CN103376057A - File size detection device and method - Google Patents
File size detection device and method Download PDFInfo
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- CN103376057A CN103376057A CN2012101287758A CN201210128775A CN103376057A CN 103376057 A CN103376057 A CN 103376057A CN 2012101287758 A CN2012101287758 A CN 2012101287758A CN 201210128775 A CN201210128775 A CN 201210128775A CN 103376057 A CN103376057 A CN 103376057A
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Abstract
The invention provides a file size detection device and method. The file size detection device comprises a central switch, at least two switches and at least one sensor, wherein the two switches are arranged on the two opposite sides of the central switch respectively in a spaced mode, the sensor simultaneously corresponds to the two switches on the two opposite sides of the central switch, one of the two switches triggers the sensor under the initial condition of a file which is not placed, and the other of the two switches does not trigger the sensor under the initial condition of the file which is not placed. Due to the structural arrangement and the detection method, the detection method for judging the sizes of N*2 types of paper through N sensors can be achieved, and N is a positive integer such as 2, 3 and 4. Therefore, the file size detection device and the detection method of the file sizes have the advantages of being simple in structure and low in cost.
Description
Technical field
The present invention relates to a kind of document size detecting device, particularly relate to a kind of simple in structure and lower-cost document size detecting device and detection method thereof.
Background technology
See also Figure 12, be a kind of existing document size detecting device 900.This document size detecting device 900 comprises sheet holding member 902, the first optical flame detector 904, the first switch 906, the second optical flame detector 908, second switch 910, the 3rd optical flame detector 912 and the 3rd switch 914.The first switch 906, second switch 910 and the 3rd switch 914 are arranged at sheet holding member 902, the upper surface of sheet holding member 902 is stretched out in each switch 906,910,914 compartment of terrain, top, and each switch 906,910,914 tail end correspond respectively to each optical flame detector 904,908,912.
Each optical flame detector 904,908,912 has respectively light emission part 916 and light receiver 91 8, and operation logic is all identical, now only take the first optical flame detector 904 as the example explanation, when between light emission part 916 and the light receiver 918 during without any stopping, the light that light emission part 916 sends can be received by light receiver 918, and then the first optical flame detector 904 output high levle signals.When the tail end of the first switch 906 moves to light emission part 916 with light receiver 918 centre, the light that light emission part 916 sends is stopped by the tail end of the first switch 906, cause light receiver 918 can't receive light, and then the first optical flame detector 904 output low level signals.
When document size detecting device 900 operation, each optical flame detector 904,908,912 and each switch 906,910,914 operation as described below.When sheet holding member 902 was not placed file, the upper surface of sheet holding member 902 was stretched out respectively on first, second, third switch 906,910,914 top, and its tail end is arranged at respectively outside first, second, third optical flame detector 904,908,912.Therefore, first, second, third optical flame detector 904,908,912 sends respectively the high levle signal.So, when first, second, third optical flame detector 904,908,912 sends respectively the high levle signal, can judge on the sheet holding member 902 and not place file.
When sheet holding member 902 was placed the small size part, small-sized document only can compress the top of the first switch 906, and then drives the tail end of the first switch 906, move into the first optical flame detector 904, and interdict the first optical flame detector 904, therefore, the signal that the first optical flame detector 904 sends becomes low level by high levle.So when the first optical flame detector 904 sends the low level signal, and the second optical flame detector 908 and the 3rd optical flame detector 912 can be judged on the sheet holding member 902 and place small-sized document when sending respectively the high levle signal.
In sheet holding member 902 is placed during the size file, middle size file can compress the top of the first switch 906 and second switch 910, and then the tail end that drives the first switch 906 and second switch 910 moves into respectively the first optical flame detector 904 and the second optical flame detector 908, and interdict the first optical flame detector 904 and the second optical flame detector 908, therefore, the signal that sends of the first optical flame detector 904 and the second optical flame detector 908 becomes low level by high levle respectively.So when the first optical flame detector 904 and the second optical flame detector 908 send respectively the low level signal, and the 3rd optical flame detector 912 is when sending the high levle signal, can judge place on the sheet holding member 902 in the size file.
