CN1837783A - Detection device for adhesion amount of color toner - Google Patents
Detection device for adhesion amount of color toner Download PDFInfo
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- CN1837783A CN1837783A CN 200610000370 CN200610000370A CN1837783A CN 1837783 A CN1837783 A CN 1837783A CN 200610000370 CN200610000370 CN 200610000370 CN 200610000370 A CN200610000370 A CN 200610000370A CN 1837783 A CN1837783 A CN 1837783A
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Abstract
The objective of the invention is to provide a simply, inexpensively and compactly configured device for measuring the adhesion amount of color toner having a monitor function by simple configurations. This color toner adhesive amount measuring device 10 comprises a frame member 11 made of resin equipped with four recessed sections opened to an upper direction, a pair of conductor parts 13 and 14 exposed so as to be made adjacent to each other on the bottom face of each recessed section of the frame member, one chip-shaped light emitting element 15 and three chip-shaped light receiving elements 16, 17 and 18 mounted at the chip mounting part of one conductor part 13 in each recessed section, and electrically connected to the other conductor part and one cover 12 covering the frame member. The cover is provided with a window part having polarizing films 19a, 19b and 19c corresponding to the light emitting element and the first and second light receiving elements and a reflecting surface 12a' for reflecting the rays of light from the light emitting element to the third light receiving element.
Description
Technical field
The present invention relates to be used for to measure the detection device for adhesion amount of color toner of adhesion amount of the color toner (color toner) of transfer printing type color printer, colour facsimile device etc.
Background technology
In the past, this detection device for adhesion amount of color toner was for example by formation shown in Figure 4.
That is, in Fig. 4, detection device for adhesion amount of color toner 1 is by constituting with the lower part: as the LED (light emitting diode) 2 of illuminating part; Be configured in first optical splitter (beam splitter) 3 in the luminous light path of LED 2; First photodiode 4 and second photodiode 5 as light accepting part; Be configured in second optical splitter 6 in the light-receiving optical path of these photodiodes 4,5.
And detection device for adhesion amount of color toner 1 integral body is configured in light source (lamp house) 1a, and is installed in as shown in Figure 5 on the substrate 7.
Above-mentioned LED 2 is to detection bodies 8 irradiates lights such as for example photosensitive drums that will measure the color toner adhesion amount.
Above-mentioned first optical splitter 3 is polarised light splitters of known configurations, is configured in the luminous light path from LED 2, sees through thereby make from only first polarized light, for example P polarized light in the light of LED 2.
Above-mentioned first photodiode 4 and second photodiode 5 all are for example PIN photodiode of known configurations.
Above-mentioned second optical splitter 6 is polarised light splitters of known configurations, constitute make first polarized light for example the P polarized light see through, and make for example S polarized light reflection of second polarized light.
In addition, above-mentioned detection device for adhesion amount of color toner 1 has the 3rd photodiode 9 that monitors usefulness.
The 3rd photodiode 9 as shown in Figure 6, compare with described two photodiodes 4,5 constitute small-sized, be installed on the surface of substrate 7, and seal, and inject the light that penetrates to the side from above-mentioned LED 2 by the window portion A that is located among substrate 7 and the light source 1a by sealing resin 9a.
According to the detection device for adhesion amount of color toner 1 of this structure,, utilize first optical splitter, the 3 feasible only P polarizing light irradiation detection bodies 8 from the light that LED 2 penetrates by driving LED 2.
And when the reflected light from detection bodies 8 incided on second optical splitter 6, the P polarized light saw through second optical splitter 6 and incides on first photodiode 4, and the S polarized light is by 6 reflections of second optical splitter and be incident on second photodiode 5.
Here, be incident on the surface reflection of the detected body 8 of a part of the P polarized light on the detection bodies 8,, and see through second optical splitter 6 and be incident on first photodiode 4 directly as P polarized light directive second optical splitter 6.
Relative therewith, for the light on the toner that is attached to detection bodies 8 surfaces of being incident in the P polarized light that will be incident on the detection bodies 8, because this toner is a dielectric, so the light that is reflected by this toner comprises that the composition beyond the P polarized light component is the S composition.
Therefore, have only this S polarized light by the reflection of second optical splitter 6 and be incident on second photodiode 5, and the P polarized light sees through second optical splitter 6 and is incident on first photodiode 4.
