JP3007196U - Fax machine - Google Patents

Abstract

(57) [Abstract] [Purpose] The difference in the illuminance of the LED during reading can be eliminated, and the workability at the time of adjustment can be improved by the easy attachment and detachment of the test chart, and the adjustment of the optical path angle to the CCD is easy. A facsimile device having a simplified roller pressing spring structure is provided. [Structure] Reference white plate 1 for white level correction during document reading
1 is disposed in the optical path 7 for adjustment, and the reference white plate 11 is attached to the mount 10 provided on the lower cover 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a facsimile machine.

[0002]

[Prior art]

 In a facsimile machine, when a transmission original is read and an image is captured, the original is irradiated with a light beam generated by a light source such as an LED, and the reflected light is input to an image pickup device such as a CCD element. At this time, since the area of the document illuminated by the light source has a spread, the illuminance varies depending on the location and unevenness of the light source is likely to occur. In order to correct the mura of this light source for each product, it is common to place a reference white plate at the document reading position and use the video signal waveform read from this reference white plate to correct the unevenness of the light source. . Here, although there is a difference between the video output of the reference white plate and the video output of the original surface, it is desirable that this output ratio be in the range of 0.95 to 1.05.

FIG. 12 is a side sectional view of a conventional facsimile machine, and FIG. 13 is an enlarged view of part A. In both figures, in the conventional facsimile apparatus F1, the white reference whiteboard 11 is attached to the removable upper cover 52 of the apparatus. The upper cover 52 is fixed to the lower cover 51 by a hinge 53 and a lock lever 55. In this way, when the upper cover 52 is fitted to the lower cover 51, a gap 58 having a predetermined size is formed between the reference white plate 11 and the contact glass 12. Reference numeral 13 is a transmission original document placed in the gap 58.

Further, FIG. 14 shows a cross section of a reflection unit of a conventional facsimile apparatus. In the figure, the reflection unit 59 is composed of the reflection mirror 6 supported by the mounting ribs 57 and the mirror clip 15 sandwiching these, and is arranged at a predetermined position in the CCD unit 4 of FIG. When capturing an image from a document, the light reflected from the document generated by the LED in the CCD unit 4 is reflected by the reflecting mirror 6 of the reflecting unit 59 to change the optical path and input to the CCD element. Has become.

Further, in the printing mechanism of the facsimile apparatus, tension rollers 20 for sandwiching the paper are attached to the paper feed roller and the platen roller, respectively, and the tension roller 20 serves as an elastic body for pressing the paper feed roller and the platen roller. A tension roller spring as shown in FIG. 15 is used. In the figure, the tension roller spring 60 has two elastic arms each having a substantially C-shaped cross section, and the restoring force when the angle formed by these two arms is expanded is Each of the tips presses the roller.

Two tension roller springs 60 are usually attached independently of each other. The tension roller springs 60, 60 are separately attached and fixed to the device frame 62 with the screws 61, 61.

[0007]

[Problems to be solved by the device]

 However, since this upper cover is opened and closed quite frequently when paper is replenished or jammed, errors due to rattling during re-fitting and misalignment of the hinge core may occur, and the upper cover may be damaged. There was a drawback that variations due to causes such as shifts in the lock position tend to occur.

If the gap between the document surface and the reference white plate is not uniform due to rattling at the time of attachment, a difference in illuminance distribution occurs. As a result, there is a problem that a difference in illuminance at the white level occurs and the reading performance varies.

In addition, when measuring a video waveform during product evaluation or adjustment, it is necessary to place a test chart at a reading position with a predetermined distance, but conventionally, a test chart was used as a reference white board. Since the measurements were attached arbitrarily, it was difficult to achieve the same measurement conditions. In addition, the position was unstable and accurate inspection and adjustment were not possible, making it difficult to improve workability.

Further, in the reflection unit 59 in the CCD unit 4 as described above, a deviation in the direction of reflected light on the optical path 7 may occur due to a deviation in the angle of the reflecting mirror 6. In such a case, conventionally, the angle of the reflecting mirror 6 is adjusted by sandwiching a sheet material (not shown) in the gap between the reflecting mirror 6 and the rib 57 for mounting it. However, with the conventional adjustment method as described above, it is necessary to remove the reflecting mirror part, disassemble it, insert a sheet material, adjust it, and then attach it to the device again. It had the drawback of being difficult.

