CN103792806A - Image forming device - Google Patents
Image forming device Download PDFInfo
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- CN103792806A CN103792806A CN201310454889.6A CN201310454889A CN103792806A CN 103792806 A CN103792806 A CN 103792806A CN 201310454889 A CN201310454889 A CN 201310454889A CN 103792806 A CN103792806 A CN 103792806A
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- framework
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- electric conductivity
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Abstract
The invention is aimed at providing an image forming device capable of grounding a conductive gear board with a simple structure. The image forming device comprises a side framework (110) supporting an image forming portion, a gear mechanism (140) connected with the image forming portion, a gear board (300) with conductivity, a paper feeding roller, a carrying table, a lifting component (210), and a tension spring (220). The gear board is configured at position where the gear mechanism (140) is clamped between the framework (110) and the gear board in order to support the gear mechanism (140). The carrying table carries recording sheets to move the recording sheets towards the paper feeding roller. The lifting component (210) is conductive in order to move the carrying table towards the paper feeding roller. The tension spring is clamped to the lifting component (210) in order that the carrying table applies force to the lifting component (210) in a manner close to the paper feeding roller. The lifting component (210) is electrically grounded. The tension spring (220) is conductive and is clamped to a clamping portion (320) disposed on the gear board (300).
Description
Technical field
The present invention relates to a kind of image processing system with gear plate.
Background technology
In the past, have support the framework, gear of image forming part and and framework between clamp and the image processing system of the gear plate of Support Gear be widely known by the people (with reference to patent documentation 1).In such image processing system, usually, in order to reduce the error of axle base of gear, there is the situation that uses metal gear plate.
Prior art document
Patent documentation
Patent documentation 1: TOHKEMY 2008-15077 communique
Invent problem to be solved
But metal gear plate has electric conductivity, the static that lodges in gear plate surface in order to remove needs electrical grounding.But, in the case of the image processing system with resinous framework, can not make gear plate ground connection by framework, so need to add in addition earthy parts, there is the baroque worry of image processing system.
Summary of the invention
Therefore, the object of this invention is to provide a kind of image processing system that can make by easy structure the gear plate ground connection with electric conductivity.
Solve the means of problem
For achieving the above object, image processing system of the present invention has: the framework that supports image forming part; Gear with image forming part link; There is the gear plate of electric conductivity, this gear plate be disposed at and framework between clip the position of gear, Support Gear; Paper feed roller; Mounting table, this mounting table is placed with recording sheet, can make recording sheet move to paper feed roller; Lift parts, this lifts parts and has electric conductivity, and mounting table is moved to paper feed roller; And force application part, this force application part with lift parts and engage, make mounting table to paper feed roller closely to lifting the parts application of force.
Lift parts electrical grounding, force application part has electric conductivity, engages with the holding section that is arranged at gear plate.
According to such structure, the force application part with electric conductivity is sticked in the holding section that is arranged on gear plate, so gear plate lifts parts conducting by force application part and electrical grounding.Therefore, can make gear plate ground connection by easy structure.
In described structure, can be configured to, the profile of gear plate has recess, and this recess is formed as to the opposition side depression of lifting component side, and holding section is arranged at the side in a counter-lateral quadrents that clips recess.
According to such structure, can either prevent gear plate and the interference of lifting parts, again can be by easy structure to lifting the parts application of force.
Described image processing system can be configured to, and has: conveying roller, and this conveying roller has axle, and this axle has electric conductivity, is different from the member supporting of gear plate; And conducting parts, these conducting parts have electric conductivity, make axle and gear plate conducting.
According to such structure, the axle of conveying roller is by conducting parts and gear plate conducting, so can remove the electric charge accumulating in axle.
The described image processing system with conveying roller and conducting parts can be configured to, there is the bearing that can support rotatably described axle, this bearing has electric conductivity, gear plate has the 2nd holding section, the 2nd holding section is with respect to the opposition side of lifting parts and be positioned at holding section, and conducting parts connection shaft holds and the 2nd holding section.
