CN100418019C - Color image forming apparatus and method of controlling the color image forming apparatus - Google Patents
Color image forming apparatus and method of controlling the color image forming apparatus Download PDFInfo
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- CN100418019C CN100418019C CNB2005100814072A CN200510081407A CN100418019C CN 100418019 C CN100418019 C CN 100418019C CN B2005100814072 A CNB2005100814072 A CN B2005100814072A CN 200510081407 A CN200510081407 A CN 200510081407A CN 100418019 C CN100418019 C CN 100418019C
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Abstract
The present invention relates to a color image forming device and a control method thereof. The color image forming device with a serial type color image forming measure is provided with a sensor which is used for detecting the concentrations of all patterns of each color formed at the conveyer belt of an image carrier with preset interval form. The patterns comprise a linear position excursion detection pattern and a concentration detection pattern. The linear position excursion detection pattern is vertical to the conveying direction of the conveyer belt. The concentration detection pattern forms an area with preset concentration which is sequential with the linear position excursion detection pattern. The sensor detects the detection signals of the linear position excursion detection pattern and the concentration detection pattern and detects the position excursion at the secondary scanning direction and the concentrations of all patterns of each color. The present invention provides the cheap color image forming device which can greatly shorten the time for the user to wait for realizing the position excursion detection adjusting action and the concentration detection adjusting action.
Description
Technical field
The present invention relates to a kind of coloured image and form device and control method thereof, it has the tandem type coloured image and forms means, some colour content images that are used to form the colour content image are formed means, along arranging as mounting body carriage direction, and will form the colour content image that means form by described some colour content images and overlap in turn on the described picture mounting body, on described picture mounting body, form coloured image.
Background technology
In the past, form in the device at coloured image with tandem type coloured image formation means, the colour content of some formation colour content images is formed illustration method, along arranging as mounting body carriage direction, and will form the colour content image that means form by above-mentioned colour content image and overlap in turn on the above-mentioned picture mounting body, on described picture mounting body, form coloured image.
As known technology, for example can enumerate the spy and open 2002-207338 (following brief note is " patent documentation 1 "), the spy opens 2003-186278 communique (following brief note is " patent documentation 2 ").
Form in the device at this coloured image, for the component-part diagram picture of all kinds that prevents to be formed on the transfer paper is offset, every suitable printing number, the detection position is offset, and adjusts the formation position (with reference to patent documentation 1) of each colour content.
Adjust in the action in such offset detection, recording scheduled offset detects and uses pattern on the moving belt of picture mounting body, and the level of the detection signal when reading this offset detection with pattern according to optical sensor changes, the detection position skew.
On the other hand, if the concentration of each colour content coloured image also is offset predetermined CONCENTRATION STATE, the print result that can not obtain expecting then.So, for example, the liquid degree of some concentration values is detected pattern be recorded on the moving belt as the mounting body and read, read the result according to this and adjust record concentration.
Detect the adjustment action owing to use different detection patterns to carry out above-mentioned offset respectively, and concentration detects the adjustment action, therefore, the offset detection is adjusted action and is all carried out occasion with concentration detection adjustment action, there is following problem: for two kinds of different patterns that detect of record on moving belt, the complete process spended time of adjusting action is long, has prolonged user's stand-by period.
Action is adjusted in this offset detection and concentration detects the processing time that occasion is all carried out in the adjustment action in order to shorten, in patent documentation 2, disclose offset detection sensor and concentration detection sensor have been set respectively, in this occasion, owing to increased the quantity of sensor, therefore, improved the cost of device.
Summary of the invention
The present invention puts forward for solving above-mentioned existing in prior technology problem.Its purpose is, provides can shorten offset significantly and detect and adjust that action and concentration detect period of reservation of number when adjusting action and carrying out and cheap coloured image forms device and control method thereof.
To achieve these goals, the present invention proposes following scheme:
(1) a kind of coloured image forms device, comprising:
The tandem type image formation unit forms not homochromy image respectively;
Picture mounting body is used for the image that mounting is formed by described image formation unit, and described image formation unit is along the carriage direction configuration of described picture mounting body;
Transfer printing unit, the superimposed in turn transfer printing of not homochromy image that is used for being formed by described image formation unit is at described picture mounting body;
Wherein, describedly comprise moving belt as the mounting body, described image formation unit on this moving belt along the carriage direction of moving belt, form not homochromy certification mark with predetermined space, described certification mark comprises the offset certification mark of not homochromy straight line and not homochromy concentration certification mark, the offset certification mark of described each straight line extends along the vertical direction of the carriage direction of described moving belt, described each concentration certification mark comprises the zone with predetermined concentration, the offset certification mark adjacency of itself and described each straight line;
Coloured image forms device and further comprises:
At least two sensors are used to detect the offset certification mark and the concentration certification mark of described straight line, output detection signal;
Controller, according to detection signal from described at least two sensors output, carry out and detect action, detect of the offset of the offset certification mark of described straight line along the sub scanning direction of moving belt, described sub scanning direction is equivalent to the carriage direction of moving belt, and the concentration that detects described concentration certification mark.
(2) a kind of coloured image forms device, comprising:
The tandem type image formation unit forms not homochromy image respectively;
Picture mounting body is used for the image that mounting is formed by described image formation unit, and described image formation unit is along the carriage direction configuration of described picture mounting body;
Transfer printing unit, the superimposed in turn transfer printing of not homochromy image that is used for being formed by described image formation unit is at described picture mounting body;
Wherein, describedly comprise moving belt as the mounting body, described image formation unit on this moving belt along the carriage direction of moving belt, form not homochromy certification mark with predetermined space, described certification mark comprises the offset certification mark of not homochromy straight line and not homochromy concentration certification mark, the offset certification mark of described each straight line extends along the tilted direction that becomes predetermined angular with the carriage direction of described moving belt, described each concentration certification mark comprises the zone with predetermined concentration, the offset certification mark adjacency of itself and described each straight line;
Coloured image forms device and further comprises:
At least two sensors are used to detect the offset certification mark and the concentration certification mark of described straight line, output detection signal;
Controller, according to detection signal from described at least two sensors output, carry out and detect action, detect of the offset of the offset certification mark of described straight line along the main scanning direction of moving belt, described main scanning direction is perpendicular to the carriage direction of moving belt, and the concentration that detects described concentration certification mark.
(3) a kind of coloured image forms device, comprising:
The tandem type image formation unit forms not homochromy image respectively;
Picture mounting body is used for the image that mounting is formed by described image formation unit, and described image formation unit is along the carriage direction configuration of described picture mounting body;
Transfer printing unit, the superimposed in turn transfer printing of not homochromy image that is used for being formed by described image formation unit is at described picture mounting body;
Wherein, describedly comprise moving belt as the mounting body, described image formation unit on this moving belt along the carriage direction of moving belt, form not homochromy certification mark with predetermined space, described certification mark comprises the offset certification mark of the first not homochromy straight line, the offset certification mark of the second not homochromy straight line, and not homochromy concentration certification mark, the offset certification mark of described each first straight line extends along the vertical direction of the carriage direction of described moving belt, the offset certification mark of described each second straight line extends along the tilted direction that becomes predetermined angular with the carriage direction of described moving belt, described each concentration certification mark comprises the zone with predetermined concentration, and it is formed between the offset certification mark of the offset certification mark of each first straight line and each second straight line;
Coloured image forms device and further comprises:
At least two sensors are used to detect the offset certification mark of described first straight line, the offset certification mark of second straight line, and concentration certification mark, output detection signal;
Controller, according to detection signal from described at least two sensors output, carry out and detect action, detect of the offset of the offset certification mark of described first straight line along the sub scanning direction of moving belt, described sub scanning direction is equivalent to the carriage direction of moving belt, detect the offset of the offset certification mark of described second straight line along the main scanning direction of moving belt, described main scanning direction is perpendicular to the carriage direction of moving belt, and the concentration that detects described concentration certification mark.
