CN1885197A - Image forming apparatus and image forming method - Google Patents
Image forming apparatus and image forming method Download PDFInfo
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- CN1885197A CN1885197A CN 200610092759 CN200610092759A CN1885197A CN 1885197 A CN1885197 A CN 1885197A CN 200610092759 CN200610092759 CN 200610092759 CN 200610092759 A CN200610092759 A CN 200610092759A CN 1885197 A CN1885197 A CN 1885197A
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- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
- Combination Of More Than One Step In Electrophotography (AREA)
- Manufacturing Of Printed Wiring (AREA)
Abstract
In an image forming apparatus ( 1 ), on lower surface of a semiconductor support belt ( 201 ) for supporting a glass substrate ( 9 ), a transfer potential is applied to a position thereon closest to a transfer position and an auxiliary potential which is nearer to a surface potential of a photosensitive material ( 312 ) than the transfer potential is applied to a position thereon away from this position at a predetermined distance in a direction parallel to a traveling direction of the glass substrate ( 9 ). With this operation, a potential having a distribution where the difference between the potential and the surface potential of the photosensitive material ( 312 ) gradually decreases as the distance from the transfer position becomes larger is given to the glass substrate ( 9 ) through the support belt ( 201 ). This prevents discharge in a gap between the photosensitive material ( 312 ) and the glass substrate ( 9 ).
Description
Technical field
The present invention relates to a kind of technology that on substrate, forms toner image (toner image) or electrostatic latent image.
Background technology
The electrophotographic printer (printer) that tradition is used forms toner image in the following manner on printing paper: promptly, thereby the photosensitive drums of using rayed to have charged photosensitive material forms electrostatic latent image, toner is applied to this electrostatic latent image so that this image is shown as toner image, then this image is transferred to printing paper.For toner image is transferred to printing paper, this printing machine uses the transfer printing that utilizes electric field, this method is, by printing paper is contacted with the outer surface of photosensitive drums, simultaneously locate the one side relative with photosensitive drums of printing paper applied electromotive force and form electric field in predetermined transfer position (transfer position), thereby make toner move to printing paper from photosensitive material, wherein, this toner is a large amount of charged particles (or the charged particles in the liquid).
But known ground, according to the electromotive force that is applied to printing paper in the process of transfer printing toner image, electric field is grow partly, thereby causes discharging near transfer position photosensitive drums and the slit between the printing paper, and this will disturb toner image.Therefore, disclose in the document below for example a kind of suppress this photosensitive drums with just with printing paper that this photosensitive drums is separated between the slit in the technology of discharging, described document is: " principle of Electronic Photographing Technology and application (Principles and Application ofElectrophotography Technique) ", Society of Electrophotography of Japan edits, CORONA PUBLISHING CO., LTD, 1988, the 186th to 189 page (document 1); And " Latest Technique for Electrophotography Process and Optimal Design andApplication ﹠amp; Development of Apparatus "; Hiroshi TAKAHARA; KeieiKaihatsu Center Shuppanbu (Management and Development Center; PublishingSection); on June 30th, 1989; the 6652nd page (document 2), in described document, exchange (AC) corona discharger (corona discharger) and be arranged on the face relative transfer position downstream, printing paper, thereby can remove the electric charge that when transfer printing, is applied to printing paper apace in the downstream from another direct current (DC) corona discharger with photosensitive drums.Also known a kind of technology that suppresses to discharge, wherein, printing paper moves with very little curvature bending and along photosensitive drum surface near transfer position, thereby along with in transfer position, become big along the distance of the tangential direction of photosensitive drums and transfer position, the gap width between photosensitive drums and the printing paper sharply increases.
Except Electronic Photographing Technology, also known a kind of many contact pilotages of use (multistylus) have the technology that forms electrostatic latent image on the drum of dielectric layer, and wherein these many contact pilotages are a cover pin electrode.
(it can be under the situation of not using any plate (plate) owing to the printing technology of using the transfer printing that utilizes electric field is simple, only freely changes pattern by changing electronic data), at a high speed and high-resolution export, so this printing technology begins to be used to from be printed onto the various fields into industrial products (for example colored filter of printed circuit board (PCB), liquid crystal panel (colorfilter) or textile printing) formation pattern by plain edition image output device (video printer).
Disclose a kind of printed circuit board (PCB) formation method of patterning that is in the clear 58-57783 communique of Japan, it utilizes electrofax to save and applies and remove operations such as photoresist, mask coating.A kind of printed circuit board (PCB) formation method of patterning that is is disclosed in the Japanese kokai publication hei 5-283838 communique, wherein, form toner image by electrophotographic printing, sheltering the corresponding part of photoresist and conductive pattern, thereby prevented the defective such as the site error of conductive pattern.The technology that a kind of pattern that prevents to produce in the transfer process of the method for making circuit board disturbs is disclosed among the Japanese kokai publication hei 7-254768, wherein, charged particle is induced to plate (substrate) according to picture signal, with the image of formation with the corresponding charged particle of pattern, thereby directly developer (developer) is provided to this electrostatic latent image developing, and need not consider the thickness of this plate.Japanese Unexamined Patent Application Publication 2002-527783 communique discloses a kind of when manufacturing is used for the colored filter of liquid crystal panel, the technology of carrying out xeroprinting with function (high-performance) material (it is the liquid toner) on glass substrate.Japanese kokai publication hei 5-27474 communique discloses the method for a kind of electrofax textile printing and has been used for the toner of textile printing.
Printed circuit board (PCB) and colored filter are formed by the stiffener plate material.Method as carry out transfer printing on this stiffener plate has proposed the roller transfer that working pressure and electric field carry out transfer printing, and the transfer printing of and pressure hot by uses such as intermediate transfer belts.But for printed circuit board (PCB) and colored filter, the dimensional accuracy that printing needs is higher than the dimensional accuracy under the situation of plain edition image, but because the cumulative errors of transporting error and causing that transfer pressure causes by the use of transfer belt, when carrying out transfer printing, be difficult to obtain this required precision at roller transfer or by intermediate transfer belt.
On the other hand, when making photosensitive drums more close each other or when separating with the object of image to be transferred by applying electromotive force, electric field concentrates in the slit between them, thereby according to the size of electric field, might produce discharge in the slit of certain size.To carry out the required electromotive force of transfer printing on big thickness, the material (for example glass of printed circuit board (PCB) or colored filter) than low-k very high because having, therefore the slit between photosensitive drums and the image object to be transferred the front and back of transfer position in a big way in the bigger electric field of formation, and consequent discharge will destroy image.
In the technology of document 1 and document 2,, therefore be easy in printing machine, produce noise because the AC corona discharger uses High Level AC Voltage.And, because glass substrate can not be along its surface curvature, and in said method, when object moves near transfer position with very little curvature bending, so this method is not suitable for glass substrate.
Although can be a kind of like this technology, wherein be provided with such as annular construction member flat rubber belting, that electric capacity is higher with as intermediate transfer member, toner image on the photosensitive material (it is another annular construction member) that is provided with along the periphery of photosensitive drums is with disposable this intermediate transfer member that is transferred to of relatively low transfer bias, then this toner image is transferred to this glass substrate from this intermediate member, even but in this case, when toner image is transferred to glass substrate, need higher relatively transfer printing electromotive force, this will be easy to cause the generation of disadvantageous discharge.
Summary of the invention
The present invention aims to provide a kind of imaging device that is used for forming toner image or electrostatic latent image on substrate.The objective of the invention is with original image when annular construction member is transferred to glass substrate, with high precision image is transferred to substrate from annular construction member, wherein be formed with the original image of toner image form or electrostatic latent image form on the outer surface of this annular construction member.
According to the present invention, this imaging device comprises: the original image maintaining part, it is used to make such as the annular construction member of cylindrical drum or the flat rubber belting outer surface along this original image maintaining part and rotates, and is formed with original image on this outer surface, and this original image is toner image or an electrostatic latent image to be transferred; Travel mechanism, its first type surface that is used to make described substrate is at the most approaching described outer surface of predetermined transfer position, makes described substrate with the identical speed of the speed of advancing in described transfer position with the part of described annular construction member, along a described first type surface, move with the direction identical with the direct of travel of the described part of described annular construction member simultaneously; And transfer printing portion, its be used for electromotive force is applied to described substrate with a described first type surface facing surfaces in, described original image on the described outer surface is transferred to described substrate in described transfer position, described electromotive force has following distribution, that is, the difference between the surface potential of described electromotive force and described annular construction member along with along described direct of travel or with described direct of travel mutually the distance change of a direction and the described transfer position of side reduce greatly and gradually.
In this imaging device, because will have the electromotive force of following distribution provides to this substrate, this is distributed as: the difference between the surface potential of this electromotive force and this annular construction member reduces greatly and gradually along with becoming with the distance of this transfer position facing one direction, discharge thereby can prevent to produce near this annular construction member and the slit between this substrate (inhibition) this transfer position, and with high precision with this original image from this annular construction member transfer printing on this substrate.
According to a preferred embodiment, this imaging device also comprises supporting member, this supporting member has near the surface of contact on the described surface opposite with a described first type surface of the described substrate of contact described transfer position, and this supporting member is formed by the semiconductor material with constant thickness; And described transfer printing portion comprises: the first electromotive force applying unit, its be used for first electromotive force be applied to the described surface of contact facing surfaces of described supporting member on the position, the most approaching described transfer position in described position, and the second electromotive force applying unit, it is used in the position along a described direction apart from the described first electromotive force applying unit preset distance, second electromotive force is applied to described supporting member, wherein, described second electromotive force is than the described surface potential of the more approaching described annular construction member of described first electromotive force, to produce the electromotive force with described distribution on described supporting member.
Can easily the electromotive force with this distribution be applied to this substrate like this.
More preferably, be applied to the described Potential Distribution on the described surface relative of described substrate by described transfer printing portion and also have following distribution with a described first type surface, that is, the difference between the described surface potential of described electromotive force and described annular construction member is along with reduce greatly and gradually along becoming with the distance of described transfer position in the opposite direction with a described side.
In this case, imaging device according to preferred embodiment also comprises supporting member, this supporting member have near described transfer position contact described substrate with a surface of contact described first type surface facing surfaces, and this supporting member is formed by the semiconductor material with constant thickness; And described transfer printing portion comprises: the first electromotive force applying unit, its be used for first electromotive force is applied to described supporting member with described surface of contact facing surfaces on the position, the most approaching described transfer position in described position, and two second electromotive force applying units, described two second electromotive force applying units be used for respectively along a described direction and with a described side in the opposite direction apart from the position of the described first electromotive force applying unit preset distance, second electromotive force is applied to described supporting member, wherein, described second electromotive force is than the described surface potential of the more approaching described annular construction member of described first electromotive force, to produce the electromotive force with described distribution on described supporting member.
According to a further advantageous embodiment of the invention, this imaging device also comprises substrate support sector, and this substrate support sector is supported in described substrate on the seating surface of plane, and this plane seating surface forms having on the member of rigidity; And in this imaging device, described travel mechanism moves described substrate support sector to move described substrate; And described transfer printing portion is the electromotive force applying mechanism that is used for described electromotive force is applied to described seating surface.
In this imaging device,, therefore can this original image be transferred to this substrate from this annular construction member with high precision because this substrate is supported on this plane seating surface that is formed on the member with rigidity.
According to a preferred embodiment, this electromotive force applying mechanism comprises: a plurality of lineation electrodes, each described lineation electrode all extends along the direction vertical with described direct of travel, and described a plurality of lineation electrode is arranged in the described substrate support sector equally spacedly along described direct of travel; Resistance material, it covers described a plurality of lineation electrode, and has the surface as described seating surface; And electromotive force applies the electrode switching mechanism, it is used for first electromotive force is applied to a lineation electrode that is positioned at described transfer position of described a plurality of lineation electrodes, to be applied in described a plurality of lineation electrode than second electromotive force of the surface potential of the more approaching described annular construction member of described first electromotive force, along described direct of travel or the direction opposite with described direct of travel apart from a lineation electrode of described transfer position preset distance, and synchronously switch lineation electrode that is applied with described first electromotive force and the lineation electrode that is applied with described second electromotive force in turn with moving of described substrate support sector.