Thus, be incident on the light quantity and the ratio that is incident on the light quantity of the P polarized light on first photodiode 4 of the S polarized light on second photodiode 5 by calculating, because the toner adhesion amount on the photosensitive drum surface of detection bodies 8 this ratio more for a long time becomes big, so can measure the color toner adhesion amount.
In addition, generally when temperature changed along with driving, its luminescence efficiency changed LED 2, and was incident on the 3rd photodiode 9 that monitors usefulness to the part of the light of side ejaculation from LED 2, thereby monitored the light quantity of LED 2.Thus, the driving circuit of LED 2 (not shown) carries out drive controlling so that the light quantity of LED 2 is constant.Thus, the light quantity of LED 2 can always keep constant.
In addition, patent documentation 1 discloses a kind of toner detection device for adhesion amount, and it makes from the reflected light of detection bodies and is accepted as S polarized light and P polarized light by photo detector by polarized light filter respectively.
In addition, patent documentation 2 discloses a kind of detection device for adhesion amount of color toner, and it will be cut apart from the part of the light of light source, and utilize monitor unit to measure light quantity, thereby control the drive condition of light source, make the light quantity of light source constant.
[patent documentation 1] Japanese patent laid-open 06-250480 number
[patent documentation 2] Jap.P. spy opens 2000-029271 number
Yet above-mentioned detection device for adhesion amount of color toner 1 comprises the 3rd photodiode 9 that monitors usefulness, need more parts be installed respectively to substrate 7.
At this moment, LED 2 and each photodiode 4,5,9 are arranged in the light source 1a after forming conductor terminal, are installed on the substrate 7 by solder.
For this reason, number of components increases, and except the dimensional discrepancy of each parts, also because to the deviation of the installation accuracy of substrate 7, make the mensuration precision of detection device for adhesion amount of color toner 1 produce deviation, and component costs and assembly cost rising, it is relatively large that light source 1a also becomes.
In addition, for monitoring with the 3rd photodiode 9, in order to get rid of the influence of external disturbance, need utilize sealing resin 9a sealing after being installed on the substrate 7, cause process number to increase, manufacturing cost raises.
Relative therewith, in the toner detection device for adhesion amount 1 of above-mentioned patent documentation 1, do not constitute the light quantity that monitors light source especially and control this light quantity.
In addition, in the detection device for adhesion amount of color toner 1 of above-mentioned patent documentation 2, though constitute the light quantity that monitors light source, but owing to utilize the part that the light cutting unit is cut apart from the light of light source to monitor, be used to monitor so should shine the part of the light on the detection bodies (photoreceptor), cause the light quantity of irradiating and detecting body to reduce.
Summary of the invention
The present invention is exactly In view of the foregoing and proposes, and its purpose is to provide a kind of detection device for adhesion amount of color toner, and it can utilize simple structure, low cost and small-sized constitute, and has function for monitoring.
According to the present invention, above-mentioned purpose reaches by a kind of detection device for adhesion amount of color toner, and this detection device for adhesion amount of color toner is characterised in that, comprising: resin system frame parts, and it has the depressed part that four tops are opened wide; In the pair of conductors portion that the bottom surface of each depressed part of said frame parts all is provided with, described pair of conductors portion adjoins each other and exposes; A light-emitting component and three photo detectors, it lays respectively in above-mentioned each depressed part, is installed on the element installation portion of one of them conductor portion and with another conductor portion to be electrically connected; And the lid that is coated over the one on the said frame parts, above-mentioned lid has corresponding to above-mentioned light-emitting component and first and second photo detectors and is provided with the window portion of polarized light film, and above-mentioned lid is provided with the reflection of light face of the 3rd photo detector reflection from above-mentioned light-emitting component that make, be mapped on the detected object that to measure the toner adhesion amount from of the illumination of above-mentioned light-emitting component by the polarized light film of above-mentioned lid, the surface of this detected object or the reflected light of toner that is attached to the surface are via the polarized light film that kind polarized light inequality is seen through, accepted by first and second photo detectors, measure the lip-deep toner adhesion amount of above-mentioned detected object according to its light quantity difference.
Detection device for adhesion amount of color toner of the present invention is preferably, and above-mentioned the 3rd photo detector is installed in and is equipped with in the depressed part of a side adjacency of depressed part of light-emitting component.