When sheet holding member 902 is placed the large scale file, the large scale file can compress first, second, third switch 906,910,914 top, and then drive first, second, third switch 906,910,914 tail end moves into respectively first, second, third optical flame detector 904,908,912, and interdict first, second, third optical flame detector 904,908,912, therefore, first, second, third optical flame detector 904,908,912 signals that send become low level by high levle respectively.So, when first, second, third optical flame detector 904,908,912 sends respectively the low level signal, can judge and place the large scale file on the sheet holding member 902.
But above-mentioned document size detecting device 900 needs three optical flame detectors and the mutual induction of three switch phases to close the file that could detect three kinds of sizes.Therefore, it is more that this kind arranges assembly, and structure is complicated, and more original paper also can need more cost.
Summary of the invention
One of purpose of the present invention is to provide a kind of simple in structure and lower-cost document size detecting device for above-mentioned the deficiencies in the prior art.
For achieving the above object, the invention provides a kind of document size detecting device, this document size detecting device comprises center switch, at least two switches and at least one inductor, be arranged to described two switch gaps the relative both sides of center switch at least, each inductor while at least one inductor is corresponding to this two switch of the relative both sides of center switch, a switch in two switches corresponding with each inductor triggers this inductor under the initial conditions of not placing file, two switches corresponding with each inductor another switch does not wherein trigger this inductor under the initial conditions of not placing file.
The present invention also provides a kind of document size detecting device, is arranged at a sheet holding member, comprises one first switch, a second switch, one the 3rd switch and one first optical flame detector; The first switch is provided with a top and a tail end, and stretch out on this sheet holding member on the top of this first switch; This second switch is connected in this sheet holding member; The 3rd switch is provided with a top and a tail end, stretch out on the sheet holding member on the top of the 3rd switch, the space, top of the top of this first switch, second switch and the 3rd switch, this second switch are arranged between the top of the top of the first switch and the 3rd switch; This first optical flame detector is arranged in the sheet holding member, this first optical flame detector is provided with a smooth emission part and a light receiver, the tail end of this first switch is arranged between the light emission part and light receiver of the first optical flame detector, and the tail end of the 3rd switch is arranged at outside light emission part and the light receiver.
A kind of document size detecting device is arranged at a paper path, comprises one first switch, a second switch, one the 3rd switch and one first optical flame detector; This first switch is provided with a top and a tail end, and this paper path is stretched on the top of this first switch; This second switch is arranged at this paper path; The 3rd switch is provided with a top and a tail end, this paper path is stretched on the top of the 3rd switch, the space, top of the top of this first switch, second switch and the 3rd switch, this second switch are arranged between the top of the top of this first switch and the 3rd switch; This first optical flame detector is provided with a smooth emission part and a light receiver, and the tail end of this first switch is arranged between the light emission part and light receiver of this first optical flame detector, and the tail end of the 3rd switch is arranged at outside this light emission part and the light receiver.
Another object of the present invention is to provide a kind of document size detection method of utilizing above-mentioned document size detecting device, comprise the following steps:
One center switch is set;
The switch of equal number is set in the compartment of terrain, relative both sides of center switch;
Take center switch as mid point, near and far or by far away and near, with the switch of the relative both sides of center switch take two as one group of ground corresponding to same inductor;
The switch that will be positioned at center switch one side triggers its corresponding inductor under the initial conditions of not placing file; And
The switch that will be positioned at the center switch opposite side does not trigger its corresponding inductor under the initial conditions of not placing file.
The present invention also provides a kind of document size detection method, comprises the following steps:
One first optical flame detector is set in a sheet holding member;
One first switch, a second switch and one the 3rd switch sequentially are set on this sheet holding member;
Make this first switch cover this this first optical flame detector, and make the 3rd switch leave this first optical flame detector;
When the file of different size is positioned over this sheet holding member, described the first switch and the 3rd switch are activated by file, and then trigger this first optical flame detector, and this second switch is activated and triggers by file, and then described the first optical flame detector and second switch are triggered and can produce altogether maximum four kinds of accurate position signals to detect the file of maximum four kinds of sizes afterwards.