Preferably, two adjacent in described a plurality of lineation electrodes lineation electrodes are connected to each other by resistive element, and the resistance value of described resistive element is less than the resistance value of the described resistance material between described adjacent two lineation electrodes.
In this imaging device, because described lineation electrode is coated with described resistance material, therefore can easily produce electromotive force, to prevent discharge with ideal distribution.
Execute example according to another, the electromotive force applying mechanism comprises: a plurality of lineation electrodes, and described a plurality of lineation electrodes expose from described seating surface, and are provided with equally spacedly along described direct of travel, and each lineation electrode all extends along the direction vertical with described direct of travel; Insulator, they are between described a plurality of lineation electrodes, to form described seating surface with described a plurality of lineation electrodes; A plurality of resistive elements, each described resistive element all are used for connecting two adjacent lineation electrodes of described a plurality of lineation electrode; And electromotive force applies the electrode switching mechanism, it is used for first electromotive force is applied to a lineation electrode that is positioned at described transfer position of described a plurality of lineation electrodes, to be applied in described a plurality of lineation electrode than second electromotive force of the surface potential of the more approaching described annular construction member of described first electromotive force, a lineation electrode along described direct of travel or the direction opposite apart from described transfer position preset distance with described direct of travel, and synchronously switch lineation electrode that is applied with described first electromotive force and the lineation electrode that is applied with described second electromotive force in turn with moving of described substrate support sector.
In above-mentioned two preferred electromotive force applying mechanisms, second electromotive force can be applied in described a plurality of lineation electrode, the partial linear electrode along described direct of travel and the direction opposite apart from described transfer position preset distance with described direct of travel, wherein, described second electromotive force is than the surface potential of the more approaching described annular construction member of described first electromotive force.Thus, difference between the surface potential of described annular construction member and the electromotive force of described seating surface reduces greatly and gradually along with the distance along both direction and described transfer position becomes, thereby can prevent that the direct of travel side of described transfer position and opposite side thereof from producing discharge.
In this imaging device, preferably, described original image is by the liquid toner is applied to the toner image that the electrostatic latent image on the described outer surface forms.
The present invention also aims to provide a kind of formation method that is used for forming toner image or electrostatic latent image on substrate.
From the detailed description of the invention below in conjunction with accompanying drawing, it is more clear that these and other objects of the present invention, feature, scheme and advantage will become.
Description of drawings
Fig. 1 is the figure that illustrates according to the imaging device of first preferred embodiment;
Fig. 2 illustrates near the figure of transfer position;
Fig. 3 is illustrated in the process flow diagram that forms the operating process of toner image on the glass substrate;
Fig. 4 is the figure that the electromotive force that is applied to support belt is shown;
Fig. 5 is the figure that another exemplary transfer printing portion is shown;
Fig. 6 is the figure that another exemplary transfer printing portion is shown;
Fig. 7 is the figure that illustrates according to the imaging device of second preferred embodiment;
Fig. 8 is the figure that another kind of situation is shown, and wherein produces distribution electromotive force (distribution potential) on the surface of contact of support belt;
Fig. 9 is the figure that another situation is shown, and wherein produces the distribution electromotive force on the surface of contact of support belt;
Figure 10 is the figure that illustrates according to the imaging device of the 3rd preferred embodiment;
Figure 11 is the vertical view that substrate support sector is shown;
Figure 12 is the figure that substrate travel mechanism is shown;
Figure 13 is illustrated in the process flow diagram that forms the operating process of toner image on the glass substrate;
Figure 14 illustrates the constitutional diagram that the electromotive force applying mechanism applies electromotive force;
Figure 15 is the figure that illustrates according to the imaging device of the 4th preferred embodiment;
Figure 16 is the figure that illustrates according to the imaging device of the 5th preferred embodiment;
Figure 17 is the figure that another example of a plurality of lineation electrodes is shown;
Figure 18 is the figure that the another example of a plurality of lineation electrodes is shown; And
Figure 19 is the figure that another exemplary electromotive force applying mechanism is shown.
Embodiment
Fig. 1 is the structural drawing that illustrates according to the imaging device 1 of first preferred embodiment of the invention.The imaging device 1 of this preferred embodiment is to use Electronic Photographing Technology to form the printing machine of toner image on glass substrate.This toner image is fixed on the glass substrate by the unshowned fixing device (fusing unit) (stationary installation) that is positioned at the downstream, thinks that the flat-panel monitor such as LCD is made colored filter.In fact, the setting of will aliging with fixing device with corresponding three imaging devices 1 of toner of three kinds of colors (that is, R (red), G (green) and B (indigo plant)).
The imaging device 1 of Fig. 1 comprises: ring-type support belt 201, and it is formed by the semiconductor material with constant thickness; And two roller 2021a and 2021b, they are provided with along the Y direction of Fig. 1 with being separated from each other, and each roller 2021a and 2021b all extend along directions X.Support belt 201 is wrapped on (hang on) described two roller 2021a and the 2021b.One of them roller 2021a is connected with motor 2022, and support belt 201 rotates around two roller 2021a and 2021b rotationally by the driving of this motor 2022.Be provided with thickness on the top with respect to two roller 2021a and 2021b of support belt 201 (+Z side) and for example be the glass substrate 9 of 0.3mm to 0.7mm.This glass substrate 9 moves horizontally along the Y direction by the rotation of support belt 201, and the lower surface of this glass substrate 9 first type surface of Z side (be positioned at-) (is said exactly with the outer surface of support belt 201, it is the part with respect to the top of roller 2021a and 2021b of support belt 201 towards the outer surface of+Z direction, hereinafter, this part of outer surface is called " surface of contact ") contact, and by this outer surface support.In imaging device 1, two roller 2021a and 2021b and motor 2022 composing base travel mechanisms 202 are to move the glass substrate 9 on support belt 201.
Treating apparatus 3 comprises that diameter is the photosensitive drums (photoconductor drum) 31 of 250mm, and this photosensitive drums 31 is connected to unshowned motor by reduction gearing, and supported rotationally around the rotating shaft J1 that is parallel to directions X.Photosensitive drums 31 has by metal such as aluminium and is the bulging body 311 at center with rotating shaft J1, these drum body 311 ground connection.On the outer surface of drum body 311, be coated with the individual layer organic photo material (abbreviating hereinafter, " photosensitive material 312 " as) that (or vapour deposition has) for example has phthalocyanine color equably.The diameter of photosensitive drums 31 is not limited to 250mm, but preferably, its diameter is in the scope of 200mm to 400mm.Except the individual layer organic photo material with phthalocyanine color, photosensitive material 312 can also be formed by the inorganic photosensitive material such as amorphous silicon.
Treating apparatus 3 also has the drum charger (drum charger) 32 that is set to towards photosensitive drums 31, and this drum charger 32 produces ion so that photosensitive material 312 is charged.Around photosensitive drums 31, be provided with along clockwise direction from drum charger 32 beginnings: sub-image formation portion 33, it sends the light that is used for imaging, to form electrostatic latent image on photosensitive material 312; Development section (developing part) 34, it is applied to the electrostatic latent image that forms with liquid toner (for example, being dispersed in the wet toner in the insulation isoparaffic solvent (carrier solvent)) on photosensitive material 312, thereby makes image developing; Clearer 35, the surface of its clean feel luminescent material 312; And drum discharger 36, it is luminous to remove electric charge from photosensitive material 312.Development section 34 is connected to color powder feeding device (not shown), and this color powder feeding device provides the liquid toner as developer solution.
In the mobile route of the each several part of photosensitive material 312, the glass substrate 9 on the support belt 201 between development section 34 and clearer 35 near the outer surface of photosensitive material 312.As described below, because the toner on the outer surface of photosensitive material 312 is transferred to the upper surface of glass substrate 9 in photosensitive material 312 and the immediate each other position of glass substrate 9, therefore in the following description, photosensitive material 312 and the immediate each other position of glass substrate 9 are called transfer position, abbreviate a first type surface of the toner to be transferred of glass substrate 9 as upper surface (needing not to be normality is the surface that physics makes progress).Transfer position is positions of fixing with respect to treating apparatus 3.
Fig. 2 shows near the enlarged drawing the transfer position.As shown in Figure 2, transfer printing electromotive force applying unit 41 has the electrode 411 that prolongs along the directions X of Fig. 2, applies the transfer printing electromotive force to this electrode 411 by transfer printing electromotive force supply department 414, and electrode 411 around be coated with conductive rubber 412, to form transfer roll 413.Support belt 201 with the surface of contact facing surfaces on, transfer roll 413 contacts with the position of close transfer position, and support belt 201 and glass substrate 9 are between transfer roll 413 and photosensitive drums 31.Similar with transfer printing electromotive force applying unit 41, each auxiliary electromotive force applying unit 42 all has the electrode 421 that prolongs along directions X, apply auxiliary electromotive force to described electrode 421 by auxiliary electromotive force supply department 424, and be coated with conductive rubber 422 around the electrode 421, to form roller (being called hereinafter, " help roll ") 423.Help roll 423 is positioned at the position that is separated along Y direction and transfer roll 413, with contacting with the surface of contact facing surfaces of support belt 201.In transfer roll 413 and two help rolls 423, conductive rubber 412 and 422 produces elastic deformations by the glass substrate of being located on the support belt 201 9, thereby electromotive force is applied to support belt 201 equably along the direction (directions X) vertical with the Y direction and along the upper surface of glass substrate 9.Also can form transfer roll 413 and help roll 423 by using conductive rubber other conductive elastomer jacketed electrode 411 and 421 in addition.
Fig. 3 illustrates imaging device 1 forms the operating process of toner image on glass substrate 9 process flow diagram.The step S112 to S115 of Fig. 3 shows the operating process at the part of photosensitive material 312, and in fact, for whole photosensitive material 312, these steps are almost carried out simultaneously.
In the imaging device 1 of Fig. 1, at first, around rotating shaft J1 (along the rotation direction shown in the arrow among Fig. 1 71) rotation deasil, glass substrate 9 beginnings are simultaneously moved (step S111a and S111b) with constant speed court+Y direction with constant rotating speed in photosensitive drums 31 beginnings.In treating apparatus 3, rotation by photosensitive drums 31, the photosensitive material 312 of similar cylindrical drum by rotating shaft J1 with respect to peripheral assembly (promptly, drum charger 32, sub-image formation portion 33, development section 34, clearer 35 and drum discharger 36) rotate continuously, these peripheral assemblies begin photosensitive material 312 is handled.In the glass substrate 9 of this preferred embodiment, go up the black matrix" (black matrix) that forms dot matrix at this upper surface surface for the treatment of apparatus 3 (that is, towards) in advance by other device.
Drum charger 32 in turn electric charge is applied to the arrival of photosensitive material 312 and this drum charger 32 in the face of the part of position (hereinafter, be called " target part "), with the surface charging of this target part, institute's charging voltage for example is-700V (step S112) with equably.Move to charged target partial continuous the irradiation position of sub-image formation portion 33.Sub-image formation portion 33 has light emitting diode (LED) array as light source, is provided with a plurality of LED that are used to send predetermined wavelength light in this led array.Sub-image formation portion 33 receives the corresponding view data of toner color with treating apparatus 3 in the view data of the color component that the image by the pattern of display color optical filter produces, and sends the light that is used for imaging to photosensitive material 312 according to this view data.The target of photosensitive material 312 part by light-struck part in, lip-deep electric charge moves in the photosensitive material 312 and is removed.Since photosensitive material 312 not by light-struck part retainer belt electricity condition, therefore on the surface of photosensitive material 312, form CHARGE DISTRIBUTION image (that is electrostatic latent image) (step S113).The light source of sub-image formation portion 33 needn't be defined as LED, also can be combination of for example semiconductor laser, lamp and liquid crystal light valve etc.