Further, the tension roller spring is mounted by fixing the two independent tension roller springs individually and with screws as described above, which is troublesome for the work and the work time cannot be shortened. There was a drawback.

In order to solve the above-mentioned problems of the prior art, the present invention eliminates the difference in the illuminance of the LED at the time of reading, makes the test chart removable, and improves the workability during adjustment. It is an object of the present invention to provide a facsimile device which is easily assembled.

[0013]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, a facsimile apparatus according to the present invention is a facsimile apparatus that adjusts by adjusting a reference white plate in the optical path for white level correction when reading a document. It is characterized by being mounted on a mounting base provided on the side cover. Further, the mounting table is characterized by being provided with a groove into which the test chart is fitted.

Further, it is characterized in that the mounting base is made of an antistatic material. Further, the mounting base is configured to be attachable to and detachable from the lower cover of the facsimile device.

Further, the facsimile apparatus according to the present invention has a reflecting mirror which is supported on the back side by the mounting ribs and is clamped together with the mounting ribs by the mirror clip, and reflects the reflected light from the document to pick up the image. In the reflection unit of the facsimile machine to be introduced into the element, a gap is provided on the side of the mounting rib facing the reflecting mirror, and the gap is opened only at either the upper end or the lower end. The present invention is characterized in that the reflection unit is provided with a through hole having a groove, and an adjusting screw is screwed from the back side of the through hole having the screw groove so that the tip of the adjusting screw is brought into contact with the rear surface of the reflecting mirror.

Further, in the facsimile apparatus according to the present invention, the tips of the two arms are restored by the restoring force when the angle formed by the two arms having elasticity extending in a substantially V-shaped cross section is expanded. In a tension roller spring mechanism using two elastic pieces configured to press the respective rollers, the two elastic pieces are connected by a flexible connecting portion, and the two elastic pieces are connected. It is characterized in that locking projections are provided upright on both ends.

Further, in the above, the two elastic pieces, the connecting portion, and the locking projection piece are integrally configured by one leaf spring material.

Further, in the facsimile apparatus according to the present invention, the tip ends of the two arms are elastically restored by the restoring force when the angle formed by the two elastic arms is expanded. In a tension roller spring mechanism using two elastic pieces configured to press a roller, the two elastic pieces are connected by a coil spring, and at least one arm group on the same side of the two elastic pieces is connected. It is characterized in that one set is further connected.

[0019]

[Action]

 Since the facsimile device according to the present invention is configured by mounting the reference white plate on the mounting base provided on the lower cover of the device, it is possible to avoid an error caused by opening and closing the cover, and to correct the white level when reading a document. It is highly efficient and accurate. Further, since the mounting table is provided with the groove into which the test chart is fitted, the measurement using the test chart can be performed with high efficiency.

Further, since the mounting base is made of the antistatic material, the static electricity generated on the paper is effectively discharged through the mounting base. Further, since the mounting base is configured to be attachable to and detachable from the lower cover of the facsimile device, the contact glass can be easily removed when cleaning the contact glass, and maintainability is improved.

Further, in the facsimile apparatus according to the present invention, a hole penetrating to a gap provided in a mounting rib for supporting a reflecting mirror sandwiched by mirror clips, which reflects reflected light from a document and introduces it into an image pickup device, is formed. Since the adjusting screw is screwed from the back side and its tip is brought into contact with the rear surface of the reflecting mirror, the angle of the reflecting mirror can be easily changed by pushing or pulling the tip of the adjusting screw.

Further, in the facsimile apparatus according to the present invention, two elastic pieces are connected by a flexible connecting portion, and locking projection pieces are provided upright at both ends of the two elastic pieces connected. The roller spring having the above structure can be easily fitted and locked in the locking groove of the support member by bending the connecting portion.

Here, by forming the two elastic pieces, the connecting portion, and the locking projection piece in one piece by using one leaf spring material, a low-cost tension roller spring mechanism is realized.

Further, in the tension roller spring mechanism of the facsimile apparatus, the two elastic pieces are coil springs, and at least one of the two arm pieces on the same side is connected to each other. It With this configuration, a tension roller spring mechanism that is easier and cheaper to manufacture is realized.