Having in the described structure of conveying roller and conducting parts, can be configured to, gear plate has notch part, and from described axle axially, conveying roller is positioned at the position overlapping with notch part.
According to such structure, from axially seeing that conveying roller is positioned at the position overlapping with notch part, so the gear of easily using from axial assembling conveying roller.
In described structure, can be configured to, framework has: resinous the 1st framework, the 1st framework clips image forming part and is disposed at a side, fixed teeth wheel plate; And resinous the 2nd framework, the 2nd framework clips image forming part and is disposed at opposite side.
In this structure, image processing system can be configured to, and has: current-carrying plate, this current-carrying plate links the 1st framework and the 2nd framework, and this current-carrying plate with lift parts conducting; And there is the cap assembly of electric conductivity, and this cap assembly is fixed on the 2nd framework, covers power supply board, and with the grounding parts conducting of electrical grounding, current-carrying plate is by being connected and ground connection with cap assembly.
According to such structure, current-carrying plate is by being connected and ground connection with power supply board, so can make to lift parts (gear plate) ground connection by easy structure.
In described structure, can be configured to, lift parts and there is spindle unit, this spindle unit has electric conductivity, this spindle unit and current-carrying plate conducting.
According to such structure, can make simply to lift parts and current-carrying plate conducting by spindle unit.
Described image processing system can be configured to, and further has elastomeric element, and this elastomeric element has electric conductivity, for connecting conductive plate with lift parts, conducting current-carrying plate with lift parts.
According to such structure, can make simply to lift parts and current-carrying plate conducting by thering is the elastomeric element of electric conductivity.
Described image processing system can be configured to, and has: the drive source of being located at the 1st framework; The driving force of drive source is passed to the band transmission mechanism of gear; Have the scanning board of electric conductivity, this scanning board links the 1st framework and the 2nd framework, props up the scanner that stays at image forming part; And the drive source support component with electric conductivity in support drive source, scanner and drive source support component are connected and ground connection with cap assembly via scanning board.
According to such structure, scanner and drive source support component can pass through scanning board ground connection.
Invention effect
According to the present invention, the force application part with electric conductivity is sticked in the holding section that is located at gear plate, so can make gear plate lift parts conducting by force application part and electrical grounding.Therefore, can make gear plate ground connection by easy structure.
Accompanying drawing explanation
Fig. 1 is the cut-open view of the laser printer that relates to of embodiments of the present invention.
Fig. 2 is the figure that sees the gear plate that is disposed at laser printer from left side.
Fig. 3 is the A-A cut-open view of Fig. 2.
Fig. 4 represents current-carrying plate and lifts the stereographic map (a) of parts and represent to dispose the enlarged drawing (b) of part of elastomeric element.
Fig. 5 is the figure that sees the 2nd framework from right side.
Symbol description
1 laser printer
4 image forming parts
5 scanning elements
31A mounting table
32A paper feed roller
33 conveying rollers
34 carry roll shaft
100 frameworks
110 body side frames
111 the 1st frameworks
112 the 2nd frameworks
120 motor
130 band transfer devices
140 gear mechanisms
150 current-carrying plates
160 power supply boards
170 cap assemblies
190 scanning boards
200 motor support parts
210 lift parts
211 the 1st rotation axiss
220 tension springs
230 elastomeric elements
240 bearings
250 conducting parts
270 ground terminals
300 gear plates
310 recesses
311A, 311B sidepiece
320 holding sections
330 the 2nd holding sections
340 notch parts
P paper using
Embodiment
Next,, to an embodiment of the invention, at length describe with reference to suitable accompanying drawing.In addition, in the following description, first, after the one-piece construction of the laser printer that an embodiment of the invention are related to describes, characteristic of the present invention is at length described.
In explanation below, direction is to be used user when laser printer to describe as the direction of benchmark., in Fig. 1, using the left side towards paper as " front side ", using the right side towards paper as " rear side ", using the inboard towards paper as " left side ", using the front side towards paper as " right side ".In addition, using the above-below direction towards paper as " above-below direction ".
