CN101487995B - Image forming apparatus - Google Patents

Image forming apparatus Download PDF

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Publication number
CN101487995B
CN101487995B CN2009100051252A CN200910005125A CN101487995B CN 101487995 B CN101487995 B CN 101487995B CN 2009100051252 A CN2009100051252 A CN 2009100051252A CN 200910005125 A CN200910005125 A CN 200910005125A CN 101487995 B CN101487995 B CN 101487995B
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China
Prior art keywords
image forming
forming conditions
image
toner
photosensitive drums
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CN101487995A (en
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植村聪
中野一成
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Kyocera Document Solutions Inc
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Kyocera Mita Corp
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  • Facsimile Image Signal Circuits (AREA)

Abstract

The invention provides an image forming apparatus including an image formation portion forming an image onto a recording medium in an electro-photographic process. An acquisition portion acquires image data and a storage portion stores in advance first and second image formation conditions for the electro-photographic process. A condition setting portion sets the first image-formation condition for an image formation operation, if data indicating a bar code is not included in image data acquired by the acquisition portion, and sets the second image formation condition for an image formation operation if image data indicating a bar code is included in image data acquired by the acquisition portion. A control portion allows the image formation portion to execute an image formation operation based on image data acquired by the acquisition portion according to the image formation condition set by the condition setting portion.

Description

Image processing system
Technical field
The invention belongs to the technical field of image processing system, relate generally to bar code is recorded in technology on the printing medium.
Background technology
In recent years, the chance of image processing system printed bar code such as printer increases, and it is more and more thinner to be accompanied by bar (bar), requires the cry of raising bar code printing precision also more and more higher.For example to disclose for No. 3370711 a kind of be the technology of purpose to improve the bar code printing precision to Japanese patent gazette, constituting under the situation of bar code with black thick line, black fine rule, white thick line, white fine rule, consider that spreading and sinking in of ink ooze to determine to form counting of each line, print each line with the thin live width of the desired thickness degree of each line (bar), so that the live width that ink is spread and sunk in after oozing reaches only thickness degree than original bar code.
As mentioned above, disclosed technology only is conceived to the thickness degree of bar in No. the 3370711st, the Japanese patent gazette, its objective is with suitable thickness degree to print described black thick line, black fine rule, white thick line, white fine rule.
Determine that the parameter of bar code printing precision is not only the thickness degree of bar, comprise also whether the concentration of bar, white line part are whether white, bar do not produce damaged part etc. really.In No. the 3370711st, Japanese patent gazette, do not consider these thickness degree parameter in addition, so improve the leeway of bar code printing precision in addition.
In addition, form in the device, carry out Flame Image Process, then might reduce the quality of the common image except that bar code if live width is attenuated for the picture quality that improves bar code in the general image of except that printed bar code, also carrying out other printings.
Summary of the invention
The object of the present invention is to provide a kind of image processing system that can not reduce the quality of the common image except that bar code and can improve the picture quality of bar code.
The invention provides a kind of image processing system, comprise: image forming part, adopt electrophotographic method, form image on the face being recorded of printing medium of carrying to the throughput direction of regulation, described electrophotographic method is, utilize toner that the electrostatic latent image of presentation video is developed, obtain the toner picture, and this toner is looked like to carry out the method that transfer printing forms image; Image data acquisition portion obtains view data; The image forming conditions storage part is stored in advance as different first image forming conditions and second image forming conditions described electrophotographic method condition, mutual; The image forming conditions configuration part, carry out image forming conditions and set processing, when not comprising the data of representing bar code in the view data of obtaining by described image data acquisition portion, described first image forming conditions is set at according to this view data carries out the image forming conditions of image when forming action, when comprising the view data of representing bar code in the view data of obtaining by described image data acquisition portion, on described throughput direction, the described face that is recorded is divided into first scope that there is bar code and second scope in addition, set described second image forming conditions as carry out the image forming conditions of image when forming action according to first view data that forms image in described first scope, set described first image forming conditions as carry out the image forming conditions of image when forming action according to second view data that forms image in described second scope; And image forms control part, and the image that described image forming part is carried out based on the view data of being obtained by described image data acquisition portion according to the image forming conditions of being set by described image forming conditions configuration part forms action.
According to such structure, when not comprising the data of representing bar code in the view data of obtaining by image data acquisition portion, promptly, will carry out image to the common image that does not comprise bar code when forming, the image forming conditions configuration part is set at first image forming conditions that is fit to the electrophotographic method that common image forms according to this view data carries out the image forming conditions of image when forming action.Thus, image forming part can carry out image according to the view data of being obtained by image data acquisition portion and form according to being fit to the image forming conditions that common image forms, and reduces so can reduce the quality of the common image except that bar code.
On the other hand, when comprising the view data of representing bar code in the view data of obtaining by image data acquisition portion, promptly, carry out image when forming to bar code, second image forming conditions of the electrophotographic method that handle image different with first image forming conditions, that be fit to bar code in image forming conditions configuration part forms is set at according to this view data carries out the image forming conditions of image when forming action.Therefore, image forming part carries out image formation according to the image forming conditions that is fit to form bar code image according to the view data that image data acquisition portion obtains, and can improve the picture quality of bar code thus.In this case, owing to can make the condition of electrophotographic method be fit to the image formation of bar code, so also can improve the picture quality of bar code to the thickness degree key element in addition of bar.Its result, the quality that can reduce bar code common image in addition reduces, and improves the picture quality of bar code.
If the image forming conditions that adopt thickness degree or the concentration of suitably adjusting the bar of bar code, guarantee that the white line part is white fully, prevents to produce on the bar raisings bar code image quality such as damaged part is carried out image formation, then when existing bar code image data in view data have view data beyond the bar code again, the bar code image forming conditions and the suitable condition that forms bar code image of part does not in addition match, and might cause the bar code picture quality reduction of part in addition.
But, adopt described structure, when comprising the view data of representing bar code in the view data of obtaining by described image data acquisition portion, on described throughput direction, the described face that is recorded is divided into first scope that there is bar code and second scope in addition, the image forming conditions (described second image forming conditions) different with described first image forming conditions (image forming conditions when not comprising the view data of representing bar code in the view data of being obtained by described image data acquisition portion) be set at carry out image according to first view data that forms image in described first scope and form image forming conditions when moving, so can form the image that comprises the bar code part with the image forming conditions that is fit to the formation bar code image, and form the image that does not comprise the bar code part with the image forming conditions that is fit to the common image of formation.
In addition, when comprising the view data of representing bar code in the view data of obtaining by described image data acquisition portion, described first image forming conditions is set at according to the image forming conditions when second view data of described second scope formation image is carried out image formation action, so be under the situation of paper for example at printing medium, can carry out image and form action with the image forming conditions that is fit to bar code image in addition in the image of an original copy.
Its result has again at existing bar code image under the situation of the image except that bar code image, can guarantee to form the bar code image of high image quality, and can reduce the bar code reduction of the image quality of image in addition.
In addition preferably: described image forming part has developer roll, and this developer roll is used to the alternating voltage accepting to be provided, and toner is offered photosensitive drums, and the electrostatic latent image that forms on this photosensitive drum surface is developed; The frequency values of the alternating voltage of setting in the frequency values of the alternating voltage of setting in described second image forming conditions that described developer roll is applied and described first image forming conditions that described developer roll is applied is different.
In addition preferably: described image forming part has photosensitive drums, forms electrostatic latent image on this photosensitive drum surface; The surface electrical place value of the described photosensitive drums of setting in the surface electrical place value of the described photosensitive drums of setting in described second image forming conditions and described first image forming conditions is different.
In addition preferably: described image forming part has developer roll, and this developer roll is used to the DC voltage accepting to be provided, and toner is offered photosensitive drums, and the electrostatic latent image that forms on this photosensitive drum surface is developed; The value of the DC voltage of setting in the value of the DC voltage of setting in described second image forming conditions that described developer roll is applied and described first image forming conditions that described developer roll is applied is different.
In addition preferably, described image forming part comprises: photosensitive drums, its surface go up the electrostatic latent image that forms and pass through toner development; And transfer roll, when with the described printing medium of described photosensitive drums clamping, the opposite polarity polarity that is developed in the toner of the toner picture on the described photosensitive drum surface by handle and formation is given described printing medium, and described toner is transferred on the described printing medium; The value of the transfer printing electric current of setting in the value of the transfer printing electric current of setting in described second image forming conditions that offers described transfer roll and described first image forming conditions that offers described transfer roll is different.
In addition preferably: described printing medium is the thin slice body of sheet; Described image processing system also comprises: manuscript reading section, read the image of original copy; Guide portion, the thin slice body that guides the user will form image according to the indication of described image formation control part offers described manuscript reading section and reads action; And evaluation portion, to by after the described guide portion channeling conduct by described manuscript reading section read the view data that obtains of action, carry out the image quality evaluation; Described image forming conditions configuration part changes described second image forming conditions when not from evaluation that described evaluation portion obtains stipulating, to improve the evaluation of described evaluation portion.