The part that is formed with electrostatic latent image of photosensitive drums 31 (target part) moves to towards the position of development section 34, and the developer roll 341 of development section 34 is applied to electrostatic latent image (step S114) with liquid toner (being dispersed in the solvent and charged toner) then.At this moment, the charged toner that polarity is identical with surface polarity on the photosensitive material 312 only is applied on the part that the electric charge of the target part of photosensitive material 312 has been removed, so that latent electrostatic image developing.That is to say, on the target part of photosensitive material 312, form toner image.May also have another kind of situation, that is, and on the live part of charged toner attached to photosensitive material 312.
Then, target partly arrives and the hithermost transfer position of the upper surface of glass substrate 9, and transfer position accurately edge+Y direction move with speed (tangential speed in the part vertical of the outer surface of photosensitive drums 31) with rotating shaft J1 according to the rotating speed of photosensitive drums 31.Substrate travel mechanism 202 with+Y direction identical with target part moving direction as direct of travel, and to come the glass substrate 9 of the upper surface of mobile support belt 201 in the identical speed of the gait of march of transfer position with target part, and the transfer roll 413 of Fig. 2 is pressed to glass substrate 9 photosensitive drums 31 1 sides (+Z side) by support belt 201 a little in transfer position, so that the upper surface of glass substrate 9 partly contacts (glass substrate and photosensitive material are not must be in contact with one another each other yet, below identical therewith) by toner with the target of photosensitive material 312.
Fig. 4 is illustrated near the figure that is applied to the electromotive force of support belt 201 transfer position.Fig. 4 only shows the position P1 along Y direction contact transfer roll 413 of support belt 201, with the electromotive force that contacts-produce between the position P2 of the help roll 423 of Y side along the Y direction of support belt 201.
As mentioned above, because transfer printing electromotive force applying unit 41 is applied to support belt 201 with positive transfer printing electromotive force, and auxiliary electromotive force applying unit 42 assists electromotive force to be applied to support belt 201 polarity and opposite polarity the bearing of this positive transfer printing electromotive force, and therefore constant electric current is sent to help roll 423 from transfer roll 413 via the semiconductor support belt 201 with constant thickness.At this moment, in support belt 201, the electromotive force of transfer position and be the product of resistance and the electric current that support belt 201, flows in the zone from the transfer position of support belt 201 to the position that is separated with this transfer position along the difference (that is voltage) between the electromotive force of the position that Y direction and this transfer position are separated.
Resistance in this zone and proportional to the distance of the position that is separated with this transfer position along the Y direction from transfer position.Therefore, as shown in Figure 4, along with this part from advancing towards help roll 423 position contacting P2 along the Y direction with-Y side with transfer roll 413 position contacting P1, the electromotive force that is applied to the each several part in the support belt 201 is decreased to auxiliary electromotive force A2 (in other words, forming potential gradient in support belt 201) from transfer printing potential A 1 linearity.
Since auxiliary electromotive force A2 than transfer printing potential A 1 more near the surface potential A0 of photosensitive material 312, therefore, on the surface of contact of support belt 201, produce electromotive force with following distribution, promptly the difference (absolute value) between the surface potential of this electromotive force and photosensitive material 312 is along with the distance change of edge-Y direction and transfer position reduces greatly and gradually (hereinafter, the electromotive force of the whole distribution of indication that will produce in support belt 201 is called " distribution electromotive force "), this distribution electromotive force provides (descend) surface relative with this upper surface to glass substrate 9.In this preferred embodiment, because the value of the surface potential A0 of photosensitive material 312 is between the value of the value of transfer printing potential A 1 and auxiliary electromotive force A2, therefore the regional of electromotive force that distribute becomes between the position P0 of A0 at transfer position P1 and electromotive force just, in this zone, difference between the surface potential of this distribution electromotive force and photosensitive material 312 is along with the distance change of edge-Y direction and transfer position P1 reduces (being called hereinafter, " electric potential difference reduces the zone ") greatly and gradually.If the value of auxiliary electromotive force between the value of the value of transfer printing electromotive force and the surface potential of photosensitive material 312, then electric potential difference reduce the zone for from transfer position P1 extremely with the help roll 423 position contacting P2 of-Y side.
By above-mentioned distribution electromotive force, transfer position polarization on the upper surface of glass substrate 9 and the opposite polarity electromotive force of toner, thus the toner on the target of photosensitive material 312 part moves to the upper surface (step S115) of glass substrate 9.Near transfer position electric potential difference reduces in the zone, because the difference between the electromotive force of the surface potential of photosensitive material 312 and the upper surface of glass substrate 9, the voltage (bias voltage) that promptly is applied to the slit between the upper surface of the outer surface of photosensitive material 312 and glass substrate 9 reducing greatly and gradually along with the distance of edge-Y direction and transfer position becomes, and the width in this slit increases gradually, so the reducing greatly and sharply apart from becoming along with edge-Y direction and transfer position of the electric field in this slit.In imaging device 1, transfer position+electromotive force on the Y side has distribution same as described above, thereby can prevent the discharge that (or inhibition) caused by following phenomenon, in this phenomenon, be applied to transfer position+Y and-electric field in slit between the upper surface of near the outer surface Y both sides, photosensitive material 312 and glass substrate 9 becomes the electric breakdown field in this slit or higher electric field.
Move to the target partial continuous position of the clearer 35 of Fig. 1, clearer 35 can be by removing unnecessary material, for example remain on the target part of photosensitive material 312 toner (in other words, be not transferred to the toner of glass substrate 9), come the surface of clean feel luminescent material 312, thereby make photosensitive material 312 mechanically return original state.Then, by drum discharger 36 with rayed photosensitive material 312 removing electric charge, thereby electrically return original state, wherein this drum discharger 36 has the combination of lamp and filtrator or LED etc.
Because the operation of step S112 to S115 is almost carried out on the each several part of photosensitive material 312 simultaneously, and each operation is all carried out on the each several part that arrives transfer position in turn of photosensitive material 312 continuously, therefore final, the whole toner image on the outer surface of photosensitive material 312 is transferred to the upper surface of glass substrate 9 in transfer position.When being completed for printing of whole glass substrate 9, photosensitive drums 31 stops operating, and substrate travel mechanism 202 also stops, thus the EO of imaging device 1 (step S116a and S116b).Thereby, on the entire upper surface of glass substrate 9, be completed into a kind of toner image of color.
As mentioned above, in fact, prepare and three kinds of color R, G and corresponding three imaging devices 1 of B, and when the formation of the toner image of finishing a kind of color on glass substrate 9, glass substrate 9 is sent to next imaging device to form down a kind of toner image of color.By this operation, on glass substrate 9, form the toner image of three kinds of color R, G and B by three imaging devices, and finally pass through fixing device heats and photographic fixing, thereby be fixed on the glass substrate 9.Like this, colored filter completes.
But, according to the design of imaging device and impose a condition (for example between transfer roll 413 and the help roll 423 along the distance of Y direction or the size of transfer printing electromotive force and auxiliary electromotive force), following situation may occur, promptly be applied near near the electric field the transfer position and become electric breakdown field in the slit between the upper surface of the outer surface of photosensitive material 312 and glass substrate 9 or higher electric field.Even can not avoid this design or impose a condition, also can prevent by the carrier solvent of full of liquid toner, between the upper surface of the outer surface of photosensitive material 312 and glass substrate 9, produce discharge (also can adopt this method) following imaging device in the transfer position proximity.From this viewpoint, preferably, the toner image that is formed by imaging device 1 forms by the electrostatic latent image on the outer surface that the liquid toner is applied to photosensitive material 312.Naturally, according to the design of imaging device with impose a condition, also can use powdery toner (not being dispersed in the charged toner in the carrier solvent).
As mentioned above, in the imaging device 1 of Fig. 1, when the toner image on the photosensitive material 312 when transfer position is transferred to the upper surface of glass substrate 9, electromotive force with following distribution provides to glass substrate 9 via support belt 201 by transfer printing portion 4, and this is distributed as: the difference between the surface potential of this electromotive force and photosensitive material 312 along with edge+Y and-the distance change of Y direction and transfer position P1 reduces greatly and gradually.Can prevent near transfer position like this, produce discharge between photosensitive material 312 and the glass substrate 9, this discharge can be disturbed the toner image on the outer surface of photosensitive material to be transferred 312 or be transferred to toner image on the upper surface of glass substrate 9, therefore can toner image be transferred on the glass substrate 9 with high precision.
In addition, in imaging device 1, owing to the polarity of the auxiliary electromotive force that is applied to support belt 201 by auxiliary electromotive force applying unit 42 is opposite with the polarity of the transfer printing electromotive force that applies by transfer printing electromotive force applying unit 41, therefore in support belt 201, produced the distribution electromotive force of the gradient steeper (sharp) under the situation that gradient ratio transfer printing electromotive force and auxiliary electromotive force have identical polar, thereby can further prevent near transfer position, produce discharge in the slit between photosensitive material 312 and the glass substrate 9.
Fig. 5 is the figure that another exemplary transfer printing portion is shown.In the 4a of transfer printing portion of Fig. 5, be provided with transfer printing electromotive force applying unit 41a, to replace the transfer printing electromotive force applying unit 41 of Fig. 2 with transfer roll 413 with DC corona discharger 415.The discharge electric wire of corona discharger 415 (discharge wire) is connected to transfer printing electromotive force supply department 414.
When the toner image on the outer surface of photosensitive material 312 when transfer position is transferred on the glass substrate 9, electric charge (discharge ion) be applied to support belt 201 by corona discharger 415 with the surface of contact facing surfaces on the position, this position is near this transfer position, and support belt 201 and glass substrate 9 place between corona discharger 415 and the photosensitive drums 31, and the transfer printing electromotive force is applied to this position in the mode that does not contact with support belt 201 thus.By this operation, in support belt 201, produced electromotive force with following distribution, this is distributed as: the difference between the surface potential of this electromotive force and photosensitive material 312 along with edge+Y and-the distance change of Y direction and transfer position reduces greatly and gradually, and this electromotive force be applied to glass substrate 9 with the upper surface facing surfaces.Therefore can prevent near transfer position, produce discharge in the slit between photosensitive material 312 and the glass substrate 9, thereby can toner image be transferred on the glass substrate 9 with high precision.
Fig. 6 is the figure that another exemplary transfer printing portion is shown.In the 4b of transfer printing portion of Fig. 6, be provided with a plurality of auxiliary electromotive force applying unit 42a that all has the brush 425 that forms by conductive material, to replace a plurality of auxiliary electromotive force applying unit 42 that all has help roll 423 shown in Fig. 2.Auxiliary electromotive force supply department 424 is connected to each brush 425, and brush 425 contacts with the position with on the surface of contact facing surfaces of support belt 201, described position edge+Y and-Y direction and transfer roll 413 be at a distance of preset distance, thereby assist electromotive force to be applied to these positions.Therefore, in the imaging device of Fig. 6, by using brush 425 to replace help roll 423, can simplify the structure of auxiliary electromotive force applying unit, and can prevent near transfer position, produce discharge in the slit between photosensitive material 312 and the glass substrate 9, thereby can toner image be transferred on the glass substrate 9 with high precision.
