JPS6225313B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a facsimile transmitting apparatus in which an original feeding mechanism and a means for mounting a scanning system including a lens are improved.

Conventionally, this type of device has various structures, and FIG. 1 shows an example of one structure. That is, in this apparatus, a document feeding mechanism 2 and a scanning system 3 (hereinafter referred to as an optical scanning system) including a lens are separately placed at a predetermined position on a base 1. In this document feeding mechanism 2, a main driving roller 5a, an auxiliary roller 5b, a main driving roller 6a and an auxiliary roller 6b are provided at the upper and lower parts of frames 4 and 4', which are set upright on the base 1 at a predetermined distance apart. are rotatably supported in opposition to each other, and the rotation of a drive motor 7 attached to one frame 4 is transmitted via a belt 8 to main drive rollers 5a and 6a. Therefore, when the rotation shaft of the drive motor 7 is rotated in the direction of the arrow shown in the figure, the rollers 5a, 5b, 6a, 6b
The transmission document 9 is rotated and transferred in the direction of the arrow shown in the figure. In addition, notches 10 and 10'(10' are not shown) are provided on the rear end sides of both frames 4 and 4'.
By forming an illumination light source 11 (the holding mechanism for the light source 11 is omitted in the figure) between both the notches 10 and 10', a reflected light image is generated from the surface of the transmitted document. There is. 12 is a set screw for the frames 4, 4'.

On the other hand, the optical scanning system 3 includes a bracket 1 which has a lens 15 attached to its surface and supports a solid-state scanning element circuit unit 17 at its rear via a spacer 16.
8 is erected by screws 19. The mounting position of the bracket 18 is such that it can accurately scan the reflected light image of the transmitted document 9 as indicated by the two-dot chain line 20.

However, in the case of the facsimile transmission device as described above, the following disadvantages arise due to its structure. First, since the optical scanning system 3 is separate from the document feeding mechanism 2, the mounting dimensional accuracy and assembly accuracy of related parts such as the illumination light source 11, lens 15, and solid-state scanning element circuit unit 17 must be sufficiently controlled. At the same time, it is also necessary to ensure sufficient mounting dimensional accuracy of the optical scanning system 3, which leads to an increase in costs.
Furthermore, the base 1 is likely to be bent due to the weight of the document feeding mechanism 2, the optical scanning system 3, etc. or due to external forces. Therefore, it is necessary to provide the base 1 with sufficient rigidity in order to increase the precision of the mounting dimensions of the optical scanning system 3 and the like, which has the drawback of increasing weight and cost.

Next, FIG. 2 shows a conventional device which is also an improved structure of FIG. 1. In other words, this device uses the frame 4 in FIG.
This uses frames 21, 21' whose rear ends are extended. And this frame 21,
Notches 22, 22' are provided at the rear end of 21', and a bracket 23, on which the lens 15 and the solid-state scanning element circuit unit 17 are attached, is straddled and engaged with both the notches 22, 22'. ing. Numeral 24 is a screw that is screwed into the frame 21, 21' from the side to fix the bracket 23 to the frame 21, 21'.

Incidentally, although the device shown in FIG. 2 has been somewhat improved from the disadvantages of the device shown in FIG. 1, problems still remain. That is, although the frames 21 and 21' function as reinforcing members for the base 1 and can somewhat improve the inconvenience shown in FIG. It is necessary to sufficiently control the mounting dimensional accuracy and assembly accuracy of parts related to 3 as shown in Fig. 1. moreover,
Since the frames 21 and 21' are separately installed on the base 1, one or both of the frames 21 and 2 may become damaged during long-term use.
There is a drawback that the transmission original 9 cannot be scanned at a predetermined scanning position due to deflection of the transmission document 1'.

FIG. 3 shows another example of the conventional device. This device includes a frame 31 having almost the same form as in FIG.
31' is used, but in particular, there are bent parts 32, 3 on the upper rear end side and the lower upper end side with the notch 10 as a boundary.
3, to which the front flanges 35 and 36 of a funnel-shaped bracket 34 having a rectangular cross section are opposed and fixed with screws 37 and 38. A solid state scanning element circuit unit 17 is attached to the back side of this bracket 34.