Adopt described structure, when evaluation that described evaluation portion does not obtain stipulating, change described second image forming conditions, improving the evaluation of described evaluation portion, so can set the image forming conditions of the most suitable formation bar code image in a plurality of image forming conditions that image processing system has.
In addition preferably: described image forming part has developer roll, and this developer roll is used to the alternating voltage accepting to be provided, and toner is offered photosensitive drums, and the electrostatic latent image that forms on this photosensitive drum surface is developed; The frequency of the described alternating voltage of setting respectively in described first image forming conditions and second image forming conditions is mutually different value; Described evaluation portion estimates toner splash state; Described image forming conditions configuration part during not from evaluation that described evaluation portion obtains stipulating, changes described second image forming conditions when more than the state of predesignating because of the toner splash, and the frequency of described alternating voltage is increased.
If increasing makes toner move to the frequency of the alternating voltage on the photosensitive drums from developer roll, then the toner splash reduces, so under the situation that the toner splash is Duoed than the state of predesignating, make toner move to the frequency of the alternating voltage on the photosensitive drums from developer roll by increase, can reduce the toner splash, improve the evaluation of evaluation portion.
In addition preferably: described image forming part has developer roll, and this developer roll is used to the alternating voltage accepting to be provided, and toner is offered photosensitive drums, and the electrostatic latent image that forms on this photosensitive drum surface is developed; The frequency of the described alternating voltage of setting respectively in described first image forming conditions and second image forming conditions is mutually different value; Described evaluation portion estimates contrast, and this contrast represents that the view data of two bar boundary members of adjacent different colours changes size; Described image forming conditions configuration part when not obtaining the evaluation of described regulation, changes the frequency of the described alternating voltage of setting in described second image forming conditions when because of described contrast is littler than the state of predesignating.
Be used to make toner to move between the contrast of the frequency of the alternating voltage that photosensitive drums develops and image and have correlationship, so contrast than the low situation of the state of predesignating under, improve contrast by the frequency that changes alternating voltage, can improve the evaluation of evaluation portion.
In addition preferably: described image forming part has photosensitive drums, forms electrostatic latent image on this photosensitive drum surface; The surface electrical place value of the described photosensitive drums of setting respectively in described first image forming conditions and second image forming conditions is different; Described evaluation portion estimates the damage condition of bar; Described image forming conditions configuration part when not obtaining the evaluation of described regulation, changes described second image forming conditions when more serious than the state of predesignating because of described damage condition, and the surface potential of described photosensitive drums is reduced.
If the surface potential of photosensitive drums is reduced, toning dosage when then electrostatic latent image develops increases, so the damage condition of the dense bar of concentration (for example secret note) than the state serious situation of predesignating under, by reducing the surface potential of photosensitive drums, toner concentration is thickened, reduce the damaged of bar, can improve the evaluation of evaluation portion.
In addition preferably: described image forming part has photosensitive drums, forms electrostatic latent image on this photosensitive drum surface; The surface potential of the described photosensitive drums of setting respectively in described first image forming conditions and second image forming conditions is mutually different value; Described evaluation portion estimates the light reflectivity of the bar that constitutes described bar code; Described image forming conditions configuration part when not obtaining the evaluation of described regulation, changes described second image forming conditions when because of described light reflectivity is lower than the state of predesignating, and the surface potential of described photosensitive drums is increased.
If improve the surface potential of photosensitive drums, toning dosage when then electrostatic latent image develops reduces, so under the situation of light reflectivity than the state of predesignating low (concentration is dense) of the light bar of concentration (for example informal voucher), by increasing the surface potential of photosensitive drums, make toner concentration thin out, improve the light reflectivity of bar, can improve the evaluation of evaluation portion.
In addition preferably: described image forming part has photosensitive drums, forms electrostatic latent image on this photosensitive drum surface; The surface electrical place value of the described photosensitive drums of setting respectively in described first image forming conditions and second image forming conditions is different; Described evaluation portion estimates contrast, and this contrast represents that the view data of two bar boundary members of adjacent different colours changes size; Described image forming conditions configuration part when not obtaining the evaluation of described regulation, changes the surface potential of described photosensitive drums when because of described contrast is littler than the state of predesignating.
Owing between the contrast of the surface potential of photosensitive drums and image, have correlationship, so under the situation of contrast than the state of predesignating little (low), the surface potential by changing photosensitive drums can improve the evaluation of evaluation portion with the raising contrast.
In addition preferably: described image forming part has developer roll, and this developer roll is used to the DC voltage accepting to be provided, and toner is offered photosensitive drums, and the electrostatic latent image that forms on this photosensitive drum surface is developed; The value of the described DC voltage of setting respectively in described first image forming conditions and second image forming conditions is different; Described evaluation portion estimates the damage condition of bar; Described image forming conditions configuration part when not obtaining the evaluation of described regulation, changes described second image forming conditions more serious than the state of predesignating because of described damage condition, and described DC voltage is increased.
If the DC voltage that provides to developer roll is provided, toning dosage when then electrostatic latent image develops increases, so the damage condition of the dense bar of concentration (for example secret note) than the state serious situation of predesignating under, by the DC voltage that provides to developer roll is provided, toner concentration is thickened, reduce the damaged of bar, can improve the evaluation of evaluation portion.
In addition preferably: described image forming part has developer roll, and this developer roll is used to the DC voltage accepting to be provided, and toner is offered photosensitive drums, and the electrostatic latent image that forms on this photosensitive drum surface is developed; The value of the described DC voltage of setting respectively in described first image forming conditions and second image forming conditions is different; Described evaluation portion estimates the light reflectivity of the bar that constitutes described bar code; Described image forming conditions configuration part when not obtaining the evaluation of described regulation, changes described second image forming conditions when because of described light reflectivity is lower than the state of predesignating, and described DC voltage is reduced.
If the DC voltage that provides to developer roll is provided, toning dosage when then electrostatic latent image develops reduces, so under the situation of light reflectivity than the state of predesignating low (concentration is dense) of the light bar of concentration (for example informal voucher), by reducing this DC voltage, make toner concentration thin out, improve the light reflectivity of bar, can improve the evaluation of evaluation portion.
In addition preferably: described image forming part has developer roll, and this developer roll is used to the DC voltage accepting to be provided, and toner is offered photosensitive drums, and the electrostatic latent image that forms on this photosensitive drum surface is developed; The value of the described DC voltage of setting respectively in described first image forming conditions and second image forming conditions is different; Described evaluation portion estimates contrast, and this contrast represents that the view data of two bar boundary members of adjacent different colours changes size; Described image forming conditions configuration part when not obtaining the evaluation of described regulation, changes the described DC voltage in described second image forming conditions when because of described contrast is littler than the state of predesignating.
Owing between the contrast of DC voltage that developer roll provides and image, have correlationship, so under the situation of contrast than the state of predesignating little (low), by the DC voltage that provides to developer roll is provided, contrast is improved, can improve the evaluation of evaluation portion.
In addition preferably, described image forming part comprises: photosensitive drums, and the electrostatic latent image of Xing Chenging passes through toner development in its surface; And transfer roll, when with the described printing medium of described photosensitive drums clamping, the opposite polarity polarity that is developed in the toner of the toner picture on the described photosensitive drum surface by handle and formation is given described printing medium, produce the transfer printing electric current, described toner is transferred on the described printing medium; The value of the described transfer printing electric current of setting respectively in described first image forming conditions and second image forming conditions is different; Described evaluation portion estimates toner splash state; Described image forming conditions configuration part is when many than the state of predesignating because of the toner splash, during the evaluation that do not obtain stipulating, changes the described transfer printing electric current of setting in described second image forming conditions, makes described transfer printing electric current increase.
If increase the transfer printing electric current, then the toner splash reduces, so under the situation that the toner splash is Duoed than the state of predesignating, by increasing the transfer printing electric current, the toner splash is reduced, can improve the evaluation of evaluation portion.
In addition preferably, described image forming part comprises: photosensitive drums, and the electrostatic latent image of Xing Chenging passes through toner development in its surface; And transfer roll, when with the described printing medium of described photosensitive drums clamping, the opposite polarity polarity that is developed in the toner of the toner picture on the described photosensitive drum surface by handle and formation is given described printing medium, produce the transfer printing electric current, described toner is transferred on the described printing medium; The value of the described transfer printing electric current of setting respectively in described first image forming conditions and second image forming conditions is different; Described evaluation portion estimates contrast, and this contrast represents that the view data of two bar boundary members of adjacent different colours changes size; Described image forming conditions configuration part when not obtaining the evaluation of described regulation, changes described second image forming conditions when because of described contrast is littler than the state of predesignating, and described transfer printing electric current is increased.