Transfer roll 413 or help roll 423 are arranged in the transfer printing electromotive force applying unit 41 and two auxiliary electromotive force applying units 42 in the transfer printing portion 4 of Fig. 1, in two auxiliary electromotive force applying units 42 among the 4a of transfer printing portion of Fig. 5 and only be arranged in the transfer printing electromotive force applying unit 41 among the 4b of transfer printing portion of Fig. 6.Therefore, because in above-mentioned imaging device, have at least one to be provided with roller in transfer printing electromotive force applying unit and two auxiliary electromotive force applying units, therefore and roller is elastic deformation in transfer printing electromotive force applying unit 41 with this roller or auxiliary electromotive force applying unit 42, can stablize and suitably electromotive force is applied to support belt 201.If electromotive force suitably can be applied to support belt 201, then roller can be set in the electromotive force applying unit, the roller that formed by metal or semiconductor material or Metal Contact sheet (segment) etc. also can be set.
Fig. 7 is the structural drawing that illustrates according to the imaging device 1a of second preferred embodiment.In the imaging device 1a of Fig. 7, be provided with intermediate transfer portion 25, and the toner image on the photosensitive drums 31 is transferred to glass substrate 9 indirectly by this intermediate transfer member 251 with intermediate transfer member 251.Particularly, intermediate transfer member 251 is that it is formed by dielectric material such as the annular construction member of flat rubber belting (flat belt), and is set to contact with 252b with two roller 252a from the outside.One of them roller 252a is connected with motor, and by driving this motor, intermediate transfer member 251 contacts with the part that is formed with toner image of photosensitive drums 31 when outer surface rotates.Another roller 252b is connected to DC power supply 253.In the imaging device 1a of Fig. 7, be formed on the electromotive force that the toner image on the photosensitive material 312 applies by roller 252b by sub-image formation portion 33, development section 34 etc. and be transferred on the intermediate transfer member 251 of rotation.The part that is formed with toner image of intermediate transfer member 251 moves to glass substrate 9.Then, transfer printing portion 4 applies electromotive force between intermediate transfer member 251 and glass substrate 9, prevents from simultaneously to discharge near transfer position, thereby the toner image on the intermediate transfer member 251 is transferred to glass substrate 9.
In the imaging device 1a of Fig. 7, when imaging, glass substrate 9 along Fig. 7-the Y direction moves.In imaging device 1 and 1a, can adopt following situation: promptly, omit development section 34, and transfer printing portion 4 is applied to glass substrate 9 with the opposite polarity transfer printing electromotive force of the electric charge of polarity and electrostatic latent image, simultaneously with the electrostatic latent image on the photosensitive material 312, maybe will be transferred to glass substrate 9 from the electrostatic latent image that photosensitive material 312 is transferred to intermediate transfer member 251.
Therefore, in imaging device 1 and 1a, the original image maintaining part plays in photosensitive drums 31 or intermediate transfer portion 25, this original image maintaining part makes such as the annular construction member of cylindrical drum or flat rubber belting along its outer surface (this original image is toner image or the electrostatic latent image to glass substrate 9 to be transferred) that is formed with original image and rotates, thereby the original image to glass substrate 9 to be transferred is moved to transfer position and is transferred on the glass substrate 9.Can also be another kind of situation, many contact pilotages promptly are set, it is a cover pin electrode, as sub-image formation portion, the annular construction member that is formed by dielectric material is set in the original image maintaining part, voltage is applied to a plurality of pin electrodes of facing with the outer surface of annular construction member, and is being provided with the slit between pin electrode and the annular construction member, thereby the outer surface that electric charge is applied to annular construction member is to form electrostatic latent image so that discharge between the tip of pin electrode and the annular construction member.
Although described the imaging device 1 and the 1a of first and second preferred embodiments above, imaging device 1 and 1a can also have other the various modification except above-mentioned example.
In first and second preferred embodiments, transfer printing electromotive force and auxiliary electromotive force are applied to semiconductor support belt 201 to produce the distribution electromotive force with following distribution in support belt 201, this is distributed as: the difference between the surface potential of this electromotive force and photosensitive material 312 reduces greatly and gradually along with the distance along Y direction and transfer position becomes, thus the distribution electromotive force easily can be applied to glass substrate 9 with the upper surface facing surfaces.But in imaging device 1 and 1a, can use another kind of technology to make and produce this distribution electromotive force in the surface of contact of support belt.For example, in the imaging device of Fig. 8, the support belt 201 that is provided with Fig. 1 has identical shaped ring-type support belt 201a, it is formed by the insulating material with constant thickness, and is provided with in this support belt 201a along a plurality of DC corona dischargers that are used for applying to support belt 201a electric charge of Y direction alignment.Along the Y direction be arranged on respect to transfer position-support belt 201a that each corona discharger 43a of Y side is applied to the positive charge of time per unit scheduled volume and rotate with the surface of contact facing surfaces, and be arranged on respect to transfer position+each corona discharger 43b of Y side is applied to this surface with the negative charge of time per unit scheduled volume.In the imaging device of Fig. 8, on the surface of contact of support belt 201a, produce distribution electromotive force with following distribution, promptly the difference between the surface potential of this electromotive force and photosensitive material 312 along with edge+Y and-the distance change of Y direction and transfer position reduces greatly and gradually, and should the distribution electromotive force provide to glass substrate 9 with the upper surface facing surfaces.Can be following situation, promptly be arranged on respect to transfer position+a plurality of corona discharger 43b on the Y side play a plurality of ion generators, become the electric charge that removes greatly and more on the support belt 201a with the distance along with edge+Y direction and transfer position.
As another exemplary technique that on the surface of contact of support belt, produces the distribution electromotive force, in the imaging device of Fig. 9, the support belt 201 that is provided with Fig. 1 has identical shaped ring-type support belt 201b, it is formed by photosensitive material, and in this support belt 201b, be provided be used to apply electric charge to support belt 201b near the DC corona discharger 44 of transfer position.Corona discharger 44+be provided with irradiation portion 45 on the Y side, this irradiation portion 45 is used for along in certain zone of Y direction, send light towards support belt 201b with the surface of contact facing surfaces with uniform luminance, and support belt 201b is by conductive rollers 46 ground connection, the irradiation portion 45 that passes through that this conductive rollers 46 is positioned at support belt 201b send light-struck zone+the Y side near.In the each several part of support belt 201b, along with the rotation of support belt 201b, the light quantity that applies (semi-invariant of the light that applies) is along with the distance of edge+Y direction and transfer position becomes increase greatly and gradually.In the imaging device of Fig. 9, the electric charge that is applied by the corona discharger 44 that is positioned at transfer position below moves to the inside of support belt 201b, then by removing support belt 201b is luminous.At this moment, owing to amount that moves to the electric charge in the support belt 201b and the distance change of the light quantity that applies along with edge+Y direction and transfer position increase greatly, therefore in this imaging device, on the surface of contact of support belt 201b, produce distribution electromotive force with following distribution, this is distributed as, difference between the surface potential of this electromotive force and photosensitive material 312 reduces greatly and gradually along with the distance of edge+Y direction and transfer position becomes, and should the distribution electromotive force provide to glass substrate 9 with the upper surface opposing lower surface.In the imaging device of Fig. 9, transfer position-the Y side on, in case of necessity, the modes such as slit between photosensitive material 312 and the glass substrate 9 of can being full of by the carrier solvent with the liquid toner prevent discharge.
Therefore, in imaging device, can realize being used for the distribution electromotive force is applied to the transfer printing portion of glass substrate with various structures.Although in above preferred embodiment, support belt 201 can by with its surface of contact contact glass substrate 9 with the upper surface opposing lower surface, come the glass substrate 9 that steadily also suitably support size is bigger, but, the transfer printing portion that directly the distribution electromotive force is applied to the lower surface of glass substrate 9 can be set for by all extending and wait outward flange or the support glass substrate 9 of supporting glass substrate 9 along a plurality of rollers of Y direction setting along directions X.
In above-mentioned first and second preferred embodiments, although the help roll 423 (or brush 425) by auxiliary electromotive force applying unit 42 is applied to support belt 201 with the opposite polarity auxiliary electromotive force of polarity and transfer printing electromotive force, but also can be another kind of situation, promptly in auxiliary electromotive force applying unit 42, omit auxiliary electromotive force supply department 424, and make help roll 423 ground connection, so that ground potential is applied to support belt 201 as auxiliary electromotive force.This can simplify the structure of auxiliary electromotive force applying unit 42, and the distribution electromotive force that will have a heavy gradient is applied to glass substrate 9.
In above-mentioned first and second preferred embodiments, although will have the distribution electromotive force of following distribution provides to glass substrate 9, this is distributed as: the difference between the surface potential of this electromotive force and photosensitive material 312 reduces greatly and gradually along with becoming along the distance of Y direction (this direction is parallel to the direct of travel of glass substrate 9 during in imaging) and transfer position in the both sides of transfer position, yet, also the distribution electromotive force only can be provided to transfer position+Y or-the Y side.But, from toner image is transferred to the viewpoint of glass substrate 9 with high precision from photosensitive material 312, being preferably the distribution electromotive force that will have similar following distribution provides to glass substrate 9, this is distributed as: the difference between the surface potential of this electromotive force and photosensitive material 312 reducing greatly and gradually along with the distance along relative both direction and transfer position becomes, and it is similar with above-mentioned first and second preferred embodiments, should prevent transfer position+Y and-the Y side on, produce to discharge in the slit between photosensitive material 312 and glass substrate 9.
In imaging device 1 and 1a, can be provided with by for example, have the platform (stage) of the semiconductor material formation of constant thickness, glass substrate 9 is set on this platform, produce the distribution electromotive forces in this transfer printing portion 4.In this case, substrate travel mechanism is embodied as following mechanism, this mechanism by linear motor and ball screw mechanism and motor combination etc. along Y direction mobile platform flatly.Therefore, can use various members to be used as having near the supporting member of the surface of contact that transfer position, contacts with glass substrate 9, and be used in transfer position (in this position, glass substrate 9 is near the outer surface of photosensitive material 312) along travel mechanism that the tangential direction of ring-type photosensitive material 312 (or intermediate transfer member 251) moves glass substrate 9.According to the design of imaging device 1 or 1a, can be following situation, promptly glass substrate 9 is fixing, and transfer printing portion and treating apparatus move with respect to glass substrate 9 along the Y direction, to form toner image on glass substrate 9.
Figure 10 is the structural drawing that illustrates according to the imaging device 1b of third preferred embodiment of the invention.Imaging device 1b also is to use Electronic Photographing Technology to form the printing machine of toner image on glass substrate, and toner image is fixed to glass substrate by the unshowned fixing device that is positioned at the downstream, is that the flat-panel monitor such as LCD is made colored filter thus.In fact, the setting of will aliging with fixing device with corresponding three the imaging device 1b of toner of three kinds of colors (being R (red), G (green) and B (indigo plant)).
Imaging device 1b comprises: substrate support sector 21, and it supports that by plane seating surface 210 thickness are the lower surface (first type surface on the Z side) of 0.3 to 0.7mm glass substrate 9 for example by vacuum draw; Substrate travel mechanism 26, it is arranged on surface seat (the surface block) 11, with along the Y direction of Fig. 1 moving substrate support sector 21 flatly; And treating apparatus 3, its glass substrate 9 in the substrate support sector 21, and on the outer surface of photosensitive drums, form the toner image of a kind of color among R, G to be transferred or the B by Electronic Photographing Technology.Substrate support sector 21 comprises the electromotive force applying mechanism 22 that is located on the seating surface 210, its apply have predetermined distribution electromotive force so that toner image is transferred to glass substrate 9 from photosensitive drums.
Treating apparatus 3 is identical with treating apparatus 3 in first preferred embodiment, comprises the photosensitive drums 31 with bulging body 311 and photosensitive material 312.This photosensitive drums 31 is supported rotationally around the rotating shaft J1 of the directions X that is parallel to Fig. 1.In treating apparatus 3, around photosensitive drums 31, be disposed with drum charger 32, sub-image formation portion 33, development section 34, clearer 35 and drum discharger 36.