Detection device for adhesion amount of color toner of the present invention is preferably, and above-mentioned first and second photo detectors are installed in respectively and are equipped with in the depressed part arranged side by side of opposite side adjacency of depressed part of light-emitting component.
Detection device for adhesion amount of color toner of the present invention is preferably, and above-mentioned lid has lens section respectively in each window portion.
Detection device for adhesion amount of color toner of the present invention is preferably, and the said frame parts have the depressed part that is arranged in row, and each that expose in each depressed part is outstanding side by side with as conductor terminal from the lateral edges of said frame parts respectively to conductor portion.
Detection device for adhesion amount of color toner of the present invention is preferably, and above-mentioned lid and said frame parts are one, thereby integral body constitutes a packaging body.
According to said structure, become the polarized light of first kind by the polarized light film on the window portion that is installed in lid from the light of light-emitting component ejaculation, in the time of on shining detected object, be incident on first and second photo detectors by polarized light film respectively from the reflected light of detected object.
Thus, first and second photo detectors are accepted from the mutually different polarized light of the kind in the reflected light of detected object by polarized light film respectively, and detect its light quantity.
At this moment, since the dielectric on the surface by being attached to detected object is the reflection of toner produce with to the diverse polarized light of the irradiates light of detected object, so the light quantity according to these polarized lights is poor, can measure the lip-deep toner adhesion amount of above-mentioned detected object.
And, come the light of self-emission device to be located at the reflecting surface reflection of lid, and be directed on the 3rd photo detector, thereby can utilize the 3rd photo detector to detect the amount of emitted light of light-emitting component, so come the drive controlling light-emitting component by amount of emitted light according to this light-emitting component, even the temperature of light-emitting component rises, luminescence efficiency reduces, also can make the amount of emitted light of light-emitting component keep constant.
In addition, light-emitting component and each photo detector constitute chip part respectively, and be installed on the conductive part that in each depressed part of single frame parts, exposes by tube core welding (die bonding) and wire-bonded (wire bonding), and owing to do not use existing such relatively large polarised light splitter, so can realize small-scale structure on the whole, and can improve the installation accuracy of each parts with less process number, can reduce deviation significantly to frame parts.
Under the situation in above-mentioned the 3rd photo detector is installed in and is equipped with the depressed part of a side adjacency of depressed part of light-emitting component, can be easily in the future the light of self-emission device be directed on the 3rd photo detector.
Under the situation in above-mentioned first and second photo detectors are installed in and are equipped with the depressed part arranged side by side of opposite side adjacency of depressed part of light-emitting component respectively, come the light detected object reflection of self-emission device, can easily be directed on first and second photo detectors equally.
Have under the situation of lens section respectively in each window portion at above-mentioned lid, the light that shines the light of detected object and detected object reflection and be directed into first and second photo detectors from light-emitting component is respectively by lens section optically focused, thereby can more effectively detect these polarized lights.
The said frame parts have the depressed part that is arranged in row, in each depressed part, expose each to conductor portion respectively from the lateral edges of said frame parts outstanding side by side with situation as conductor terminal under, these conductor terminals are directly connected on the installation base plate, and detection device for adhesion amount of color toner can easily be installed.
Thereby making above-mentioned lid and said frame parts is that one constitutes under the situation of a packaging body integral body, can further realize miniaturization, and operation easily.
Like this, according to the present invention,, light-emitting component and 3 photo detectors as chip part are installed respectively in each depressed part in being located at frame parts by using single frame parts, thus as a whole can be with simple structure and low cost, small-sized and deviation is little, constitute accurately.
Description of drawings
Fig. 1 is the concise and to the point sectional view of structure of an embodiment of expression detection device for adhesion amount of color toner of the present invention.
Fig. 2 is the concise and to the point stereographic map that the detection device for adhesion amount of color toner of presentation graphs 1 takes off the state behind the lid.
Fig. 3 is the concise and to the point stereographic map of expression state that the detection device for adhesion amount of color toner of Fig. 1 is installed on installation base plate.
Fig. 4 is the concise and to the point sectional view of structure of an example of the existing detection device for adhesion amount of color toner of expression.
Fig. 5 is the concise and to the point stereographic map of expression state that the detection device for adhesion amount of color toner of Fig. 4 is installed on installation base plate.
Fig. 6 is the longitudinal diagram of the detection device for adhesion amount of color toner of Fig. 4.
Symbol description
10: detection device for adhesion amount of color toner; 11: frame parts; 12: lid; 13a, 13b, 13c, 13d: conductor portion; 14a, 14b, 14c, 14d: conductor portion; 15:LED (chip part); 16,17,18: photodiode (chip part); 19a, 19b, 19c: polarized light film; 20: detection bodies; 21: substrate.
Embodiment
Below, describe preferred implementation of the present invention in detail with reference to Fig. 1～Fig. 3.
In addition, because the embodiment of following narration is a preferred concrete example of the present invention, thus carried out various preferred qualifications technically, but short of in the following description special qualification record of the present invention, scope then of the present invention is not limited to these modes.
[embodiment 1]
Fig. 1 shows the structure of an embodiment of detection device for adhesion amount of color toner of the present invention.
In Fig. 1, detection device for adhesion amount of color toner 10 comprises frame parts 11 and lid 12.
Said frame parts 11 form resinous flat rectangular-shaped, have 4 depressed part 11a, the 11b, 11c, the 11d that are arranged in row.
In each depressed part 11a, 11b, 11c, 11d, as shown in Figure 2, the 13a of pair of conductive portion, 14a are arranged respectively, 13b, 14b, 13c, 14c are mutually opposed with 13d, 14d and expose in its bottom surface.
These conductive parts 13a, 14a, 13b, 14b, 13c, 14c and 13d, 14d form as one with frame parts 11 by for example embedding shaping, and the other end is the outstanding conductor terminal that forms from the side of a side of said frame parts 11.
Herein, as depicted in figs. 1 and 2, in the 2nd depressed part 11b, be welded on the chip installation portion of conductive part 13b by tube core as the LED 15 of the shaped like chips of light-emitting component, and be utilized wire-bonded such as gold thread to the conductive part 14b of adjacency.
And, in the 3rd and the 4th depressed part 11c, 11d, shaped like chips photodiode 16,17 as the 1st and the 2nd photo detector is welded on the chip installation portion of conductive part 13c, 13d by tube core respectively, and is utilized wire-bonded such as gold thread on conductive part 14c, the 14d of adjacency.
To this, in the 1st depressed part 11a, be welded on the chip installation portion of conductive part 13a by tube core as the photodiode 18 of the shaped like chips of the 3rd photo detector, and be utilized wire-bonded such as gold thread to the conductive part 14a of adjacency.
And, above-mentioned lid 12 is made of resin equally with said frame parts 11, form the entire upper surface that covers said frame parts 11, and have be installed in said frame parts 11 on corresponding notch 12a, 12b, the 12c of LED 15, photodiode 16,17.
Separated so that light does not leak by spaced walls mutually for these notchs 12a, 12b, 12c, and has the window portion that the upper end is opened wide.
And, have polarized light film 19a, 19b, 19c respectively to seal these window portion in the window portion of these notchs 12a, 12b, 12c.
Herein, the first polarized light film 19a and the 3rd polarized light film 19c are the P polarized light films that the P polarized light is seen through, the S polarized light film that the second polarized light film 19b sees through the S polarized light.
In addition, the LED 15 in above-mentioned notch 12a and the depressed part 11b that is installed in said frame parts 11 is mutually opposed, and underside area extends to the top of the 3rd photodiode 18 of adjacency, and the lower surface of this prolongation forms reflecting surface 12a '.
Thus, the light L1 that penetrates from above-mentioned LED 15 advances in notch 12a towards the top, and the polarized light film 19a of penetrating window oral area is to detection bodies 20 irradiations that will measure the color toner adhesion amount, and the light L2 in tiltedly side ejaculation is reflected by above-mentioned reflecting surface 12a ', and is directed on the 3rd photodiode 18.
To this, above-mentioned notch 12b, 12c respectively with the depressed part 11c, the 11d that are installed in said frame parts 11 in photodiode 16,17 mutually opposed.
In addition, above-mentioned notch 12b, 12c form the inclination of the left and right directions in Fig. 1 sideling, make the light of detected body 20 reflections be directed on the photodiode 16,17 by polarized light film 19b, the 19c of window portion respectively.
The detection device for adhesion amount of color toner 10 of embodiment of the present invention forms said structure, in use as shown in Figure 3, is installed on the substrate of being located in the various device with the detection bodies 20 that will measure the color toner adhesion amount 21.
By driving LED 15, make LED 15 luminous herein.Thus, the light L1 that penetrates upward from LED 15 passes through the first polarized light film 19a, has only the P polarizing light irradiation on detection bodies 20.
And, incide on the second and the 3rd polarized light film 19b, the 19c from the reflected light of detection bodies 20.Thus, the S polarized light that sees through the second polarized light film 19b incides on first photodiode 16, and incides on second photodiode 17 through the P polarized light of the 3rd polarized light film 19c.
Herein, incide the photosensitive drum surface reflection of the detected body 20 of a part of the P polarized light on the detection bodies 20, and directly incide on second photodiode 17 through the 3rd polarized light film 19c as the P polarized light.
To this, for the light on the toner that incides the photosensitive drum surface that is attached to detection bodies 20 in the P polarized light that will incide on the detection bodies 20, because this toner is a dielectric, so the light that is reflected by this toner comprises that the composition beyond the P polarized light component is the S composition.
Therefore, have only this S polarized light to see through the second polarized light film 19b and be incident on first photodiode 16, and the P polarized light sees through the 3rd polarized light film 19c and is incident on second photodiode 17.
Thus, be incident on the light quantity and the ratio that is incident on the light quantity of the P polarized light on second photodiode 17 of the S polarized light on first photodiode 16 by calculating, can measure the color toner adhesion amount of the photosensitive drum surface of detection bodies 20.
In addition, the light L2 that penetrates to the side from the LED 15 face 12a ' reflection that is reflected, and inciding on the 3rd photodiode 18 that monitors usefulness, thus can monitor the light quantity of LED 15.And, according to the light quantity that is monitored by the 3rd photodiode 18, by not shown driving circuit drive controlling LED 15, so that amount of emitted light is constant.
Therefore, even LED 15 makes the luminescence efficiency change owing to be accompanied by the temperature variation of driving, also can monitor the light quantity of LED 15, and carry out drive controlling and make that its amount of emitted light is constant, proofread and correct thus because said temperature changes the change of the luminescence efficiency that causes.Thus, always can carry out the mensuration of correct color toner adhesion amount.
And, LED 15 and each photodiode the 16,17, the 18th, chip part, be installed on the chip installation portion of each conductor portion 13a, 13b, 13c, 13d of frame parts 11, thus the deviation when each parts is installed reduce, thereby can reduce as a whole deviation significantly.
In addition, the 3rd photodiode 18 that monitors usefulness is installed in the frame parts 11 equally with LED 15 and other photodiode 16,17, can constitute a packaging body on the whole, so also can reduce the assembling deviation, cut down process number, realize miniaturization structure on the whole.
And, separate for the reflected light from detection bodies being carried out polarized light, do not use existing polarised light splitter, and use polarized light film, so can form the structure of small-sized and light weight on the whole.
In the above-described embodiment, illustrated that detection bodies 20 for example is the situation of the photosensitive drums of color printer etc., but be not limited thereto, other color toner is adhered to carry out in the various image processing systems that image forms, can certainly use the present invention.
Like this, according to the present invention, can provide a kind of detection device for adhesion amount of color toner, it utilizes simple structure, low cost and small-sized constitutes, and has function for monitoring.
Claims (6)
1. a detection device for adhesion amount of color toner is characterized in that, comprising:
Resin system frame parts, it has the depressed part that four tops are opened wide;
In the pair of conductors portion that the bottom surface of each depressed part of said frame parts all is provided with, described pair of conductors portion adjoins each other and exposes;
A light-emitting component and three photo detectors, it lays respectively in above-mentioned each depressed part, is installed on the element installation portion of one of them conductor portion and with another conductor portion to be electrically connected; And
Be coated over the lid of the one on the said frame parts,
Above-mentioned lid has the window portion that is provided with polarized light film corresponding to above-mentioned light-emitting component and first and second photo detectors, and above-mentioned lid is provided with the reflection of light face of the 3rd photo detector reflection from above-mentioned light-emitting component that make,
Be mapped on the detected object that to measure the toner adhesion amount from of the illumination of above-mentioned light-emitting component by the polarized light film of above-mentioned lid, the surface of this detected object or the reflected light of toner that is attached to the surface are via the polarized light film that kind polarized light inequality is seen through, accepted by first and second photo detectors, measure the lip-deep toner adhesion amount of above-mentioned detected object according to its light quantity difference.