If increase the transfer printing electric current, then the contrast of image increases (raisings), thus contrast than the little situation of the state of predesignating under, by increase transfer printing electric current, make contrast increase (raising), can improve the evaluation of evaluation portion.
In addition preferably: described image data acquisition portion obtains the multi-page pictures data; Described image forming conditions configuration part is carried out described image forming conditions and is set processing per 1 page of described view data.
According to this formation, the page or leaf that does not comprise bar code carries out image with first image forming conditions that is fit to common image formation and forms, the page or leaf that comprises bar code carries out image with second image forming conditions that is fit to bar code image formation and forms, reduce so can prevent from not comprise the picture quality of the page or leaf of bar code, and can improve the picture quality of bar code.
In addition preferably: also comprise the indication receiving portion, accept to carry out described image forming conditions and set the indication of handling; Described image forming conditions configuration part is under the situation of having been accepted described execution indication by described indication receiving portion, carry out described image forming conditions and set processing, and under the situation of not accepting described execution indication by described indication receiving portion, no matter in the view data of obtaining by described image data acquisition portion, whether comprise the data of represent bar code, all described first image forming conditions is set at and carries out image according to this view data and form image forming conditions when moving.
According to this structure, when the user will improve the picture quality of bar code, send the carries out image formation condition by the indication receiving portion and set the indication of handling, so just can utilize second image forming conditions that is fit to bar code to carry out image and form, so can improve the picture quality that is formed on the bar code on the printing medium.On the other hand, when the user compares with bar code when paying the utmost attention to common image quality in images, as long as the indication receiving portion is confiscated the carries out image formation condition and is set the indication of handling, then no matter whether comprise bar code in the view data, all utilize to be fit to first image forming conditions that common image forms and to carry out image and form, reduce so can prevent the quality of the common image that on printing medium, forms.
Description of drawings
Fig. 1 be expression image processing system of the present invention an embodiment just analyse and observe key diagram.
Fig. 2 is the key diagram of an example of the image forming part structure shown in Figure 1 of expression in detail.
Fig. 3 is the block diagram of an example of expression printing electromechanical structure shown in Figure 1.
Fig. 4 is the figure that expression is stored in an example of the image forming conditions table in the table storage part.
Fig. 5 is the figure that is used to illustrate image forming conditions setting processing.
Fig. 6 is the figure of expression guide picture, and this guide picture is used to guide the user to allow manuscript reading section read image on the paper.
Fig. 7 A, Fig. 7 B are the figure that is used to illustrate the method for estimating the bar code image image quality that reads.
Fig. 8 is the process flow diagram of an example of expression image processing system action shown in Figure 1.
Fig. 9 is the process flow diagram that the expression control part carries out the image forming conditions setting processing of bar code.
Embodiment
Embodiment to image processing system of the present invention describes below.The ingredient that has same reference numerals in each figure is represented identical ingredient, the Therefore, omited explanation.Fig. 1 is the figure of the structure of expression image processing system first embodiment of the present invention.
As shown in Figure 1, image processing system 1 comprises: manuscript reading section 802 is arranged on the top of this device; And original copy supply unit 803, be configured in the top of manuscript reading section 802.
Manuscript reading section 802 comprises: scanner section 811, and it has CCD (charge-coupled image sensor) sensor and exposure lamp etc.; Document board 812 is made of transparent components such as glass; And original copy reads slit 813.
Scanner section 811 can move up along the right and left of original copy face at Fig. 1 by abridged drive division among the figure, and the pixel column of described ccd sensor comes on the direction vertical with the described moving direction direction of paper (among the Fig. 1 perpendicular to).
When reading the original copy that is positioned on the document board 812, scanner section 811 moves up along the right and left of original copy face at Fig. 1 in the position relative with document board 812, and the limit is scanned the limit to original image the view data of obtaining is exported to control part 100 (Fig. 3).This is external when the original copy that is provided by original copy supply unit 803 is provided, scanner section 811 moves to original copy and reads the relative position of slit 813, carry the action of original copy synchronous with original copy supply unit 803, read the image that slit 813 obtains original copy by original copy, and this view data is exported to control part 100.
Original copy supply unit 803 comprises: original copy placement section 814 is used to place original copy; Original copy discharge portion 815 is used for the original copy after the reading images is discharged; Original copy conveying mechanism 816 has paper feed roller and conveying roller (among the figure not expression) etc., is used for more than extraction of original copy that are placed on the original copy placement section 814, and to reading the relative position conveying of slit 813 with original copy, and to 815 discharges of original copy discharge portion.Original copy conveying mechanism 816 also has paper switching mechanism (not expression among the figure), be used for the positive and negative upset of original copy, again carry to reading the relative position of slit 813, thereby can read slit 813, read the two-sided image of original copy by scanner section 811 by original copy with original copy.
In addition, original copy supply unit 803 can rotate freely with respect to apparatus main body, and its front one side can be moved upward.By the front one side direction top that makes original copy supply unit 803 move expose document board 812 above, the operator can be placed on the original copy that the books of for example open mode etc. will read document board 812 above.
Be provided with operating portion 804 in the front portion of image processing system 1.This operating portion 804 has: bar code key 801 (indication receiving portion) is used for indicative of settings bar code pattern; Initiating key 805 is used for the user and imports execution printing indication; Figure key 806 is used for input printing umber etc.; Display part 807 is made of the LCD with touch panel function etc., shows the operation guiding information of various duplicating actions etc., and is used to import various settings; Reset key 808 resets the setting content set at display part 807 etc.; Stop key 809 is used to stop executory printing (image formation) action; And function switch key 810, be used for the various functions that image processing system 1 has are switched.
Image processing system 1 comprises: paper reservoir 12, store paper P (printing medium) for printing treatment; Image forming part 13 is piled up among the P1 by many paper P enforcement image transfer process of extracting out the paper from be stored in paper reservoir 12; Fixing device 14 is implemented photographic fixing to the paper P that has been implemented transfer process in image forming part 13 and is handled; And paper delivery portion 15, be used for be implemented the paper P discharge that photographic fixing is handled at fixing device 14.
Be provided with the carton 121 of specified quantity (being one in the present embodiment) in paper reservoir 12, described carton 121 can insert freely or pull out with respect to apparatus main body 11.Upstream extremity (right side of Fig. 1) at carton 121 is provided with pickup roller 122, and described pickup roller 122 is piled up many pieces of paper P the P1 from paper and extracted out.The paper P that utilizes the driving of this pickup roller 122 from carton 121, to be drawn out of, by paper supply passage 123 and the alignment roller that is arranged on these paper supply passage 123 downstream end to 124, to image forming part 13 paper supplies.
Image forming part 13 is according to the image information that sends to PERCOM peripheral communication I/F (interface) portion 111 by transmission passage 110 described later from computing machine etc., enforcement is transferred to processing on the paper P to toner image, in this image processing system 13, periphery along photosensitive drums 20, position directly over this photosensitive drums 20 disposes charged roller 30 (electro-mechanical part) to clockwise direction, exposure device 40, developing apparatus 50 (development section), transfer roll 60 (transfer printing portion) and cleaning device 70, described photosensitive drums 20 can be rotated around the drum axle that extends along fore-and-aft direction (with the vertical direction of paper among Fig. 1).
After photosensitive drums 20 is used on its periphery forming electrostatic latent image, form toner picture that should electrostatic latent image, stacked amorphous silicon layer on the periphery of photosensitive drums 20 is suitable for forming described picture thus.This photosensitive drums 20 is concentric along the drum axle that fore-and-aft direction (direction vertical with the paper of Fig. 1) extends with the cardinal principle central part at apparatus main body 11, and be supported on integratedly on this drum axle, follow and rouse axle by the driving of abridged drive unit among the figure and to clockwise direction driving rotation, photosensitive drums 20 can be roused the axle unitary rotation with this.
Charged roller 30 forms uniform electric charge around rousing core on the periphery of the photosensitive drums 20 that clockwise direction is rotated, the periphery butt of the periphery of charged roller 30 and photosensitive drums 20, and driven rotation limit, limit is given this photosensitive drums 20 electric charge.Also can adopt the mode of the corona discharge of the periphery by electric charge being given photosensitive drums 20 from corona discharge wiry in addition, substitute charged roller 30.
Exposure device 40 has been given strong and weak laser to the periphery irradiation of the photosensitive drums 20 of rotating according to the view data that sends from external units such as computing machines, and the electric charge of the part that shines laser is disappeared, and forms electrostatic latent image thus on this periphery.
Developing apparatus 50 provides toner as developer by the periphery to photosensitive drums 20, makes on the part that is formed with electrostatic latent image of toner attached to periphery, forms the toner picture thus on the periphery of photosensitive drums 20.In the present embodiment, adopt the so-called monocomponent toner that only constitutes by toner.But, image processing system of the present invention is not limited to the monocomponent toner of developer for only being made of toner, also can be the so-called two-component developing agent that comprises toner and carrier.