As mentioned above, document size detecting device of the present invention arranges and method by this structure, can reach the detection method with N inductor judgement N*2 kind antiquarian, and N is 2,3, the 4... positive integer.Therefore, document size detecting device and detection method thereof have simple in structure and lower-cost advantage.
Description of drawings
Fig. 1 is the synoptic diagram of document size detecting device the first embodiment of the present invention.
Fig. 2 is the operation synoptic diagram of document size detecting device the first embodiment of the present invention to Fig. 5.
Fig. 6 is the operation synoptic diagram of document size detecting device the second embodiment of the present invention to Fig. 9.
Figure 10 is the synoptic diagram of document size detecting device the 3rd embodiment of the present invention.
Figure 11 is the synoptic diagram of document size detecting device the 4th embodiment of the present invention.
Figure 12 is a kind of synoptic diagram of existing file size detecting device.
Wherein, description of reference numerals is as follows:
Document size detecting device 100 sheet holding members 2
The first switch 4 second switches 6
The 3rd switch 8 first optical flame detectors 10
The second optical flame detector 12 smooth emission parts 14
20 the 4th switches 22 of boring a hole
The 5th switch 24 the 3rd optical flame detector 26
Embodiment
By describing technology contents of the present invention, structural attitude in detail, realized purpose and effect, below in conjunction with embodiment and cooperate that accompanying drawing is detailed to give explanation.
See also Fig. 1, document size detecting device 100 is comprised of center switch, two switches and at least one inductor at least.Comprise sheet holding member 2, the first switch 4, second switch 6 (center switch), the 3rd switch 8, the first optical flame detector 10 and the second optical flame detector 12 at first embodiment of the present invention File size detecting device 100.The first switch 4, second switch 6 and the 3rd switch 8 are arranged at respectively sheet holding member 2, the upper surface of sheet holding member 2 is stretched out in the compartment of terrain, top of the first switch 4, second switch 6 and the 3rd switch 8, the tail end of the first switch 4 and the 3rd switch 8 is corresponding to the first optical flame detector 10, and the tail end of second switch 6 is corresponding to the second optical flame detector 12.
The first optical flame detector 10 and the second optical flame detector 12 have respectively light emission part 14 and light receiver 16, and operation logic is all identical, now only take the first optical flame detector 10 as the example explanation, when between light emission part 14 and the light receiver 16 during without any stopping, the light that light emission part 14 sends can be received by light receiver 16, and then the first optical flame detector 10 outputs first accurate signal.When the tail end of the first switch 4 moved to light emission part 14 with light receiver 16 centre, the light that light emission part 14 sends was stopped by the tail end of the first switch 4, causes light receiver 16 can't receive light, and then the first optical flame detector 10 outputs second accurate signal.In the present embodiment, first an accurate signal is the high levle signal, and second an accurate signal is the low level signal.When real enforcement, first an accurate signal can be the low level signal, and therefore, second an accurate signal is the high levle signal.
See also Fig. 1 to Fig. 5, when document size detecting device 100 operation, the operation of the first switch 4, second switch 6, the 3rd switch 8, the first optical flame detector 10 and the second optical flame detector 12 is as described below.
See also Fig. 1 and Fig. 2, when sheet holding member 2 is not placed file or is placed small-sized document 200, the upper surface of sheet holding member 2 is stretched out respectively on the top of the first switch 4, second switch 6 and the 3rd switch 8, the tail end of the first switch 4 stretches in the first optical flame detector 10, and interdict the first optical flame detector 10, the tail end of second switch 6 stretches in the second optical flame detector 12, and the tail end that interdicts the second optical flame detector 12, the three switches 8 is arranged at outside the first optical flame detector 10.Therefore, the first optical flame detector 10 and the second optical flame detector 12 send respectively the low level signal.So, when the first optical flame detector 10 and the second optical flame detector 12 send respectively the low level signal, can judge and not place file on the sheet holding member 2 or place small-sized document 200.