(schematic configuration of laser printer)
As shown in Figure 1, laser printer 1 has: apparatus main body 2, for supplying with as the sheet feed section 3 of the paper using P of an example of recording sheet and for form the image forming part 4 of image on paper using P.
Apparatus main body 2 has: framework 100, top cover 22, protecgulum 23.Framework 100 has the opening 21A for loading and unloading handle box 6 described later at an upper portion thereof, and has the insert port 21B for inserting paper using P in its front portion.
Specifically, the rotation axis 22A of top cover 22 is located at the upper proceeds posterolateral of apparatus main body 2, and top cover 22 can rotate as center upward using this rotation axis 22A.In addition, top cover 22 is the lids that cover from the rear end of apparatus main body 2 to anterior end, by rotating upward, and the upside of device for opening main body 2.
The rotation axis 23A of protecgulum 23 is located at the front side lower part of apparatus main body 2, and protecgulum 23 can forwards rotate as center using this rotation axis 23A.In addition, in Fig. 1, the state of the front side of the protecgulum 23 representing with double dot dash line in stopping device main body 2, the state of the front side of the protecgulum 23 representing with solid line in device for opening main body 2.Structure about framework 100 describes in the back.
Mounting table 31A is the plate-shaped member of mounting paper using P, is configured to and can makes the surperficial thereon paper using P of mounting move to paper feed roller 32A described later.In addition, by the parts 210 that lift described later, mounting table 31A is moved, rearward end can move to paper using P can be to the position of paper feed roller 32A paper supply.
Paper-feeding mechanism 32 mainly has: paper feed roller 32A, separate roller 32B, separating pad 32C.Paper feed roller 32A is the upstream side near the throughput direction of paper using P than separate roller 32B, is configured on the rear end of mounting table 31A.Separate roller 32B is relative with separating pad 32C to be configured.
As shown in Figure 3, conveying roller 33 has the conveying roll shaft 34 as an example of the axle of metal system (having electric conductivity).The pair of bearings 240 that this conveying roll shaft 34 is arranged at the 1st framework 111 described later and the 2nd framework 112 supports., conveying roller 33 is by the member supporting outside gear plate 300 described later.
A pair of bearing 240, carries roll shaft 34 in order to support rotatably, is the parts that formed by electroconductive resin, is supported by the shaft supporting part 111D of the shaft supporting part 112D of the 2nd framework 112 and the 1st framework 111.
The bearing 240 in left side is provided with the hook portion with electric conductivity 241 engaging with conducting parts 250 described later.
Return to Fig. 1, in sheet feed section 3, protecgulum is sidelong down forward and is formed after paper supply tray 31, paper using P is put on paper supply tray 31.Then, paper feed roller 32A contacts and rotates with the paper using P putting on paper supply tray 31, sends the paper using P putting on paper supply tray 31 thus to separate roller 32B, and the paper using P being sent is separated one by one between separate roller 32B and separating pad 32C.Then, paper using P is supplied to image forming part 4 by conveying roller 33.
Handle box 6 is positioned near the rear side central portion of device body 2, is arranged at the top of paper-feeding mechanism 32.Handle box 6 can be by opening 21A with respect to framework 100 towards upside front handling, have: photosensitive drums 61, make the toner image in photosensitive drums 61 be transferred to the transfer roll 62 of paper using P, not shown known charged device, developer roll, bed thickness confinement plate and toner reception room etc.
In this handle box 6, after the surface of the photosensitive drums 61 of rotation is charged equably by charged device, be exposed by the high-velocity scanning of the laser beam from scanning element 5.Thus, the current potential that is exposed part declines, and forms the electrostatic latent image based on view data on the surface of photosensitive drums 61.
Then, the toner in toner reception room is supplied to the electrostatic latent image of photosensitive drums 61 by developer roll, on the surface of photosensitive drums 61, form toner image.Afterwards, paper using P is transferred between photosensitive drums 61 and transfer roll 62, and the surperficial toner image that is carried on photosensitive drums 61 is transferred on paper using P.