[0025]

【Example】

 An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a sectional view of an embodiment of a facsimile apparatus according to the present invention in an open state. 2 is a cross-sectional view of the main part of the facsimile apparatus of FIG. Further, FIG. 3 is a perspective view of an embodiment of the facsimile apparatus according to the present invention. In the figure, a facsimile apparatus F according to the present invention is provided with a reference white plate 11 in an optical path 7 for adjustment in order to correct a white level when reading a document. A contact glass 12 is attached to a frame 9 which is integrated with the lower cover 1 or fixed to the lower cover 1, and a mounting base 10 is attached above the contact glass 12.

The white reference white plate 11 is attached to the lower end of the mount 10 in the direction of the contact glass 12. Here, the mount 10 is mounted between the reference white plate 11 and the contact glass 12 so that a space 10G through which the document 13 can pass is formed. As described above, in this embodiment, the reference white plate 11 is attached to the lower cover side of the facsimile apparatus, so that the gap 10G is always a predetermined dimension, and therefore the position of the reference white plate 11 is fixed and immovable. . That is, the position of the reference white plate 11 is not affected by the opening and closing of the upper cover 2 and the like unlike the conventional case. As a result, the cause of gap variation can be eliminated and stable correction can be performed. In the figure, 4 is a CCD unit, 5 is an image sensor (CCD) in the CCD unit 4, 6 is a reflection unit in the CCD unit 4, and 8 is an LED.

FIG. 4 is a sectional view of a main part of a mounting base in the embodiment of the facsimile apparatus according to the present invention. FIG. 5 is a sectional view taken along line WW of FIG. As shown in FIGS. 3 and 4, chart paper mounting grooves 10B are provided inside both ends of the mounting base 10, and a test chart paper (test chart) 14 is inserted into the chart paper mounting grooves 10B. That is, the mounting base 10 is configured to include the chart paper mounting groove 10B in which the test chart paper 14 can be attached and detached.

As a result, not only can the test chart 14 be arbitrarily and easily attached to each product, but evaluation and adjustment work of each product can be performed easily and efficiently, and each product can be subjected to the same conditions. Therefore, the accuracy of the examination can be improved. In addition, workability in the study and development stage can be improved.

Further, if the mounting base 10 and the like are made of an antistatic material, parts such as a static elimination brush, which have been conventionally required, are not required, and therefore the electrostatic countermeasures for paper can be executed at a lower cost. Further, as shown in FIGS. 4 and 5, the mounting base 10 can be configured to be fitted into the lower cover 1 by hooks 10C and 10D. With this configuration, the mounting base 10 can be easily removed when cleaning the contact glass 12.

FIG. 6 is a sectional view of the CCD unit in the embodiment of the facsimile apparatus according to the present invention, and FIG. 7 is a sectional view of the reflection unit thereof. The light path 7 of the light emitted from the LED 8 in the CCD unit 4 in FIG. 6 and reflected from the original is adjusted by the reflection unit 18 and introduced into the image pickup device CCD. The reflection unit 18 includes the reflection mirror 6, a mounting rib 16 that supports the back side of the reflection mirror 6, and a mirror clip 15 that holds the reflection mirror 6 and the mounting rib 16 therebetween.

Here, on the side of the mounting rib 16 facing the reflecting mirror 6, a gap 16A that is open only at the upper end is provided, and a through hole 16C with a screw groove 16B that penetrates from the rear surface of the mounting rib 16 to the gap 16A is formed. The adjusting screw 17 is provided by screwing the adjusting screw 17 from the back side of the through hole 16C having the screw groove 16B, and the tip is brought into contact with the rear surface of the reflecting mirror 6 as the pressing end 17A.

The reflecting mirror 6 and the mounting rib 16 are tilted in the direction of closing the space 16 A by the mirror clip 15. With this configuration, the tilting of the reflecting mirror 6 is adjusted by pushing or pulling the adjusting screw 17. Can be adjusted. That is, by adjusting the degree to which the reflecting mirror 6 is pushed up by the pressing end 17A of the adjusting screw 17, the angle of the reflecting mirror can be easily adjusted, and the optical path can be adjusted in the arrow 7A or 7B direction. Moreover, since the reflection unit 18 can be adjusted while being placed on the jig without removing it from the apparatus, workability can be greatly improved.