Similar with first preferred embodiment, in the mobile route of the each several part of photosensitive material 312, near the outer surface of photosensitive material 312, this part is the transfer position that the toner on the outer surface of photosensitive material 312 is transferred to the upper surface of glass substrate 9 to glass substrate 9 in the substrate support sector 21 between development section 34 and clearer 35.This transfer position is the position of fixing with respect to treating apparatus 3.
Figure 11 is the vertical view that substrate support sector 21 is shown.As shown in Figure 10 and Figure 11, substrate support sector 21 has tabular insulating component 221 and a plurality of lineation electrode 222, each lineation electrode 222 all extends along the direction (directions X) perpendicular to the direct of travel (Y direction) of substrate travel mechanism 26, and described a plurality of lineation electrode 222 along this direct of travel with spaced set and imbed in the insulating component 221.Although for the ease of diagram, thicker at the lineation electrode 222 shown in Figure 10 and Figure 11, in fact, in insulating component 221, imbed a large amount of thin lineation electrodes 222 (width of each lineation electrode 222 for example is approximately 1.0mm).Although figure 10 illustrates the longitudinal cross-section of substrate support sector 21, omitted the detail sections line in the cross section.
The surface of described a plurality of lineation electrode 222 is concordant each other with the surface of insulating component 221, and these surfaces cover by resistance material 223, and a surface of resistance material 223 is the seating surfaces 210 that are used to support glass substrate 9.Seating surface 210 has rigidity and is comprising the surface that forms on the member of assembly of resistance material 223 and downside thereof, thereby can prevent by the bending that pressure caused in the transfer printing.As shown in figure 11, two adjacent lineation electrodes 222 are connected to each other by resistive element 224, and the resistive element between a plurality of lineation electrode 222 224 has identical resistance value.As shown in figure 10, be formed with a plurality of through hole 221a (only shown in Figure 10), the diameter of each through hole 221a is all very little, described through hole 221a passes and is present between the lineation electrode 222 (promptly, between per two lineation electrodes) insulating component 221 and resistance material 223, and be provided with support body 211 below insulating component 221, the inside of this support body 211 has cavity, and this support body 211 is connected to substrate travel mechanism 26.Support body 211 is connected to vacuum pump 212, and because vacuum pump 212 aspirates from through hole 221a via the inside of support body 211, can firmly support glass substrate 9 that it is adsorbed on the seating surface 210 thus and can not move.
Figure 12 illustrates from the figure of the substrate travel mechanism 26 that Figure 10-Y side court+Y side is observed.The substrate travel mechanism 26 of Figure 10 and Figure 12 has two guide rails 261, and each guide rail 261 all extends along the Y direction on surface seat 11, and aligns along directions X.The a plurality of positions towards guide rail 261 at support body 211 are connected with a plurality of slide blocks 262 respectively, and by providing pressure-air to described slide block 262, with along Y direction supporting substrate support sector 21 movably with air supply department 263 that guide rail 261 combines in the noncontact mode.Substrate travel mechanism 26 also has linear motor 264, and the fixed component 2641 of linear motor 264 is fixed on the surface seat 11, and the mobile member 2642 of linear motor 264 is connected to substrate support sector 21.By driving linear motor 264, substrate support sector 21 and glass substrate 9 move reposefully along the Y direction.
As shown in figure 11, substrate support sector 21-there is not resistance material 223 on the X side, thus expose the end of a plurality of lineation electrode 222.As shown in Figure 10 and Figure 11, in the zone that expose the end of lineation electrode 222, be provided with 225 and two auxiliary electromotive force rollers of transfer printing electromotive force roller (the first electromotive force applying unit) (the second electromotive force applying unit) 226, wherein transfer printing electromotive force roller 225 is with when lineation electrode 222 contacts, with the transfer printing electromotive force is that (for example+300V) be applied to 222, two the auxiliary electromotive force rollers 226 of lineation electrode that are positioned at transfer position is separated with transfer position left and to the right first electromotive force.A plurality of auxiliary electromotive force rollers 226 with second electromotive force (for example-1000V, hereinafter, be called " auxiliary electromotive force ") (than transfer printing electromotive force more near the surface potential of photosensitive material 312) towards the direct of travel of substrate support sector 21 and the direction opposite with this direct of travel, be applied to and lineation electrode 222 that transfer position is provided with at a distance of preset distance (for example 4cm).Transfer printing electromotive force roller 225 is connected to transfer printing electromotive force power supply 227 to apply the transfer printing electromotive force, and auxiliary electromotive force roller 226 is connected to auxiliary electromotive force power supply 228 to apply auxiliary electromotive force.Transfer printing electromotive force roller 225 and auxiliary electromotive force roller 226 are by the extremely surperficial seat 11 of unshowned supporting member positioning and fixing, and by moving of substrate support sector 21, transfer printing electromotive force roller 225 contacts with a plurality of lineation electrodes 222 in turn with auxiliary electromotive force roller 226, apply the electrode switching mechanism to play electromotive force, this electromotive force applies the electrode switching mechanism and switches the lineation electrode 222 that is applied with transfer printing electromotive force and auxiliary electromotive force in turn.
All by coat forming of central electrode on every side with conductive elastomer (for example rubber), described central electrode is applied with transfer printing electromotive force or auxiliary electromotive force to each roller in transfer printing electromotive force roller 225 and the auxiliary electromotive force roller 226.Thus, even roller also can be out of shape between adjacent lineation electrode 222, thereby contact with arbitrary lineation electrode 222 all the time can move in substrate support sector 21 time.Therefore, when substrate support sector 21 moved, transfer printing electromotive force and auxiliary electromotive force were continuously applied to arbitrary lineation electrode 222.For example, be that spacing between 1mm, the lineation electrode 222 is under the situation of 2mm at the width of lineation electrode 222, transfer printing electromotive force roller 225 is 1.1mm or bigger along the contact width of Y direction.If transfer roll 225 contacts with three or more lineation electrodes 222 simultaneously, then disadvantageously, high potential can be applied to the position beyond the transfer position, thereby preferably, the contact width of transfer printing electromotive force roller 225 is restricted to 2.9mm or littler.
Because transfer printing electromotive force roller 225 and auxiliary electromotive force roller 226 form by resilient material, therefore can easily desired potential be applied to lineation electrode 222, and can not cause any damage lineation electrode 222.Each roller in transfer printing electromotive force roller 225 and the auxiliary electromotive force roller 226 all can be conductivity type sponge roller rather than conductive rubber roller, and wherein the sponge roller can pass adjacent lineation electrode 222 and flatten.
Insulating component 221, lineation electrode 222, resistance material 223, resistive element 224, transfer printing electromotive force roller 225, auxiliary electromotive force roller 226, transfer printing electromotive force power supply 227, auxiliary electromotive force power supply 228 etc. are formed electromotive force applying mechanisms 22, with will have predetermined distribution be used for toner image is applied to seating surface 210 from the electromotive force that photosensitive drums 31 is transferred to glass substrate 9.
Figure 13 is the process flow diagram that is illustrated in the operating process of the imaging device 1b that forms toner image on the glass substrate 9.The step S213 to S216 of Figure 13 shows the operating process at the part of photosensitive material 312, and in fact, for whole photosensitive material 312, these steps are almost carried out simultaneously.
At first, in the imaging device 1b of Figure 10, glass substrate 9 is arranged on the seating surface 210, this seating surface 210 is the upper surface of resistance material 223, and vacuum pump 212 aspirates by through hole 221a, thereby is supported on (step S211) on the seating surface 210 on the seating surface 210 so that glass substrate 9 is adsorbed on.Then, around rotating shaft J1 (along the rotation direction of being indicated by the arrow 71 of Figure 10) rotation deasil, glass substrate 9 beginnings are simultaneously moved (step S212a and S212b) with constant speed court+Y direction with constant rotational speed in photosensitive drums 31 beginnings.In treating apparatus 3, rotation by photosensitive drums 31, the photosensitive material 312 of similar cylindrical drum by rotating shaft J1 with respect to peripheral assembly (promptly, drum charger 32, sub-image formation portion 33, development section 34, clearer 35 and drum discharger 36) rotate continuously, these peripheral assemblies begin photosensitive material 312 is handled.In the glass substrate 9 of this preferred embodiment, go up the black matrix" that forms dot matrix at image transfer printing this upper surface (that is, towards the surface for the treatment of apparatus 3, needing not to be normality is the surface that physics makes progress) thereon in advance by other device.
Drum charger 32 is applied to electric charge the arrival of photosensitive material 312 and this drum charger 32 part (hereinafter, being called " target part ") in the face of the position in turn, with equably with the surface charging (step S213) of this target part.Move to charged target partial continuous the irradiation position of the light that sub-image formation portion 33 sends.Sub-image formation portion 33 has light emitting diode (LED) array as light source, is provided with a plurality of LED that are used to send predetermined wavelength light in this led array.Sub-image formation portion 33 receives the corresponding view data of toner color with treating apparatus 3 in the view data of the color component that the image by the pattern of display color optical filter produces, and sends the light that is used for imaging to photosensitive material 312 according to this view data.The target of photosensitive material 312 part by light-struck part in, lip-deep electric charge moves in the photosensitive material 312 and is removed.Since photosensitive material 312 not by light-struck part retainer belt electricity condition, therefore on the surface of photosensitive material 312, form CHARGE DISTRIBUTION image (that is electrostatic latent image) (step S214).The light source of sub-image formation portion 33 needn't be defined as LED, also can be combination of for example semiconductor laser, lamp and liquid crystal light valve etc.
The part that is formed with electrostatic latent image of photosensitive drums 31 (target part) moves to towards the position of development section 34, and the developer roll 341 of development section 34 is applied to electrostatic latent image (step S215) with liquid toner (being dispersed in the solvent and charged toner) then.At this moment, the charged toner that polarity is identical with the surface polarity of photosensitive material 312 only is applied on the part that the electric charge of the target part of photosensitive material 312 has been removed, so that latent electrostatic image developing.That is to say, on the target part of photosensitive material 312, form toner image.May also have another kind of situation, that is, the polarity charged toner opposite with the surface polarity of photosensitive material 312 is attached to the live part on the photosensitive material 312.
Then, target partly arrives and the hithermost transfer position of the upper surface of glass substrate 9, and transfer position accurately edge+Y direction move with speed (tangential speed in the outer surface of photosensitive drums 31, the vertical part) with rotating shaft J1 according to the rotating speed of photosensitive drums 31.Substrate travel mechanism 26 is on upper surface, along as the direct of travel of target part+the Y direction, and with target part at the identical speed of transfer position gait of march, mobile glass substrate 9, thereby the target of photosensitive material 312 partly begins to contact with the upper surface of glass substrate 9 in transfer position (glass substrate and photosensitive material are not must be in contact with one another each other yet, below identical therewith).At this moment, electromotive force with the distribution that will be described below by resistance material 223 and lineation electrode 222, be applied to glass substrate 9 via transfer printing electromotive force roller 225 and auxiliary electromotive force roller 226 with upper surface opposed major surfaces (lower surface), thereby the upper surface of glass substrate 9 has the opposite polarity electromotive force of the toner of polarity and transfer position.Therefore, the toner on the target of photosensitive material 312 part moves to the upper surface of glass substrate 9, thereby finishes the transfer printing (step S216) that utilizes electric field.After the whole operation of explanation imaging device 1b, describe the function that the electromotive force applying mechanism 22 that comprises transfer printing electromotive force roller 225, auxiliary electromotive force roller 226 etc. is transferred to toner glass substrate 9 again in detail.
Move to the target partial continuous position of clearer 35, and clearer 35 can be by removing unnecessary material, for example remain on the target part of photosensitive material 312 toner (in other words, be not transferred to the toner of glass substrate 9), come the surface of clean feel luminescent material 312, thereby make photosensitive material 312 mechanically return original state.Then, by drum discharger 36 with rayed photosensitive material 312 removing electric charge, thereby electrically return original state, wherein this drum discharger 36 has the combination of lamp and filtrator or LED etc.
Because the operation of step S213 to S216 is almost carried out on the each several part of photosensitive material 312 simultaneously, and each operation is carried out on the each several part that arrives transfer position in turn of photosensitive material 312 continuously, therefore final, the whole toner image on the outer surface of photosensitive material 312 is transferred to the upper surface of glass substrate 9 in transfer position.When being completed for printing on the whole glass substrate 9, photosensitive drums 31 stops operating, and substrate travel mechanism 202 also stops, thereby the printing operation of imaging device 1b finishes (step S217a and S217b).Thereby, on the entire upper surface of glass substrate 9, be completed into a kind of toner image of color.
As mentioned above, in fact, prepare and three kinds of color R, G and corresponding three imaging devices of B, and when the toner image that forms a kind of color on glass substrate 9 was finished, glass substrate 9 was sent to next imaging device to form down a kind of toner image of color.By this operation, on glass substrate 9, form the toner image of three kinds of color R, G and B by three imaging devices, and finally pass through fixing device heats and photographic fixing, thereby be fixed on the glass substrate 9.Like this, colored filter completes.
Then, will describe the function of the electromotive force applying mechanism 22 among the imaging device 1b with reference to Figure 14 in detail.The upside of Figure 14 shows the Potential Distribution that go up to form at the lower surface of resistance material 223 (upper surface of insulating component 221 and a plurality of lineation electrode 222), and the downside of Figure 14 shows and the corresponding a plurality of lineation electrodes 222 of Potential Distributing and transfer printing electromotive force roller 225 and auxiliary electromotive force roller 226 between contact condition.In Figure 14, represent by Reference numeral 222a with the lineation electrode 222 that transfer printing electromotive force roller 225 contacts in transfer position, and representing by Reference numeral 222b at a distance of the position of preset distance, the lineation electrode 222 that contacts with auxiliary electromotive force roller 226 with lineation electrode 222a.
The auxiliary electromotive force that is applied by auxiliary electromotive force roller 226 is the opposite polarity electromotive force (it can be ground potential) of polarity and transfer printing electromotive force as shown in figure 14, and the electric potential difference that produces between lineation electrode 222a and the lineation electrode 222b is delivered to electric current a plurality of (individual for " n " hereinafter) resistive element 224 that is connected in series between lineation electrode 222a and lineation electrode 222b.Therefore, shown in the upside of Figure 14, every a spacing (spacing of lineation electrode 222), the Potential Distributing that forms on the insulating component 221 between transfer printing electromotive force roller 225 and the auxiliary electromotive force roller 226 and the upper surface of lineation electrode 222 just changes 1/n (1/n of the electric potential difference between the roller 225 and 226).
Therefore, electromotive force with following distribution provides to glass substrate 9 and upper surface facing surfaces (lower surface) via seating surface 210, and this is distributed as: the difference between the surface potential of this electromotive force and photosensitive material 312 is along with reducing greatly and gradually towards the direct of travel of substrate support sector 21 and the distance change of reverse direction and transfer position thereof.Therefore, same on the upper surface of glass substrate 9, (indirectly) provide the electromotive force with following distribution, promptly the difference between the surface potential of this electromotive force and photosensitive material 312 is along with reducing greatly and gradually towards the direct of travel of substrate support sector 21 and the distance change of reverse direction and transfer position thereof.Because the slit between the outer surface of photosensitive material 312 and the upper surface of glass substrate 9 increases along with the distance with transfer position becomes greatly and gradually, the electric field in the slit diminishes greatly and sharp along with the distance with transfer position becomes.Therefore, can prevent the discharge that (or inhibition) caused by following phenomenon, this phenomenon is: near transfer position, electric field in the slit between the outer surface of photosensitive material 312 and the glass substrate 9 becomes the electric breakdown field in this slit or higher electric field, thereby can toner image be transferred on the glass substrate 9 with high precision.
Electromotive force on the photosensitive drums 31 can for transfer printing electromotive force and auxiliary electromotive force one of them, and in this case, the electromotive force that will have following distribution provides to the upper surface of glass substrate 9, and this is distributed as: the difference between the surface potential of this electromotive force and photosensitive material 312 becomes a certain intermediate point in the zone that is decreased to greatly and gradually from transfer printing electromotive force roller 225 to auxiliary electromotive force roller 226 along with the distance with transfer position.Because the upper surface of insulating component 221 is coated with resistance material 223, and glass substrate 9 is supported on this insulating component 221, therefore in fact, in the Potential Distributing of the upper surface of glass substrate 9, the maximal value of electromotive force and minimum value are all near ground potential, compare with the Potential Distributing shown in Figure 14 upside, the jump of the electromotive force of the position of lineation electrode 222 (step difference) becomes more smooth.
The resistance value that the resistance value of resistive element 224 should be lower than the resistance material 223 between two adjacent lineation electrodes 222 (is not less than 10
3Ω and be not higher than 10
9Ω is preferably and is not less than 10
5Ω and be not higher than 10
9Ω, for example 10
8Ω).This will make electric current be easier to flow in resistive element 224, stably to form the Potential Distributing of expectation on upper surface.By surface coverage resistance material 223 with lineation electrode 222, can easily form and have desirable smooth Potential Distributing to prevent discharge, even and when transfer printing electromotive force roller 225 is between two adjacent lineation electrodes 222, also can easily make the Potential Distributing of part, transfer position place even.If can form stable Potential Distributing, then nature can omit resistive element 224.
When the substrate support sector 21 that is formed with above-mentioned Potential Distributing follows by substrate travel mechanism 26 that into direction (+Y direction) is mobile, the moving synchronously of the lineation electrode 222 that is applied with transfer printing electromotive force and auxiliary electromotive force and substrate support sector 21, switch continuously with respect to-Y direction, keep the relative position relation between transfer printing electromotive force roller 225 and the auxiliary electromotive force roller 226 simultaneously, and keep around the Potential Distributing of transfer position formation.Therefore, whole toner image stably can be transferred to glass substrate 9 from photosensitive drums 31.
As mentioned above, in the imaging device 1b of this preferred embodiment, because glass substrate 9 is supported on the plane seating surface 210 that is formed on the member with rigidity, therefore can prevent that glass substrate 9 from moving, accurately toner image is transferred to glass substrate 9 from photosensitive drums 31.And, because will have the electromotive force of following distribution provides to the upper surface of glass substrate 9, this is distributed as: the difference between the surface potential of this electromotive force and photosensitive drums 31 reduces greatly and gradually along with the distance with transfer position becomes, direct of travel one side that therefore can prevent transfer position with and opposite side on produce discharge, thereby can avoid interference the toner image on the toner image that is transferred on the glass substrate 9 and the photosensitive material 312 to be transferred.
Figure 15 is the figure that illustrates according to the imaging device 1c of the 4th preferred embodiment of the present invention.This imaging device 1c has following structure, has wherein omitted the resistance material 223 among the imaging device 1b of Figure 10, and other element is identical with the imaging device 1b of Figure 10, and the use Reference numeral identical with Figure 10 represented components identical.Particularly, in imaging device 1c, in a plurality of lineation electrodes 222 each is all extended along the direction perpendicular to the direct of travel of substrate support sector 21, described a plurality of lineation electrode 222 is equidistantly to follow into direction setting, and expose from seating surface 210, and insulating component 221 appears between the adjacent lineation electrode 222, and insulating component 221 forms plane seating surfaces 210 with a plurality of lineation electrodes 222.Seating surface 210 has rigidity and is comprising the surface that forms on the member of lineation electrode 222, insulating component 221 etc., thereby can prevent the bending owing to pressure when transfer printing.Then, vacuum pump 212 aspirates via a plurality of through hole 221a, each described through hole 221a all has very little diameter, and passes the insulating component 221 between a plurality of lineation electrodes 222, thereby glass substrate 9 is supported on the seating surface 210 by absorption and can move.
In order in imaging device 1c, to make colored filter, similar with the imaging device 1b of Figure 10, be supported on seating surface 210 (it is the upper surface of insulating component 221 and lineation electrode 222) at glass substrate 9 and go up (Figure 13: step S211), and photosensitive drums 31 begins to rotate, glass substrate 9 begins to be moved (step S212a and S212b) afterwards, charged photosensitive material 312 by rayed to form electrostatic latent image (step S213 and S214), and wet color toner is applied to the electrostatic latent image on the photosensitive material 312, so that latent electrostatic image developing (step S215).Then, the toner on the photosensitive material 312 is transferred to glass substrate 9 (step S216) in transfer position.When the whole toner image on the photosensitive material 312 was transferred on the glass substrate 9 fully, the rotation of photosensitive drums 31 and the mobile of glass substrate 9 stopped, thus the EO of imaging (step S217a and S217b) on the glass substrate 9.
In imaging device 1c, with imaging device 1b similarly, two adjacent lineation electrodes 222 in a plurality of lineation electrodes 222 are by resistive element 224 be connected to each other (seeing Figure 14), and electromotive force is applied to lineation electrode 222 from transfer printing electromotive force power supply 227 and auxiliary electromotive force power supply 228 via transfer printing electromotive force roller 225 and auxiliary electromotive force roller 226, thereby forms the Potential Distributing shown in the upside of Figure 14 on the upper surface of insulating component 221.Thus, with the first and the 3rd preferred embodiment similarly, electromotive force with following distribution via seating surface 210 provide to glass substrate 9 with the upper surface opposing lower surface, this is distributed as: the difference between the surface potential of this electromotive force and photosensitive material 312 reduces greatly and gradually along with the distance towards the direct of travel of substrate support sector 21 and reverse direction and transfer position becomes.Therefore, the electromotive force that will have similar distribution provides to this upper surface, in case produce discharge near photosensitive material 312 the spline seal position and the slit between the glass substrate 9, thus can image be transferred to substrate with high precision.
In imaging device 1c, owing to omitted resistance material 223, structure that therefore can simplified apparatus.Therefore if the transfer printing object of image is a glass substrate 9,, also can make the Potential Distributing on the upper surface of glass substrate 9 level and smooth even without resistance material 223 then because this object has enough thickness.
Figure 16 is the structural drawing that illustrates according to the imaging device 1d of the 5th preferred embodiment.In the imaging device 1d of Figure 16, the intermediate transfer portion 25 with intermediate transfer member 251 is set, and the toner image on the photosensitive drums 31 is transferred to indirectly on the glass substrate 9 by intermediate transfer member 251.Particularly, intermediate transfer member 251 is the annular construction member such as flat rubber belting, and it is formed by dielectric material, and is set to and can contacts with 252b with two roller 252a from the outside.One of them roller 252a is connected to motor, and by driving this motor, intermediate transfer member 251 contacts with the part that is formed with toner image of photosensitive drums 31 when outer surface rotates.This DC power supply 253 is connected with another roller 252b.
In the imaging device 1d of Figure 16, be transferred on the intermediate transfer member 251 of rotation by the electromotive force that applies by roller 252b in the toner image that forms on the photosensitive material 312 by sub-image formation portion 33, development section 34 etc.The part that is formed with toner image of intermediate transfer member 251 moves to glass substrate 9, thereby the toner image on the intermediate transfer member 251 is transferred on the glass substrate 9.At this moment, the electromotive force that has with the 3rd preferred embodiment same distribution provides to the upper surface of glass substrate 9 by transfer printing electromotive force roller 225 and auxiliary electromotive force roller 226, thereby can the transfer printing toner image, prevents near the discharge the transfer position simultaneously.