Fixing device 7 is positioned at the upper proceeds posterolateral of device body 2, is disposed at the top of handle box 6, mainly has: warm-up mill 71 and backer roll 72.
Warm-up mill 71 is parts of heating paper using P, and side therein, is provided with the not shown thermals source such as halogen lamp.
Backer roll 72 be and warm-up mill 71 between clamping carry the parts of paper using P, be arranged at warm-up mill 71 tiltedly after upside.
Then,, in the fixing device 7 of this structure, pass through, in the process between warm-up mill 71 and backer roll 72, the toner being transferred on paper using P to be carried out to hot photographic fixing at paper using P.In addition, be transported to the distributing roller 8 of the downstream side that is disposed in fixing device 7 with the paper using P that fixing device 7 has carried out hot photographic fixing, be expelled to and discharge pallet 9 from this distributing roller 8.
(detailed construction of framework)
Next, the detailed construction of the framework 100 to constituent apparatus body 2 describes.
As shown in Figure 2 and Figure 3, framework 100 has the body side frame 110 as an example of framework.
The 1st framework 111 mainly has: as motor 120, band transmission mechanism 130, gear mechanism 140 and the gear plate 300 of an example of drive source.
Are the mechanisms that the driving force of motor 120 are passed to gear mechanism 140 with transmission mechanism 130, this tape transport 130 comprises: driving pulley 131, be with 132 and driven pulley 133.
Driving pulley 131 be disposed at can with the position of gear 121 interlocks, this driving pulley 131 comprises: the 131B of belt wheel portion forming integratedly with the gear part 131A of gear 121 interlocks and with gear part 131A.
Driven pulley 133 is disposed at the rear of the 1st framework 111, comprising: the 133B of belt wheel portion that transfers a driving force to the gear part 133A of gear mechanism 140 and form integratedly with gear part 133A.
With 132 being insulativity, be located between the 131B of belt wheel portion of driving pulley 131 and the 133B of belt wheel portion of driven pulley 133, the rotary driving force of driving pulley 131 is passed to driven pulley 133.
Gear mechanism 140 is to be passed to the mechanism of photosensitive drums 61 grades from the driving force of driven pulley transmission.This gear mechanism 140 comprises: drum gear 141, discharge gear mechanism 142, conveyance gear mechanism 143 and paper supply gear mechanism 144.
Discharging gear mechanism 142 is the mechanisms that transfer a driving force to distributing roller 8, and this discharge gear mechanism 142 is disposed at the top of driven pulley 133.
Discharge gear mechanism 142 comprises: by the discharge transmission gear 142A of the transmission of drive force with the gear part 133A interlock of driven pulley 133, by the 1st discharge neutral gear 142B of the transmission of drive force with discharge transmission gear 142A interlock, by the 2nd discharge neutral gear 142C of the transmission of drive force with the 1st discharge neutral gear 142B interlock and by the distributing roller gear 142D of transmission of drive force with the 2nd discharge neutral gear 142C interlock.
Conveyance gear mechanism 143 is the mechanisms that transfer a driving force to conveying roller 33, and this conveyance gear mechanism 143 is disposed at the oblique back lower place of driven pulley 133.This conveyance gear mechanism 143 comprises: with the transmission gear 143A of the gear part 133A interlock of driven pulley 133, be disposed at the 1st neutral gear 143B of the oblique back upper place of transmitting gear 143A and be disposed at the conveying roller gear 145 at the rear of the 1st neutral gear 143B.
Conveying roller gear 145 is to rotarily actuate the gear of conveying roller 33, this conveying roller gear 145 by with the 1st neutral gear 143B interlock transmission of drive force, described the 1st neutral gear 143B with transmit gear 143A interlock.In addition, the conveying roll shaft 34(that conveying roller gear 145 is located at conveying roller 33 is with reference to Fig. 3).
Paper supply gear mechanism 144 is the mechanisms that transfer a driving force to paper feed roller 32A and separate roller 32B, and this paper supply gear mechanism 144 is disposed at the below of conveyance gear mechanism 143.This paper supply gear mechanism 144 comprises: be disposed at the oblique front lower place of transmitting gear 143A the 2nd neutral gear 146, be disposed at the 2nd neutral gear 146 the oblique back lower place paper feed roller gear 144A and be disposed at the separate roller gear 144B of the oblique back upper place of paper feed roller gear 144A.