See also Fig. 3, during size element 300, middle size file 300 only can compress the top of the first switch 4 in sheet holding member 2 is placed, and then the tail end that drives the first switch 4 moves away the first optical flame detector 10, therefore, the signal that sends of the first optical flame detector 10 becomes high levle by low level.So when the first optical flame detector 10 sends the high levle signal, and the second optical flame detector 12 is when sending the low level signal, can judge place on the sheet holding member 2 in size file 300.
See also Fig. 4, when sheet holding member 2 is placed large scale file 400, large scale file 400 can compress the top of the first switch 4 and second switch 6, and then the tail end that drives the first switch 4 and second switch 6 moves away respectively the first optical flame detector 10 and the second optical flame detector 12, therefore, the signal that sends of the first optical flame detector 10 and the second optical flame detector 12 becomes high levle by low level respectively.So, when the first optical flame detector 4 and the second optical flame detector 6 send respectively the high levle signal, can judge and place large scale file 400 on the sheet holding member 2.
See also Fig. 5, when sheet holding member 2 is placed oversize file 500, oversize file 500 can compress the top of the first switch 4, second switch 6 and the 3rd switch 8, and then the tail end that drives the first switch 4 and second switch 6 moves away respectively the first optical flame detector 10 and the second optical flame detector 12, and the tail end that drives the 3rd switch 8 moves and stretches into the first switch 4, and interdicts the first optical flame detector 10.Therefore, the first optical flame detector 10 sends the low level signal, and the second optical flame detector 12 sends the high levle signal.So when the first optical flame detector 10 sends the low level signal, and the second optical flame detector 12 can be judged and place oversize file 500 on the sheet holding member 2 when sending the high levle signal.
Seeing also Fig. 6 to Fig. 9, is the second embodiment of document size detecting device 100 of the present invention.The textural difference of the second embodiment and the first embodiment be in, in a second embodiment, when sheet holding member 2 was not placed file, the tail end of second switch 6 (center switch) was arranged at outside the second optical flame detector 12.
In a second embodiment, when document size detecting device 100 operation, the operation of the first switch 4, second switch 6, the 3rd switch 8, the first optical flame detector 10 and the second optical flame detector 12 is as described below.
See also Fig. 6, when sheet holding member 2 is not placed file or is placed small-sized document 200, the upper surface of sheet holding member 2 is stretched out respectively on the top of the first switch 4, second switch 6 and the 3rd switch 8, the tail end of the first switch 4 stretches in the first optical flame detector 10, and interdict the first optical flame detector 10, the tail end of second switch 6 is arranged at outside the second optical flame detector 12, and the tail end of the 3rd switch 8 is arranged at outside the first optical flame detector 10.Therefore, the first optical flame detector 10 sends the low level signal, and the second optical flame detector 12 sends the high levle signal.So when the first optical flame detector 10 sends the low level signal, and the second optical flame detector 12 can be judged and not place file on the sheet holding member 2 or place small-sized document 200 when sending the high levle signal.
See also Fig. 7, during size element 300, middle size file 300 only can compress the top of the first switch 4 in sheet holding member 2 is placed, and then the tail end that drives the first switch 4 moves away the first optical flame detector 10, therefore, the signal that sends of the first optical flame detector 10 becomes high levle by low level.So, when the first optical flame detector 10 and the second optical flame detector 12 send respectively the high levle signal, can judge place on the sheet holding member 2 in size file 300.
See also Fig. 8, when sheet holding member 2 is placed large scale file 400, large scale file 400 can compress the top of the first switch 4 and second switch 6, and then the tail end that drives the first switch 4 leaves the first optical flame detector 10, and the tail end that drives second switch moves and stretches into the second optical flame detector 12, and therefore, the first optical flame detector 10 sends the high levle signal, and the second optical flame detector 12 sends the low level signal.So, when the first optical flame detector 10 sends the high levle signal, and, when the second optical flame detector 12 sends the low level signal, can judge and place large scale file 400 on the sheet holding member 2.