(4) any described coloured image forms in the device in (1)-(3), it is characterized in that described image formation unit forms some groups of not homochromy certification marks, and each group comprises the certification mark that all are not homochromy.
(5) form in the device at (4) described coloured image, it is characterized in that each is organized certification mark and comprises the concentration certification mark, it comprises the zone with predetermined concentration, the concentration difference in the described zone of each group.
(6) any described coloured image forms in the device in (1)-(3), it is characterized in that the described transfer paper that is positioned on the described moving belt that comprises as the mounting body.
(7) a kind of coloured image forms the control method of device, forms not homochromy image, and the image that this is not homochromy is superimposed in turn to be transferred on the picture mounting body, and this control method comprises:
On the moving belt of picture mounting body along the carriage direction of moving belt, form not homochromy certification mark with predetermined space, described certification mark comprises the offset certification mark of not homochromy straight line and not homochromy concentration certification mark, the offset certification mark of described each straight line extends along the vertical direction of the carriage direction of described moving belt, described each concentration certification mark comprises the zone with predetermined concentration, the offset certification mark adjacency of itself and described each straight line;
Detect the offset certification mark and the concentration certification mark of described straight line, output detection signal;
Detection signal according to described output, carry out and detect action, detect the offset of the offset certification mark of described straight line along the sub scanning direction of moving belt, described sub scanning direction is equivalent to the carriage direction of moving belt, and the concentration that detects described concentration certification mark.
(8) a kind of coloured image forms the control method of device, forms not homochromy image, and the image that this is not homochromy is superimposed in turn to be transferred on the picture mounting body, and this control method comprises:
On the moving belt of picture mounting body along the carriage direction of moving belt, form not homochromy certification mark with predetermined space, described certification mark comprises the offset certification mark of not homochromy straight line and not homochromy concentration certification mark, the offset certification mark of described each straight line extends along the tilted direction that becomes predetermined angular with the carriage direction of described moving belt, described each concentration certification mark comprises the zone with predetermined concentration, the offset certification mark adjacency of itself and described each straight line;
Detect the offset certification mark and the concentration certification mark of described straight line, output detection signal;
Detection signal according to described output, carry out and detect action, detect the offset of the offset certification mark of described straight line along the main scanning direction of moving belt, described main scanning direction is perpendicular to the carriage direction of moving belt, and the concentration that detects described concentration certification mark.
(9) a kind of coloured image forms the control method of device, forms not homochromy image, and the image that this is not homochromy is superimposed in turn to be transferred on the picture mounting body, and this control method comprises:
On the moving belt of picture mounting body along the carriage direction of moving belt, form not homochromy certification mark with predetermined space, described certification mark comprises the offset certification mark of the first not homochromy straight line, the offset certification mark of the second not homochromy straight line, and not homochromy concentration certification mark, the offset certification mark of described each first straight line extends along the vertical direction of the carriage direction of described moving belt, the offset certification mark of described each second straight line extends along the tilted direction that becomes predetermined angular with the carriage direction of described moving belt, described each concentration certification mark comprises the zone with predetermined concentration, and it is formed between the offset certification mark of the offset certification mark of each first straight line and each second straight line;
Detect the offset certification mark of described first straight line, the offset certification mark of second straight line, and concentration certification mark, output detection signal;
Detection signal according to described output, carry out and detect action, detect of the offset of the offset certification mark of described first straight line along the sub scanning direction of moving belt, described sub scanning direction is equivalent to the carriage direction of moving belt, detect of the offset of the offset certification mark of described second straight line along the main scanning direction of moving belt, described main scanning direction is perpendicular to the carriage direction of moving belt, and the concentration that detects described concentration certification mark.
(10) any described coloured image forms in the control method of device in (7)-(9), it is characterized in that, described formation certification mark step comprises some groups of not homochromy certification marks of formation, and each group comprises the certification mark that all are not homochromy.
(11) coloured image in (10) forms in the control method of device, it is characterized in that each is organized certification mark and comprises the concentration certification mark, and it comprises the zone with predetermined concentration, the concentration difference in the described zone of each group.
(12) any described coloured image forms in the control method of device in (7)-(9), it is characterized in that the described transfer paper that is positioned on the described moving belt that comprises as the mounting body.
Form device and control method thereof according to coloured image of the present invention, realize offset detection pattern and concentration detection pattern, therefore, can shorten offset and detect the time of adjusting action and requiredization of concentration detection adjustment action expense with a kind of detection pattern.
Description of drawings
Fig. 1 is the summary pie graph that the coloured image that relates to of expression one embodiment of the invention forms image formation system one example of device;
Fig. 2 is the synoptic diagram that expression optical sensor 16,17,18 is provided with state one example;
Fig. 3 is the synoptic diagram that is used to illustrate certification mark group one example;
Fig. 4 is synoptic diagram and the figure line that is used to illustrate certification mark one example and optical sensor detection signal one example;
Fig. 5 is the figure line that is used to illustrate the input state;
Fig. 6 is the synoptic diagram that is used to illustrate other example of certification mark group;
Fig. 7 A-C is other example that is used to illustrate certification mark, and the synoptic diagram of the detection of the side-play amount of main scanning direction;
Fig. 8 is the summary pie graph of expression deflection adjusting mechanism one example;
Fig. 9 is the block scheme that the coloured image that relates to of expression one embodiment of the invention forms control system one example of device;
Figure 10 is the block scheme of major part one example of expression sensor drive portion 29 and sensor control part 30;
Figure 11 is that offset detection adjustment processing and the concentration that expression CPU21 carries out detects the process flow diagram that an example is handled in revisal;
Figure 12 is the synoptic diagram of the certification mark that relates to of expression additional embodiments of the present invention;
Figure 13 A-B represents as certification mark group MNa1 MNa2, MNa3, the concrete formation synoptic diagram of the certification mark MN of the key element of MNa4;
Figure 14 is that the sensor output level of optical sensor 16 changes the figure line of an example when being illustrated in the state that detects mark GK;
Figure 15 A-B is the synoptic diagram of the certification mark that relates to of expression the present invention other embodiment;
Figure 16 is that the sensor output level of optical sensor 16 changes the figure line of an example when being illustrated in the state that detects mark GK ';
Figure 17 A-B is the synoptic diagram of the certification mark that relates to of expression the present invention another embodiment.
Embodiment
Below, preferred embodiment that present invention will be described in detail with reference to the accompanying.
Fig. 1 represents an example of the image formation system of the coloured image formation device that one embodiment of the invention relates to.This coloured image forms device and has so-called tandem type coloured image formation means, and the superimposed in turn transfer printing of the image of each colour content is being looked like on the mounting body.In addition, the direct transfer printing of the image of each colour content is on transfer paper.
