19a, 19b axially. The angle adjustment of an image sensor 15 is done by turning an angle adjusting screw 35 inserted to a free through-hole 32 of a fixed plate 24, a compression spring 33 and a tap 34 of an angle adjusting plate 25 respectively. The adjustmen of a reading position of an original is done by turning an eccentric cam 41 latched to a free through-hole 42 of an adjusting plate 43 with a sub-scanning direction adjusting screw 45. Further, the adjustment toward the optical path length is done by turning an optical path length adjusting screw 59 inserted respectively to a free through-hole 56 of a cut and raise section 55 of a base 13, a compression spring 57, and a tap 58 of an optical path length adjusting plate 47.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a reading and scanning device for a facsimile machine.

In conventional facsimile machine reading and scanning devices.

The document is read by a lens system, a solid-state image sensor, etc., but since the focus adjustment mechanism of the lens system, the angle adjustment mechanism of the solid-state image sensor, the reading position adjustment mechanism, and the optical path length adjustment mechanism cannot be adjusted independently, each There is a drawback that the alignment mechanisms interfere with each other, making the positioning and viewing work of the lens system and solid-state image sensor very sloppy, time-consuming, and difficult.

In view of this point, the present invention is designed to enable each of the primary adjustment mechanisms to be operated independently.Example II will be described below.

In Figure 1, No. 2 (8), (1) is the paper feed roller, which is moved by the motor (21) in the sub-scanning direction (direction of the arrow) via the belt (4) and pulley f51. It is being rotated. f6+171 moves the document (8) to the paper feed roller (1!
+910 (mQll)
is along the surface of the paper feed roller il+.
81 is a guide, A is a light beam that illuminates the reading area of the original (81), G3 is a base on which the excavation parts are fixed, and a reading/scanning device fixed to the u41rt base 031.

The read scan ¥111041 is configured as follows6
゜051 is a solid-state image sensor placed at a predetermined position with respect to the original (8), and (k number of photoelectric conversion elements are aligned in the circular direction. 0θ is the solid-state image sensor ゜11J+
A lens holder that accommodates and holds the lens thread Q61, a lens thread for forming an original image on the U-pull J
A focus adjustment mechanism that moves the lens thread 0e in the axial direction by ytO with respect to the lens holder.
A pair of hanging F pieces (19a) (19b) v are formed on the focus plate q pushed into the axial groove of 71, and a hanging piece of this Q (
The lens thread 11/)l is held between 19g) and 19b, and by moving this focus adjustment plate (19 in the axial direction), the lens system 11θ is moved to adjust the focus. .The focus adjustment plate (19 is a standing piece (19
The focus adjustment screw QD, which is screwed into the lens holder (1η) by inserting it through the compression spring (0) and the compression spring (@), is screwed back and forth to adjust its movement in the @ direction.
4 This solid-state image sensor O is held + in the main scanning direction.
9 is the reading board that is attached to the lens holder (Lη), G is the angle adjustment mechanism that rotates and adjusts the reading board surface around the optical axis of the lens system tte; , Es is formed of an angle adjustment plate G etc. which can be rotated and adjusted with respect to the fixed plate (2).In the angle adjustment mechanism, the attachment between the fixed plates and the angle adjustment mechanism to the lens holder d7) is as follows.

After adjusting the angle, insert the three rotation guides @(G) through the elongated hole cylinder on the concentric circle of G and the circular hole of the fixing plate 124+, and screw them into the tap hole (not shown) of the lens holder (171). 1. The angle adjustment mechanism (c) is fixed! F
The lc24 is fixed to the lens holder 〇7) at a predetermined position by the rotation guide @■ and cannot be rotated, but the angle adjustment plate section can be rotated around the optical axis within the range of the elongated hole tube. The fixing plate 1241 and the angle adjusting plate/251 are fitted at the edges of their fitting holes (7) into the annular edge CD of the lens holder frame, as shown in FIG. Angle adjustment plate (c)
angle! l'11F is the loose insertion hole 03. of the fixed plate (c). This is done by turning the angle It' adjustment screw Oj, which is inserted through each of the compression springs and the tap (B) of angle adjustment #1 (251), once. A retaining ring is provided at the tip.A reading board held by the solid-state image sensor α91 is connected to the angle adjustment plate ω with a screw via a spacer 37). Therefore, the angle adjustment screw (
By rotating the solid-state image sensor (c), the solid-state image sensor (with respect to the optical axis) can be adjusted within a range of +51 angles θ.