Transfer roll 60 is used for the paper P that is sent to position under the photosensitive drums 20 looking like to be transferred at the toner of the positively charged that forms on the periphery of this photosensitive drums 20, for this negative charge with the opposite polarity of toner picture is given paper P.
Therefore, cross under the photosensitive drums 20 that the paper P of position is transferred roller 60 and photosensitive drums 20 is pushed clamping, and the toner picture on photosensitive drums 20 peripheries of positively charged is implemented transfer process to paper P thus by to electronegative paper P sur-face peeling.
Cleaning device 70 is used to remove the toner on the periphery that remains in photosensitive drums 20 after the transfer process, makes its cleaning.With the periphery of the photosensitive drums 20 after these cleaning device 70 cleanings,, next image rotates to charged roller 30 for forming to handle again.
Fixing device 14 is implemented photographic fixing by heating to the toner picture on the paper P that has been implemented transfer process by image forming part 13 and is handled, and its inside comprises: warm-up mill 141, and heating power bodies such as Halogen lamp LED are equipped with in portion within it; And backer roll 142, its periphery is relative with the bottom of warm-up mill 141.Paper P after the transfer process obtains heat by driving warm-up mill 141 and the crack portion of roller core between the backer roll 142 of driven rotation counterclockwise that rotates around roller core to clockwise direction from warm-up mill 141, is implemented photographic fixing and handles.Be implemented the paper P process paper delivery passage 143 after photographic fixing is handled, be discharged to paper delivery portion 15.
Form paper delivery portion 15 by the top depression that makes apparatus main body 11, form paper disc 151, be used to the paper P that accepts to discharge in the concave bottom of this depression.
Fig. 2 is the key diagram of an example of image forming part 13 structures shown in Figure 1 of expression in detail.The inscape of photosensitive drums 20 and the gauge of paper P have been represented in exaggeration in Fig. 2.As shown in Figure 2, photosensitive drums 20 for example comprises: drum axle 21; The aluminum pipe embryo 22 of aluminium alloy system can rotate with one heart around drum axle 21; And amorphous silicon layer 23, utilize stacked equably formation on the periphery of aluminum pipe embryo 22 such as vapor deposition treatment.This photosensitive drums 20 is utilized the driving of drum motor in abridged among the figure, rotates to clockwise direction.
Amorphous silicon layer 23 is the compound (SiC, SiO, SiON etc.) of silicon (Si) or silicon layers with the curing of solid solution shape, generally adopts physical vapor deposition processing formation such as sputter process.This amorphous silicon layer 23 (the particularly layer of SiC system) is because of high resistance has good charged ability, and the anti-wear performance and the performance that conforms, and is suitable as the material that forms electrostatic latent image and toner picture.
Charged roller is connected with charged roller 30 with power supply 33.Charged roller applies according to the direct current electrified voltage Vdc3 that has set magnitude of voltage from the control signal of control part 100 with 33 pairs of charged roller 30 of power supply.
Charged roller 30 is connected to the state on the periphery (being amorphous silicon layer 23) of photosensitive drums 20 with its periphery, being applied on the amorphous silicon layer 23 from the electrified voltage Vdc3 of charged roller with power supply 33, charged roller 30 comprises metal charged roll shaft 31 and the charged roller main body made from insulating material such as resilient materials 32, charged roller main body 32 is outer to be embedded on the charged roll shaft 31, concentric and become one with charged roll shaft 31.
Be applied on the charged roll shaft 31 from the positive voltage of charged roller with power supply 33, form under the state of positive charge on the periphery of charged roller main body 32, follow photosensitive drums 20 to rotate to clockwise direction around bulging 21, charged roller 30 around oneself axle center to driven rotation counterclockwise, the surface potential that makes photosensitive drums 20 forms uniform positive charge for example with the electricity of 400V on amorphous silicon layer 23.
The surface of the even electric charge that 40 pairs of exposure devices are formed on amorphous silicon layer 23 by charged roller 30, irradiation has the laser beam corresponding to the power of the image information of sending, and is going up the electrostatic latent image that the formation positive charge disappears or becomes considerably less around the periphery (amorphous silicon layer 23) of drum axle 21 photosensitive drums of rotating 20 thus.Therefore in Fig. 2,, remove "+" mark of expression positive charge by the periphery of the photosensitive drums 20 of exposure device 40 irradiations.
Developing apparatus 50 provides toner T on the amorphous silicon layer 23 of the photosensitive drums 20 that has been formed electrostatic latent image by exposure device 40, as S, developing apparatus 50 has: inside is filled with the developing apparatus main body 51 of the box-shaped of toner to toner that should electrostatic latent image in formation; And being installed in developer roll 52 in the developing apparatus main body 51, a part of periphery of developer roll 52 exposes from developing apparatus main body 51.Developing apparatus 50 is by being filled in toner T in the developing apparatus main body 51 (in Fig. 2 for being with "+" number in the circle, expression toner T), periphery from the developer roll 52 that rotating around the axle center parallel with the drum axle 21 of photosensitive drums 20, offer around drum axle 21 amorphous silicon layer of rotating 23, on the surface of amorphous silicon layer 23, form toner thus as S.
In developing apparatus main body 51 on the wall relative with the periphery of photosensitive drums 20, setting provides toner opening 511, be used for the toner T in the developing apparatus main body 51 is transferred to the periphery of photosensitive drums 20, toner T in the developing apparatus main body 51 provides toner opening 511 by this, offers the periphery of photosensitive drums 20 along with the rotation of developer roll 52.
Developer roll 52 comprises: the development roll shaft 521 that does not rotate, with drum axle 21 configured in parallel; Fixed magnet 523 is embedded in outward on the development roll shaft 521, and is concentric and become one with development roll shaft 521; And development sleeve 522, be embedded in outward on the fixed magnet 523, drive around development roll shaft 521 and rotate.Development sleeve 522 is made by metal, electroconductive resins etc. such as SUS (stainless steel) or aluminium.
On described developer roll 52, be in series with and develop with AC power 531 and development direct supply 532.Develop and export respectively according to the alternating voltage Vac1 and the DC voltage Vdc1 that have set magnitude of voltage from the control signal of control part 100 with direct supply 532 with AC power 531 and development.And the developing voltage V1 obtaining after superposeing with the DC voltage Vdc1 of direct supply 532 outputs and the alternating voltage Vac1 that exports with AC power 531 from developing from developing applies on developer roll 52.For example alternating voltage Vac1 is set at AC1.5kV, 3.5kHz, Vdc1 is set at DC300V DC voltage.
And, by the developing voltage V1 after DC voltage Vdc1 and the alternating voltage Vac1 stack is applied on developer roll 52, make the periphery positively charged of development sleeve 522, and by abridged developer roll among the figure with the driving of motor, development sleeve 522 rotates to counter clockwise direction around development roll shaft 521, make the toner T positively charged in the developing apparatus main body 51 thus, offer the amorphous silicon layer 23 of photosensitive drums 20.
Provide the toner opening 511 upper edge in developing apparatus main body 51, be provided with toner layer limiting scraper 54, be used for rotation along with development sleeve 522, the gauge that the toner T that provides to photosensitive drums 20 from the periphery of development sleeve 522 is provided evenly and be the level of regulation, by making toner T bore this toner layer limiting scraper 54, can prevent the surplus supply of toner T to photosensitive drums 20.In the present embodiment, the gap size (at interval) with this toner layer limiting scraper 54 and development sleeve 522 is set at 100 μ m.
Toner on the periphery of photosensitive drums 20 is given and be formed on to transfer roll 60 as the polarity (being negative polarity in the present embodiment) of the opposite polarity of S, thus toner is peeled off from amorphous silicon layer 23 as S, and this toner of peeling off is transferred on the periphery and the paper P between the amorphous silicon layer 23 that is transported to transfer roll 60 as S.
Transfer printing is connected with transfer roll 60 with direct supply 632.The DC voltage Vdc2 of magnitude of voltage has been set in transfer printing from the control signal of control part 100 with direct supply 632 output bases.And applying to transfer roll 60 from the DC voltage Vdc2 that is the transfer voltage V2 of transfer printing with direct supply 632 outputs.For example DC voltage Vdc2 is set at DC-3kV, transfer voltage V2 is a negative polarity.
Transfer roll 60 comprises: transfer printing roll shaft 61, and parallel with the drum axle 21 of photosensitive drums 20; And transfer roll main body 62, be embedded in outward on the transfer printing roll shaft 61, can be with transfer printing roll shaft 61 concentric and rotate integratedly.Transfer roll 60 is applied in from the negative transfer voltage V2 of transfer printing with direct supply 632.Therefore by the state of paper P with the periphery that is adjacent to transfer roll main body 62, between the amorphous silicon layer 23 of this transfer roll main body 62 and photosensitive drums 20, carry, the toner that constitutes by the toner T of positively charged as S by surface one side of Electrostatic Absorption, thus being transferred on the paper P as S at the toner that forms on the periphery of photosensitive drums 20 to electronegative paper P.