See also Fig. 9, when sheet holding member 2 is placed oversize file 500, oversize file 500 can compress the top of the first switch 4, second switch 6 and the 3rd switch 8, and then the tail end that drives the first switch 4 moves away the first optical flame detector 10, and the tail end that drives second switch 6 and the 3rd switch 8 is mobile respectively to stretch into the second optical flame detector 12 and the first optical flame detector 10, and interdicts the second optical flame detector 12 and the first optical flame detector 10.Therefore, the first optical flame detector 10 and the second optical flame detector 12 send respectively the low level signal.So, when the first optical flame detector 10 and the second optical flame detector 12 send respectively the low level signal, can judge and place oversize file 500 on the sheet holding member 2.
See also Figure 10, the 3rd embodiment of document size detecting device 100 of the present invention, in the 3rd embodiment, second switch 6 (center switch) can be replaced by photosensitive components 18 with the second optical flame detector 12, photosensitive components 18 is arranged in the sheet holding member 2, and sheet holding member 2 offers perforation 20 corresponding to photosensitive components 18 places.When file is positioned on the sheet holding member 2, and cover perforation 20 o'clock, photosensitive components 18 can't sense extraneous light, therefore sends the low level signal.When perforation 20 not during crested, extraneous light can enter photosensitive components 18 via perforation 20, and therefore, photosensitive components 18 senses extraneous light, and then sends the high levle signal.
Seeing also Figure 11, is the 4th embodiment of document size detecting device 100 of the present invention, and in the 4th embodiment, document size detecting device 100 of the present invention also comprises the 4th switch 22, the 5th switch 24 and the 3rd optical flame detector 26.The 4th switch 22 and the 5th switch 24 are arranged at respectively the upper surface that stretches out sheet holding member 2 between the top of sheet holding member 2, the four switches 22 and the 5th switch 24, and the tail end of the 4th switch 22 and the 5th switch 24 is corresponding to the 3rd optical flame detector 26.When real enforcement, the inductor that optical flame detector can other identical functions replaces.
In the present embodiment, the method for operation of document size detecting device 100 can and go out by above-mentioned the first embodiment to the three embodiment derivation, does not do at this and gives unnecessary details.The first, second, third, fourth, the 5th switch 4 of present embodiment File size detecting device 100,6,8,22,24 whens operation, and then it is as follows to trigger the accurate position signal condition table that first, second, third optical flame detector 10,12,26 produces:
By above-mentioned the first embodiment to the four embodiment as can be known, by with top the 4th switch 22 and rearmost the 5th switch 24 corresponding to same optical flame detector, i.e. the 3rd optical flame detector 26; With the 3rd switch 8 of the first switch 4 of inferior front and time back corresponding to same optical flame detector, i.e. the first optical flame detector 10; And at the placement of place, centre corresponding independent of one another second switch 6 and the second optical flame detector 12; And the 4th switch 22 and first switch 4 in the place ahead of place's second switch 6 interdict its corresponding the 3rd optical flame detector 26 and the first optical flame detector 10 in the middle of will being positioned under the initial conditions of not placing file; And the 5th switch 24 at the rear of the second switch 6 at place and the 3rd switch 8 leaves its corresponding the 3rd optical flame detector 26 and the first optical flame detector 10 under the initial conditions of not placing file the structure that arranges in the middle of will being positioned at, just can reach the detection method of judging N*2 kind antiquarian with N optical flame detector, N is 2,3, the 4... positive integer.Such as the 3rd embodiment, in the specific implementation, when the file of different size is positioned over sheet holding member 2, the first switch 4 and the 3rd switch 8 are activated by file, and then trigger the first optical flame detector 10, and photosensitive components 18 (second switch) is activated and triggers by file, and then the first optical flame detector 10 and photosensitive components 18 are triggered and can produce altogether maximum four kinds of accurate position signals to detect the file of maximum four kinds of sizes afterwards.