In Fig. 1, transfer paper 1 is accommodated in the paper feeding cassette 2, and its uppermost part is taken out by pickup roller 3, is sent to photoreceptor belt 6 by transporting roller 4 by guiding parts 5.Photoreceptor belt 6 driven rolls 7 and 8 framves of driven voller by the revolution of driven roller 7, are driven revolution towards arrow R direction.
Above this photoreceptor belt 6, be configured to lower unit downstream in turn from the carriage direction upstream: the magenta color image that is used for the red component-part diagram picture of record forms unit 10, be used to write down the cyan image formation unit 11 of cyan component-part diagram picture, be used to write down the yellow image formation unit 12 of yellow component-part diagram picture, and the black image formation unit 13 that is used to write down the black content image.
In magenta color image forms unit 10, make the surface charging of photoconductor drum 10a by charger 10b, by magenta color image light 14a exposed in its surface by 14 outputs of light writing unit, form the electrostatic latent image corresponding with magenta color image.This electrostatic latent image develops by developer 10c and is toner image, by transfer printing device 10d transfer printing on the surface of the transfer paper 1 that moving belt 6 transports.In addition, finish photoconductor drum 10a surface after the transfer printing, form with the image that is used for next time by cleaning unit 10e cleaning.
Form in the unit 11 at cyan image, make photoconductor drum 11a surface charging, and exposed in its surface, form the electrostatic latent image corresponding with cyan image by cyan image light 14b by 14 outputs of light writing unit by charger 11b.This electrostatic latent image develops by developer 11c and is toner image, by transfer printing device 11d transfer printing on the surface of the transfer paper 1 that moving belt 6 transports.Thus, made on the transfer paper 1 overlapping transfer printing magenta, cyan composition toner image.Finish photoconductor drum 11a surface after the transfer printing by cleaning unit 11e cleaning, form with the image that is used for next time.
Form in the unit 12 at yellow image, make photoconductor drum 12a surface charging, exposed in photoconductor drum 12a surface, form the electrostatic latent image corresponding with yellow image by yellow image light 14d from 14 outputs of light writing unit by charger 12b.This electrostatic latent image develops by developer 12c and is toner image, by transfer printing device 12d transfer printing on the surface of the transfer paper 1 that moving belt 6 transports.Thus, made on the transfer paper 1 overlapping transfer printing magenta, cyan and yellow composition toner image.In addition, the photoconductor drum 12a surface by after the transfer printing of cleaning unit 12e cleaning forms with the image that is used for next time.
Form in the unit 13 at black image, make photoconductor drum 13a surface charging, exposed in photoconductor drum 12a surface, form the electrostatic latent image corresponding with black image by black image light 14c by 14 outputs of light writing unit by charger 13b.This electrostatic latent image develops by developer 13c and is toner image, by transfer printing device 13d transfer printing on the surface that is transported with 6 transfer papers that transport 1.Thus, made on the transfer paper 1 overlapping transfer printing magenta, cyan, yellow and black content toner image, thus on transfer paper 1, finish full-colour image.In addition, the photoconductor drum 13a surface by cleaning unit 13e cleaning is finished transfer printing forms with the image that is used for next time.
Like this, have the transfer paper 1 of full-color toner image to carry out hot photographic fixing by 15 pairs of transfer printings of fuser, the result forms color printing image on the surface of transfer paper 1.
As shown in Figure 2, below photoreceptor belt 6,, set reflection type optical sensor 16,17,18, be used for certification mark (the concrete record) in the back with proper spacing along the vertical direction of carriage direction R.This occasion, optical sensor 17 is arranged on the middle position of the Width of photoreceptor belt 6, and optical sensor 16,18 is separately positioned on the end position near photoreceptor belt 6.In addition, cleaning unit 19 is used to remove mark (the concrete record in the back).
In the present embodiment, for example, be once frequency with 50～100 printed articles, automatically detect and adjust the skew of component-part diagram of all kinds image position, simultaneously, be once frequency with 10～30 printed articles, automatically detect and adjust the action of the concentration of component-part diagram picture of all kinds.These are adjusted action and also can carry out by user's manual operation indication.And during the initial setting when energized moved, the offset detection was adjusted action and is performed with concentration detection adjustment action both.
And, detect in adjustment action and the concentration detection adjustment action in these offsets, use same certification mark, this certification mark one example is represented at Fig. 3.
This certification mark is arranged in the position that optical sensor 16,17,18 can detect respectively, and is parallel with the carriage direction R of moving belt 6, forms 5 groups respectively.That is certification mark group MKa1, MKa2, MKa3, MKa4, the MKa5 corresponding, with optical sensor 16; Certification mark group MKb1, MKb2, MKb3, MKb4, the MKb5 corresponding with optical sensor 17; And certification mark group MKc1, MKc2, MKc3, MKc4, the MKc5 corresponding with optical sensor 18.
Be respectively equipped with line segment shape edge key element and plane key element (the concrete record) by optical sensor 16 detected certification mark group MKa1, MKa2, MKa3, MKa4, MKa5 in the back, described line segment shape edge key element is perpendicular to carriage direction R, be used to detect the offset of sub scanning direction, described plane key element is respectively applied for the concentration that detects yellow, cyan and magenta.In certification mark group MKa1, MKa2, MKa3, MKa4, MKa5, the concentration that forms the plane key element is respectively different values.For example, setting certification mark group MKa1 is 10% concentration, and certification mark group MKa2 is 30% concentration, and certification mark group MKa3 is 50% concentration, and certification mark group MKa4 is 70% concentration, and certification mark group MKa5 is 100% concentration.
Certification mark group MKb1, MKb2, MKb3, MKb4, the MKb5 corresponding with optical sensor 17, and have the certification mark group MKa1 corresponding, MKa2, MKa3, formation that MKa4, MKa5 are identical respectively with optical sensor 16 with corresponding certification mark group MKc1, MKc2, MKc3, MKc4, the MKc5 of optical sensor 18.
Represent detailed formation as the certification mark MK of certification mark group MKa1, MKa2, MKa3, one of MKa4, MKa5 on Fig. 4 top.
Certification mark MK is by density bullet EK, yellow mark EY, and yellow mark NY, cyan mark EC, cyan mark NC, magenta mark EM, magenta mark NM constitutes.Described density bullet EK constitutes line segment shape edge key element, and it is used for the reference position that regulation detects the sub scanning direction offset perpendicular to carriage direction.Form yellow mark EY from density bullet EK every institute's set a distance, it constitutes the line segment key element of and same size parallel with described density bullet EK.It is the square shape on one side that yellow mark NY has with mark EY, is coated with the concentration value that completely described certification mark MK sets in this square shape.Form cyan mark EC from mark NY rearward end every institute's set a distance, it constitutes the line segment key element of and same size parallel with described density bullet EK.It is the square shape on one side that cyan mark NC has with mark EC, is coated with the concentration value that completely described certification mark MK sets in this square shape.Form magenta mark EM from mark NC rearward end every institute's set a distance, it constitutes the line segment key element of and same size parallel with described density bullet EK.It is the square shape on one side that magenta mark NM has with mark EM, is coated with the concentration value that completely described certification mark MK sets in this square shape.