Cleaning device 70 is used to remove the amorphous silicon layer 23 lip-deep toners of photosensitive drums 20 are transferred to the remaining toner T1 that remains in after paper P goes up on the amorphous silicon layer 23 as S.This cleaning device 70 comprises: clearer 72, be installed in the bottom in the cleaning device main body 71 of box-shaped, and the periphery of clearer 72 is connected on the periphery (amorphous silicon layer 23) of photosensitive drums 20; And cleaning balde 73, being installed in the top in the cleaning device main body 71, the front end of cleaning balde 73 is connected on the periphery of photosensitive drums 20.
Clearer 72 is around integrally formed with one heart with bulging 21 parallel roll shaft.This clearer 72 can produce elastic deformation, and is made by the synthetic resin material with good obdurability.
This clearer 72 is with the peripheral speed faster than the peripheral speed of photosensitive drums 20, rotate to the direction opposite (being counterclockwise in example shown in Figure 2) around roll shaft with photosensitive drums 20, with amorphous silicon layer 23 mantle frictions, remove attachments such as corona product thus, make its cleaning.
Cleaning balde 73 is members of finishing the periphery cleaning of photosensitive drums 20, is the tabular component of being made by the rubber elastomeric material.This cleaning balde 73 is installed in the upper position in the cleaning device main body 71, and its front end is downward-sloping towards the amorphous silicon layer 23 of the periphery of photosensitive drums 20, and the scraper plate sword 731 of front end is connected on the amorphous silicon layer 23 with the state that some elastic deformations are arranged.Therefore along with photosensitive drums 20 is rotated to clockwise direction,, wipe the remaining toner T1 that fails to remove with clearer 72 off from arriving on the amorphous silicon layer 23 of scraper plate sword 731 by clearer 72.
With the remaining toner T1 on the amorphous silicon layer 23 of clearer 72 and cleaning balde 73 removals, be imported into interim storage in the cleaning device main body 71, then by the driving of conveying device of regulation, be recovered among the figure that is arranged in the apparatus main body 11 (Fig. 1) in the returnable bottle of abridged.
In addition, photosensitive drums 20, exposure device 40, developing apparatus 50, cleaning device 70 for example can make whole plug-type processing plug-in unit (processcartridge) respectively as the unit that can install and remove.
Fig. 3 is the block diagram of an example of expression image processing system 1 electric structure shown in Figure 1.Constituting respectively the handling in the plug-in unit of photosensitive drums 20, exposure device 40, developing apparatus 50, cleaning device 70, be respectively arranged with EEPROM (Electrically Erasable Read Only Memory).EEPROM has 12C (internal integrated circuit, Inter Integrated Circuit) EEPROM of the serial communication interface of mode, respectively storage respectively handle plug-in unit manufacturing sequence number, this processings plug-in unit kind or utilize this processings plug-in unit to carry out the various information of relevant each processing plug-in units such as number of times of image formation.
PERCOM peripheral communication I/F portion 111 is for example by LAN (LAN (Local Area Network)) or USB (USB (universal serial bus), Universal Serial Bus) etc. transmit passage 110, be connected with external unit such as personal computer, be used for and external unit between receive or send the interface circuit of signal of communication.PERCOM peripheral communication I/F portion 111 becomes the signals of communication that can receive with external unit to the data-switching from control part 100, and for example view data etc. is converted to the data of control part 100 manageable forms from the signal of communication of external unit.Paper delivery section 120 is to carry mechanism of paper, and it comprises that pickup roller 122, paper supply passage 123, alignment roller are to 124 and paper delivery passage 143 etc.
Control part 100 is control circuits, according to the view data that sends to PERCOM peripheral communication I/F portion 111 from the external units such as personal computer that connected by transmission passage 110, control paper delivery section 120, charged roller 30, charged roller power supply 33, exposure device 40, developing apparatus 50, develop, develop and use direct supply 532, transfer roll 60, the transfer printing action of direct supply 632, cleaning device 70 and fixing device 14, carry out image and form with AC power 531.
Control part 100 for example comprises: CPU (central processing unit), the calculation process that puts rules into practice; Non-volatile ROM (ROM (read-only memory)), the control program of store predetermined; RAM (random access memory), temporary storaging data; With and peripheral circuit etc.Control part 100 for example is stored in control program among the ROM by execution, control paper delivery section 120, charged roller 30, charged roller with power supply 33, exposure device 40, developing apparatus 50, develop with AC power 531, develop with the action of direct supply 532, transfer roll 60, transfer printing with direct supply 632, cleaning device 70 and fixing device 14.
On the basis of said structure, control part 100 for example is stored in control program among the ROM by execution, has the function that forms control part 105, guide portion 106 and evaluation portion 107 as image data acquisition portion 101, barcode detection portion 102, image forming conditions configuration part 103, table storage part 104, image.
Image data acquisition portion 101 obtains to read view data that action obtains and the view data from external unit that is received by PERCOM peripheral communication I/F portion 111 by manuscript reading section 802.
Barcode detection portion 102 detects whether comprise the view data of representing bar code in the view data of being obtained by image data acquisition portion 101.Detecting whether comprise the view data of representing bar code, is to be undertaken by detect the instruction that has or not the expression bar code to exist in this view data.In the present embodiment, take the bar code that constitutes by informal voucher and secret note, but the invention is not restricted to this, also go for the bar code that the bar by different multiple colors constitutes.
When the paper carries out image was formed action, image forming conditions was set according to the view data of being obtained by image data acquisition portion 101 in image forming conditions configuration part 103.
The point that wherein should note is: for the image that improves bar code forms precision, preestablish the image forming conditions when according to the view data of bar code the paper carries out image being formed action, this image forming conditions is different from the image forming conditions when according to the view data beyond the bar code paper carries out image being formed action (common image forms action).
In the present embodiment, for example in order to improve the evaluation result of ANSI (American National Standards Institute (ANSI)), set the parameter parameter of picture quality (decision) of following parameter, that is: the DC voltage Vdc1 that exports with direct supply 532 from described development (below be called the development bias voltage) as the described image forming conditions of decision, from described development with the frequency of the alternating voltage Vac1 of AC power 531 output (below be called the development frequency) and according to from described transfer printing with the DC voltage Vdc2 of direct supply 632 outputs from the electric current of transfer roll 60 outflows (below be called the transfer printing electric current).
These parameters are for example set according to the printing specification of the bar code of ANSI regulation.That is, the assessment item of this ANSI for example comprises: the light reflectivity of come off (damaged), the bar of toner splash (state that has also adhered to toner in part (white part) that should not adhering toner), bar (parameter that is inversely proportional to toner concentration) etc.Toner splash situation changes according to development frequency or transfer printing current value, by increasing development frequency or transfer printing electric current, can suppress to produce the toner splash.In addition, bar come off that dosage is few causes because of toning, so, can suppress to produce coming off of bar by increasing development bias voltage (DC voltage) or reducing the surface potential of photosensitive drums 20.In addition, light reflectivity at informal voucher low (toner concentration height), produce to cover under the situation of (phenomenon of also adhering to toner corresponding to the position of blank sheet of paper part), reduce the dosage of mixing colours by the surface potential that reduces to develop bias voltage or improve photosensitive drums 20, can make light reflectivity uprise (toner concentration step-down), on the contrary, under the situation of the light reflectivity height (toner concentration is low) of secret note, increase toning dosage by the surface potential that increases development bias voltage or reduction photosensitive drums 20, can make light reflectivity step-down (toner concentration uprises).
In addition, except these assessment items, for example also has contrast (size that the view data of the boundary member of secret note and informal voucher (arrow D, E shown in Fig. 7 B described later) changes).By increasing the transfer printing electric current or increasing the development frequency or make the development bias voltage and the combination optimization of the surface potential of photosensitive drums 20, can improve contrast.
Table storage part 104 (image forming conditions storage part) is stored described image forming conditions in advance with sheet form.Fig. 4 is the figure that is illustrated in an example of the image forming conditions table of storage in the storage part 104.Fig. 4 represents the image forming conditions table from described each parameter of described image forming conditions the surface potential of development frequency and photosensitive drums 20 set as parameter.
In table shown in Figure 4, set three kinds of image forming conditions, that is: development frequency is that the surface potential of α (kHz), photosensitive drums 20 is the image forming conditions (below be called image forming conditions 1) of β (V); The development frequency is that the surface potential of (α-3) kHz, photosensitive drums 20 is the image forming conditions of (β+10) V (below be called image forming conditions 2); And the development frequency is that the surface potential of (α-6) kHz, photosensitive drums 20 is the image forming conditions of (β+20) V (below be called image forming conditions 3).But, image forming conditions is not limited to described image forming conditions 1～3.Wherein form action, be fit to adopt image forming conditions 1 for the image that carries out according to the common view data beyond the bar code.
When bar code key 801 was pressed and accepted the indication of carries out image formation condition setting processing, then the bar code pattern was transferred in image forming conditions configuration part 103, begins to carry out image forming conditions described later and sets processing.
On the other hand, be not pressed at bar code key 801, promptly do not accept the carries out image formation condition and set under the situation of the indication of handling, then image forming conditions configuration part 103 is set at image forming conditions in following image forming conditions 1 that is fit to common image of normal mode.
The image forming conditions of image forming conditions configuration part 103 in the bar code pattern set and is treated to: do not comprise the view data of representing bar code when being judged by barcode detection portion 102 in the view data of being obtained by image data acquisition portion 101, and this view data is when being view data (for example text image data or picture image data) beyond the bar code, the for example image forming conditions 1 that is stored in the image forming conditions table of table in the storage part 104 is read in image forming conditions configuration part 103, this image forming conditions 1 is set at according to described view data carries out the image forming conditions of image when forming action.
On the other hand, when judging by barcode detection portion 102 when comprising the view data of representing bar code in the view data of obtaining by image data acquisition portion 101, image forming conditions configuration part 103 is set at image forming conditions as follows: on described throughput direction the face that is recorded of described paper is divided into first scope that there is bar code and second scope in addition, in this case, image forming conditions configuration part 103 is set at described image forming conditions 2 or 3 according to first view data that forms image in described first scope carries out the image forming conditions of image when forming action, and described image forming conditions 1 is set at carries out image according to second view data that forms image in described second scope and form image forming conditions when moving.
Promptly, as shown in Figure 5, when the paper of carrying to the direction of arrow X as printing medium, forming under the situation of image from the end of position L1 to the end of position L4 on this paper, image forming conditions configuration part 103 is for (the zone of representing with arrow A in the zone from the position L1 on this paper to position L2; Be equivalent to described second scope) carry out the view data that image forms, set described image forming conditions 1; For (the zone of representing with arrow C in zone from position L2 to position L3; Be equivalent to described first scope) carry out the view data that image forms, set described image forming conditions 2 or 3; For (the zone of representing with arrow B in zone from position L3 to position L4; Be equivalent to described second scope) carry out the view data that image forms, set described image forming conditions 1.
Image forms control part 105 makes image forming part 13 come carries out image to form action according to the image forming conditions of being set by image forming conditions configuration part 103.That is, when not comprising the view data of representing bar code in the view data of being obtained by image data acquisition portion 101, image forms control part 105 makes image forming part 13 carry out image formation action according to described image forming conditions 1.
In addition, when comprising the view data of representing bar code in the view data of being obtained by image data acquisition portion 101, image forms control part 105 makes described image forming part 13 carry out image formation action shown in Figure 5.
Specifically, as shown in Figure 5, image forms control part 105 and makes described image forming part 13 come the zone from position L1 to position L2 on the paper that subtend arrow directions X carries (zone of representing with arrow A) to carry out image according to described image forming conditions 1 to form action, image forming conditions when afterwards described image forming part 13 being carried out image formation action, switch to image forming conditions 2 or 3 from described image forming conditions 1, and make described image forming part 13 carry out image to the zone from position L2 to position L3 (zone of representing with arrow C) to form action according to described image forming conditions 2 or 3, after this, image forming conditions when described image forming part 13 is carried out image formation action, switch to image forming conditions 1 from described image forming conditions 2 or 3 again, and make described image forming part 13 carry out image to the zone from position L3 to position L4 (zone of representing with arrow B) to form action according to described image forming conditions 1.
If in the view data of obtaining by image data acquisition portion 101, comprise under the situation of the view data of representing bar code, image formation action has been carried out in the indication that forms control part 105 according to image on paper, then as shown in Figure 6, guide portion 106 shows guide picture, and the guiding user allows manuscript reading section 802 read the image of this paper.
Evaluation portion 107 carries out the image quality evaluation to the view data that reads the bar code that action obtains by manuscript reading section 802 after showing described guide picture.Fig. 7 A is the enlarged drawing that reads a part of bar in the bar code that action obtains by manuscript reading section 802 after showing described guide picture.
If after showing described guide picture, read action, then can obtain for example curve of the view data shown in Fig. 7 B for for example bar code shown in Fig. 7 A by manuscript reading section 802.Evaluation portion 107 carries out image quality evaluation (for example representing with score) according to the curve shown in Fig. 7 B to the view data of the bar code shown in Fig. 7 A.
Evaluation portion 107 is for the view data of described bar code, carries out about the coming off of described toner splash, bar, the light reflectivity of secret note (black-tape part) and the contrast evaluation of secret note and informal voucher (leukorrhea part).When the evaluation of estimate of representing described each parameter (the coming off of toner splash, secret note, light reflectivity and contrast) respectively is bigger than the threshold value of predesignating, promptly, be less than light reflectivity that coming off of ormal weight, secret note be less than specified states, secret note in proper range and under the state of variation in the view data of the boundary member of secret note and informal voucher in the toner splash greater than setting, evaluation portion 107 is evaluated as and has formed the bar code image with regulation image quality, on the other hand, be not in this case, then being evaluated as does not have to form the bar code image with regulation image quality.
Specifically, the picture pattern number of the stain shape that evaluation portion 107 for example partly comprises the leukorrhea in bar code image is added up as toner splash number, sets the evaluation of estimate of expression toner splash, makes the big more evaluation of estimate of described statistical value low more.In addition, the picture pattern number of the white point shape that evaluation portion 107 for example partly comprises black-tape in bar code image is added up as (damaged) number that comes off of secret note, sets the evaluation of estimate that comes off of expression secret note, makes the big more evaluation of estimate of described statistical value low more.
In addition, evaluation portion 107 for example sets the evaluation of estimate of the secret note light reflectivity in the bar code image, perhaps set the evaluation of estimate of contrast value of poor (size of variation) of concentration value of the boundary member view data of expression secret note and informal voucher, make the central value of the approaching more predefined proper range of value of described light reflectivity or contrast, evaluation of estimate is high more, or more away from the central value of this proper range, evaluation of estimate is low more.
And whether evaluation portion 107 surpasses pre-set threshold according to these evaluations of estimate, has judged whether to form described bar code image with regulation image quality.
If be not evaluated as by evaluation portion 107 and can not form the bar code image with regulation image quality, then described image forming conditions configuration part 103 changes according to the view data of the barcode size or text field and carries out the image forming conditions of image when forming action.If changed image forming conditions by described image forming conditions configuration part 103, then image forms the image forming conditions carries out image formation action after control part 105 makes image forming part 13 according to this change, guide portion 106 shows guide picture, the guiding user allows manuscript reading section 802 read by described image and forms image on the paper that action obtains, evaluation portion 107 to the bar code image data that action obtains that read by manuscript reading section 802, carries out the image quality evaluation again after showing described guide picture.
Image forming conditions configuration part 103, image form control part 105, guide portion 106 and evaluation portion 107 and carry out described processing repeatedly, until by evaluation portion 107 be evaluated as formed bar code with regulation image quality till.In a plurality of image forming conditions from be stored in table storage part 104, set the image forming conditions of the most suitable formation bar code image thus.
Fig. 8 is the process flow diagram of an example of expression image processing system shown in Figure 11 action.Fig. 9 is the process flow diagram that expression control part 100 carries out the image forming conditions setting processing of bar code.Wherein, about image forming conditions, in advance described image forming conditions 1 is set at initial setting.
At first, (being "Yes" in step #101) is pressed at bar code key 801, promptly accepting the carries out image formation condition by bar code key 801 sets under the situation of the indication of handling, if initiating key 805 is pressed (being "Yes" in step #102), then the bar code pattern is transferred in image forming conditions configuration part 103, begin to read original image (step #103) by manuscript reading section 802, and transfer to step #1, beginning carries out image formation condition is set and is handled.
On the other hand, (being "No" in step #101) is not pressed at bar code key 801, be that bar code key 801 is not accepted under the situation of the indication that the carries out image formation condition set to handle, if initiating key 805 is pressed (being "Yes" in step #104), then image forming conditions configuration part 103 is as normal mode, begin to read original image (step #105) by manuscript reading section 802, and the step #3 that transfers to, form with image forming conditions 1 carries out image that is fit to common image.
Secondly, set in the processing in image forming conditions shown in Figure 9, if control part 100 (image data acquisition portion 101) gets access to the view data (being "Yes" in step #1) that is read by manuscript reading section 802, then barcode detection portion 102 judges whether comprise the view data (step #2) of representing bar code in this view data, (in step #2, be "No") under the situation about not comprising, image forming conditions 1 is set in image forming conditions configuration part 103, and image forms control part 105 makes image forming part 13 form action (step #3) according to this image forming conditions 1 carries out image.