The 1st neutral gear 146 has: can with transmit gear 143A and paper feed roller gear 144A interlock gear part 146A, can not with the toothless portion) 146B that transmits gear 143A and paper feed roller gear 144A interlock, make to transmit gear 143A and gear part 146A interlock at official hour point, thereby transfer a driving force to paper feed roller gear 144A and separate roller gear 144B.
Paper feed roller gear 144A is the gear that rotarilys actuate paper feed roller 32A, and this paper feed roller gear 144A is by the transmission of drive force with the gear part 146A interlock of the 2nd neutral gear 146.
Separate roller gear 144B is the gear that rotarilys actuate separate roller 32B, and this separate roller gear 144B is by the transmission of drive force with the 144A interlock of paper feed roller gear.
In addition, as shown in Figure 3, framework 100 has: current-carrying plate 150, power supply board 160, cap assembly 170, metal parts 180, scanning board 190 and the motor support parts 200 as an example of drive source support component.
Current-carrying plate 150, for example, is formed by the plate of the such metal system of panel beating (having electric conductivity), and this current-carrying plate 150 is fixed on the 1st framework 111 and the 2nd framework 112 to link the mode of the bottom of the 1st framework 111 and the bottom of the 2nd framework 112.In addition, current-carrying plate 150, on fore-and-aft direction, is disposed at the rear side a little of the central portion of body side frame 110.
As shown in Figure 4 (a), be provided with to front and back respectively pair of holes 150A and hole 150B in left part and the right part of current-carrying plate 150. Hole 150A, 150B are the holes for the screw connecting at above-below direction is passed.By making not shown screw through hole 150A, 150B, screw in and be located at the not shown threaded hole of the 1st framework 111 and the 2nd framework 112, thereby the 1st framework 111 and the 2nd framework 112 are fixed on in the left part of current-carrying plate 150 and right part.
Current-carrying plate 150 is provided with: shaft supporting part 151, extension stop 153 and fixed part 154.
Hanging stop 153 is the parts of hooking elastomeric element 230 described later, is located at the right positions of the shaft supporting part 151 in left side.In addition, as shown in Figure 4 (b), the part that extension stop 153 is mentioned current-carrying plate 150 by cut-out arranges, and after giving prominence to upward, forwards forms agley.
Return to Fig. 4 (a), fixed part 154 is parts of fixing cap assembly 170 described later, and this fixed part 154 is formed as from the right part of current-carrying plate 150 outstanding upward.Fixed part 154 is provided with the fixed orifice 154A of perforation.This fixed part 154 is disposed at the position (with reference to Fig. 3) in the outside of the sidewall 112A that enters the 2nd framework 112.
Current-carrying plate 150 is lifted parts 210 and freely supports rotationally up and down.
Lifting parts 210 is parts that mounting table 31A is moved to paper feed roller 32A, and for example, the metal parts such by panel beating form.
Lifting parts 210 has: abutting part 212, and described abutting part is and the part of mounting table 31A butt; And stop hole 217 with the extension of hanging the relative configuration of stop 153.
Hanging only hole 217 is the parts of hooking elastomeric element 230.
For example, as shown in Figure 4 (b), elastomeric element 230 is the volute springs with electric conductivity, and rear end 231 is only hooked in hole 217 by extension, and anterior end 232 is only hooked in hole 153 by extension.So, can parts 210 and current-carrying plate 150 conducting simply will be lifted by elastomeric element 230.
Return to Fig. 4 (a), lift parts 210 and have: as the 1st rotation axis the 211, the 2nd rotation axis 213 and spring supporting portion 214 of an example of spindle unit.
The 1st rotation axis 211 is formed by electroconductive resin, and the 1st rotation axis 211 has: the axial region 211A being supported by the shaft supporting part 151 on the right side of current-carrying plate 150 and be fixed on the fixed part 211B that lifts parts 210.