When optical sensor 16 (17,18) read each key element mark EK, EY, NY, EC, NC, EM, the NM of described certification mark MK, the output level of this optical sensor 16 was pressed figure line shown in Fig. 4 bottom and is changed.
That is, when detecting the state of mark EK, its output level is to peak value (waveform SK) that should concentration.When detecting the state of mark EY, its output level is to peak value that should concentration, owing to then detect mark NY, therefore, output level after this is to smooth value (waveform SY) that should mark NY concentration.When detecting the state of mark EC, its output level is to peak value that should concentration, owing to then detect mark NC, therefore, output level after this is to smooth value (waveform SC) that should mark NC concentration.When detecting the state of mark EM, its output level is to peak value that should concentration, owing to then detect mark NM, therefore, its output level is to smooth value (waveform SM) that should mark NM concentration.
Here, judge the output level of optical sensor 16, extract out showing during level is greater than threshold value TH with predetermined threshold TH, with during this period central authorities constantly as detection time of edge key element mark.
For example, as shown in Figure 5, when judging waveform SK level with threshold value TH, TK represents greater than during the threshold value TH, with this period TK central authorities constantly tb be judged as detection time of mark EK.In addition, as mentioned above, the reference position of detecting as the sub scanning direction offset detection time of this mark EK (benchmark constantly) handled.
When optical sensor 16 detects yellow mark EY, NY, judge waveform SY with threshold value TH, during TY represents that level is greater than threshold value TH, with this period TY central authorities constantly ty be judged as detection time of edge key element mark.
And time T by that will be from moment tb to ty constantly is as to the offset detected value of yellow composition along sub scanning direction.
Simultaneously, the flat level LY1 of waveform SY is judged as the detected value of this concentration value of yellow composition.
Equally, when optical sensor 16 detects cyan mark EC, NC, judge waveform SC with threshold value TH, during TC represents that level is greater than threshold value TH, with this period TC central authorities constantly tc be judged as detection time of edge key element mark.
And time T bc that will be from moment tb to tc constantly is as to the offset detected value of cyan composition along sub scanning direction.
Simultaneously, the flat level LC1 of waveform SC is judged as the detected value of this concentration value of cyan composition.
Equally, when optical sensor 16 detects magenta mark EM, NM, judge the waveform SM of its output level of expression with threshold value TH, during TM represents that level is greater than threshold value TH, with this period TM central authorities constantly tm be judged as detection time of edge key element mark.
And, the time T bm from moment tb to moment tm is judged as the offset detected value of magenta composition along sub scanning direction.
Simultaneously, the flat level LM1 of waveform SM is judged as the detected value of this concentration value of magenta composition.
In addition, as mentioned above, a certification mark group comprises 5 groups of certification mark MK.To each certification mark group MK, can obtain the offset detected value along sub scanning direction of 1 yellow composition, 1 cyan composition and 1 magenta composition respectively.Therefore, for a certification mark group,, can obtain the offset detected value along sub scanning direction of 5 yellow compositions, 5 cyan compositions and 5 magenta compositions respectively by above-mentioned detection action.
Therefore, by making the mean value of these 5 detected values, the offset that can get till that time detects the offset detected value of adjusting in the action along sub scanning direction.Like this, owing to use the mean value of plurality of detection value, therefore, improve the precision of detected value.
Sub scanning direction offset detected value is respectively yellow composition, cyan composition and magenta composition, the regulation appropriate value, therefore, this appropriate value and practical measurement value are compared,, do sth. in advance the image formation time when postponing occasion, perhaps when too fast occasion, the image formation time that then slows down by the offset adjustment of such sub scanning direction, can make yellow composition, cyan composition and magenta composition be returned to specified states along the image formation time of sub scanning direction respectively.
Belong to known technology about offset adjustment, omit explanation here along sub scanning direction.
In the above-described embodiments, the offset of sub scanning direction detected to adjust be illustrated,, use to be different from above-mentioned certification mark when the offset of carrying out main scanning direction detects when adjusting.
Certification mark one example of this occasion is with reference to shown in Figure 6.
This certification mark is arranged in the position that optical sensor 16,17,18 can detect respectively, and with the carriage direction assortment abreast of moving belt 6, each forms 5 groups.That is certification mark group MSa1, MSa2, MSa3, MSa4, the MSa5 corresponding, with optical sensor 16; Certification mark group MSb1, MSb2, MSb3, MSb4, the MSb5 corresponding with optical sensor 17; And certification mark group MSc1, MSc2, MSc3, MSc4, the MSc5 corresponding with optical sensor 18.
Be respectively equipped with line segment shape edge key element and plane key element (the concrete record) by optical sensor 16 detected certification mark group MSa1, MSa2, MSa3, MSa4, MSa5 in the back, described line segment shape edge key element is intersected with 45 with carriage direction, be used to detect the offset of main scanning direction, described plane key element is respectively applied for the concentration that detects yellow, cyan and magenta.In certification mark group MSa1, MSa2, MSa3, MSa4, MSa5, the concentration value that forms the plane key element is different respectively, for example: setting certification mark group MSa1 concentration is 10%, setting certification mark group MSa2 concentration is 30%, setting certification mark group MSa3 concentration is 50%, setting certification mark group MSa4 concentration is 70%, and setting certification mark group MSa5 concentration is 100%.
Certification mark group MSb1, MSb2, MSb3, MSb4, the MSb5 corresponding with optical sensor 17, and certification mark group MSc1, MSc2, MSc3, MSc4, the MSc5 corresponding with optical sensor 18, have respectively and the certification mark group MSa1 of corresponding optical sensor 16, MSa2, MSa3, formation that MSa4, MSa5 are identical.
Fig. 7 A represents the detailed formation of a certification mark MS among described certification mark group MSa1, MSa2, MSa3, MSa4, the MSa5.
Certification mark MS is by density bullet FK, yellow flag F Y, and yellow mark GY, cyan flag F C, cyan mark GC, magenta flag F M, magenta mark GM constitutes.Described density bullet FK constitutes line segment shape edge key element, and it is used for the reference position that regulation detects the main scanning direction offset perpendicular to carriage direction.Form yellow flag F Y from density bullet FK every institute's set a distance, it intersects with 45 with carriage direction, constitutes the line segment key element.Yellow mark GY has parallelogram shape, and it is one side with flag F Y, and another side is parallel with carriage direction, is coated with the concentration value that completely described certification mark MS sets in this parallelogram shape.Form cyan flag F C from mark GY rearward end every institute's set a distance, it constitutes the line segment key element of and same size parallel with described yellow flag F Y.Cyan mark GC has parallelogram shape, and it is one side with flag F C, and another side is parallel with carriage direction, is coated with the concentration value that completely described certification mark MS sets in this parallelogram shape.Form magenta flag F M from mark GC rearward end every institute's set a distance, it constitutes the line segment key element of and same size parallel with described yellow flag F Y.Magenta mark GM has parallelogram shape, and it is one side with flag F M, and another side is parallel with carriage direction, is coated with the concentration value that completely described certification mark MS sets in this parallelogram shape.
Fig. 7 B represents the state of the central part of the direction vertical with this certification mark MS carriage direction by optical sensor 16, and Fig. 7 C represents that certification mark MS moves from above-mentioned Fig. 7 B state downwards, and this passes through the state of optical sensor 16 through the certification mark MS of displacement.
Certification mark MS is by under the state of optical sensor 16, and by behind the optical sensor 16, the distance to flag F Y arrival optical sensor 16 is made as LA1 in Fig. 7 B occasion, is made as LA2 in Fig. 7 B occasion from flag F K.In the present embodiment, this distance L A2 is less than distance L A1.
So, by measure respectively detect flag F K from optical sensor 16 after, to detecting flag F Y, FC, required time of FM, can certification mark MS in the offset of the main scanning direction of moving belt 6.Density bullet FK, yellow flag F Y, cyan flag F C, the detection time of magenta flag F M is applicable and above-mentioned with reference to the described density bullet EK of Fig. 5, yellow mark EY, cyan mark EC, the same procedure of the detection time of magenta mark EM is judged detection time of each mark.
According to the yellow image that is detected, cyan image, magenta color image is at the offset detected value of main scanning direction, adopt and the identical method of above-mentioned sub scanning direction offset adjustment action, yellow image, cyan image, magenta color image can be adjusted into normal image formation time in the image formation time of main scanning direction.
The offset method of adjustment of this main scanning direction is a known technology, in this description will be omitted.
In addition, by detecting the skew of main scanning direction and sub scanning direction, can detect crooked (wriggling) state of moving belt 6.For example, such crooked of mechanism's revisal that can be by as shown in Figure 8.This mechanism is included in the light writing unit 14.
In Fig. 8, the image light that laser diode LD output is modulated with view data, this output light is reflected at polygonal mirror PM, behind cylindrical lens CL optically focused, by reflective mirror MM reflection, is incident upon the image writing line WL of photoreceptor belt 6 as image irradiation.
Here, the axle LL of crooked revisal motor MZ and the side of reflective mirror MM join, and be flexible by this LL, and the laterally inclined degree of reflective mirror MM changes.Its result can make the angle of the writing line WL on the photoreceptor belt 6 change, revisal photoreceptor belt 6 crooked.
In addition, in the present embodiment, 3 places on photoreceptor belt 6 Widths (main scanning direction) carry out the offset detection of sub scanning direction and the offset of main scanning direction detects, and therefore, also can carry out the revisal action of sub scanning direction and main scanning direction image multiplying power.This multiplying power revisal action is a known technology, in this description will be omitted.
Fig. 9 represents that the coloured image that one embodiment of the invention relates to forms apparatus control system one example.
In Fig. 9, central processing unit (central processing unit, below brief note is " CPU ") 21 is used to control the action that this coloured image forms the device each several part.ROM (read-only memory) (read onlymemory, below brief note is for " ROM ") 22 is used to store the handling procedure that CPU21 carries out etc.Random access memory (random access memory, below brief note is " RAM ") 23 is used to form the perform region of CPU21.
CPU21, ROM22, RAM23, external interface circuit 24, light write control part 26, transport control part 28, sensor control part 30 and crooked adjustment motor driving part 31 are connected with internal bus 32, the data processing of carrying out between described each one by this internal bus 32.
Figure 10 represents sensor drive portion 29 and sensor control part 30 major parts one example.In this embodiment, only represent the part that optical sensor 16 relates to.In addition, optical sensor 17,18 related parts can realize by identical structure.
In Figure 10, luminous quantity control part 35 is according to the control signal SS1 from CPU21 output, the luminous quantity of control optical sensor 16, optical sensor 16 amplified by amplifier 36 by light signal SK1 after, by low-pass filter (Low-pass filter, below brief note is " LPF ") 37 elimination high frequency noises, send into analog/digital (analog/digital, below brief note is " A/D ") transducer 38.
A/D transducer 38 was taken a sample to the light signal SK1 that is subjected to that imports by the time of sampling control part 39 appointments, it is transformed into corresponding digital signal, digital signal after the conversion is subjected to light signal SK2 by FIFO (first-in and first-out) 40 as numeral, exports to CPU21.
Figure 11 represents that CPU21 carries out offset detection adjustment processing and an example is handled in concentration detection revisal.
At first, whether determining step S101 investigates the offset revisal time, when judged result is "Yes", enters step S102, and treatment step S102 is provided with offset revisal sign (flag), then, enters step S104.When the judged result of determining step S101 is "No", enter step S103, treatment step S103 removes position revisal sign, enters step S104 again.
In described determining step S104, whether investigate the concentration revisal time, when judged result is "Yes", enter step S105, treatment step S105 is provided with concentration revisal sign, then, enters step S107.When the judged result of determining step S104 is "No", enter step S106, treatment step S106 removes concentration revisal sign, enters step S107 again.
In described determining step S107, whether investigation is provided with in offset revisal sign or the concentration revisal sign, and perhaps whether the both is set up, and when judged result is "No", returns step S101.
When the judged result of determining step S107 is "Yes", enter step S108.Treatment step S108 writes down above-mentioned certification mark group.Then, enter step S109, whether investigation is provided with offset revisal sign, when judged result is "Yes", enters step S110, carries out the action of preposition offset detection, according to the offset detected value that obtains, carries out offset adjustment action.Then, enter step S111.When the result of determining step S109 is "No", then do not carry out treatment step S110, directly enter step S111.
In treatment step S111, whether investigation is provided with concentration revisal sign, when investigation result is "Yes", enters step S112, and the concentration revisal of being scheduled to detects action, carries out concentration revisal adjustment action according to the concentration revisal detected value that obtains.Then, processing finishes.When the judged result of determining step S111 is "No", then do not carry out treatment step S112, processing finishes.
Figure 12 represents the certification mark that another embodiment of the present invention relates to.Use this certification mark can detect the offset of main scanning direction, the offset of sub scanning direction, and detectable concentration.
This certification mark is arranged in the position that optical sensor 16,17,18 can detect respectively, and with the parallel assortment of the carriage direction of moving belt 6, each forms 4 groups.Promptly, certification mark group MNa1, MNa2, MNa3, the MNa4 corresponding with optical sensor 16, certification mark group MNb1, MNb2, MNb3, the MNb4 corresponding with optical sensor 17, certification mark group MNc1, MNc2, MNc3, the MNc4 corresponding with optical sensor 18.
Constituted by homogeneous concentration is trapezoidal respectively by optical sensor 16 detected certification mark group MNa1, MNa2, MNa3, MNa4, described each trapezoidal line segment shape edge key element vertical (following brief note is " vertical edge key element ") that comprise with carriage direction, the line segment shape edge key element of intersecting with carriage direction angle at 45 (following brief note is " sloping edge key element "), and the plane key element, described plane key element is respectively applied for the concentration that detects yellow, cyan and magenta.In certification mark group MNa1, MNa2, MNa3, MNa4, the concentration value that forms the plane key element is different respectively, for example: setting certification mark group MNa1 concentration is 10%, setting certification mark group MNa2 concentration is 40%, setting certification mark group MNa3 concentration is 80%, and setting certification mark group MNa4 concentration is 100%.
In addition, certification mark group MNb1, MNb2, MNb3, the MNb4 corresponding with optical sensor 17, and certification mark group MNc1, MNc2, MNc3, the MNc4 corresponding with optical sensor 18, have respectively and the certification mark group MNa1 of corresponding optical sensor 16, MNa2, MNa3, formation that MNa4 is identical.
In Figure 13 A, represent the detailed formation of a certification mark MN among described certification mark group MNa1, MNa2, MNa3, the MNa4.
Certification mark MN is by described trapezoidal density bullet HK, yellow mark HY, and cyan mark HC, magenta mark HM constitutes.Described yellow mark HY and mark HK formation spaced a predetermined distance from, identical with mark HK shape; Described cyan mark HC and mark HY formation spaced a predetermined distance from, identical with mark HK shape; Described magenta mark HM and mark HC formation spaced a predetermined distance from, identical with mark HK shape.
Can use this mark MN to carry out the offset detection of main scanning direction and the offset detection of sub scanning direction in the following manner.This occasion, density bullet HK becomes the benchmark of detection position skew, can carry out the offset detection of main scanning direction and sub scanning direction to yellow, cyan and magenta color image.
Shown in Figure 13 B, consider that optical sensor 16 detects the state of this certification mark MN, to be made as LAy from the time to the vertical edge key element that detects mark HY after the vertical edge key element that detects mark HK, will be made as LBy from the time to the sloping edge key element that detects mark HY after the sloping edge key element that detects mark HK.
Here, time LAy comprises the offset composition of sub scanning direction, therefore, by computing time LAy set value LCy and poor (LAy-LCy) of time LAy, can obtain the offset composition of sub scanning direction.
Time LBy comprises main scanning direction and sub scanning direction two sides' offset composition, by calculating (LBy-LAy), can obtain the offset composition of main scanning direction.
Equally, if will be made as LAc from the time to the vertical edge key element that detects cyan mark HC after the vertical edge key element that detects mark HK, to be made as LBc from the time to the sloping edge key element that detects mark HC after the sloping edge key element that detects mark HK, by computing time LAc set value LCc and poor (LAc-LCc) of time LAc, can obtain the offset composition of sub scanning direction, poor by calculating (LBc-LAc) can obtain the offset composition of main scanning direction.
If will be made as LAm from the time to the vertical edge key element that detects magenta mark HM after the vertical edge key element that detects mark HK, to be made as LBm from the time to the sloping edge key element that detects mark HM after the sloping edge key element that detects mark HK, by computing time LAm set value LCm and poor (LAm-LCm) of time LAm, can obtain the offset composition of sub scanning direction, poor by calculating (LBm-LAm) can obtain the offset composition of main scanning direction.
In addition, according to optical sensor 16 detect and par that the vertical line segment key element of each mark HK, HY, HC, HM is continuous during output, can obtain the concentration of each mark.
The enlarged drawing of density bullet HK is represented on the top of Figure 14, and the bottom of Figure 14 represents that optical sensor 16 detects the signal output waveform of this density bullet HK.
The output signal level of optical sensor 16 surpasses the time of threshold value TH, is confirmed as representing that optical sensor 16 detects the time of the vertical edge key element of density bullet HK.The output signal level of optical sensor 16 is confirmed as representing that less than the time of threshold value TH optical sensor 16 detects the time of the sloping edge key element of density bullet HK.
Figure 15 A represents the certification mark that another embodiment of the present invention relates to.In the present embodiment, use this certification mark can detect the offset of moving belt 6 at main scanning direction and sub scanning direction, and detectable concentration.
This certification mark MNa comprises trapezoidal density bullet HKa, trapezoidal yellow mark HYa, trapezoidal cyan mark HCa, trapezoidal magenta mark HMa.MNa shown in Figure 15 A is identical with the MN shown in Figure 13 A.Difference only is that the four edges of trapezoidal density bullet HKa among Figure 15 A, trapezoidal yellow mark HYa, trapezoidal cyan mark HCa, trapezoidal magenta mark HMa sets predetermined concentration for, for example 100% high concentration.
Figure 15 B represents that the central portion of certification mark MNa passes through the state of optical sensor 16 along the carriage direction of certification mark MNa.Shown in Figure 15 B, to be made as LAya from the time to the vertical edge key element that detects mark HYa after the vertical edge key element that detects mark HKa, will be made as LBya from the time to the sloping edge key element that detects mark HYa after the sloping edge key element that detects mark HKa.
As above face the description of Figure 13 B, because time zone LAya comprises the offset composition of moving belt 6 at sub scanning direction, therefore, by computing time LAya set value LCya and poor (LAya-LCya) of time LAya, can obtain the offset composition of sub scanning direction.
Time zone LBya comprises the offset composition of moving belt 6 main scanning direction and sub scanning direction two sides, by calculating (LBya-LAya), can obtain the offset composition of main scanning direction.
The concentration of black, yellow, cyan, each mark of magenta can obtain according to the signal during each trapezoidal solid area of detection of optical sensor 16 outputs.
The enlarged drawing of density bullet HKa is represented on the top of Figure 16, and the bottom of Figure 16 represents that optical sensor 16 detects the signal output waveform of this density bullet HKa.
Shown in the bottom of Figure 16, when optical sensor 16 detected the vertical edge key element of density bullet Hka and sloping edge key element, the output signal level of optical sensor 16 became peak value.So certification mark Ka, HYa, HCa, HMa by using present embodiment can determine that optical sensor 16 detects the time of the vertical edge key element and the sloping edge key element of certification mark.
Figure 17 A represents the certification mark that further embodiment of this invention relates to.With Figure 13 A, the certification mark of Figure 15 A is the same, and the offset of using certification mark shown in this Figure 17 A can carry out main scanning direction and sub scanning direction detects, and concentration detects.
This certification mark MNb comprises density bullet HKb, and this density bullet HKb is made of the line segment edge key element along the vertical direction of moving belt 6 carriage directions, plays a part reference mark, is used to detect the offset of sub scanning direction.The concentration of this density bullet HKb is set to predefined concentration, for example, and 100% high concentration.
Certification mark MNb among Figure 17 A further comprises trapezoidal yellow mark HY, trapezoidal cyan mark HC, trapezoidal magenta mark HM, and trapezoidal yellow mark HY, trapezoidal cyan mark HC, trapezoidal magenta mark HM among these marks and Figure 13 A among the certification mark MN are identical.
Density bullet HKb is as detecting described yellow mark HY, cyan mark HC, each vertical edge mark of magenta mark HM and the reference mark of sloping edge mark.Therefore, it is prerequisite that density bullet HKb obtains revisal along the offset of sub scanning direction, and the offset that can carry out described yellow mark HY, cyan mark HC, magenta mark HM detects.
Figure 17 B represents that the central portion of certification mark MNb passes through the state of optical sensor 16 along the carriage direction of certification mark MNb.Shown in Figure 17 B, will the time zone to the vertical edge key element that detects mark HY be made as LAyb behind the mark HKb from detecting, will the time zone to the sloping edge key element that detects mark HY be made as LByb behind the mark HKb from detecting.Because time zone LAyb comprises the offset composition of moving belt 6 at sub scanning direction, therefore, by computing time LAyb set value LCy1 and poor (LAyb-LCy1) of time LAyb, can obtain the offset composition of yellow mark HY at sub scanning direction.Because time zone LByb comprises the offset composition of moving belt 6 at main scanning direction, therefore, by computing time LByb set value LCy2 and poor (LByb-LCy2) of time LByb, can obtain the offset composition of yellow mark HY at main scanning direction.
Equally, will the time zone to the vertical edge key element that detects mark HC be made as LAcb behind the mark HKb from detecting, by computing time LAcb set value LCc1 and poor (LAcb-LCc1) of time LAcb, can obtain the offset composition of cyan mark HC at sub scanning direction.Will the time zone to the sloping edge key element that detects mark HC be made as LBcb behind the mark HKb from detecting.By computing time LBcb set value LCc2 and poor (LBcb-LCc2) of time LBcb, can obtain the offset composition of cyan mark HC at main scanning direction.
Equally, will the time zone to the vertical edge key element that detects mark HM be made as LAmb behind the mark HKb from detecting, by computing time LAmb set value LCm1 and poor (LAmb-LCm1) of time LAmb, can obtain the offset composition of magenta mark HM at sub scanning direction.Will the time zone to the sloping edge key element that detects mark HM be made as LBmb behind the mark HKb from detecting.By computing time LBmb set value LCm2 and poor (LBmb-LCm2) of time LBmb, can obtain the offset composition of magenta mark HM at main scanning direction.
According to optical sensor 16 detect each mark HY, HC, HM with continuous each the trapezoidal solid area of vertical edge key element during the output of (being the signal par), can obtain the concentration of each mark.
In the present embodiment,, therefore, can shorten the formation time of mark group, thereby shorten the activity duration that offset detects because mark HKb only comprises the vertical edge key element.
In the above-described embodiments, by only forming a kind of mark replacement formation variety classes mark (a kind of mark is used for offset and detects, and another kind of mark is used for image color and detects) in the past, implementation offset detection is moved and image color detects action.Therefore, can reduce and be used to carry out that offset detects action and image color detects the needed time of action.Have, not needing provides two types sensor again, so that detection position offset detection mark and image color certification mark.So coloured image of the present invention forms device can carry out offset detection action and image color detection action effectively, can not increase period of reservation of number, can not increase installation cost.
Above with reference to description of drawings embodiments of the invention, but the present invention is not limited to the foregoing description.Can do all changes in the technology of the present invention thought range, they all belong to protection scope of the present invention.
For example, in the above-described embodiments, be applicable to that for the present invention the tandem type coloured image forms device and is illustrated, toner looks like to be formed on photoconductor drum 10a, 11a, and 12a is on the 13a, directly with its superimposed being transferred on the transfer printing material 1.Form in the device at this tandem type coloured image, the transfer printing material plays a part picture mounting body, and not homochromy image congruencing transfer printing thereon.But, the present invention also goes for another kind of tandem type coloured image and forms device, form in the device at this tandem type coloured image, be respectively formed at photoconductor drum 10a, 11a, 12a, the not homochromy toner picture on the 13a is transferred on the moving belt by each primary transfer unit is superimposed, and this moving belt plays a part intermediate transfer belt.After this, this superimposed color toner picture is transferred on the transfer printing material from described moving belt by the secondary transfer printing unit.Form in the device at this tandem type coloured image, moving belt plays a part picture mounting body, and not homochromy toner as superimposed transfer printing thereon.
Have, the present invention goes for any image processing system again, for example, and duplicating machine, printer, facsimile recorder, compounding machine etc.
Claims (12)
1. a coloured image forms device, comprising:
The tandem type image formation unit forms not homochromy image respectively;
Picture mounting body is used for the image that mounting is formed by described image formation unit, and described image formation unit is along the carriage direction configuration of described picture mounting body;
Transfer printing unit, the superimposed in turn transfer printing of not homochromy image that is used for being formed by described image formation unit is at described picture mounting body;
Wherein, describedly comprise moving belt as the mounting body, described image formation unit on this moving belt along the carriage direction of moving belt, form not homochromy certification mark with predetermined space, described certification mark comprises the offset certification mark of not homochromy straight line and not homochromy concentration certification mark, the offset certification mark of described each straight line extends along the vertical direction of the carriage direction of described moving belt, described each concentration certification mark comprises the zone with predetermined concentration, the offset certification mark adjacency of itself and described each straight line;
Coloured image forms device and further comprises:
At least two sensors are used to detect the offset certification mark and the concentration certification mark of described straight line, output detection signal;
Controller, according to detection signal from described at least two sensors output, carry out and detect action, detect of the offset of the offset certification mark of described straight line along the sub scanning direction of moving belt, described sub scanning direction is equivalent to the carriage direction of moving belt, and the concentration that detects described concentration certification mark.
2. a coloured image forms device, comprising:
The tandem type image formation unit forms not homochromy image respectively;
Picture mounting body is used for the image that mounting is formed by described image formation unit, and described image formation unit is along the carriage direction configuration of described picture mounting body;
Transfer printing unit, the superimposed in turn transfer printing of not homochromy image that is used for being formed by described image formation unit is at described picture mounting body;
Wherein, describedly comprise moving belt as the mounting body, described image formation unit on this moving belt along the carriage direction of moving belt, form not homochromy certification mark with predetermined space, described certification mark comprises the offset certification mark of not homochromy straight line and not homochromy concentration certification mark, the offset certification mark of described each straight line extends along the tilted direction that becomes predetermined angular with the carriage direction of described moving belt, described each concentration certification mark comprises the zone with predetermined concentration, the offset certification mark adjacency of itself and described each straight line;
Coloured image forms device and further comprises:
At least two sensors are used to detect the offset certification mark and the concentration certification mark of described straight line, output detection signal;
Controller, according to detection signal from described at least two sensors output, carry out and detect action, detect of the offset of the offset certification mark of described straight line along the main scanning direction of moving belt, described main scanning direction is perpendicular to the carriage direction of moving belt, and the concentration that detects described concentration certification mark.
3. a coloured image forms device, comprising:
The tandem type image formation unit forms not homochromy image respectively;
Picture mounting body is used for the image that mounting is formed by described image formation unit, and described image formation unit is along the carriage direction configuration of described picture mounting body;
Transfer printing unit, the superimposed in turn transfer printing of not homochromy image that is used for being formed by described image formation unit is at described picture mounting body;
Wherein, describedly comprise moving belt as the mounting body, described image formation unit on this moving belt along the carriage direction of moving belt, form not homochromy certification mark with predetermined space, described certification mark comprises the offset certification mark of the first not homochromy straight line, the offset certification mark of the second not homochromy straight line, and not homochromy concentration certification mark, the offset certification mark of described each first straight line extends along the vertical direction of the carriage direction of described moving belt, the offset certification mark of described each second straight line extends along the tilted direction that becomes predetermined angular with the carriage direction of described moving belt, described each concentration certification mark comprises the zone with predetermined concentration, and it is formed between the offset certification mark of the offset certification mark of each first straight line and each second straight line;
Coloured image forms device and further comprises:
At least two sensors are used to detect the offset certification mark of described first straight line, the offset certification mark of second straight line, and concentration certification mark, output detection signal;
Controller, according to detection signal from described at least two sensors output, carry out and detect action, detect of the offset of the offset certification mark of described first straight line along the sub scanning direction of moving belt, described sub scanning direction is equivalent to the carriage direction of moving belt, detect the offset of the offset certification mark of described second straight line along the main scanning direction of moving belt, described main scanning direction is perpendicular to the carriage direction of moving belt, and the concentration that detects described concentration certification mark.