On the other hand, in step #2, if in the view data that image data acquisition portion 101 obtains, comprise the view data (in step #2, being "Yes") of representing bar code, then as illustrated in fig. 5, on described throughput direction, the face that is recorded of described paper is divided into first scope that there is bar code (being equivalent to the zone shown in the arrow C of Fig. 5) and the second scope (arrow A that is equivalent to Fig. 5 in addition, zone shown in the B), in this case, image forming conditions configuration part 103 for example is set at described image forming conditions 2 according to first view data that forms image in described first scope carries out the image forming conditions of image when forming action, and described image forming conditions 1 is set at carries out image according to second view data that forms image in described second scope and form image forming conditions (step #4) when moving.Then, image forms control part 105 makes described image forming part 13 according to the image forming conditions of setting in step #4, and carries out image forms action (step #5).
Then, control part 100 (guide portion 106) for example utilizes guide picture shown in Figure 6 guiding user, makes manuscript reading section 802 read image by step #5 and forms the image (step #6) that moves on the paper that has formed image.After this, whether control part 100 (guide portion 106) for example presses initiating key 805 grades to the user has been imported and duplicates indication and judge (step #7), do not import under the situation of duplicating indication and (in step #7, be "No") judging the user, judge from beginning guiding whether passed through official hour (step #8) again.
Control part 100 (guide portion 106) is being judged under beginning to guide the situation of having passed through official hour (being "Yes") among step #8, stop a series of processing, on the other hand, judge under beginning to guide the situation of not passing through official hour (being "No") among step #8, turn back to the processing of step #6.
Control part 100 (image forms control part 105) is being indicated (being "Yes" in step #7) if judge through having imported duplicating by the user before the described official hour, then make manuscript reading section 802 and image forming part 13 image forming conditions, carry out and duplicate action (step #9) according to nearest setting.
And control part 100 (evaluation portion 107) carries out the image quality evaluation for the view data that the duplicating action by step #9 obtains, and judges that whether its evaluation of estimate is than described threshold value big (step #10).Control part 100 (evaluation portion 107) (is being "No") if judge described evaluation of estimate below the described threshold value in step #10, then change image forming conditions (step #11) to the barcode size or text field, and turn back to the processing of step #6, execution in step #6～step #10 again.Control part 100 (evaluation portion 107) then finishes a series of processing if judge described evaluation of estimate than described threshold value big (being "Yes" in step #10).
Evaluation portion 107 also can be for example in step #10 compares each evaluation of estimate of the coming off of the splash of expression toner, bar, light reflectivity and contrast respectively with the threshold value that is provided with in each assessment item, all evaluations of estimate all than the big situation of each threshold value under (being "Yes" in step #10), stop a series of processing, perhaps can add up under the situation bigger (being "Yes" in step #10), stop a series of processing in each evaluation of estimate than pre-set threshold.
As mentioned above, set according to the view data of bar code and carried out the image forming conditions of image when forming action, image forming conditions when making this image forming conditions and according to the view data except bar code the paper carries out image being formed action (common image forms action) is different, and when comprising the view data of representing bar code in the view data of obtaining, on described throughput direction, the face that is recorded of described paper is divided into first scope that there is bar code and second scope in addition, in this case, for example described image forming conditions 2 is set at according to the image forming conditions when first view data of described first scope formation image is carried out image formation action, described image forming conditions 1 is set at according to the image forming conditions when second view data of described second scope formation image is carried out image formation action, so can be fit to form the image formation action of bar code image, and carrying out according to the view data beyond the bar code under the situation of image formation action, compare when carrying out the image forming conditions of image when forming action with adopting, can carry out being more suitable for forming bar code and forming action with the image of the image of exterior domain according to the bar code image data.Its result can carry out image and form action, so can form the image of high-quality respectively with the image forming conditions of suitable bar code image and the image forming conditions of the image beyond the suitable bar code.
The present invention also can substitute the above embodiment, perhaps adopts following mode of texturing on above-mentioned embodiment basis.
[1] may not need to carry out the processing of the step #6～step #11 in the process flow diagram shown in Figure 9, the present invention also comprises the mode that the image forming conditions of the suitable formation of setting bar code image reaches the image forming conditions setting processing of the image forming conditions that is fit to formation bar code image in addition of only carrying out once, in this case, also can the be improved image of the image beyond bar code and the bar code forms the effect of precision.But carry out the processing of described step #6～step #11, set the mode of handling and compare with only carrying out once described image forming conditions, the image that can further improve bar code etc. forms precision.
[2] in said embodiment, with the example of paper as printing medium, but printing medium is not limited to paper, for example also comprises surface, cloth, jar of electronic components such as substrate etc.
[3] the image forming conditions configuration part may not be divided into first scope and second scope in addition to 1 page, also can judge whether to comprise bar code to per 1 page of view data, for the page or leaf that does not comprise bar code, first image forming conditions is set at image forming conditions, page or leaf for comprising bar code is set at image forming conditions to second image forming conditions.

Claims (18)

1. image processing system is characterized in that comprising:
Image forming part, adopt electrophotographic method, form image on the face being recorded of printing medium of carrying to the throughput direction of regulation, described electrophotographic method is, utilize toner that the electrostatic latent image of presentation video is developed, obtain the toner picture, and this toner is looked like to carry out the method that transfer printing forms image;
Image data acquisition portion obtains view data;
The image forming conditions storage part is stored in advance as different first image forming conditions and second image forming conditions described electrophotographic method condition, mutual;
The image forming conditions configuration part, carry out image forming conditions and set processing, when not comprising the data of representing bar code in the view data of obtaining by described image data acquisition portion, set described first image forming conditions as carry out the image forming conditions of image when forming action according to this view data, when comprising the view data of representing bar code in the view data of obtaining by described image data acquisition portion, on described throughput direction, the described face that is recorded is divided into first scope that there is bar code and second scope in addition, set described second image forming conditions as carry out the image forming conditions of image when forming action according to first view data that forms image in described first scope, set described first image forming conditions as carry out the image forming conditions of image when forming action according to second view data that forms image in described second scope; And
Image forms control part, and the image that described image forming part is carried out based on the view data of being obtained by described image data acquisition portion according to the image forming conditions of being set by described image forming conditions configuration part forms action.
2. image processing system according to claim 1 is characterized in that,
Described image forming part has developer roll, and this developer roll is used to the alternating voltage accepting to be provided, and toner is offered photosensitive drums, and the electrostatic latent image that forms on this photosensitive drum surface is developed,
The frequency values of the alternating voltage of setting in the frequency values of the alternating voltage of setting in described second image forming conditions that described developer roll is applied and described first image forming conditions that described developer roll is applied is different.
3. image processing system according to claim 1 is characterized in that,
Described image forming part has photosensitive drums, forms electrostatic latent image on this photosensitive drum surface,
The surface electrical place value of the described photosensitive drums of setting in the surface electrical place value of the described photosensitive drums of setting in described second image forming conditions and described first image forming conditions is different.
4. image processing system according to claim 1 is characterized in that,
Described image forming part has developer roll, and this developer roll is used to the DC voltage accepting to be provided, and toner is offered photosensitive drums, and the electrostatic latent image that forms on this photosensitive drum surface is developed,
The value of the DC voltage of setting in the value of the DC voltage of setting in described second image forming conditions that described developer roll is applied and described first image forming conditions that described developer roll is applied is different.
5. image processing system according to claim 1 is characterized in that,
Described image forming part comprises:
Photosensitive drums, its surface go up the electrostatic latent image that forms and pass through toner development; And
Transfer roll, when with the described printing medium of described photosensitive drums clamping, the opposite polarity polarity that is developed in the toner of the toner picture on the described photosensitive drum surface by handle and formation is given described printing medium, and described toner is transferred on the described printing medium
The value of the transfer printing electric current of setting in the value of the transfer printing electric current of setting in described second image forming conditions that offers described transfer roll and described first image forming conditions that offers described transfer roll is different.
6. image processing system according to claim 1 is characterized in that,
Described printing medium is the thin slice body of sheet,
Described image processing system also comprises:
Manuscript reading section reads the image of original copy;
Guide portion, the thin slice body that guides the user will form image according to the indication of described image formation control part offers described manuscript reading section and reads action; And
Evaluation portion, to by after the described guide portion channeling conduct by described manuscript reading section read the view data that obtains of action, carry out the image quality evaluation,
Described image forming conditions configuration part changes described second image forming conditions when not from evaluation that described evaluation portion obtains stipulating, to improve the evaluation of described evaluation portion.
7. image processing system according to claim 6 is characterized in that,
Described image forming part has developer roll, and this developer roll is used to the alternating voltage accepting to be provided, and toner is offered photosensitive drums, and the electrostatic latent image that forms on this photosensitive drum surface is developed,
The frequency of the described alternating voltage of setting respectively in described first image forming conditions and second image forming conditions is mutually different value,
Described evaluation portion estimates toner splash state,
Described image forming conditions configuration part during not from evaluation that described evaluation portion obtains stipulating, changes described second image forming conditions when more than the state of predesignating because of the toner splash, and the frequency of described alternating voltage is increased.