The country has a reading position ll' adjustment mechanism that moves and adjusts the reading position of the original (8) in a direction parallel to the original surface. , recording paper (8
), which is adjusted in the transport direction (direction of arrow B), and the main scanning direction position adjustment mechanism rAυ, which is adjusted in the width direction of the recording paper (8) (direction of arrow B). We are prepared. As shown in Figure 1, in the sub-scanning direction position adjustment mechanism section), the document is read using a small gap between the guide G (1) and the tension roller (7), so the reading position is in the sub-scanning direction. If the tension roller (
7) Or, the document cannot be read correctly due to interference with Gytro O, and therefore accurate positioning of W1m is required. In this sub-scanning direction position adjustment mechanism part, the loose insertion hole of the eccentric cam attached to the lens holder an is connected to the sub-scanning direction adjustment plate +43 formed with 2, and the base holder T44).
This adjustment plate 14'J is held freely in the sub-scanning direction.
ms#114 by rotating the eccentric cam Qυ that engages with the loose insertion hole 142 with the sub-scanning direction adjustment screw C9.
3, lens system ae, etc. in the sub-scanning direction, and after adjustment, the adjustment plate is screwed into the base holder I. In addition, in the W adjustment mechanism section I with main scanning direction, the base holder (4
The base holder 441 is attached to the optical path length adjusting plate q71 so that it can be adjusted and moved in the main scanning direction using the guide shaft (4) that passes through the optical path length adjusting plate q71. Clear insertion hole, compression splash and base holder
Main scanning direction 1 setting screw (51
) ¥1 rotation.

(52) is an optical path length adjustment mechanism that adjusts the distance V between the document surface and the 1M body image sensor 051, and the optical path length is adjusted by the guide shaft (54) inserted through the loose insertion hole (53) of the one-part approximate length adjustment plate 14n. Board I4n or base! +3 so that it can be adjusted and moved in the optical path length direction.

A loose insertion hole (56) in the cut and raised portion (55) of the base 113.

Compression spring (57) and optical path length adjustment plate tap (58)
This is done by turning the optical path length direction adjustment screw (59) inserted through each of the six turns.

Since the present invention has been achieved as described above, the focus adjustment of the lens system, the angle adjustment of the solid-state image sensor, the original reading position adjustment, and the optical path length adjustment can be adjusted by independent mechanisms, and therefore each adjustment can be easily carried out without mutual interference.

[Brief explanation of the drawing]

1 is a schematic configuration diagram of a facsimile machine equipped with an embodiment of the present invention, FIG. 2 is an exploded perspective view of an embodiment of the invention, and FIG. 3 is a sectional view of a part of the embodiment. FIG. 4 is an explanatory diagram of the operation of the angle (adjustment mechanism) according to the same embodiment.

Claims (1)

[Claims] 1) A solid-state image sensor disposed at a predetermined position with respect to a document, a lens system for forming a document image on the solid-state image sensor, and a lens system that is attached to a lens holder. A focus adjustment mechanism that adjusts movement in the optical axis direction, and an angle adjustment mechanism that rotates and adjusts the solid-state image sensor around the optical axis of the lens thread. It is equipped with a reading position adjustment mechanism that moves and adjusts the reading position of the original in a direction parallel to the original surface, and an optical path length adjustment mechanism that adjusts the distance between the original surface and the solid-state image sensor. The focus adjustment mechanism, angle adjustment mechanism, reading position adjustment mechanism, and optical path length adjustment mechanism can be adjusted independently (
A reading/scanning device for a facsimile machine, characterized in that: