CN1155205A - Method for open-close of picture reading equipment and detecting element feed unit - Google Patents
Method for open-close of picture reading equipment and detecting element feed unit Download PDFInfo
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- CN1155205A CN1155205A CN 96111138 CN96111138A CN1155205A CN 1155205 A CN1155205 A CN 1155205A CN 96111138 CN96111138 CN 96111138 CN 96111138 A CN96111138 A CN 96111138A CN 1155205 A CN1155205 A CN 1155205A
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Abstract
An image reading apparatus suitable for use as a facsimile apparatus, a coping apparatus or the like, and a method for detecting open/close of an original feeding unit in the image reading apparatus. The image reading apparatus has an original feeding unit openable and closable for feeding an original set, a light radiating unit for radiating lights on the original fed, an image sensor disposed on a feeding route for detecting an image of the original on the basis of reflected light from the original, a binary information converting unit for converting detecting image information from the image sensor into binary information, and a data processing unit using the binary information from the binary information converting unit as read image information on the occasion of image reading, while using it as information used to detect an open/close state of the original feeding unit on the occasion excepting the image reading, thereby detecting an open/close state of the original feeding unit.
Description
The present invention relates to the method for the On/Off state of a kind of picture reading apparatus that is suitable for use as facsimile equipment, copying equipment or similar devices and a kind of original paper feed unit that is used for detecting picture reading apparatus.
In recent years, be used to read the picture reading apparatus of the information on the original paper that is made in as pictorial information, such as facsimile machine, image scanner or similar devices, developed.
In these picture reading apparatus, the original paper that for example is arranged in the storage compartment is extracted out one by one and is presented on feed path, so the pictorial information of original paper is read on feed path.
If on above-mentioned feed path so-called obstruction taking place is that original paper is stuck or similar phenomenon, the operator can open the original paper feed unit that is configured for presenting original paper can opening and closing capping unit, eliminate the original paper that on feed path, takes place thus and block.
In above-mentioned picture reading apparatus, rayed is on the original paper of presenting on the feed path, to read pictorial information according to the reverberation that comes from original paper.Therefore, in the image reading operating process, must shield the stray light that comes from the outside.Above-mentioned capping unit also needs to close, because if capping unit is in opening, stray light can hinder the reasonable reading of the pictorial information of original paper.
For preventing that capping unit is in opening in above-mentioned image reading operating process, common picture reading apparatus is provided with the micro switch of a special use, is used to detect the On/Off state of capping unit, so that with On/Off state notifying operator.
But, this common picture reading apparatus has such problem, be that number of components has increased, constitute the non-essential structure complicated that expends or make equipment of this equipment, because equipment has the special-purpose micro switch of the On/Off state that is used to detect capping unit thereby caused increasing.
For overcoming the problems referred to above, the objective of the invention is to provide the method for the On/Off state of a kind of picture reading apparatus and a kind of original paper feed unit that is used for detecting this picture reading apparatus, the invention enables the On/Off state that can under the situation of the quantity of the parts that do not increase this equipment, detect the original paper feed unit.
The invention provides a kind of picture reading apparatus, it comprises: one can opening and closing the original paper feed unit, be used to present an original paper group; A luminescence unit (light radiating unit) is used for the original paper that illumination is presented by the original paper feed unit; An image sensor, it is arranged on the feed path of original paper feed unit, is used for detecting according to the reverberation that comes from original paper the image of original paper; A binary message converting unit, the detection pictorial information that is used for coming from image sensor is converted to binary message; With a data processing unit, when image reading, it adopts the binary message that comes from the binary message converting unit as reading pictorial information, and under the situation except that image reading, it adopts the information of this binary message as the On/Off state that detects the original paper feed unit.
The present invention also provides a kind of method of On/Off state of the original paper feed unit that is used for detecting picture reading apparatus, and this picture reading apparatus comprises: the original paper feed unit, and it can opening and closing, are used to present an original paper group; A luminescence unit is used for the original paper that illumination is presented by the original paper feed unit; An image sensor, it is arranged on the feed path of original paper feed unit, is used for detecting according to the reverberation that comes from original paper the image of original paper; A binary message converting unit, the detection pictorial information that is used for coming from image sensor is converted to binary message; With an original paper back support unit, it is arranged on the position crossing over feed path, original paper back support unit can reflex to image sensor with the light that comes from luminescence unit on this position, this method may further comprise the steps: when image reading, adopt according to the amplitude of the detection pictorial information that comes from image sensor and be arranged on clip level in the binary message converting unit as reading pictorial information; And under the situation except that image reading, the detection pictorial information that will obtain when luminescence unit is worked is compared with the clip level in the described binary message converting unit, if detect pictorial information less than or be lower than clip level, then can detect the original paper feed unit and be in opening, if be higher than or greater than clip level and detect pictorial information, will detect the original paper feed unit and be in closed condition.
The present invention also provides a kind of method of On/Off state of the original paper feed unit that is used for detecting picture reading apparatus, and this picture reading apparatus comprises: the original paper feed unit, and it can opening and closing, are used to present an original paper group; A luminescence unit is used for the original paper that illumination is presented by the original paper feed unit; An image sensor, it is arranged on the feed path of original paper feed unit, is used for detecting according to the reverberation that comes from original paper the image of original paper; A binary message converting unit, the detection pictorial information that is used for coming from image sensor is converted to binary message; With an original paper back support unit, it is arranged on the position crossing over feed path, original paper back support unit can reflex to image sensor with the light that comes from luminescence unit on this position, this method may further comprise the steps: when image reading, adopt according to the amplitude of the detection pictorial information that comes from image sensor and be arranged on clip level in the binary message converting unit as reading pictorial information; And under the situation except that image reading, the detection pictorial information that will obtain when luminescence unit is not worked is compared with the clip level in the binary message converting unit, if detect pictorial information greater than or be higher than clip level, then can detect the original paper feed unit and be in opening, if and the detection pictorial information is lower than or less than clip level, will detects the original paper feed unit and be in closed condition.
The present invention also provides a kind of method of On/Off state of the original paper feed unit that is used for detecting picture reading apparatus, and this picture reading apparatus comprises: the original paper feed unit, and it can opening and closing, are used to present an original paper group; A luminescence unit is used for the original paper that illumination is presented by the original paper feed unit; An image sensor, it is arranged on the feed path of original paper feed unit, is used for detecting according to the reverberation that comes from original paper the image of original paper; A binary message converting unit, the detection pictorial information that is used for coming from image sensor is converted to binary message, the binary message that wherein comes from the binary message converting unit is used as the reading pictorial information when image reading, this method may further comprise the steps: the peak value of the detection pictorial information of the image sensor that will obtain when luminescence unit is luminous is stored in the binary message converting unit; Peak information is compared with the detection pictorial information of the image sensor that obtains when luminescence unit is not luminous; Approximate peak information if detect pictorial information, then can detect the original paper feed unit and be in opening, if and the detection pictorial information is less than peak information, according to the comparative result of binary message converting unit under the situation except that image reading, will detect the original paper feed unit and be in closed condition.
According to the present invention, data processing unit adopts the detection pictorial information that comes from image sensor, when image reading, produces and reads pictorial information.Under the situation except that image reading, the data processing unit employing comes from the information of the binary message of binary message converting unit as the On/Off state that detects the original paper feed unit.Therefore, it is possible only adopting the existing On/Off state that is used for the electric circuit inspection original paper feed unit of image processing, has suppressed to constitute the required inessential increase that expends of this equipment, and can easily realize the hardware configuration of this equipment.
Brief description of drawings
Fig. 1 is the block diagram that shows one aspect of the present invention;
Fig. 2,4 and 5 is the schematic perspective views according to the picture reading apparatus of the first embodiment of the present invention;
Fig. 3 is the cutaway view according to the vertical direction of the picture reading apparatus of the first embodiment of the present invention;
Fig. 6 is the block diagram according to the major part of the picture reading apparatus of the first embodiment of the present invention;
Fig. 7 is a flow chart, is used to describe the operation principle according to the picture reading apparatus of the first embodiment of the present invention;
Fig. 8 be according to of the present invention be the block diagram of major part of the picture reading apparatus of second embodiment;
Fig. 9 is a flow chart, is used to describe the operation principle of picture reading apparatus according to a second embodiment of the present invention;
Figure 10 is the block diagram of major part of a kind of distortion of picture reading apparatus according to a second embodiment of the present invention;
Figure 11 is the block diagram of major part of the picture reading apparatus of a third embodiment in accordance with the invention;
Figure 12 is a flow chart, is used to describe the operation principle of the picture reading apparatus of a third embodiment in accordance with the invention;
Figure 13 is the block diagram of major part of the picture reading apparatus of a fourth embodiment in accordance with the invention;
Figure 14 is a flow chart, is used to describe the operation principle of the picture reading apparatus of a fourth embodiment in accordance with the invention;
The explanation of preferred embodiment
(a) explanation of design of the present invention
Set forth design of the present invention referring now to accompanying drawing.
Fig. 1 is the block diagram that shows principle of the present invention.In Fig. 1, reference number 1 expression original paper feed unit, it can opening and closing, so that present 2 groups of original papers (original).Reference number 3 is a luminescence unit, is used for the original paper 2 that illumination is presented by original paper feed unit 1.Image sensor of reference number 4 expressions, it is arranged on the feed path of original paper feed unit 1, is used for according to the image that detects original paper 2 from the reverberation of original paper 2.
Binary message converting unit 5 has a clip level that is used to be provided with clip level unit and a comparing unit is set, this comparing unit is used for the pictorial information that comparison is provided with the clip level of unit setting by clip level and comes from the detection of image sensor 4, the result who compares from comparing unit output with binary message thus.
In these cases, clip level is provided with the unit can have a register, and clip level sets in advance in this register.In addition, clip level is provided with the unit can have a peak value preservation unit and a partial pressure unit, the former is used to preserve the peak value from the detection information of image sensor 4 up-to-date inputs, the latter is used for that peak value is preserved the level of preserving the unit and carries out dividing potential drop, and the dividing potential drop result of partial pressure unit is set to clip level thus.
Binary message converting unit 5 can have a light application time peak value and preserve unit and a peak value comparing unit, the former is used to be kept at the peak value of the detection information of the image sensor 4 that luminescence unit 3 obtains when luminous, the latter is used for relatively being stored in that the fluorescent lifetime peak value is preserved the peak information of unit and the detection information of the image sensor 4 that obtains when luminescence unit 3 is not luminous, thereby with the comparative result of the peak value comparing unit in the binary message output binary message converting unit 5.
In addition, this picture reading apparatus can have an original paper back support unit, it is arranged in the position crossing over feed path, in this position, original paper back support unit can reflex to the light that comes from luminescence unit 3 image sensor 4, the whole surface of original paper back support unit can form such parts, that is, it can reflex to image sensor 4 with the light of luminescence unit 3 emissions.
Perhaps, this picture reading apparatus can have an original paper back support unit, it is arranged in the position crossing over feed path, in this position, original paper back support unit can reflex to the light that comes from luminescence unit 3 image sensor 4, and original paper back support unit can have a surperficial perimeter region, it can receive the light that comes from luminescence unit 3 and be formed with the parts that light can be reflexed to image sensor 4, and the zone within the perimeter region is formed with parts that light do not reflexed to image sensor 4.
Therefore, the binary message by binary message converting unit 5 is changed according to the amplitude and the set clip level of the detection pictorial information of image sensor 4 is used as the reading pictorial information in the image reading operating process.Under the situation except that image reading, detection pictorial information and clip level that binary message converting unit 5 relatively obtains when luminescence unit 3 is opened.If detect pictorial information less than or be lower than clip level, show that then original paper feed unit 1 is in opening.Be higher than or greater than clip level if detect pictorial information, show that then original paper feed unit 1 is in closed condition.
In the image reading operating process, the binary message by binary message converting unit 5 is changed according to the amplitude and the set clip level of the detection pictorial information of image sensor 4 is used as the reading pictorial information.Under the situation except that image reading, detection pictorial information and clip level that binary message converting unit 5 relatively obtains when luminescence unit 3 is closed.If detect pictorial information greater than or be higher than clip level, show that then original paper feed unit 1 is in opening.If the detection pictorial information is lower than or less than clip level, shows that then original paper feed unit 1 is in closed condition.
Binary message converting unit 5 is kept at the peak value of the detection information that luminescence unit 3 obtains from image sensor 4 when luminous, and with peak information with when luminescence unit is not luminous, compare from the detection pictorial information of image sensor 4 acquisitions.Under the situation except that image reading, approximate peak information if detect pictorial information, the comparative result of binary message converting unit 5 shows that original paper feed unit 1 is in opening.If detect pictorial information less than peak information, show that then original paper feed unit 1 is in closed condition.
According to the present invention, data processing unit adopts the detection pictorial information that comes from image sensor, when image reading, produces and reads pictorial information.Under the situation except that image reading, the binary message that comes from the binary message converting unit is used as the information of the On/Off state that detects the original paper feed unit.Therefore, it is possible only adopting the existing On/Off state that is used for the electric circuit inspection original paper feed unit of image processing, has suppressed to constitute the required inessential increase that expends of this equipment, and can easily realize the hardware configuration of this equipment.
(b) explanation of first embodiment
Fig. 2,4 and 5 is the stereograms according to the picture reading apparatus of first embodiment.Fig. 3 is the longitudinal sectional view according to the picture reading apparatus of this embodiment.Fig. 6 is a block diagram, and it illustrates the major part according to the picture reading apparatus of this embodiment.
In Fig. 2 and 3, reference number 32 expression plate rails.By by the on/off switch 31 that is pressed on these picture reading apparatus 10 outsides (not shown among Fig. 3), plate rail 32 outwards slides and pulls out as shown in Figure 4.Plate rail 32 has an original paper feed unit 11 and a paper feeding storehouse 33, and the original paper 12 with pictorial information is housed in the paper feeding storehouse.
In Fig. 3, original paper feed unit 11 is presented the original paper 12 that is located in the paper feeding storehouse 33 by feed path 11A.Along feed path 11A, be provided with ten (paper) roller (PR) 35, separate roller (SR) 36, feed roller (FR1, FR3) 37 and 39, Image Detection unit 41 and 41-1 and as feed roller (FR2) 15 and the 15-1 of original paper-back support unit.
Image Detection unit 41 is arranged on the feed path 11A of original paper feed unit 11, and it is used to detect the lip-deep image of the original paper 12 that is positioned on the feed path 11.Specifically, Image Detection unit 41 has an illumination unit (illuminating) 13 as luminescence unit, be used for the original paper 12 that illumination is presented by original paper feed unit 11, Image Detection unit 41 also has an image sensor 14, be used for detecting image according to light from original paper 12 reflections, as shown in Figure 6, this be will be described later.
Image Detection unit 41-1 also is arranged on the feed path 11A of original paper feed unit 11, and it is used to detect the image at the back side of the original paper 12 that is positioned on the feed path 11A.Specifically, Image Detection unit 41-1 has an illumination unit 13, is used for the original paper 12 that illumination is presented by original paper feed unit 11, also has an image sensor 14, be used for detecting image according to the light from original paper 12 reflections, this is identical with above-mentioned Image Detection unit 41.
Above-mentioned illumination unit 13 suitably is controlled to be On/Off according to the control model of this equipment.
Pick up the original paper 12 that roller 35 will be contained in the paper feeding storehouse 33 and pull out one by one, for example, pick up roller 35 and drop to, and an original paper 12 is pulled out in rotation against original paper 12.After this, pick up that roller 35 rises and separate (referring to the dotted line among Fig. 3) with original paper 12.By repeating this operation, original paper 12 is pulled out one by one.
Feed roller 37 produces a carrying capacity, and this power is greater than the reaction force of the friction pad load that forms separate roller 36, to guarantee to read the accuracy of presenting of initial transducer (not shown).
Feed roller 15 as original paper back support unit is white rollers, with the accuracy of presenting that guarantees that original paper 12 passes Image Detection unit 41.Feed roller 15 is arranged on the position crossing over feed path, and it can come from the light of illumination unit 13 in reflection on the direction of the image sensor 14 of Image Detection unit 41.
Feed roller 39 is last rollers of plate rail 32, if plate rail 32 outwards slides as shown in Figure 4 and pulls out, feed roller 39 discharges and has been fed to outside original paper 12.
Feed roller 15-1 as original paper back support unit is arranged on the back side of the original paper 12 on the feed path 11A and the relevant position of light-struck Image Detection unit 41-1 of illumination unit 13, it is a white roller, with the accuracy of presenting that guarantees that original paper 12 passes Image Detection unit 41-1.When original paper 12 shifted out light-struck zone of illumination unit 13, light was fed roller 15-1 reflection, and the light of back reflection enters image sensor 14.
If as shown in Figure 2, plate rail 32 is positioned within this picture reading apparatus 10, and feed roller 15-1 has the function of last roller, and the original paper of presenting from feed roller 39 12 is discharged into process subsequently in (stacked) storage compartment 40 by feed roller 15-1.
The original paper feed unit 11 of forming plate rail 32 has a capping unit 34, is used to hide feed path 11A, as shown in Figure 4.Capping unit 34 is around an axle (not shown) rotation, and this extends on the direction that plate rail 32 slides, and can be opened by hand by the operator, as shown in Figure 5.
Specifically, the operator can safeguard and check each parts on the feed path 11A by opening capping unit 34.For example, if plug paper or similar phenomenon take place on feed path 11A, the operator can manually open capping unit 34, removes the plug paper problem on feed path 11A.
In Fig. 5, a pad of reference number 38 expressions ASY.
Fig. 6 is used for being depicted in according to the mode of picture reading apparatus 10 image readings of this embodiment and detects the mode of the On/Off state of capping unit 34.
In Fig. 6, illumination unit 13 has the function as luminescence unit, is used for the original paper that illumination is presented by original paper feed unit 11, and it is made up of resistor 13a and 13b, transistor 13c, open-collector gate 13d and light-emitting diode 13e.
Amplifier of reference number 16 expressions is used to amplify the Image Detection information that comes from image sensor 14.A/D converting unit of reference number 17 expressions, the analog electrical signal as detecting pictorial information that is used for being amplified by amplifier 16 is converted to digital signal.
Amplitude comparator of reference number 18 expressions.Amplitude comparator 18 will come from the level of detection pictorial information of the digital signal of A/D converting unit 17 and compare with the clip level (B) of the digital signal that comes from the register 19 that the back will illustrate, be converted to binary message so that will come from the detection pictorial information of image sensor 14, and with binary message as a comparison the result export a MPU20 to.
Therefore, amplitude comparator 18 has the function of comparison means, is used for comparison by register 19 clip level that is provided with and the Image Detection information that comes from image sensor 14.Register 19 has the function of clip level setting device, is used for setting in advance clip level by MPU20.
That is, above-mentioned amplitude comparator 18 and register 19 constitute the binary message converting unit, and the detection pictorial information that is used for coming from image sensor 14 is converted to binary message.
The overall process of this picture reading apparatus of MPU20 centralized control, it is provided with the clip level of above-mentioned register 19.In addition, MPU20 has the function of data processing unit, when image reading, it with the binary message that comes from amplitude comparator 18 as reading pictorial information, perhaps under the situation except that image reading, it is with the information of this binary message as the On/Off state that detects original paper feed unit 11.
In other words, MPU20 produces the reading pictorial information according to the binary message that comes from amplitude comparator 18 when image reading, and under the situation except that image reading, adopt the information of this binary message as the On/Off state that detects original paper feed unit 11.
Specifically, when pressing, the operator is used to carry out the beginning knob (not shown) of image reading and when beginning the image reading operating process, a mark can be set in MPU20, finish up to this image reading operating process, be in the image reading operating process so that MPU20 can confirm this equipment.
When representing this equipment to be in mark in the image reading operating process to exist, MPU20 will come from the binary message of amplitude comparator 18 and carry out data processing as reading pictorial information.On the other hand, when this mark did not exist, MPU20 carried out data processing with this binary message as the information of the On/Off state that is used to detect original paper feed unit 11.
That is, if original paper feed unit 11 is opened, the visual field of the image sensor 14 of Image Detection unit 41 has exceeded the feed roller 15 (15-1) as original paper back support unit, and image sensor 14 does not just receive reverberation like this.Therefore image sensor 14 has obtained to be similar to the detection information of the detection information of " deceiving " data.If under the situation except that image reading, by amplitude comparator input be the detection information of " deceiving " data, MPU20 just can confirm that original paper feed unit 11 opens.
Below with reference to flowchart text employing shown in Figure 7 operation principle according to the picture reading apparatus 10 of the said structure of the first embodiment of the present invention.
Be used to carry out the beginning knob (not shown) of image reading and when beginning the image reading operating process, the mark that this equipment of expression is in the image reading operating process can be set in MPU20 when the operator presses, finish up to this image reading operating process.In this process, on capping unit 34, do not carry out On/Off detecting operation (the "Yes" path in the steps A 1).
If carry out image reading in this picture reading apparatus 10,11 of original paper feed units are presented the original paper 12 that is arranged in the paper feeding storehouse 33 one by one.Image sensor 14 receives the reflection of light light by illumination unit 13 irradiation original papers 12, and detects the analog signal of picture intelligence according to the incident light intensity output conduct of reflection.
Afterwards, the analog signal that comes from the conduct detection pictorial information of image sensor 14 is amplified by amplifier 16, and is converted to digital signal by A/D converting unit 17, further is converted to binary message by amplitude comparator 18 again.
That is, amplitude comparator 18 level (A) of detection pictorial information that will come from the digital signal of A/D converting unit 17 is compared with the clip level (B) that is provided with by register 19.If detect pictorial information greater than clip level, the locational image by illumination unit 13 irradiations that amplitude comparator 18 can detect on original paper 12 is " in vain ", and with binary message output white signal.
If Image Detection information is less than clip level, the locational image by illumination unit 13 irradiations on original paper 12 will be " deceiving ", and amplitude comparator 18 is thus with binary message output black signal.
As mentioned above, by import the binary message on the whole surface of original papers 12 from amplitude comparator 18, MPU20 can produce and confirm the reading pictorial information of original paper 12.
After this, when the image reading operating process finishes, represent this equipment to be in being marked among the MPU20 of image reading operating process and reset, so that carry out the On/Off detecting operation that capping unit 34 is an original paper feed unit 11 (the "No" path in the steps A 1) as described below.
If image sensor 14 so is provided with, promptly, when the capping unit 34 of original paper feed unit 11 is opened, for example, as shown in Figure 5, image sensor 14 faces down, and can detect the On/Off of capping unit 34 according to the binary message that obtains from amplitude comparator 18 when illumination unit 13 is worked.
That is, 13 work (steps A 3) of MPU20 control illumination unit also are provided with clip level (steps A 4) in register 19.Amplitude comparator 18 will come from the detection pictorial information of the digital signal of A/D converting unit 17 compares with the clip level that comes from register 19 (steps A 5), and output result relatively is as the On/Off information (binary message) of capping unit 34.
Specifically, if the detection pictorial information on whole surface of original paper 12 that comes from A/D converting unit 17 is less than the clip level that comes from register 19 (the "Yes" path from steps A 5 is to steps A 6), amplitude comparator 18 is in the detection information of opening with the capping unit 34 of binary message output expression formation original paper feed unit 11, perhaps, be higher than clip level (the "Yes" path from steps A 5 is to steps A 7) if detect pictorial information, amplitude comparator 18 is in the detection information of closed condition with binary message output expression capping unit 34.
In other words, if capping unit 34 is closed, original paper back support unit 15 can see from image sensor 14 that the signal as binary signal (detecting pictorial information 〉=clip level) must be a white signal like this.If capping unit 34 is opened, there is not reverberation to enter image sensor 14, the signal as binary signal (detecting pictorial information＜clip level) must be a black signal like this.
In MPU20, if white signal is imported from amplitude comparator 18 as binary signal, this binary signal will be used as the detection signal that expression original paper feed unit 11 is in closed condition.If input is black signal, this binary signal will be used as the detection signal that expression original paper feed unit 11 is in opening.
Simultaneously, if image sensor 14 so is provided with, promptly, when the capping unit 34 of original paper feed unit 11 is opened, for example, as shown in Figure 5, image sensor 14 faces up, and can detect the On/Off of capping unit 34 according to the binary message that obtains from amplitude comparator 18 when illumination unit 13 is not worked.
That is, MPU20 control illumination unit 13 makes its do not work (steps A 8), and clip level (steps A 9) also is set in register 19.Amplitude comparator 18 will come from the detection pictorial information of the digital signal of A/D converting unit 17 compares with the clip level that comes from register 19 (steps A 10), and output result relatively is as the On/Off information (binary message) of the capping unit 34 that is detected.
Specifically, be equal to, or greater than the clip level (the "Yes" path from steps A 10 is to steps A 11) that comes from register 19 if come from the detection pictorial information on whole surface of the original paper 12 of A/D converting unit 17, amplitude comparator 18 is in the detection information of opening with binary message output expression capping unit 34.Be lower than the clip level that comes from register 19 if detect pictorial information, capping unit 34 that amplitude comparator 18 constitutes original paper feed unit 11 with binary message output expression is in the detection information (from steps A 10 " deny " path is to steps A 12) of closed condition.
In other words, if capping unit 34 is closed, original paper back support unit 15 can not be seen from image sensor 14, because illumination unit 13 is idle, black signal (detecting pictorial information＜clip level) is exported as binary signal like this.If capping unit 34 is opened, white signal (detecting pictorial information 〉=clip level) will be exported as binary signal, because light enters image sensor 14 from the outside.
In MPU20, if black signal is imported from amplitude comparator 18 as binary signal, this binary signal will be used as the detection signal that expression original paper feed unit 11 is in closed condition.If input is white signal, this binary signal will be used as the detection signal that expression original paper feed unit 11 is in opening.
In picture reading apparatus 10 according to the first embodiment of the present invention, when image reading, MPU20 can adopt the binary message that comes from amplitude comparator 18 as reading pictorial information, perhaps under the situation except that image reading, with the information of this binary message as the On/Off state that detects original paper feed unit 11.Therefore, only adopt the existing number of components that is used for the circuit of image processing and does not increase equipment, the open and close state that detects original paper feed unit 11 is possible, can suppress to constitute the increase that unnecessary expend of this equipment like this, can more easily realize the hardware configuration of this equipment.
In this above-mentioned embodiment, picture reading apparatus 10 has Image Detection unit 41-1 and feed roller 15-1.But it is possible reasonably economizing and removing these parts.Under situation like this, also has above-mentioned advantage certainly.
(c) explanation of second embodiment
Fig. 8 is a block diagram, is used for being depicted in the mode of picture reading apparatus image reading according to a second embodiment of the present invention and the mode of the On/Off state that detects capping unit.Except the image reading mode with detect the mode of On/Off state of capping unit 34, has identical structure basically with above-mentioned picture reading apparatus according to first embodiment according to the picture reading apparatus 10A of this embodiment.
More particularly, the picture reading apparatus 10A according to this embodiment has with reference to the described structure of Fig. 2 to 5.In addition, among Fig. 8 identical reference symbol represent with Fig. 2 to 6 in identical or corresponding part.
Among Fig. 8, reference number 21 expression peak values are preserved circuit.This peak value is preserved circuit 21 and is had the function of peak value save set, is used to preserve the peak value from the detection information of image sensor 14 up-to-date inputs.Specifically, peak value is preserved circuit 21 is preserved analog signal when reading up-to-date pictorial information peak value.
Therefore, analog comparator 23 has the function of comparison means, be used for comparison by bleeder circuit 22 clip level that is provided with and the detection pictorial information that comes from image sensor 14, the function that has clip level setting device (being the Binary Conversion unit) in addition is used for by peak value preservation circuit 21 and bleeder circuit 22 clip level being set.
Operation principle below with reference to the picture reading apparatus 10A according to a second embodiment of the present invention of the flow chart description shown in Fig. 9 with said structure.
The operator presses the beginning knob (not shown) that is used to carry out image reading, thereby adopts the detection pictorial information that comes from image sensor 14 to begin the image reading operation.
Specifically, the voltage division signal of the peak value of up-to-date detection pictorial information from bleeder circuit 22 input and the detection pictorial information (pictorial information that original paper 12 is fed now) that is detected by image sensor 14 that comes from amplifier 16 input to analog comparator 23, with the level of these information of comparison, and the output binary message is as reading pictorial information.
When this image reading operation begins, can in MPU20, produce the mark that this equipment of expression is in the image reading mode of operation, up to this image reading EO, the binary message that comes from analog comparator 23 like this is used as the reading pictorial information.
For example, if the detection pictorial information of the original paper of presenting now 12 less than or be lower than the voltage division signal that comes from bleeder circuit 22, then can export such binary signal, the image by in illumination unit 13 irradiation positions of its expression on original paper 12 is " deceiving ".If current detection pictorial information greater than or be higher than the voltage division signal that comes from bleeder circuit 22, the binary signal of output expression " in vain " then.
In addition, when in MPU20, existing this equipment of expression to be in the mark of image reading mode of operation, do not carry out the On/Off detecting operation of capping unit 34, but carry out the renewal processing (the "Yes" path among the step B1) that peak value is preserved the peak value of preserving in the circuit 21.
That is, the analog signal as the detection pictorial information of original paper 12 that comes from image sensor 14 is amplified by amplifier 16, exports analog comparator 23 to as the detection pictorial information (vision signal) of amplifying thereafter and peak value is preserved circuit 21.
Peak value is preserved the peak value that circuit 21 is kept at the analog signal that obtains when reading last pictorial information according to the vision signal that comes from image sensor 14.22 pairs of peak values of bleeder circuit are preserved the level of preserving in the circuit 21 and are carried out dividing potential drop, and export institute's component voltage to analog comparator 23 (step B2).
If Image Detection information is less than voltage division signal, the locational image by illumination unit 13 irradiations that analog comparator 23 can detect on original paper 12 is " deceiving ", thus with binary message output black signal.
As mentioned above, by import the binary message on the whole surface of original papers 12 from analog comparator 23, MPU20 can confirm the binary message as the reading pictorial information of original paper 12.
After this, when reading process arrives last column of original paper 12, the image reading operating process finishes (the "Yes" path among the step B3), the operation of upgrading the peak value in the peak value preservation circuit 21 stops (step B4), represent this equipment to be in being marked among the MPU20 of image reading operating process in addition and reset, carrying out capping unit as described below 34 subsequently is the On/Off detecting operation (step B5) of original paper feed unit 11.
If the level that detects pictorial information is greater than voltage division signal, capping unit 34 is that original paper feed unit 11 is in closed condition, represents that thus the binary message of this state exports MPU20 (the "No" path among the step B5 is to step B7) to.
As mentioned above, picture reading apparatus 10A according to a second embodiment of the present invention has peak value and preserves circuit 21 and bleeder circuit 22, wherein, the output of bleeder circuit 22 is arranged in use in and implements clip level relatively in the analog comparator 23, therefore when image reading, the binary message that comes from analog comparator 23 can be as reading pictorial information.Under the situation except that image reading, the binary message that comes from analog comparator 23 can be as the information of the On/Off state that detects original paper feed unit 11.Therefore, identical with the situation of above-mentioned first embodiment, only adopt the existing number of components that is used for the circuit of image processing and does not increase equipment, the On/Off state that detects original paper feed unit 11 is possible.Also can suppress to constitute the increase that unnecessary expend of this equipment, and can more easily realize the hardware configuration of this equipment.
In the above-described embodiment, picture reading apparatus 10A has analog comparator 23, and it compares as the clip level signal of analog signal and detects the pictorial information level.But the present invention is not limited to the foregoing description, for example, also can compare with detecting the pictorial information level as the clip level signal of digital signal, so that detect the On/Off state of original paper feed unit 11 according to result relatively.Under situation like this, also can reach the advantage identical with this above-mentioned embodiment.
In this case, this picture reading apparatus 10A is provided with A/D converting unit 17, and it is positioned at the back one-level of amplifier 16, and being used for analog signal conversion is digital signal, for example, and the picture reading apparatus 10B in Figure 10.In addition, also be provided with peak value save register 24, voltage divider 25 and amplitude comparator 18 (this is similar to situation about describing among first embodiment), be used for substituting peak value and preserve circuit 21, bleeder circuit 22 and analog comparator 23.
More particularly, preserve peak value as the peak value save register 24 of peak value save set with the digital signal that comes from A/D converting unit 17.Voltage divider 25 outputs as bleeder mechanism pass through to carry out the bit information that the processing such as deletion (discard) obtains, for example, higher order bits information (for example 1 bit), this bit information exports amplitude comparator 18 to as clip level.
(d) explanation of the 3rd embodiment
Figure 11 is a block diagram, be used for being depicted in a third embodiment in accordance with the invention the picture reading apparatus image reading mode and detect the mode of the On/Off state of capping unit.The mode that has the On/Off state of image reading mode different and detection capping unit according to the picture reading apparatus 10C of this embodiment with the picture reading apparatus of the first and second above-mentioned embodiment.Other structures and first and second embodiment of picture reading apparatus 10C are basic identical.
That is, the picture reading apparatus 10C according to this embodiment has with reference to the described structure of Fig. 2 to 6.In addition, among Figure 11 identical reference symbol represent with Fig. 2 to 6 in identical or corresponding part.
Among Figure 11, reference number 21a represents peak value preservation circuit.This peak value is preserved circuit 21a and is had the function of light application time peak value save set, the peak value of the detection information of the image sensor 14 that when in running order (illumination unit 13) obtains when being used to be kept at illumination unit 13 irradiations, the peak value of the detection pictorial information of the image sensor 14 that obtains when also being used to be kept at illumination unit 13 and not working.
(for example bit information becomes " 1 " in working order the time to bit information, when off position, become " 0 ") input to peak value and preserve circuit 21a, as the LUMPON signal of work/off position of expression illumination unit 13, with preservation peak value when the illumination unit 13 work/off positions.
Reference number 23a represents analog comparator.This analog comparator 23a has the function of peak value comparison means, is used for that peak value is preserved the peak information that circuit 21a preserves and compares with the detection information of the image sensor 14 that obtains when illumination unit 13 is not worked.The comparative result of analog comparator 23a is exported with binary message.
Specifically, the analog comparator 23a peak information (B) that will obtain when illumination unit 13 work is compared with the peak value (A) of the detection information of the image sensor 14 of acquisition when illumination unit 13 is not worked.
If these peak levels (A) and difference (B) are big (B＞A), the reverberation that comes from as the feed roller 15 of original paper back support unit enters image sensor 14, so analog comparator 23a output expression original paper feed unit 11 is in the binary message of closed condition.
If these peak levels (A) and difference (B) are little, even reverberation can not enter image sensor 14 when illumination unit 13 is luminous, so analog comparator 23a output expression original paper feed unit 11 is in the binary message of opening.
That is to say that above-mentioned peak value is preserved circuit 21a and analog comparator 23a has constituted the binary message conversion equipment, is used for the detection pictorial information of image sensor 14 is converted to binary message.
Operation principle below with reference to the picture reading apparatus 10C with said structure of the flow chart description a third embodiment in accordance with the invention shown in Figure 12.
The operator presses the beginning knob (not shown) that is used to carry out image reading, thereby adopts the detection pictorial information that comes from image sensor 14 to begin the image reading operation.
Specifically, the peak value that comes from the detection pictorial information that obtains (pictorial information of the original paper of presenting for the last time 12) of peak value preservation circuit 21a in last reading operation when illumination unit 13 work inputs to analog comparator 23a with the detection pictorial information (pictorial information of the original paper of presenting 12) by image sensor 14 detections that comes from amplifier 16, with the level of these information of comparison, and the output binary message is as reading pictorial information.
When this image reading operation begins, can in MPU20, produce the mark that this equipment of expression is in the image reading mode of operation, up to this image reading EO, the binary message that comes from analog comparator 23a like this is used as the reading pictorial information.
For example, if the difference of the detection pictorial information of the original paper of presenting now 12 and the peak value that comes from peak value preservation circuit 21a is big (if detecting pictorial information less than peak value), then can export such binary signal, the image by in illumination unit 13 irradiation positions on its expression original paper 12 is " deceiving ".If current detection pictorial information approximates peak information, then the binary signal of " in vain " is represented in output.
When this image reading operation begins, can in MPU20, produce the mark that this equipment of expression is in the image reading mode of operation, up to this image reading EO.In this process, do not detect the operation of the On/Off state of capping unit 34, but preserve the peak value of (time, this moment, the LUMPON signal be " 1 ") the in working order acquisition when illumination unit 13 work among the circuit 21a and upgrade processing (step C2 and C3) being kept at peak value.
The analog signal as the detection pictorial information of original paper 12 that comes from image sensor 14 is amplified by amplifier 16, exports peak value to as the detection pictorial information (vision signal) of amplifying thereafter and preserves circuit 21a.
Peak value is preserved circuit 21a the peak value that obtains when illumination unit 13 is worked is upgraded processing, becomes off position (this moment, the LUMPON signal was " 0 ") (step C4) up to image reading EO and illumination unit 13.After this, peak value is preserved circuit 21a and is kept at the peak value that obtains when illumination unit 13 is in off position, and exports it to analog comparator 23a with the above-mentioned peak information that obtains when illumination unit 13 is worked.
If the peak value that obtains when illumination unit 13 is in running order is obviously greater than the peak value that obtains when illumination unit 13 is not worked, analog comparator 23a then exports the binary message that expression original paper feed unit 11 is in closed condition, because enter image sensor 14 from the reverberation as the feed roller 15 of original paper back support unit.
If the peak value that obtains when illumination unit 13 is in running order approximates the peak value that obtains when illumination unit 13 is not worked, analog comparator 23a then exports the binary message that expression original paper feed unit 11 is in opening, even because the reverberation from feed roller 15 can not enter image sensor 14 when illumination unit 13 is luminous.
A third embodiment in accordance with the invention, picture reading apparatus 10C has peak value and preserves circuit 21a and analog comparator 23a, and wherein, the comparative result of analog comparator 23a is exported as binary message.The binary message of analog comparator 23a can be as reading pictorial information when image reading.Under the situation except that image reading, this binary message can be as the information of the On/Off state that detects original paper feed unit 11.Therefore, identical with the situation of above-mentioned first and second embodiment, only adopt the existing number of components that is used for the circuit of image processing and does not increase equipment, the On/Off state that detects original paper feed unit 11 is possible, also can suppress to constitute the increase that unnecessary expend of this equipment, and can more easily realize the hardware configuration of this equipment.
(e) explanation of the 4th embodiment
Figure 13 is a block diagram, be used for being depicted in a fourth embodiment in accordance with the invention the picture reading apparatus image reading mode and detect the mode of the On/Off state of capping unit.Picture reading apparatus 10D according to this embodiment has the image reading mode similar to the picture reading apparatus of the first above-mentioned embodiment, and difference is the mode as the On/Off state of the structure of the feed roller 15A of original paper back support unit and detection capping unit 34.Other structures and first embodiment according to the picture reading apparatus 10D of this embodiment are basic identical.
In addition, among Figure 13 identical reference symbol represent with Fig. 2 to 5 in identical or corresponding part.
Have feed roller 15A, "AND" circuit 26 and trigger 27 as original paper back support unit according to the picture reading apparatus 10D of this embodiment, feed roller 15 is different from the feed roller of describing among arbitrary embodiment of front (with reference to reference number 15).
The surface of feed roller 15A has an outer regions and an interior zone that is positioned at outer regions, outer regions can receive the light that comes from illumination unit 13, and be formed with the parts that light can be reflexed to image sensor 14, interior zone is formed with the parts that light can not be reflexed to image sensor 14.
More particularly, because what above-mentioned feed roller 15A adopted is for example deceive or speculum (mirror) roller, and the both sides around roller scribble white ribbon with the interval that equates with the width of original paper, have therefore formed above-mentioned outer regions and interior zone.
If leave the zone of (come off) original paper 12 from the light of illumination unit 13 emission, outer regions reflection and reverberation that light can be fed roller 15A enter image sensor 14.
Under the state that original paper 12 is not presented, if original paper feed unit 11 is (image of feed roller 15A is read) of closing, the interior zone that amplitude comparator 18 can detect above-mentioned outer regions is " deceive " (A≤B), and the detection outer regions is " in vain " (A＞B).
26 pairs of "AND" circuits come from the binary signal of amplitude comparator 18 and carry out AND operation from symbol door (mark gate) signal of outer setting.
Because the symbol gate signal inputs to "AND" circuit 26, what adopt here is digital signal, so that only when picture reading apparatus 10D does not carry out the image reading operation, do not become enable state according to the permission signal EN that comes from MPU20, in the zone of the image that detects outer regions, become " H " level signal, in interior zone, become " L " level signal.
Therefore, when having only image sensor 14 to read the outer regions of feed roller 15A under the state that original paper 12 is not presented, therefore "AND" circuit 26 just can export the signal that presentation image is " in vain ".
Result according to the arithmetical operation of "AND" circuit 26, the result who becomes " H " level signal and arithmetical operation by " L " level signal as the result of arithmetical operation is during as clocking information, trigger 27 output " H " level signals are as representing that original paper feed unit 11 is in the binary signal of closed condition.