In the imaging device 1d of Figure 16, glass substrate 9 when imaging along Figure 16-the Y direction moves.And, in imaging device 1b to 1d, can be following another kind of situation, promptly omit development section 34, the opposite polarity transfer printing electromotive force of the electric charge of polarity and electrostatic latent image is applied to glass substrate 9 by transfer printing electromotive force roller 225, and, perhaps will be transferred on the glass substrate 9 from the electrostatic latent image that photosensitive material 312 is transferred on the intermediate transfer member 251 with the electrostatic latent image on the photosensitive material 312.
Therefore, in imaging device 1b to 1d, the original image maintaining part plays in photosensitive drums 31 or intermediate transfer portion 25, this original image maintaining part makes such as the annular construction member of cylindrical drum or flat rubber belting along its outer surface (this original image is toner image or the electrostatic latent image to glass substrate 9 to be transferred) that is formed with original image and rotates, thereby the original image of the object to glass substrate 9 to be transferred is moved to transfer position and transfer printing on glass substrate 9.Can be following another kind of situation, many contact pilotages (it is one group of pin electrode) promptly are set as sub-image formation portion, in the original image maintaining part, be provided with the annular construction member that forms by dielectric material, voltage is applied to a plurality of pin electrodes of facing with the outer surface of annular construction member, and be provided with the slit between pin electrode and the annular construction member so that discharge between the tip of pin electrode and the annular construction member, thereby the outer surface that electric charge is applied to annular construction member is to form electrostatic latent image.
Although described the imaging device 1b to 1d of the 3rd to the 5th preferred embodiment above, imaging device 1b to 1d can have other the various variations except that above-mentioned example.
Although in the 3rd to the 5th preferred embodiment, when imaging, auxiliary electromotive force roller 226 is arranged on the both sides of transfer position along the Y direction that is parallel to the direct of travel of glass substrate 9, auxiliary electromotive force roller 226 also can only be arranged on transfer position+the Y side or-the Y side on.But, should be transferred to viewpoint on the glass substrate 9 from photosensitive material 312 with high precision from toner image, be preferably and not only on a side of transfer position, be provided with auxiliary electromotive force roller 226, and on opposite side, also should be provided with another similarly auxiliary electromotive force roller 226, and similar with the 3rd to the 5th preferred embodiment, should prevent transfer position+Y or-produce discharge in the photosensitive material 312 of Y side and the slit between the glass substrate 9.
A plurality of lineation electrodes 222 among the imaging device 1b needn't expose from insulating component 221, can imbed as shown in figure 17 in the resistance material 223, perhaps also can be embedded in the lower face side of resistance material 223 as shown in figure 18.Under any circumstance, the part of each lineation electrode 222 is along the longitudinal direction exposed from resistance material 223, and the part of exposing contacts with auxiliary electromotive force roller 226 with transfer printing electromotive force roller 225, the distribution electromotive force is applied to the upper surface of glass substrate 9.
A plurality of through hole 221a that glass substrate 9 is adsorbed on the seating surface 210 are not in the insulating component 221 that only is formed between a plurality of lineation electrodes 222, if less than the width of lineation electrode 222, then through hole 221a also can be formed in the lineation electrode 222 diameter of through hole 221a fully.Glass substrate 9 can mechanically be supported on the seating surface 210.
Although in the 3rd to the 5th preferred embodiment, the number of the roller that contacts with lineation electrode 222 is three, also four or more a plurality of roller can be set on lineation electrode 222, to obtain more stable Potential Distributing.
Electromotive force applying mechanism 22 is not to have roller (transfer printing electromotive force roller 225 and auxiliary electromotive force roller 226), also can have conduction brush, and as shown in figure 19, the metal or the conductive contact film 225a that are connected to transfer printing electromotive force power supply 227 and auxiliary electromotive force power supply 228 can contact with a plurality of lineation electrodes 222 by moving of substrate support sector 21 with 226a, thereby transfer printing electromotive force and auxiliary electromotive force are applied to lineation electrode 222.Can be applied with the switching of the lineation electrode 222 of electromotive force electrically.
In transfer position, photosensitive drums 31 can not contact with glass substrate 9, can be other situation, and for example, in transfer position, photosensitive drums 31 can be with very little slit near glass substrate 9, and is filled with the fluid that is used for transfer printing in this slit.If do not have the possibility of discharge, then only predetermined potential be applied to the seating surface 210 in the substrate support sector 21 at least at the transfer position place.
Imaging device 1b to 1d can be used for other purpose except making colored filter, object pending in imaging device 1b to 1d can also be semiconductor substrate, printed circuit board (PCB) etc. except glass substrate 9.In imaging device 1b to 1d, owing to prevented near the discharge the transfer position, even the substrate (it is formed by thicker material or the lower material of relative dielectric constant) that therefore will have low electric capacity is as object, also can be by applying high transfer printing electromotive force, and with high precision transfer printing and form toner image or electrostatic latent image on substrate.Thereby imaging device of the present invention can be handled the substrate of various materials.
Although be shown specifically and described the present invention, above-mentioned explanation all is illustrative and not restrictive in all its bearings.Therefore it should be understood that and to carry out numerous modifications and variations without departing from the scope of the invention.
Claims (35)
1. imaging device that is used on substrate forming toner image or electrostatic latent image, it comprises:
The original image maintaining part, it is used to make such as the annular construction member of cylindrical drum or the flat rubber belting outer surface along this original image maintaining part and rotates, and is formed with original image on this outer surface, and this original image is toner image or an electrostatic latent image to be transferred;
Travel mechanism, its first type surface that is used to make described substrate is at the predetermined the most approaching described outer surface of transfer position, make simultaneously described substrate with the part of described annular construction member in the identical speed of the gait of march of described transfer position, along a described first type surface, move with the direction identical with the direct of travel of the described part of described annular construction member; And
Transfer printing portion, its be used for electromotive force is applied to described substrate with a described first type surface facing surfaces in, described original image on the described outer surface is transferred to described substrate in described transfer position, described electromotive force has following distribution: promptly, the difference between the surface potential of described electromotive force and described annular construction member reduces greatly and gradually along with becoming towards described direct of travel or a direction opposite with described direct of travel, with the distance of described transfer position.
2. imaging device as claimed in claim 1, wherein, this imaging device also comprises:
Supporting member, it has surface of contact, and this surface of contact contacts described substrate and a described first type surface facing surfaces near described transfer position,
Wherein, described transfer printing portion produces the electromotive force with described distribution at the described surface of contact of described supporting member.
3. imaging device as claimed in claim 2, wherein:
Described supporting member is formed by the semiconductor material with constant thickness; And
Described transfer printing portion comprises:
The first electromotive force applying unit, its be used for first electromotive force be applied to described supporting member with described surface of contact facing surfaces on the position, the most approaching described transfer position in described position, and
The second electromotive force applying unit, it is used in the position along a described direction apart from the described first electromotive force applying unit preset distance, second electromotive force is applied to described supporting member, wherein, described second electromotive force is than the described surface potential of the more approaching described annular construction member of described first electromotive force, to produce the electromotive force with described distribution on described supporting member.
4. imaging device as claimed in claim 3, wherein:
The polarity of described second electromotive force is opposite with the polarity of described first electromotive force, and perhaps described second electromotive force is a ground potential.
5. imaging device as claimed in claim 3, wherein:
Described first electromotive force applying unit and the described second electromotive force applying unit one of them comprises roller at least, described roller contacts the described surface relative with described surface of contact of described supporting member, and described roller by coat with conductive elastomer the electrode be applied with described first electromotive force or described second electromotive force around form.
6. imaging device as claimed in claim 3, wherein:
The described first electromotive force applying unit is a corona discharger.
7. imaging device as claimed in claim 3, wherein:
The described second electromotive force applying unit comprises brush, and this brush is formed by conductive material, and contacts with the described surface relative with described surface of contact of described supporting member.
8. imaging device as claimed in claim 1, wherein:
The described Potential Distribution that is applied to the described surface relative with a described first type surface of described substrate by described transfer printing portion also has following distribution: promptly, the difference between the described surface potential of described electromotive force and described annular construction member along with towards with a described side in the opposite direction, become with the distance of described transfer position and to reduce greatly and gradually.
9. imaging device as claimed in claim 8, wherein, this imaging device also comprises:
Supporting member, it has surface of contact, and this surface of contact contacts described substrate and a described first type surface facing surfaces near described transfer position,
Wherein, described transfer printing portion produces the electromotive force with described distribution at the described surface of contact of described supporting member.
10. imaging device as claimed in claim 9, wherein:
Described supporting member is formed by the semiconductor material with constant thickness; And
Described transfer printing portion comprises:
The first electromotive force applying unit, its be used for first electromotive force be applied to described supporting member with described surface of contact facing surfaces on the position, the most approaching described transfer position in described position, and
Two second electromotive force applying units, described two second electromotive force applying units be used for respectively along a described direction and with a described side in the opposite direction apart from the position of the described first electromotive force applying unit preset distance, second electromotive force is applied to described supporting member, wherein, described second electromotive force is than the described surface potential of the more approaching described annular construction member of described first electromotive force, to produce the electromotive force with described distribution on described supporting member.
11. imaging device as claimed in claim 10, wherein:
The polarity of described second electromotive force is opposite with the polarity of described first electromotive force, and perhaps described second electromotive force is a ground potential.
12. imaging device as claimed in claim 10, wherein:
Described first electromotive force applying unit and described two second electromotive force applying units one of them comprises roller at least, described roller contacts with the described surface relative with described surface of contact of described supporting member, and described roller by coat with conductive elastomer the electrode be applied with described first electromotive force or described second electromotive force around form.
13. imaging device as claimed in claim 10, wherein:
The described first electromotive force applying unit is a corona discharger.
14. imaging device as claimed in claim 10, wherein:
Described two second electromotive force applying units include brush, and this brush is formed by conductive material, and contact with the described surface relative with described surface of contact of described supporting member.
15. imaging device as claimed in claim 1, wherein, this imaging device also comprises:
Substrate support sector, it is used for described substrate is supported in the plane seating surface, and this plane seating surface forms having on the member of rigidity;
Wherein, described travel mechanism moves described substrate support sector to move described substrate; And
Described transfer printing portion is the electromotive force applying mechanism that is used for described electromotive force is applied to described seating surface.
16. imaging device as claimed in claim 15, wherein:
Described electromotive force applying mechanism comprises:
A plurality of lineation electrodes, each described lineation electrode all extend along the direction vertical with described direct of travel, and described a plurality of lineation electrode is arranged in the described substrate support sector equally spacedly along described direct of travel;
Resistance material, it covers described a plurality of lineation electrode, and has the surface as described seating surface; And
Electromotive force applies the electrode switching mechanism, it is used for first electromotive force is applied to a lineation electrode that is positioned at described transfer position of described a plurality of lineation electrodes, to be applied in described a plurality of lineation electrode than second electromotive force of the surface potential of the more approaching described annular construction member of described first electromotive force, a lineation electrode along described direct of travel or the direction opposite apart from described transfer position preset distance with described direct of travel, and synchronously switch lineation electrode that is applied with described first electromotive force and the lineation electrode that is applied with described second electromotive force in turn with moving of described substrate support sector.
17. imaging device as claimed in claim 16, wherein:
Two adjacent in described a plurality of lineation electrode lineation electrodes are connected to each other by resistive element, and the resistance value of described resistive element is less than the resistance value of the described resistance material between described adjacent two lineation electrodes.
18. imaging device as claimed in claim 16, wherein:
Described electromotive force applying mechanism comprises roller, a lineation electrode in described roller and the described a plurality of lineation electrodes, that be applied with described first electromotive force or described second electromotive force contacts, and described roller by cover with conductive elastomer the central electrode that is applied with described first electromotive force or described second electromotive force around form.