FIG. 8 is an exploded perspective view of an embodiment of a tension roller spring mechanism provided in the facsimile apparatus according to the present invention. Further, FIG. 9 is a sectional view of the main part. In both figures, a tension roller spring mechanism 30 included in a facsimile machine according to the present invention is provided with two sets of elastic pieces having a first elastic portion 22A and a second elastic portion 22B extending in a substantially V-shaped cross section at both ends. , A roller spring 22 having a structure in which central portions are connected by a flexible connecting portion 22C, and locking projections 22D are respectively provided on both ends, and two locking projections 22D of a roller spring 22. , 22D, and a support member 23 having locking grooves 23B, 23B. In the above description, it is desirable that each elastic portion, the connecting portion, and the locking projection piece be integrally formed by one leaf spring material.

With this configuration, by bending the flexible connecting portion 22C, the upright locking protrusions 22D and 22D are fitted into the locking grooves 23B and 23B of the support member 23 and locked. You can Here, by fitting the fitting insertion holes 22E and 22E provided in the connecting portion 22C into the fitting protrusions 23C and 23C of the support member 23, the positioning is surely performed.

As described above, when the roller spring 22 is attached to the support member 23, the restoring force when the angle formed by the two arms of the first elastic portion 22A and the second elastic portion 22B is expanded is The tip of the first elastic portion 22A presses the paper discharge roller 21, and the tip of the second elastic portion 22B presses the shaft of the tension roller 20. This ensures that the paper is pinched between the rollers.

FIG. 10 shows an exploded perspective view of another embodiment of the tension roller spring mechanism provided in the facsimile apparatus according to the present invention. 11 is a side view of the tension roller spring mechanism of FIG. In both figures, a roller spring 25 of a tension roller spring mechanism provided in a facsimile machine according to the present invention comprises a first spring 25A and a second spring 25B. A pair of is formed.

Since the roller spring 25 is easily bent inward (in the direction of arrow 26 in FIG. 10), the coil spring 25C can be easily fitted to the fixing rib 27. When the roller spring 25 is attached to the fixed rib 27 as described above, the angle formed by the two arms of the first elastic portion 25A and the second elastic portion 25B when the roller spring 25 is expanded in the direction of arrow 28 in FIG. With the restoring force, the tip of the first elastic portion 25A presses the paper discharge roller 21, and the tip of the second elastic portion 25B presses the shaft of the tension roller 20. This allows the paper to be reliably sandwiched between the rollers. Reference numeral 19 is a platen roller.

[0038]

[Effect of device]

 Since the facsimile apparatus according to the present invention is configured as described above, it has the following effects. (1) Since the facsimile machine according to the present invention is configured such that the reference white plate is mounted on the mounting base provided on the lower cover of the device, it is possible to avoid an error caused by opening and closing the cover, and to prevent the original surface from the reference white plate. It is possible to suppress the variation in the gap and reduce the illuminance difference between the LEDs. This makes it possible to perform white level correction when reading a document with high efficiency and accuracy. (2) Since the test chart fitting groove is provided on the mounting table so that the test chart can be inserted at the document surface reading position, the evaluation measurement and adjustment work of each product by using the test chart can be performed with high efficiency. Can be implemented.

(3) Since the mounting base is made of antistatic resin, the static electricity generated on the paper is effectively discharged through the mounting base. (4) Since the mounting base is configured to be attachable / detachable to / from the lower cover of the facsimile device, it can be easily removed when cleaning the contact glass, which is easy to use and improves maintainability.

(5) The reflection unit of the facsimile apparatus according to the present invention penetrates up to the gap provided in the mounting rib that supports the reflection mirror sandwiched by the mirror clip that reflects the reflected light from the document and introduces it into the image pickup device. Since the adjustment screw is screwed into the hole from the back side and the tip of the adjustment screw is brought into contact with the back surface of the reflector, it is possible to change the angle of the reflector and perform fine adjustment of the optical path only by adjusting the adjustment screw. become.

(6) Further, in the facsimile machine according to the present invention, the two elastic pieces are connected by the flexible connecting portion in the tension roller spring mechanism provided therein, and the two elastic pieces are connected. Roller springs, which have locking protrusions on both ends, are bent so that the joints can be flexibly fitted into the locking groove of the support member and locked. The effect is great because it is improved.