2. detection device for adhesion amount of color toner according to claim 1 is characterized in that, above-mentioned the 3rd photo detector is installed in and is equipped with in the depressed part of a side adjacency of depressed part of light-emitting component.
3. detection device for adhesion amount of color toner according to claim 2 is characterized in that, above-mentioned first and second photo detectors are installed in respectively and are equipped with in the depressed part arranged side by side of opposite side adjacency of depressed part of light-emitting component.
4. according to each described detection device for adhesion amount of color toner in the claim 1～3, it is characterized in that above-mentioned lid has lens section respectively in each window portion.
5. according to each described detection device for adhesion amount of color toner in the claim 1～4, it is characterized in that, the said frame parts have the depressed part that is arranged in row, and each that expose in each depressed part is outstanding side by side with as conductor terminal from the lateral edges of said frame parts respectively to conductor portion.
6. according to each described detection device for adhesion amount of color toner in the claim 1～5, it is characterized in that above-mentioned lid and said frame parts are one, thereby integral body constitutes a packaging body.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005080832A JP4616676B2 (en) | 2005-03-22 | 2005-03-22 | Color toner adhesion measuring device |
| JPJP2005080832 | 2005-03-22 | ||
| JP2005080832 | 2005-03-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1837783A true CN1837783A (en) | 2006-09-27 |
| CN100561185C CN100561185C (en) | 2009-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100003700A Active CN100561185C (en) | 2005-03-22 | 2006-01-06 | Detection device for adhesion amount of color toner |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4616676B2 (en) |
| CN (1) | CN100561185C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103257543A (en) * | 2012-02-17 | 2013-08-21 | 株式会社理光 | Optical sensor and image forming apparatus |
| CN103309194A (en) * | 2012-03-08 | 2013-09-18 | 株式会社理光 | Optical sensor and image forming device |
| CN107367328A (en) * | 2016-05-11 | 2017-11-21 | 原相科技股份有限公司 | Light arrangement for detecting with exhaust decompression function |
| JP2018137340A (en) * | 2017-02-22 | 2018-08-30 | ニチコン株式会社 | Toner adhesion amount sensor and manufacturing method thereof |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5254833B2 (en) * | 2009-02-06 | 2013-08-07 | スタンレー電気株式会社 | Optical sensor |
| JP2019024033A (en) * | 2017-07-24 | 2019-02-14 | 京セラ株式会社 | Package for optical sensor, and optical sensor device |
| JP2024030358A (en) * | 2022-08-24 | 2024-03-07 | スタンレー電気株式会社 | Optical sensor and its manufacturing method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000029271A (en) * | 1998-07-10 | 2000-01-28 | Stanley Electric Co Ltd | Color toner sticking quantity measuring device |
| JP4860845B2 (en) * | 2001-08-28 | 2012-01-25 | キヤノン株式会社 | Image forming apparatus |
| JP2004317931A (en) * | 2003-04-18 | 2004-11-11 | Minolta Co Ltd | Image forming apparatus |
-
2005
- 2005-03-22 JP JP2005080832A patent/JP4616676B2/en active Active
-
2006
- 2006-01-06 CN CNB2006100003700A patent/CN100561185C/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103257543A (en) * | 2012-02-17 | 2013-08-21 | 株式会社理光 | Optical sensor and image forming apparatus |
| CN103257543B (en) * | 2012-02-17 | 2016-05-04 | 株式会社理光 | Optical pickocff and image processing system |
| CN103309194A (en) * | 2012-03-08 | 2013-09-18 | 株式会社理光 | Optical sensor and image forming device |
| CN103309194B (en) * | 2012-03-08 | 2016-08-10 | 株式会社理光 | Optical pickocff and image processing system |
| CN107367328A (en) * | 2016-05-11 | 2017-11-21 | 原相科技股份有限公司 | Light arrangement for detecting with exhaust decompression function |
| JP2018137340A (en) * | 2017-02-22 | 2018-08-30 | ニチコン株式会社 | Toner adhesion amount sensor and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4616676B2 (en) | 2011-01-19 |
| CN100561185C (en) | 2009-11-18 |
| JP2006267139A (en) | 2006-10-05 |
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