The 2nd rotation axis 213 is formed by electroconductive resin, and the 2nd rotation axis 213 is supported by the shaft supporting part 151 in the left side of current-carrying plate 150.So, can parts 210 and current-carrying plate 150 conducting simply will be lifted by the 1st rotation axis 211 and the 2nd rotation axis 213.
The roughly L word shape (with reference to Fig. 2) that spring supporting portion 214 is formed as upward and extend at rear, this spring supporting portion 214 and the 2nd rotation axis 213 form integratedly.This spring supporting portion 214 has the hook portion 215 for engaging tension spring 220 in the upper end of the part of extending upward.
Tension spring 220 be make mounting table 31A near paper feed roller 32A to lifting the parts of parts 210 application of forces, this tension spring 220 has electric conductivity.The rearward end 221 of tension spring 220 is sticked in hook portion 215, and its leading section 222 is sticked in gear plate 300.
As shown in Figure 3, power supply board 160 is circuit substrates of the internal feed electric power to laser printer 1, and this power supply board 160 is disposed at the bottom of the 2nd framework 112.
In addition, as shown in Figure 3, bottom and upper end at the bottom surface side of cover portion 171 are provided with the mounting hole 173,174 for fixed cover parts 170, cap assembly 170, in mounting hole 173, be fixed in the fixed orifice 154A of current-carrying plate 150 by screw 113, in mounting hole 174, be fixed in the mounting hole 181 of metal parts 180 and be fixed on the fixed orifice 112B that is located at the 2nd framework 112 by screw 114.
Scanning board 190 is the parts with electric conductivity that support scanning element 5, this scanning board 190 and scanning element 5 conductings.In addition, scanning board 190 be formed as mode to link with the 1st framework 111 and the 2nd framework 112 to the left and right direction extend, be provided with a pair of fixed part 191 stretching out from both ends downwards at its both ends, left and right.
A pair of fixed part 191 is respectively equipped with mounting hole 191A, the fixed part 191 on right side is fixed on the 2nd framework 112 by screw 115, and the fixed part 191 in left side is being located in the fixed orifice 111B of the 1st framework 111 and is being fixed on the 1st framework 111 by screw 116 together with motor support parts 200 described later.Thus, scanning board 190 passes through screw 115 conductings, scanning board 190 and also conducting of motor support parts 200 with metal parts 180.
(structure of gear plate)
Next, the detailed construction of gear plate 300 is described.
Shown in Fig. 2, gear plate 300 as be fixed in the position of the roughly latter half of the 1st framework 111, has: a counter-lateral quadrents 311A and 311B, recess 310, holding section 320, the 2nd holding section 330 and notch part 340.
Sidepiece 311A is formed as forwards extending from the front end of the bottom of gear plate 300, and sidepiece 311B is formed as from rearward extending near the central authorities of the bottom of gear plate 300.And sidepiece 311A, 311B extend forwards, backwards and form, thereby the part to upside (lifting the opposition side of parts 210 sides) depression forming between them forms recess 310.This recess 310 is disposed at the position corresponding with lifting parts 210.
The bottom of the sidepiece 311A of front side (side) is located in holding section 320,, lifts the front of parts 210 that is, and this holding section 320 has the hook-shaped to front openings.The leading section 222 of tension spring 220 is sticked in this holding section 320, thus gear plate 300 by tension spring 220 with lift parts 210 conductings.
The upper rear end of the sidepiece 311B of rear side is located in the 2nd holding section 330.As shown in Figure 3, after the 2nd holding section 330 is formed as giving prominence to the right, the hook-shaped that stretch out downwards on its top, engaging has conducting parts 250.
Conducting parts 250 are the volute springs for example with electric conductivity, and its upper end 251 engages with hook portion 241, and its bottom 252 engages with the 2nd holding section 330.Like this, engage with the 2nd holding section 330 by the bottom 252 that makes conducting parts 250, gear plate 300 is by conducting parts 250 and bearing 240 and 34 conductings of conveying roll shaft.