In sum, the present invention is by arranging a center switch (second switch 6), the switch of equal number is set in the compartment of terrain, relative both sides of center switch, and (second switch 6 the place aheads arrange the 4th switch 22 and the first switch 4, second switch 6 rears arrange the 5th switch 24 and the 3rd switch 8), take center switch as mid point, from near and far or by far away and near, with the switch of the relative both sides of center switch take two as one group of ground corresponding to same optical flame detector (with the 3rd switch 8 of the first switch 4 of inferior front and time back corresponding to the first optical flame detector 10, with top the 4th switch 22 and rearmost the 5th switch 24 corresponding to the 3rd optical flame detector 26), to be positioned at the switch of center switch one side in its corresponding optical flame detector of blocking under the initial conditions of not placing file (the 4th switch 22 and first switch 4 in the place ahead of place's second switch 6 interdict its corresponding the 3rd optical flame detector 26 and the first optical flame detector 10 in the middle of will being positioned under the initial conditions of not placing file), to be positioned at the switch of center switch opposite side in leaving its corresponding optical flame detector (the 5th switch 24 and the 3rd switch 8 at the rear of place's second switch 6 leave its corresponding the 3rd optical flame detector 26 and the first optical flame detector 10 in the middle of will being positioned under the initial conditions of not placing file) under the initial conditions of not placing file, and arrange whereby and just can reach the detection method of judging N*2 kind antiquarian with N optical flame detector.
When real enforcement, document size detecting device 100 of the present invention does not limit and is arranged on the sheet holding member 2, also can be arranged in the paper path of the file handlers such as scanner, printer, facsimile recorder, duplicating machine, the top of each switch is stretched in the paper path, when paper passed through paper path, document size detecting device 100 of the present invention can detect the antiquarian in the paper path.
Claims (10)
1. a document size detecting device is characterized in that: comprise a center switch, two switches and at least one inductor at least; Be arranged to described two switch gaps the relative both sides of center switch at least, each inductor while in described at least one inductor is corresponding to two switches of the relative both sides of described center switch, a switch in two switches corresponding with each inductor triggers this inductor under the initial conditions of not placing file, two switches corresponding with each inductor another switch does not wherein trigger this inductor under the initial conditions of not placing file.
2. document size detecting device as claimed in claim 1, it is characterized in that: described inductor is optical flame detector, a switch in two switches corresponding with each inductor interdicts this inductor under the initial conditions of not placing file, two switches corresponding with each inductor another switch does not wherein interdict this inductor under the initial conditions of not placing file.
3. a document size detecting device is arranged at a sheet holding member, it is characterized in that: comprise one first switch, a second switch, one the 3rd switch and one first optical flame detector; The first switch is provided with a top and a tail end, and stretch out on this sheet holding member on the top of this first switch; This second switch is connected in this sheet holding member; The 3rd switch is provided with a top and a tail end, stretch out on the sheet holding member on the top of the 3rd switch, the space, top of the top of this first switch, second switch and the 3rd switch, this second switch are arranged between the top of the top of the first switch and the 3rd switch; This first optical flame detector is arranged in the sheet holding member, this first optical flame detector is provided with a smooth emission part and a light receiver, the tail end of this first switch is arranged between the light emission part and light receiver of the first optical flame detector, and the tail end of the 3rd switch is arranged at outside light emission part and the light receiver.
4. document size detecting device as claimed in claim 3, it is characterized in that: described second switch comprises a photosensitive components, this photosensitive components is arranged at this sheet holding member below, and this sheet holding member is provided with the perforation of a corresponding photosensitive components.
5. document size detecting device as claimed in claim 3, it is characterized in that: described second switch comprises a top, a tail end and one second optical flame detector, this second optical flame detector is arranged in this sheet holding member, this second optical flame detector is provided with a smooth emission part and a light receiver, stretch out on the sheet holding member on the top of this second switch, and be arranged between the top of the top of this first switch and the 3rd switch, the tail end of this second switch is corresponding to this second optical flame detector.
6. document size detecting device as claimed in claim 5, it is characterized in that: the tail end of described second switch is arranged between the light emission part and light receiver of this second optical flame detector.
7. document size detecting device as claimed in claim 5, it is characterized in that: the tail end of described second switch is arranged at outside the light emission part and light receiver of this second optical flame detector.