In the apparatus having the above structure, the bracket 34 is directly attached to the frames 31, 31', so that the optical scanning system cannot be easily fixed due to the lack of rigidity of the base 1 described in FIGS. 1 and 2. It is possible to eliminate the discrepancy in the mounting dimensional accuracy of frame 31, 3.
Problems arise in the assembly accuracy of the joint between the bracket 1' and the bracket 34 and in the machining accuracy of the bracket 34.

Furthermore, a common drawback of the devices of FIGS. 1 to 3 is that it is difficult to standardize the entire transmitting device. Originally, this type of device is compatible with the relative positional relationship between the original feeding mechanism 2 and the optical scanning system 3 as long as the scanning width, scanning resolution, and scanning speed, which are some of the basic constants of facsimile scanning, are the same. are the same, and it should be possible to standardize the entire module by considering it as one module.

However, at present, it is necessary to adopt different structures depending on the external shape, structural type, etc. of the transmitting device (desktop type, floor type, direction of insertion and ejection of the transmission document 9, etc.). This is due to the fact that the base 1 of the transmitter is used as a positioning element for the optical scanning system 3. Also, the frame 3 on the document feeding mechanism 2 side
1, 31' and the bracket 34 on the optical scanning system 3 side are made separately, and the bent parts 32, 33 of the frames 31, 31' and the flange 35 of the bracket 34 are made separately.
Since the optical scanning system 36 is structured to be joined together, if there is a slight deviation in the mounting dimensions, the optical scanning system 3 will not be able to accurately scan the transmission document 9 at a predetermined scanning position.

The present invention has been made in view of the above-mentioned circumstances.The present invention has been developed by attaching an optical scanning system and an important component of the document feeding mechanism that accurately obtains a reflected light image from a transmitted document to an integrated frame. To provide a facsimile transmitting device which is stable for a long period of time with high efficiency, has a simple structure, has good productivity, and has excellent versatility.

Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 4 to 6. 4 shows the overall structure of the apparatus, FIG. 5 shows a frame that supports important components of the document feeding mechanism and the optical scanning system, and FIG. 6 shows a support frame that supports the auxiliary roller. More specifically, in this device, a frame 44 (hereinafter referred to as an integral frame) is fixed at a predetermined position of a base 41 with screws 43 via, for example, an L-shaped mounting bracket 42. This base 41 is normally made of a rigid one, but in this structure, since the mounting dimensions of related parts are completely dependent on the integral frame 44, a thin plate is also sufficient. As shown in FIG. 5, the integral frame 44 has a bottom plate 44a, side plates 44b, 44, except for the front and top parts.
b' and the back plate 44c are integrally formed, and a light source mounting notch 45,
Similarly, upper roller mounting notches 46 and 4 are provided at the front ends of both side plates 44b and 44b' and above and below the light source mounting notches 45 and 45', respectively.
6' and lower roller mounting notches 47, 47',
Furthermore, a lens positioning notch 48 is provided on the back plate 44c.
are formed respectively. Reference numeral 49 indicates a motor mounting hole, and reference numerals 50 and 50' indicate holes that serve as fulcrums on which the support frame 51 is rotatably supported.

As shown in FIG. 6, this support frame 51 has side plates 53, 53' formed by bending both ends of a guide plate 52, which serves as a guide for the original to be transmitted, at almost right angles in the front direction. Roller mounting holes 54, 54' and 55, 55' are formed in the upper and lower parts, and support fittings 56, 56' are attached to the lower end surfaces of the side plates 53, 53' so as to partially protrude outward. . Guide plate 52 has relief holes 57 and 58.
is provided. In the case of the support frame 51, the holes 60, 60'(60' are not shown) bored at the ends of the support fittings 56, 56' are connected to the holes 50, 50' of the integral frame 44. A fulcrum pin 61, as shown in FIG.
61'(61' is not shown) is inserted so that it can rotate relative to the integral frame 44.