19. imaging device as claimed in claim 16, wherein:
The polarity of described second electromotive force is opposite with the polarity of described first electromotive force, and perhaps described second electromotive force is a ground potential.
20. imaging device as claimed in claim 15, wherein:
Described electromotive force applying mechanism comprises:
A plurality of lineation electrodes, described a plurality of lineation electrodes expose from described seating surface, and are provided with equally spacedly along described direct of travel, and each described lineation electrode all extends along the direction vertical with described direct of travel;
Insulator, they are between described a plurality of lineation electrodes, to form described seating surface with described a plurality of lineation electrodes;
A plurality of resistive elements, each described resistive element all are used for connecting two adjacent lineation electrodes of described a plurality of lineation electrode; And
Electromotive force applies the electrode switching mechanism, it is used for first electromotive force is applied to a lineation electrode that is positioned at described transfer position of described a plurality of lineation electrodes, to be applied in described a plurality of lineation electrode than second electromotive force of the surface potential of the more approaching described annular construction member of described first electromotive force, a lineation electrode along described direct of travel or the direction opposite apart from described transfer position preset distance with described direct of travel, and synchronously switch lineation electrode that is applied with described first electromotive force and the lineation electrode that is applied with described second electromotive force in turn with moving of described substrate support sector.
21. imaging device as claimed in claim 20, wherein:
Described electromotive force applying mechanism comprises roller, a lineation electrode in described roller and the described a plurality of lineation electrodes, that be applied with described first electromotive force or described second electromotive force contacts, and described roller by cover with conductive elastomer the central electrode that is applied with described first electromotive force or described second electromotive force around form.
22. imaging device as claimed in claim 20, wherein:
The polarity of described second electromotive force is opposite with the polarity of described first electromotive force, and perhaps described second electromotive force is a ground potential.
23. imaging device as claimed in claim 15, wherein:
Described electromotive force applying mechanism comprises:
A plurality of lineation electrodes, each described lineation electrode all extend along the direction vertical with described direct of travel, and described a plurality of lineation electrode is arranged in the described substrate support sector equally spacedly along described direct of travel;
Resistance material, it covers described a plurality of lineation electrode, and has the surface as described seating surface; And
Electromotive force applies the electrode switching mechanism, it is used for first electromotive force is applied to a lineation electrode that is positioned at described transfer position of described a plurality of lineation electrodes, to be applied in described a plurality of lineation electrode than second electromotive force of the surface potential of the more approaching described annular construction member of described first electromotive force, the partial linear electrode along described direct of travel and the direction opposite apart from described transfer position apart from preset distance with described direct of travel, and synchronously switch lineation electrode that is applied with described first electromotive force and the lineation electrode that is applied with described second electromotive force in turn with moving of described substrate support sector.
24. imaging device as claimed in claim 23, wherein:
Two adjacent in described a plurality of lineation electrode lineation electrodes are connected to each other by resistive element, and the resistance value of described resistive element is less than the resistance value of the described resistance material between described adjacent two lineation electrodes.
25. imaging device as claimed in claim 23, wherein:
The polarity of described second electromotive force is opposite with the polarity of described first electromotive force, and perhaps described second electromotive force is a ground potential.
26. imaging device as claimed in claim 15, wherein:
Described electromotive force applying mechanism comprises:
A plurality of lineation electrodes, described a plurality of lineation electrodes expose from described seating surface, and are provided with equally spacedly along described direct of travel, and each described lineation electrode all extends along the direction vertical with described direct of travel;
Insulator, they are between described a plurality of lineation electrodes, to form described seating surface with described a plurality of lineation electrodes;
A plurality of resistive elements, each described resistive element all are used for connecting two adjacent lineation electrodes of described a plurality of lineation electrode; And
Electromotive force applies the electrode switching mechanism, it is used for first electromotive force is applied to a lineation electrode that is positioned at described transfer position of described a plurality of lineation electrodes, being positioned in described a plurality of lineation electrode be will be applied to than second electromotive force of the surface potential of the more approaching described annular construction member of described first electromotive force, and lineation electrode that is applied with described first electromotive force and the lineation electrode that is applied with described second electromotive force synchronously switched in turn with moving of described substrate support sector along described direct of travel and the partial linear electrode of direction apart from described transfer position apart from preset distance opposite with described direct of travel.
27. imaging device as claimed in claim 26, wherein:
The polarity of described second electromotive force is opposite with the polarity of described first electromotive force, and perhaps described second electromotive force is a ground potential.
28. imaging device as claimed in claim 1, wherein:
Described original image is by the liquid toner is applied to the toner image that the electrostatic latent image on the described outer surface forms.
29. a formation method that is used for forming toner image or electrostatic latent image on substrate, it may further comprise the steps:
Rotate step: the annular construction member such as cylindrical drum or flat rubber belting is rotated along its outer surface, be formed with original image on this outer surface, this original image is the original image to be transferred of toner image or electrostatic latent image;
Mobile step: a first type surface that makes described substrate is at the most approaching described outer surface of predetermined transfer position, make simultaneously described substrate with the part of described annular construction member in the identical speed of the gait of march of described transfer position, along a described first type surface, move with the direction identical with the direct of travel of the described part of described annular construction member, this moves step and said twisting step is carried out simultaneously; And
Transfer step: the original image on the described outer surface is transferred to described substrate in described transfer position, and this transfer step and described mobile step are carried out simultaneously,
Wherein, in described transfer step, the electromotive force that will have a following distribution is applied to described substrate and a described first type surface facing surfaces, described being distributed as: the difference between the surface potential of described electromotive force and described annular construction member reduces greatly and gradually along with the distance towards described direct of travel or direction opposite with described direct of travel and described transfer position becomes.
30. formation method as claimed in claim 29, wherein:
In described mobile step, described substrate is supported on the seating surface of plane, and this plane seating surface forms on the member with rigidity of substrate support sector, and moves described substrate support sector so that described substrate moves; And
In described transfer step, the electromotive force applying mechanism in the described substrate support sector is applied to described seating surface with described electromotive force.
31. formation method as claimed in claim 30, wherein:
Described electromotive force applying mechanism comprises:
A plurality of lineation electrodes, each described lineation electrode all extend along the direction vertical with described direct of travel, and described a plurality of lineation electrode is arranged in the described substrate support sector equally spacedly along described direct of travel; And
Resistance material, it covers described a plurality of lineation electrode, and has the surface as described seating surface; And
In described transfer step, first electromotive force is applied to a lineation electrode that is positioned at described transfer position in described a plurality of lineation electrode, to be applied to than second electromotive force of the surface potential of the more approaching described annular construction member of described first electromotive force in described a plurality of lineation electrode, a lineation electrode along described direct of travel or the direction opposite apart from described transfer position preset distance with described direct of travel, and synchronously switch lineation electrode that is applied with described first electromotive force and the lineation electrode that is applied with described second electromotive force in turn with moving of described substrate support sector.
32. formation method as claimed in claim 31, wherein:
The polarity of described second electromotive force is opposite with the polarity of described first electromotive force, and perhaps described second electromotive force is a ground potential.
33. formation method as claimed in claim 30, wherein:
Described electromotive force applying mechanism comprises:
A plurality of lineation electrodes, described a plurality of lineation electrodes expose from described seating surface, and are provided with equally spacedly along described direct of travel, and each described lineation electrode all extends along the direction vertical with described direct of travel;
Insulator, they are between described a plurality of lineation electrodes, to form described seating surface with described a plurality of lineation electrodes; And
A plurality of resistive elements, each described resistive element all are used for connecting two adjacent lineation electrodes of described a plurality of lineation electrode; And
In described transfer step, first electromotive force is applied to a lineation electrode that is positioned at described transfer position in described a plurality of lineation electrode, to be applied to than second electromotive force of the surface potential of the more approaching described annular construction member of described first electromotive force in described a plurality of lineation electrode, a lineation electrode along described direct of travel or the direction opposite apart from described transfer position preset distance with described direct of travel, and synchronously switch lineation electrode that is applied with described first electromotive force and the lineation electrode that is applied with described second electromotive force in turn with moving of described substrate support sector.
34. formation method as claimed in claim 33, wherein:
The polarity of described second electromotive force is opposite with the polarity of described first electromotive force, and perhaps described second electromotive force is a ground potential.
35. formation method as claimed in claim 29, wherein:
Described original image is by the liquid toner is applied to the toner image that the electrostatic latent image on the described outer surface forms.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005184806 | 2005-06-24 | ||
| JP2005184807 | 2005-06-24 | ||
| JP2005184806A JP2007003879A (en) | 2005-06-24 | 2005-06-24 | Image forming apparatus and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1885197A true CN1885197A (en) | 2006-12-27 |
Family
ID=37583384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610092759 Pending CN1885197A (en) | 2005-06-24 | 2006-06-13 | Image forming apparatus and image forming method |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2007003879A (en) |
| CN (1) | CN1885197A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102608888A (en) * | 2012-01-06 | 2012-07-25 | 珠海天威飞马打印耗材有限公司 | Laser imaging device and laser imaging method |
| CN103913978A (en) * | 2014-03-27 | 2014-07-09 | 陆永添 | Laser printing machine for ceramic |
| WO2014187228A1 (en) * | 2013-05-21 | 2014-11-27 | 珠海天威飞马打印耗材有限公司 | Processing box and laser flatbed printer |
| CN104308962A (en) * | 2014-09-30 | 2015-01-28 | 佛山市博晖机电有限公司 | Colored ceramic tile laser printing distributing method and laser printing device thereof |
| CN105690985A (en) * | 2014-12-15 | 2016-06-22 | 株式会社村田制作所 | Electronic member manufacture device |
| CN108291931A (en) * | 2015-12-03 | 2018-07-17 | 康宁股份有限公司 | Method and apparatus for the electrostatic charge for measuring base material |
| WO2024082993A1 (en) * | 2022-10-19 | 2024-04-25 | 长胜纺织科技发展(上海)有限公司 | Electrostatic-imaging-based transfer printing apparatus, system and method |
-
2005
- 2005-06-24 JP JP2005184806A patent/JP2007003879A/en active Pending
-
2006
- 2006-06-13 CN CN 200610092759 patent/CN1885197A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102608888A (en) * | 2012-01-06 | 2012-07-25 | 珠海天威飞马打印耗材有限公司 | Laser imaging device and laser imaging method |
| WO2014187228A1 (en) * | 2013-05-21 | 2014-11-27 | 珠海天威飞马打印耗材有限公司 | Processing box and laser flatbed printer |
| CN103913978A (en) * | 2014-03-27 | 2014-07-09 | 陆永添 | Laser printing machine for ceramic |
| CN103913978B (en) * | 2014-03-27 | 2016-08-24 | 陆永添 | Pottery laser printer |
| CN104308962A (en) * | 2014-09-30 | 2015-01-28 | 佛山市博晖机电有限公司 | Colored ceramic tile laser printing distributing method and laser printing device thereof |
| CN105690985A (en) * | 2014-12-15 | 2016-06-22 | 株式会社村田制作所 | Electronic member manufacture device |
| CN108291931A (en) * | 2015-12-03 | 2018-07-17 | 康宁股份有限公司 | Method and apparatus for the electrostatic charge for measuring base material |
| CN108291931B (en) * | 2015-12-03 | 2020-08-07 | 康宁股份有限公司 | Method and apparatus for measuring electrostatic charge of a substrate |
| WO2024082993A1 (en) * | 2022-10-19 | 2024-04-25 | 长胜纺织科技发展(上海)有限公司 | Electrostatic-imaging-based transfer printing apparatus, system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2007003879A (en) | 2007-01-11 |
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