8. a document size detecting device is arranged at a paper path, it is characterized in that: comprise one first switch, a second switch, one the 3rd switch and one first optical flame detector; This first switch is provided with a top and a tail end, and this paper path is stretched on the top of this first switch; This second switch is arranged at this paper path; The 3rd switch is provided with a top and a tail end, this paper path is stretched on the top of the 3rd switch, the space, top of the top of this first switch, second switch and the 3rd switch, this second switch are arranged between the top of the top of this first switch and the 3rd switch; This first optical flame detector is provided with a smooth emission part and a light receiver, and the tail end of this first switch is arranged between the light emission part and light receiver of this first optical flame detector, and the tail end of the 3rd switch is arranged at outside this light emission part and the light receiver.
9. a document size detection method is characterized in that, comprises the following steps:
One center switch is set;
The switch of equal number is set in the compartment of terrain, relative both sides of this center switch;
Take this center switch as mid point, near and far or by far away and near, with the switch of these relative both sides of center switch take two as one group of ground corresponding to same inductor;
The switch that will be positioned at this center switch one side triggers its corresponding inductor under the initial conditions of not placing file; And
The switch that will be positioned at this center switch opposite side does not trigger its corresponding inductor under the initial conditions of not placing file.
10. a document size detection method is characterized in that, comprises the following steps:
One first optical flame detector is set in a sheet holding member;
One first switch, a second switch and one the 3rd switch sequentially are set on this sheet holding member;
Make this first switch cover this this first optical flame detector, and make the 3rd switch leave this first optical flame detector;
When the file of different size is positioned over this sheet holding member, described the first switch and the 3rd switch are activated by file, and then trigger this first optical flame detector, and this second switch is activated and triggers by file, and then described the first optical flame detector and second switch are triggered and can produce altogether maximum four kinds of accurate position signals to detect the file of maximum four kinds of sizes afterwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101287758A CN103376057A (en) | 2012-04-20 | 2012-04-20 | File size detection device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101287758A CN103376057A (en) | 2012-04-20 | 2012-04-20 | File size detection device and method |
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|---|---|
| CN103376057A true CN103376057A (en) | 2013-10-30 |
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| CN2012101287758A Pending CN103376057A (en) | 2012-04-20 | 2012-04-20 | File size detection device and method |
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|---|---|---|---|---|
| JPH0820526B2 (en) * | 1989-08-24 | 1996-03-04 | 沖電気工業株式会社 | Medium detection device |
| TWI262854B (en) * | 2005-11-11 | 2006-10-01 | Benq Corp | Media feeding device capable of detecting size of fed printed media |
| US20070070118A1 (en) * | 2005-09-26 | 2007-03-29 | Seiko Epson Corporation | Position detecting device, liquid ejecting apparatus and method of detecting smear of scale |
| CN101162140A (en) * | 2006-10-13 | 2008-04-16 | 虹光精密工业（苏州）有限公司 | Paper size feeler mechanism for image scanner |
| JP2012051374A (en) * | 2011-09-05 | 2012-03-15 | Seiko Epson Corp | Position detection device, rotary scale, and liquid discharging apparatus with position detection device |
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2012
- 2012-04-20 CN CN2012101287758A patent/CN103376057A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0820526B2 (en) * | 1989-08-24 | 1996-03-04 | 沖電気工業株式会社 | Medium detection device |
| US20070070118A1 (en) * | 2005-09-26 | 2007-03-29 | Seiko Epson Corporation | Position detecting device, liquid ejecting apparatus and method of detecting smear of scale |
| TWI262854B (en) * | 2005-11-11 | 2006-10-01 | Benq Corp | Media feeding device capable of detecting size of fed printed media |
| CN101162140A (en) * | 2006-10-13 | 2008-04-16 | 虹光精密工业（苏州）有限公司 | Paper size feeler mechanism for image scanner |
| JP2012051374A (en) * | 2011-09-05 | 2012-03-15 | Seiko Epson Corp | Position detection device, rotary scale, and liquid discharging apparatus with position detection device |
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Application publication date: 20131030 |