More particularly, can know, the reverberation that comes from the outer regions of feed roller 15A enters image sensor 14, because the result of the arithmetical operation of "AND" circuit 26 becomes " H " level signal from " L " level signal, so just might detect original paper feed unit 11 according to the output (" H " level signal) of trigger 27 and be in closed condition.
If the result of the arithmetical operation of "AND" circuit 26 keeps " L " level, 27 output expressions of trigger original paper feed unit 11 is in the binary signal (" L " level signal) of opening, does not enter image sensor 14 because come from the reverberation of the outer regions of feed roller 15A.
If picture reading apparatus 10D is in the image reading mode of operation, not to be in enable state by the symbol gate signal of outer setting, export MPU20 but read the pictorial information former states to by "AND" circuit 26 and trigger 27 from amplitude comparator 18 outputs.
Identical with the first above-mentioned embodiment, MPU20 is provided with clip level in register 19.MPU20 also has the function of data processing unit, by allowing signal EN to "AND" circuit 26 outputs, in the image reading operating process, it adopts the binary message that comes from trigger 27 as reading pictorial information, perhaps under the situation except that image reading, the output signal that its adopts trigger 27 is as the information of the On/Off state that is used to detect original paper feed unit 11.
Above-mentioned amplitude comparator 18, register 19, "AND" circuit 26 and trigger 27 have been finished the function of binary message converting unit, and the detection pictorial information that is used for coming from image sensor is converted to binary message.
Operation principle below with reference to the picture reading apparatus with said structure of the flow chart description a fourth embodiment in accordance with the invention shown in Figure 14.
The operator presses the beginning knob (not shown) that is used to carry out image reading, thereby identical with the first embodiment of the present invention, adopts the detection pictorial information that comes from image sensor 14 to begin the image reading operation.Simultaneously, in this image reading operating process, can in MPU20, produce this equipment of expression and be in the mark of image reading mode of operation, so just do not carry out the operation (the "Yes" path among the step D1) of the On/Off state that detects capping unit 34
When picture reading apparatus 10D carries out the image reading operation, original paper feed unit 11 is presented the original paper 12 that is arranged in the paper feeding storehouse 33 one by one, simultaneously, image sensor 14 receives the light by the reflection on the current original paper of presenting 12 of illumination unit 13 emissions, and according to incident light intensity output analog signal, as detecting pictorial information.
After this, amplifier 16 amplifies the analog signal that the conduct that comes from image sensor 14 detects pictorial information, and A/D converting unit 17 is a digital signal with this analog signal conversion, and amplitude comparator 18 is a binary message with this conversion of signals subsequently.
That is, amplitude comparator 18 level (A) of detection pictorial information that will come from the digital signal of A/D converting unit 17 is compared with the clip level that is arranged at register 19 (B).If detect pictorial information greater than clip level, the locational image by illumination unit 13 irradiations that amplitude comparator 18 can detect on original paper 12 is " in vain ", so with binary message output white signal.
If detect pictorial information, show that then the locational image by illumination unit 13 irradiations on original paper 12 is " deceiving ", so with binary message output black signal less than clip level.
As mentioned above, the binary message on the whole surface of original paper 12 inputs to MPU20 by amplitude comparator 18, "AND" circuit 26 and trigger 27, produces and confirm the reading pictorial information of original paper 12 thus.
After this.When the image reading EO, represent that this equipment is in being marked among the MPU20 of image reading operation and resets (reset), so that detect the operation that capping unit 34 is the On/Off state of original paper feed unit 11 (the "No" path among the step D1).
At first, MPU20 control illumination unit 13 be operating state (step D2), and makes from the limitation signal of the symbol gate signal of outer setting and setting register 19 and be in enable state (step D3 and D4).
26 pairs of "AND" circuits come from the binary signal of amplitude comparator 18 this moment and carry out AND operation from the symbol gate signal of outer setting.Trigger 27 detects the information of the On/Off state of original paper feed unit 11 according to the variation output of the signal that comes from "AND" circuit 26.
Specifically, if original paper feed unit 11 is closed, the interior zone that can detect outer regions from the binary signal of amplitude comparator 18 is that " deceiving ", (A≤B), detect simultaneously " H " level signal, its expression outer regions were " in vain " (A＞B).
As mentioned above, the symbol gate signal is such digital signal, so that it becomes " H " level in the zone of the image that detects outer regions, perhaps becomes " L " level in the interior zone of outer peripheral areas.If original paper feed unit 11 is closed, only when image sensor 14 was read the outer regions of feed roller 15A, "AND" circuit 26 just can be exported the signal (" H " level signal) of presentation image for " in vain ".
Operation result according to "AND" circuit 26, the result who becomes " H " level signal and computing by " L " level signal as the result of computing is during as clocking information, trigger 27 output " H " level signals confirm that thus original paper feed unit 11 is in closed condition.
If the operation result of "AND" circuit 26 is kept " L " level signal, 27 output expressions of trigger original paper feed unit 11 is in the binary signal (" L " level signal) of opening, can not enter image sensor 14 because come from the reverberation of the outer regions of feed roller 15A.
In other words, after the MPU20 instruction began to detect, if the output of amplitude comparator 18 is not " H " level in next line, trigger 27 confirmed that original paper feed unit 11 is (the "Yes" path from step D5 is to step D6) that open.If be output as " H " level signal, trigger 27 confirms that original paper feed unit 11 is (the "No" path from step D5 is to step D7) that close
In the picture reading apparatus 10D of a fourth embodiment in accordance with the invention, when image reading, MPU20 can adopt the binary message that comes from trigger 27 as reading pictorial information, and under the situation except that image reading, adopt the information of this information as the On/Off state that detects original paper feed unit 11.Therefore, only adopt the existing number of components that is used for the circuit of image processing and does not increase equipment, the On/Off state that detects original paper feed unit 11 is possible, also can suppress to constitute the increase that unnecessary expend of this equipment, and can more easily realize the hardware configuration of this equipment.
Claims (10)
1. picture reading apparatus comprises:
One can opening and closing the original paper feed unit, be used to present an original paper group;
A luminescence unit is used for the described original paper that illumination is presented by described original paper feed unit;
An image sensor, it is arranged on the feed path of described original paper feed unit, is used for detecting according to the reverberation that comes from described original paper the image of described original paper;
A binary message converting unit, the detection pictorial information that is used for coming from described image sensor is converted to binary message; With
A data processing unit, when image reading, it adopts the binary message that comes from described binary message converting unit as reading pictorial information, with under the situation except that image reading, it adopts this binary message information as the On/Off state that is used to detect described original paper feed unit.
2. according to the picture reading apparatus of claim 1, wherein, described Binary Conversion unit comprises a clip level setting device and a comparison means, the clip level setting device is used to be provided with clip level, comparison means is used for the clip level and the detection pictorial information that come from described image sensor of comparison by the setting of described clip level setting device, and described binary message converting unit is exported by described comparison means result relatively as described binary message.
3. according to the picture reading apparatus of claim 2, wherein, described clip level setting device comprises a register, and described clip level sets in advance in this register.