Notch part 340 forwards caves in and forms at the upside of sidepiece 311B with the rear end lower of gear plate 300.In addition, conveying roller 33, from left and right directions (carrying the axial of roll shaft 34), is disposed at the position overlapping with notch part 340.Here for example, if do not there is the structure of notch part 340, can only before being assembled in to the 1st framework 111, gear plate 300 assemble conveying roller 33 and conveying roller gear 145.But in present embodiment, gear plate 300 has notch part 340, so even after gear plate 300 is assembled to the 1st framework 111, also can be from position assembling conveying roller 33 and the conveying roller gear 145 of notch part 340.Therefore, can improve the degree of freedom of assembly operation.
The laser printer 1 forming like that above, the 1st framework 111 of its fixed teeth wheel plate 300 is resinous, so can not make gear plate 300 ground connection by the 1st framework 111.But in the laser printer 1 of present embodiment, as shown in Figure 2, gear plate 300 is via tension spring 220 and lift parts 210 conductings.As shown in Figure 4 (a), this lifts parts 210 via the 1st rotation axis the 211, the 2nd rotation axis 213 and elastomeric element 230 and current-carrying plate 150 conductings.And, as shown in Fig. 3, Fig. 5, current-carrying plate 150 and 171 conductings of cover portion, cover portion 171 and ground terminal 270 conductings.
, gear plate 300, lift parts 210 and current-carrying plate 150 via cover portion 171 and ground terminal 270 conductings, electrical grounding.Therefore, can make gear plate 300 ground connection by easy structure.
In addition, carrying roll shaft 34 is metal (having electric conductivity), so the surperficial electric charge of the paper using P that easily accumulation is carried by conveying roller 33.But in the laser printer 1 of present embodiment, the bearing 240 of conveying roll shaft 34 and gear plate 300 are by 250 conductings of conducting parts.
, carry roll shaft 34 via bearing 240 and gear plate 300 and ground terminal 270 conductings, electrical grounding.Therefore, carrying on roll shaft 34 even if be accumulated in the charge accumulated on paper using P surface, also can the electric charge accumulating in carrying roll shaft 34 removed via gear plate 300.
In addition, as shown in Figure 2, with transmission mechanism 130 be with 132 to there is insulativity, so motor support parts 200 are and the structure of gear plate 300 not conductings.But, in the laser printer 1 of present embodiment, as shown in Figure 3, motor support parts 200 and scanning board 190 conductings.This scanning board 190 is via screw 115 and metal parts 180 conductings, metal parts 180 and 171 conductings of cover portion.
, motor support parts 200, scanning board 190 and metal parts 180 are via cover portion 171 and ground terminal 270 conductings, electrical grounding.Therefore, can make motor support parts 200 ground connection simply via scanning board 190.
In addition, scanning element 5 also with scanning board 190 conductings, so this scanning element 5 is via scanning board 190 and ground terminal 270 conductings, electrical grounding.Therefore, can make scanning element 5 ground connection simply via scanning board 190.
In addition, the sidepiece 311A of the front side (side) of recess 310 is located in the holding section 320 of gear plate 300, thus can prevent gear plate 300 and the interference of lifting parts 210, again can be by easy structure to lifting parts 210 application of forces.
Above, embodiments of the present invention are illustrated, but the present invention is not limited to above-mentioned embodiment.About concrete structure, can in the scope that does not depart from aim of the present invention, suitably change.
In above-mentioned embodiment, lift parts 210 by being connected and ground connection with cap assembly 170, but lift also direct ground connection of parts 210, also can be by making current-carrying plate 150 ground connection ground connection.
In above-mentioned embodiment, as force application part exemplified with tension spring 220, but the present invention is not limited to this, for example, can be also leaf spring, torsion spring.
In above-mentioned embodiment, to elastomeric element 230 exemplified with the volute spring with electric conductivity, but the present invention is not limited to this, for example, can be also conductive rubber.
In above-mentioned embodiment, to conducting parts 250 exemplified with the volute spring with electric conductivity, but the present invention is not limited to this, for example, can be also electroconductive resin.