(7) Further, by integrally forming the two elastic pieces, the connecting portion, and the locking projection piece with one leaf spring material, a low-cost tension roller spring mechanism can be realized.

(8) Further, in the tension roller spring mechanism, the two elastic pieces are constituted by coil springs, and at least one set of the arms on the same side of the two elastic pieces is connected. By configuring, a tension roller spring mechanism that is easier to manufacture and cheaper can be realized.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of a facsimile apparatus according to the present invention in an open state.

FIG. 2 is a cross-sectional view of a main part of the facsimile apparatus of FIG.

FIG. 3 is a perspective view of an embodiment of a facsimile apparatus according to the present invention.

FIG. 4 is a sectional view of an essential part of a mounting base in an embodiment of a facsimile apparatus according to the present invention.

5 is a sectional view taken along line WW of FIG.

FIG. 6 is a sectional view of a CCD unit in an embodiment of a facsimile apparatus according to the present invention.

7 is a cross-sectional view of the reflection unit of FIG.

FIG. 8 is an exploded perspective view of an embodiment of a tension roller spring mechanism included in the facsimile device according to the present invention.

9 is a cross-sectional view of the main parts of the tension roller spring mechanism of FIG.

FIG. 10 is an exploded perspective view of another embodiment of the tension roller spring mechanism provided in the facsimile device according to the present invention.

11 is a side view of the tension roller spring mechanism of FIG.

FIG. 12 is a side sectional view of a conventional facsimile apparatus.

FIG. 13 is an enlarged view of a main part of FIG.

FIG. 14 is a sectional view of a reflection unit of a conventional facsimile apparatus.

FIG. 15 is an exploded perspective view of a tension roller spring mechanism of a conventional facsimile device.

[Explanation of symbols]

 1 Lower Cover 2 Upper Cover 4 CCD Unit 5 CCD 6 Reflector 7 Optical Path 8 LED 9 Frame 10 Mounting Base 11 Reference White Plate 12 Contact Glass 13 Original F Facsimile Machine

Claims (8)

[Scope of utility model registration request] 1. A facsimile apparatus in which a reference white plate is disposed in an optical path for white level correction during document reading and adjustment is performed by mounting the reference white plate on a mount provided on a lower cover of the facsimile apparatus. A facsimile machine characterized by the above. 2. The facsimile apparatus according to claim 1, wherein said mounting base is provided with a groove into which a test chart is fitted. 3. The facsimile apparatus according to claim 1, wherein the mounting base is made of an antistatic material. 4. The mounting base is configured to be attachable to and detachable from a lower cover of a facsimile device.
2. The facsimile machine according to 2 or 3. 5. A reflection unit of a facsimile apparatus, which has a reflecting mirror, the back side of which is supported by a mounting rib, and which is sandwiched together with the mounting rib by a mirror clip, and which reflects reflected light from a document and introduces it into an image sensor. , A side of the mounting rib facing the reflecting mirror is provided with a void that is open at only one of the upper end and the lower end, and a through hole with a screw groove is provided from the back side of the mounting rib to the void, and the adjusting screw is A facsimile apparatus comprising a reflection unit configured to be screwed from the back side of a through hole having a thread groove so that the tip of the adjusting screw is brought into contact with the back surface of the reflecting mirror. 6. The restoring force when the angle formed by two elastic arms, each of which has a substantially V-shaped cross section, is expanded by the restoring force.
In a tension roller spring mechanism using two elastic pieces in which the tips of the arms press the rollers, the two elastic pieces are connected by a flexible connecting portion, and the two elastic pieces are connected. Facsimile machine characterized in that locking projections are provided upright at both ends of the elastic piece. 7. The two elastic pieces, the connecting portion, and the locking projection piece are combined into one.
7. The facsimile apparatus according to claim 6, wherein the facsimile apparatus is integrally formed of a single plate spring material. 8. An elastic member 2 extending in a V shape.
In a tension roller spring mechanism using two elastic pieces configured such that the tips of the two arms press the rollers by the restoring force when the angle formed by the two arms is expanded,
By connecting the two elastic pieces with a coil spring,
A facsimile machine characterized in that at least one set of arms of the same side of each elastic piece is further connected.