4. form device according to any described coloured image among the claim 1-3, it is characterized in that described image formation unit forms some groups of not homochromy certification marks, each group comprises the certification mark that all are not homochromy.
5. form device according to the coloured image described in the claim 4, it is characterized in that each is organized certification mark and comprises the concentration certification mark, it comprises the zone with predetermined concentration, the concentration difference in the described zone of each group.
6. form device according to any described coloured image among the claim 1-3, it is characterized in that the described transfer paper that is positioned on the described moving belt that comprises as the mounting body.
7. the control method of a coloured image formation device forms not homochromy image, and the image that this is not homochromy is superimposed in turn to be transferred on the picture mounting body, and this control method comprises:
On the moving belt of picture mounting body along the carriage direction of moving belt, form not homochromy certification mark with predetermined space, described certification mark comprises the offset certification mark of not homochromy straight line and not homochromy concentration certification mark, the offset certification mark of described each straight line extends along the vertical direction of the carriage direction of described moving belt, described each concentration certification mark comprises the zone with predetermined concentration, the offset certification mark adjacency of itself and described each straight line;
Detect the offset certification mark and the concentration certification mark of described straight line, output detection signal;
Detection signal according to described output, carry out and detect action, detect the offset of the offset certification mark of described straight line along the sub scanning direction of moving belt, described sub scanning direction is equivalent to the carriage direction of moving belt, and the concentration that detects described concentration certification mark.
8. the control method of a coloured image formation device forms not homochromy image, and the image that this is not homochromy is superimposed in turn to be transferred on the picture mounting body, and this control method comprises:
On the moving belt of picture mounting body along the carriage direction of moving belt, form not homochromy certification mark with predetermined space, described certification mark comprises the offset certification mark of not homochromy straight line and not homochromy concentration certification mark, the offset certification mark of described each straight line extends along the tilted direction that becomes predetermined angular with the carriage direction of described moving belt, described each concentration certification mark comprises the zone with predetermined concentration, the offset certification mark adjacency of itself and described each straight line;
Detect the offset certification mark and the concentration certification mark of described straight line, output detection signal;
Detection signal according to described output, carry out and detect action, detect the offset of the offset certification mark of described straight line along the main scanning direction of moving belt, described main scanning direction is perpendicular to the carriage direction of moving belt, and the concentration that detects described concentration certification mark.
9. the control method of a coloured image formation device forms not homochromy image, and the image that this is not homochromy is superimposed in turn to be transferred on the picture mounting body, and this control method comprises:
On the moving belt of picture mounting body along the carriage direction of moving belt, form not homochromy certification mark with predetermined space, described certification mark comprises the offset certification mark of the first not homochromy straight line, the offset certification mark of the second not homochromy straight line, and not homochromy concentration certification mark, the offset certification mark of described each first straight line extends along the vertical direction of the carriage direction of described moving belt, the offset certification mark of described each second straight line extends along the tilted direction that becomes predetermined angular with the carriage direction of described moving belt, described each concentration certification mark comprises the zone with predetermined concentration, and it is formed between the offset certification mark of the offset certification mark of each first straight line and each second straight line;
Detect the offset certification mark of described first straight line, the offset certification mark of second straight line, and concentration certification mark, output detection signal;
Detection signal according to described output, carry out and detect action, detect of the offset of the offset certification mark of described first straight line along the sub scanning direction of moving belt, described sub scanning direction is equivalent to the carriage direction of moving belt, detect of the offset of the offset certification mark of described second straight line along the main scanning direction of moving belt, described main scanning direction is perpendicular to the carriage direction of moving belt, and the concentration that detects described concentration certification mark.
10. form the control method of device according to any described coloured image among the claim 7-9, it is characterized in that described formation certification mark step comprises some groups of not homochromy certification marks of formation, each group comprises the certification mark that all are not homochromy.
11. the control method according to the formation of the coloured image described in the claim 10 device is characterized in that each is organized certification mark and comprises the concentration certification mark, it comprises the zone with predetermined concentration, the concentration difference in the described zone of each group.
12. the control method according to any described coloured image formation device among the claim 7-9 is characterized in that the described transfer paper that is positioned on the described moving belt that comprises as the mounting body.
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| Application Number | Priority Date | Filing Date | Title |
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| JP192685/04 | 2004-06-30 | ||
| JP2004192685 | 2004-06-30 | ||
| JP259762/04 | 2004-09-07 |
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| CN100418019C true CN100418019C (en) | 2008-09-10 |
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| CNB2005100814072A Expired - Fee Related CN100418019C (en) | 2004-06-30 | 2005-06-30 | Color image forming apparatus and method of controlling the color image forming apparatus |
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| JP4832260B2 (en) * | 2006-11-14 | 2011-12-07 | 京セラミタ株式会社 | Meander detection device and image forming apparatus |
| EP2076015B1 (en) * | 2007-12-25 | 2016-06-29 | Brother Kogyo Kabushiki Kaisha | Image forming apparatus |
| JP4793666B2 (en) * | 2009-03-27 | 2011-10-12 | ブラザー工業株式会社 | Image forming apparatus |
| JP6039235B2 (en) | 2012-05-11 | 2016-12-07 | キヤノン株式会社 | Image forming apparatus |
| EP3389251B1 (en) | 2017-04-11 | 2021-06-30 | Canon Kabushiki Kaisha | Printing apparatus and printing method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000206761A (en) * | 1999-01-08 | 2000-07-28 | Minolta Co Ltd | Image forming device |
| US20020001477A1 (en) * | 2000-07-03 | 2002-01-03 | Fujitsu Limited, Kawasaki, Japan | Printing apparatus and toner density measuring method |
| US6381435B2 (en) * | 1999-12-13 | 2002-04-30 | Ricoh Company, Ltd. | Color image forming apparatus |
| JP2002132005A (en) * | 2000-10-23 | 2002-05-09 | Konica Corp | Color image forming device |
| US20030128995A1 (en) * | 2001-12-11 | 2003-07-10 | Hirotaka Ishii | Color image forming apparatus and image quality control system |
| US20030137577A1 (en) * | 2001-12-18 | 2003-07-24 | Tadashi Shinohara | Color image forming method and apparatus |
| JP2003266787A (en) * | 2002-03-20 | 2003-09-24 | Ricoh Co Ltd | Color image forming apparatus |
-
2005
- 2005-06-30 CN CNB2005100814072A patent/CN100418019C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000206761A (en) * | 1999-01-08 | 2000-07-28 | Minolta Co Ltd | Image forming device |
| US6381435B2 (en) * | 1999-12-13 | 2002-04-30 | Ricoh Company, Ltd. | Color image forming apparatus |
| US20020001477A1 (en) * | 2000-07-03 | 2002-01-03 | Fujitsu Limited, Kawasaki, Japan | Printing apparatus and toner density measuring method |
| JP2002132005A (en) * | 2000-10-23 | 2002-05-09 | Konica Corp | Color image forming device |
| US20030128995A1 (en) * | 2001-12-11 | 2003-07-10 | Hirotaka Ishii | Color image forming apparatus and image quality control system |
| US20030137577A1 (en) * | 2001-12-18 | 2003-07-24 | Tadashi Shinohara | Color image forming method and apparatus |
| JP2003266787A (en) * | 2002-03-20 | 2003-09-24 | Ricoh Co Ltd | Color image forming apparatus |
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