Claims (9)
1. an image processing system, is characterized in that, has:
Support the framework of image forming part;
Gear with described image forming part link;
There is the gear plate of electric conductivity, described gear plate be disposed at and described framework between clip the position of described gear, support described gear;
Paper feed roller;
Mounting table, described mounting table is placed with recording sheet, can make described recording sheet move to described paper feed roller;
Lift parts, described in lift parts and there is electric conductivity, described mounting table is moved to described paper feed roller; And
Force application part, described force application part with described in lift parts and engage, make described mounting table to described paper feed roller closely to the described parts application of force of lifting,
The described parts electrical grounding that lifts,
Described force application part has electric conductivity, engages with the holding section that is arranged at described gear plate.
2. image processing system according to claim 1, is characterized in that, the profile of described gear plate has recess, and described recess is formed as the opposition side depression of lifting component side to described,
Described holding section is arranged at the side in a counter-lateral quadrents that clips described recess.
3. image processing system according to claim 1, is characterized in that, has:
Conveying roller, described conveying roller has axle, and this axle has electric conductivity, is different from the member supporting of described gear plate; And
Conducting parts, described conducting parts have electric conductivity, make described axle and described gear plate conducting.
4. image processing system according to claim 3, is characterized in that, has the bearing that can support rotatably described axle, and described bearing has electric conductivity,
Described gear plate has the 2nd holding section, and described the 2nd holding section is with respect to described opposition side of lifting parts and be positioned at described holding section,
Described conducting parts link described bearing and described the 2nd holding section.
5. image processing system according to claim 3, is characterized in that, described gear plate has notch part,
From described axle axially, described conveying roller is positioned at the position overlapping with described notch part.
6. according to the image processing system described in any one in claim 1 to 5, it is characterized in that, described framework has: resinous the 1st framework, and described the 1st framework clips described image forming part and is disposed at a side, fixing described gear plate; And resinous the 2nd framework, described the 2nd framework clips described image forming part and is disposed at opposite side,
This image processing system has: current-carrying plate, described current-carrying plate by described the 1st framework and described the 2nd framework link, and described current-carrying plate with described in lift parts conducting; And
Have the cap assembly of electric conductivity, described cap assembly is fixed on described the 2nd framework, covers power supply board, with the grounding parts conducting of electrical grounding,
Described current-carrying plate is by being connected and ground connection with described cap assembly.
7. image processing system according to claim 6, is characterized in that, described in lift parts and there is spindle unit, described spindle unit has electric conductivity, this spindle unit and described current-carrying plate conducting.
8. image processing system according to claim 6, is characterized in that, further has elastomeric element, and described elastomeric element has electric conductivity, for link described current-carrying plate with described in lift parts, described in conducting current-carrying plate with described in lift parts.
9. image processing system according to claim 6, is characterized in that, has:
Be located at the drive source of described the 1st framework;
The driving force of described drive source is passed to the band transmission mechanism of described gear;
Have the scanning board of electric conductivity, described scanning board links described the 1st framework and described the 2nd framework, props up the scanner that stays at described image forming part; And
Support the drive source support component with electric conductivity of described drive source,
Described scanner and described drive source support component are connected and ground connection with described cap assembly via described scanning board.
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| JP2012-240221 | 2012-10-31 | ||
| JP2012240221A JP5991142B2 (en) | 2012-10-31 | 2012-10-31 | Image forming apparatus |
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| CN103792806A true CN103792806A (en) | 2014-05-14 |
| CN103792806B CN103792806B (en) | 2016-08-24 |
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| CN (1) | CN103792806B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520463A (en) * | 2019-02-04 | 2020-08-11 | 兄弟工业株式会社 | Gear mechanism and image forming apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6579057B2 (en) * | 2016-08-18 | 2019-09-25 | 京セラドキュメントソリューションズ株式会社 | Image forming apparatus |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN103792806B (en) | 2016-08-24 |
| JP5991142B2 (en) | 2016-09-14 |
| JP2014089393A (en) | 2014-05-15 |
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