The forms of the integral frame 44 and the support frame 51 are as described above, and related parts are attached to them as shown in FIG. That is, an illumination light source 62, such as a fluorescent lamp, for irradiating light onto the transmitted document to generate a reflected light image is installed in the light source attachment notches 45, 45' of the integral frame 44, and an upper roller attachment notch is provided. 46, 46' and lower roller mounting notches 47, 47', for example, drive rollers 63, 6 that guide the transmitted document in a predetermined direction via bearings or the like.
4 are installed rotatably. Further, a drive motor 65 is attached to the inside of one side plate of the integral frame 44, and a pulley 66 attached to the rotating shaft of the motor 65 is connected to a pulley 6 of the drive rollers 63, 64.
The belt 69 is passed around 7 and 68, and the main drive roller 6
3,64 are rotated. Further, a bracket 71 supporting a solid-state scanning element circuit unit 70 is attached to the rear plate 44c of the integral frame 44, and a lens 72 attached to a predetermined position of this bracket 71 transmits data via the lens positioning notch 48. It is set up so that it faces the manuscript. Therefore,
The optical scanning system is also perfectly positioned by the integrated frame 44 and can scan at a precise scanning position, and the problem of poor precision in the optical and scanning systems due to the lack of rigidity of the base as in the prior art can be completely solved.

On the other hand, on the support frame 51 side, both side plates 5
3, 53' roller mounting holes 54, 54' and 5
Auxiliary rollers 63' and 64' are installed on the main drive rollers 63 and 64 to move the transmission document in a predetermined direction.

In this device, the related parts attached to the support frame 51 are auxiliary parts. By separately mounting the important parts of the apparatus on the integrated frame 44 and the auxiliary parts on the support frame 51 in this way, it is convenient to inspect the document feeding mechanism, etc., and at the same time it is easy to assemble. The structure is very advantageous and suitable as a standardized type.

The actual assembly order is to first assemble the integral frame 44.
After attaching the corresponding related parts to the support frame 51 and the support frame 51, the holes 50 and 5 of the integral frame 44 are
Holes 60, 60' on the support frame 51 side are aligned with 0', and fulcrum pins 61, 61' are inserted, so that the support frame 51 is rotatably provided with respect to the integral frame 44. next,
The integrated frame 44 and support frame 51 are placed on a base 41 and fixed with mounting fittings 42.

It goes without saying that the present invention is not limited to the above-mentioned embodiments and can be implemented in various modifications.
That is, since most of the units of the present device except for the base 41 are in the form of an integral structure, the integral frame 44 may be a simple one. Furthermore, this device can be installed in various conditions depending on the appearance and structure of the installation. FIG. 7 shows an example of this, in which the present device is installed on the top of a pedestal 71 as a floor type. Reference numeral 72 designates a document supply table, and reference numeral 73 designates a receiving table for receiving the ejected document.

As described in detail above, according to the present invention, the important components of the document feeding mechanism and the optical scanning system are attached to the integrated frame to create a unitized structure, so that the dimensions of the important parts of the apparatus can be reduced. This makes it possible to rely on the integrated frame, which means that with regard to dimensional accuracy, only the integrated frame needs to be managed centrally, and at the same time, by unitizing it, it can be fully adapted to standardization. Moreover, compared to conventional ones, the structure is simple and assembly is relatively easy, and the weight can be reduced. Furthermore, although it has a simple structure, the entire device can be made strong, and the scanning position of the optical scanning system will not be distorted even by its own weight or external force, and the rigidity of the base will not be an issue. This has the advantage that dimensional accuracy can be stably maintained over a long period of time without causing any damage.

[Brief explanation of the drawing]

1 to 3 are external perspective views showing the structure of a conventional device, FIG. 4 is an external perspective view showing an embodiment of the facsimile transmitting device according to the present invention, and FIG. 5 is an integrated structure shown in FIG. 4. External perspective view of the frame,
Figure 6 is an external perspective view of the support frame shown in Figure 4;
The figure is a schematic configuration diagram in which the present device is installed as a floor type on a pedestal. 41...Base, 44...Integrated frame, 51...
... Support frame, 52 ... Guide plate, 56 ... Support metal fittings, 61 ... Fulcrum pin, 62 ... Illumination light source, 6
3, 64...Main roller, 63', 64'...Auxiliary roller, 69...Belt, 70...Solid state scanning element circuit unit, 71...Bracket, 72...Lens.

Claims (1)

[Claims] 1 At the front end of the side plate of the box-shaped frame, which is integrally formed inseparably and has the front and top parts cut out,
A drive roller that serves as a feeding reference for the transmission document, a drive mechanism for the drive roller, and a light source that irradiates the transmission document to generate a reflected image are respectively installed, and the back plate side of the box-shaped frame is mounted. A facsimile transmission device characterized in that an optical scanning system consisting of a lens and a solid-state scanning element circuit unit is attached to the frame, and the box-shaped frame is fixed to a base.