8. image processing system according to claim 6 is characterized in that,
Described image forming part has developer roll, and this developer roll is used to the alternating voltage accepting to be provided, and toner is offered photosensitive drums, and the electrostatic latent image that forms on this photosensitive drum surface is developed,
The frequency of the described alternating voltage of setting respectively in described first image forming conditions and second image forming conditions is mutually different value,
Described evaluation portion estimates contrast, and this contrast represents that the view data of two bar boundary members of adjacent different colours changes size,
Described image forming conditions configuration part when not obtaining the evaluation of described regulation, changes the frequency of the described alternating voltage of setting in described second image forming conditions when because of described contrast is littler than the state of predesignating.
9. image processing system according to claim 6 is characterized in that,
Described image forming part has photosensitive drums, forms electrostatic latent image on this photosensitive drum surface,
The surface electrical place value of the described photosensitive drums of setting respectively in described first image forming conditions and second image forming conditions is different,
Described evaluation portion estimates the damage condition of bar,
Described image forming conditions configuration part when not obtaining the evaluation of described regulation, changes described second image forming conditions when more serious than the state of predesignating because of described damage condition, and the surface potential of described photosensitive drums is reduced.
10. image processing system according to claim 6 is characterized in that,
Described image forming part has photosensitive drums, forms electrostatic latent image on this photosensitive drum surface,
The surface potential of the described photosensitive drums of setting respectively in described first image forming conditions and second image forming conditions is mutually different value,
Described evaluation portion estimates the light reflectivity of the bar that constitutes described bar code,
Described image forming conditions configuration part when not obtaining the evaluation of described regulation, changes described second image forming conditions when because of described light reflectivity is lower than the state of predesignating, and the surface potential of described photosensitive drums is increased.
11. image processing system according to claim 6 is characterized in that,
Described image forming part has photosensitive drums, forms electrostatic latent image on this photosensitive drum surface,
The surface electrical place value of the described photosensitive drums of setting respectively in described first image forming conditions and second image forming conditions is different,
Described evaluation portion estimates contrast, and this contrast represents that the view data of two bar boundary members of adjacent different colours changes size,
Described image forming conditions configuration part when not obtaining the evaluation of described regulation, changes the surface potential of described photosensitive drums when because of described contrast is littler than the state of predesignating.
12. image processing system according to claim 6 is characterized in that,
Described image forming part has developer roll, and this developer roll is used to the DC voltage accepting to be provided, and toner is offered photosensitive drums, and the electrostatic latent image that forms on this photosensitive drum surface is developed,
The value of the described DC voltage of setting respectively in described first image forming conditions and second image forming conditions is different,
Described evaluation portion estimates the damage condition of bar,
Described image forming conditions configuration part when not obtaining the evaluation of described regulation, changes described second image forming conditions more serious than the state of predesignating because of described damage condition, and described DC voltage is increased.
13. image processing system according to claim 6 is characterized in that,
Described image forming part has developer roll, and this developer roll is used to the DC voltage accepting to be provided, and toner is offered photosensitive drums, and the electrostatic latent image that forms on this photosensitive drum surface is developed,
The value of the described DC voltage of setting respectively in described first image forming conditions and second image forming conditions is different,
Described evaluation portion estimates the light reflectivity of the bar that constitutes described bar code,
Described image forming conditions configuration part when not obtaining the evaluation of described regulation, changes described second image forming conditions when because of described light reflectivity is lower than the state of predesignating, and described DC voltage is reduced.
14. image processing system according to claim 6 is characterized in that,
Described image forming part has developer roll, and this developer roll is used to the DC voltage accepting to be provided, and toner is offered photosensitive drums, and the electrostatic latent image that forms on this photosensitive drum surface is developed,
The value of the described DC voltage of setting respectively in described first image forming conditions and second image forming conditions is different,
Described evaluation portion estimates contrast, and this contrast represents that the view data of two bar boundary members of adjacent different colours changes size,
Described image forming conditions configuration part when not obtaining the evaluation of described regulation, changes the described DC voltage in described second image forming conditions when because of described contrast is littler than the state of predesignating.
15. image processing system according to claim 6 is characterized in that,
Described image forming part comprises:
Photosensitive drums, the electrostatic latent image of Xing Chenging passes through toner development in its surface; And
Transfer roll, when with the described printing medium of described photosensitive drums clamping, the opposite polarity polarity that is developed in the toner of the toner picture on the described photosensitive drum surface by handle and formation is given described printing medium, produce the transfer printing electric current, described toner is transferred on the described printing medium
The value of the described transfer printing electric current of setting respectively in described first image forming conditions and second image forming conditions is different,
Described evaluation portion estimates toner splash state,
Described image forming conditions configuration part is when many than the state of predesignating because of the toner splash, during the evaluation that do not obtain stipulating, changes the described transfer printing electric current of setting in described second image forming conditions, makes described transfer printing electric current increase.
16. image processing system according to claim 6 is characterized in that,
Described image forming part comprises:
Photosensitive drums, the electrostatic latent image of Xing Chenging passes through toner development in its surface; And
Transfer roll, when with the described printing medium of described photosensitive drums clamping, the opposite polarity polarity that is developed in the toner of the toner picture on the described photosensitive drum surface by handle and formation is given described printing medium, produce the transfer printing electric current, described toner is transferred on the described printing medium
The value of the described transfer printing electric current of setting respectively in described first image forming conditions and second image forming conditions is different,
Described evaluation portion estimates contrast, and this contrast represents that the view data of two bar boundary members of adjacent different colours changes size,
Described image forming conditions configuration part when not obtaining the evaluation of described regulation, changes described second image forming conditions when because of described contrast is littler than the state of predesignating, and described transfer printing electric current is increased.
17. image processing system according to claim 1 is characterized in that,
Described image data acquisition portion obtains the multi-page pictures data,
Described image forming conditions configuration part is carried out described image forming conditions and is set processing per 1 page of described view data.
18. image processing system according to claim 1 is characterized in that,
Also comprise the indication receiving portion, accept to carry out described image forming conditions and set the indication of handling,
Described image forming conditions configuration part is under the situation of having been accepted described execution indication by described indication receiving portion, carry out described image forming conditions and set processing, and under the situation of not accepting described execution indication by described indication receiving portion, no matter in the view data of obtaining by described image data acquisition portion, whether comprise the data of represent bar code, all set described first image forming conditions and form the image forming conditions of moving as carry out image according to this view data.
CN2009100051252A 2008-01-17 2009-01-19 Image forming apparatus Expired - Fee Related CN101487995B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5424036B2 (en) * 2009-11-02 2014-02-26 富士ゼロックス株式会社 Image forming apparatus and image forming program
JP5637935B2 (en) * 2010-06-07 2014-12-10 京セラドキュメントソリューションズ株式会社 Image forming apparatus
JP2013130812A (en) * 2011-12-22 2013-07-04 Fuji Xerox Co Ltd Control device, image forming apparatus, image forming system and image forming program
JP6143495B2 (en) * 2013-03-05 2017-06-07 キヤノン株式会社 Image forming apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005219382A (en) * 2004-02-06 2005-08-18 Ishida Co Ltd Label printer, method of printing on label, and label printing program

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07177348A (en) * 1993-12-17 1995-07-14 Ricoh Co Ltd Printer device
JPH11190959A (en) * 1997-12-25 1999-07-13 Toshiba Corp Image forming device
JP2007140545A (en) * 2002-02-20 2007-06-07 Seiko Epson Corp Image forming device and image forming method
JP2004037997A (en) * 2002-07-05 2004-02-05 Ricoh Co Ltd Developing device and image forming apparatus
JP2004069833A (en) * 2002-08-02 2004-03-04 Canon Inc Color image forming apparatus
JP2004345220A (en) * 2003-05-22 2004-12-09 Konica Minolta Business Technologies Inc Image forming device
JP4332376B2 (en) * 2003-06-25 2009-09-16 株式会社リコー Image forming apparatus, image forming apparatus, computer program, and recording medium
JP2005175773A (en) * 2003-12-10 2005-06-30 Ricoh Co Ltd Device and method for forming image
JP4371107B2 (en) * 2005-02-10 2009-11-25 コニカミノルタビジネステクノロジーズ株式会社 Image forming apparatus
JP2006335051A (en) * 2005-06-06 2006-12-14 Murata Mach Ltd Image processing apparatus
JP4923740B2 (en) * 2006-05-31 2012-04-25 富士ゼロックス株式会社 Image processing system, image forming apparatus, and image processing program
JP4785644B2 (en) * 2006-06-26 2011-10-05 株式会社沖データ Printing system and print data processing apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005219382A (en) * 2004-02-06 2005-08-18 Ishida Co Ltd Label printer, method of printing on label, and label printing program

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