4. according to the picture reading apparatus of claim 2, wherein, described clip level setting device comprises a peak value save set and a bleeder mechanism, the peak value save set is used to preserve the peak value from the detection pictorial information of the last input of described image sensor, bleeder mechanism is used for the level that is kept at described peak value save set is carried out dividing potential drop, and described clip level setting device is set to clip level by the result that described bleeder mechanism dividing potential drop produces.
5. according to the picture reading apparatus of claim 1, wherein, described binary message converting unit comprises a light application time peak value save set and a peak value comparison means, the former is used to be kept at the peak value of the detection information of the described image sensor that described luminescence unit obtains when luminous, the latter is used for the detection information of peak information that comparison preserves at described light application time peak value save set and the described image sensor that obtains when described luminescence unit is not luminous, and the output of described binary message converting unit by described peak value comparison means result relatively as described binary message.
6. according to the picture reading apparatus of claim 1, also comprise an original paper back support unit, it is arranged on the position crossing over described feed path, the above original paper back support unit can reflect the light that comes from described luminescence unit in this position, and the whole surface of described original paper back support unit is formed with the parts that the light that comes from described luminescence unit can be reflexed to described image sensor.
7. according to the picture reading apparatus of claim 1, also comprise an original paper back support unit, it is arranged on the position crossing over described feed path, the above original paper back support unit can reflex to the light that comes from described luminescence unit described image sensor in this position, the interior zone that described original paper back support unit has an outer regions and a described outer regions, outer regions can receive the light that comes from described luminescence unit and be formed with the parts that described light can be reflexed to described image sensor, and interior zone is formed with the parts that described light can not be reflexed to described image sensor.
8. the method for the On/Off state of an original paper feed unit that is used for detecting picture reading apparatus, described picture reading apparatus comprises: described original paper feed unit, it can opening and closing, are used to present an original paper group; A luminescence unit is used for the described original paper that illumination is presented by described original paper feed unit; An image sensor, it is arranged on the feed path of described original paper feed unit, is used for detecting according to the reverberation that comes from described original paper the image of described original paper; A binary message converting unit, the detection pictorial information that is used for coming from described image sensor is converted to binary message; With an original paper back support unit, it is arranged on the position crossing over described feed path, the above original paper back support unit can reflex to the light that comes from described luminescence unit described image sensor in this position, said method comprising the steps of:
When image reading, adopt according to the amplitude of the detection pictorial information that comes from described image sensor and be arranged on binary message that the clip level in the described binary message converting unit changes as reading pictorial information; With
Under the situation except that image reading, the described detection pictorial information that will obtain when described luminescence unit is worked is compared with the described clip level in the described binary message converting unit, if described detection pictorial information less than or be lower than described clip level, then detect described original paper feed unit and be in opening, if and described detection pictorial information is higher than or greater than described clip level, just detects described original paper feed unit and be in closed condition.
9. the method for the On/Off state of an original paper feed unit that is used for detecting picture reading apparatus, described picture reading apparatus comprises: described original paper feed unit, it can opening and closing, are used to present an original paper group; A luminescence unit is used for the described original paper that illumination is presented by described original paper feed unit; An image sensor, it is arranged on the feed path of described original paper feed unit, is used for detecting according to the reverberation that comes from described original paper the image of described original paper; A binary message converting unit, the detection pictorial information that is used for coming from described image sensor is converted to binary message; With an original paper back support unit, it is arranged on the position crossing over described feed path, the above original paper back support unit can reflex to the light that comes from described luminescence unit described image sensor in this position, said method comprising the steps of:
When image reading, adopt according to the amplitude of the detection pictorial information that comes from described image sensor and be arranged on binary message that the clip level in the described binary message converting unit changes as reading pictorial information; With
Under the situation except that image reading, the described detection pictorial information that will obtain when described luminescence unit is not worked is compared with the described clip level in the described binary message converting unit, if described detection pictorial information greater than or be higher than described clip level, then detect described original paper feed unit and be in opening, if and described detection pictorial information is lower than or less than described clip level, just detect described original paper feed unit and be in closed condition.
10. the method for the On/Off state of an original paper feed unit that is used for detecting picture reading apparatus, described picture reading apparatus comprises: described original paper feed unit, it can opening and closing, are used to present an original paper group; A luminescence unit is used for the described original paper that illumination is presented by described original paper feed unit; An image sensor, it is arranged on the feed path of described original paper feed unit, is used for detecting by the reverberation that is received from described original paper the image of described original paper; A binary message converting unit, the detection pictorial information that is used for coming from described image sensor is converted to binary message, the described binary message that wherein comes from described binary message converting unit is used as the reading pictorial information when image reading, said method comprising the steps of:
The peak value of the detection pictorial information of the described image sensor that will obtain when described luminescence unit is luminous is stored in the described binary message converting unit, and described peak information is compared with the detection pictorial information of the described image sensor that obtains when described luminescence unit is not luminous; With
If described detection pictorial information approximates described peak information, then detect described original paper feed unit and be in opening, if and described detection pictorial information is less than described peak information, according to the comparative result of described binary message converting unit under the situation except that image reading, just detect described original paper feed unit and be in closed condition.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP42596A JPH09188725A (en) | 1996-01-08 | 1996-01-08 | Curable liquid resin and its composition |
| JP004254/96 | 1996-01-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1155205A true CN1155205A (en) | 1997-07-23 |
| CN1097941C CN1097941C (en) | 2003-01-01 |
Family
ID=11473461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96111138 Expired - Fee Related CN1097941C (en) | 1996-01-08 | 1996-08-20 | Method for open-close of picture reading equipment and detecting element feed unit |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH09188725A (en) |
| CN (1) | CN1097941C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102348037A (en) * | 2010-07-27 | 2012-02-08 | 柯尼卡美能达商用科技株式会社 | Document reading apparatus |
| CN103188417A (en) * | 2011-12-27 | 2013-07-03 | 兄弟工业株式会社 | Image-reading device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1288234A1 (en) * | 2001-08-27 | 2003-03-05 | Sigma Coatings B.V. | Binders with low content in hydrolysable monomer suitable for selfpolishing antifouling paints |
| US10907000B2 (en) * | 2015-05-21 | 2021-02-02 | Isp Investments Llc | Functionally versatile amphiphilic copolymers |
| JP6688178B2 (en) * | 2015-07-14 | 2020-04-28 | 住友化学株式会社 | Resist composition |
-
1996
- 1996-01-08 JP JP42596A patent/JPH09188725A/en active Pending
- 1996-08-20 CN CN 96111138 patent/CN1097941C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102348037A (en) * | 2010-07-27 | 2012-02-08 | 柯尼卡美能达商用科技株式会社 | Document reading apparatus |
| CN103188417A (en) * | 2011-12-27 | 2013-07-03 | 兄弟工业株式会社 | Image-reading device |
| CN103188417B (en) * | 2011-12-27 | 2015-12-23 | 兄弟工业株式会社 | Reading device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1097941C (en) | 2003-01-01 |
| JPH09188725A (en) | 1997-07-22 |
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