CN1734362A - Image forming apparatus - Google Patents

Abstract

A high-voltage circuit board and a main circuit board are arranged on the outer side surface of a left frame, and a conveyance path is provided so as to downwardly incline from a feed position near the uppermost part of the outer peripheral surface of a paper feed roller, toward an image formation position. Thus, the height position of an image forming section within a body casing can be lowered. As a result, the height of a laser printer can be made lower.

Description

Imaging device

Technical field

The present invention relates to a kind of imaging device, as laser printer.

Background technology

Before this, known imaging device such as laser printer comprise: be positioned at the apparatus main body bottom, can hold many paper boxes that are in the paper of stacked state; And be positioned at paper discharge tray device body upper, be formed with the paper of image in order to output.

In such imaging device, uppermost paper transmits towards the apparatus main body front side in the paper box.And, transmitting the paper that comes out from paper box makes its throughput direction change in the other direction at the leading section of apparatus main body, rear side along the transport path of pressing the fore-and-aft direction extension towards apparatus main body on paper box is carried, and makes its imaging when transport path is carried.The paper that is formed with image makes its throughput direction change in the other direction again in the rearward end of apparatus main body, and is exported from the paper discharge tray back by paper discharge tray.

With respect to the device rear side, the transport path that is provided is roughly level or is inclined upwardly slightly.Thereby, the appearance of having living space between the two of transport path and paper box, this spatial configuration has a control circuit board and a power supply circuit board, can reach the effective utilization (referring to for example JP-A-7-143300 and US2004/0095456A1) to space in the apparatus main body thus.

In the imaging device of electro-photographic scheme, dispose in apparatus main body: one is used for to come the scanning element of high-velocity scanning based on the laser beam of view data; An and cartridge processing that comprises charger, photosensitive drums, developer roll, transfer roll, clearer etc.

Dispose respectively in such imaging device: one adds the high-voltage power circuit plate of discharge bias, development bias voltage, transfer bias and cleaning bias voltage to charger; Developer roll; Transfer roll; And clearer, also dispose one and support motor to drive the gear sheet of photosensitive drums, developer roll and transfer roll etc., and dispose a cogwheel gearing to transmit driving force with rotation.

Proposed a kind of imaging device, wherein the power drive circuit board comprises high-voltage power circuit part, a motor and a drive part, and their arranged perpendicular are in circuit board surface respect to one another (referring to for example US6778197B1).

Summary of the invention

In recent years, the requirement of picture device volume and the requirement that reduces the imaging device height have appearred being reduced to.In the structure disclosed in JP-A-7-143300 and the US2004/0095456A1, the height of imaging device is still low inadequately, and circuit board is placed between transport path and the paper box, makes the height of imaging device further reduce the very difficulty that becomes.

In order to dwindle the volume of imaging device, preferably should carry out from the surface, the same side of apparatus main body to the driving force input and the electric power conveying of cartridge processing.In order to reach this purpose, high-voltage power circuit plate and gear sheet need be configured in the surface, the same side for cartridge processing.

But when high-voltage power circuit plate and gear sheet were configured in surface, the same side for cartridge processing, the bias voltage that is added by the high-voltage power circuit plate may leak electricity at gear sheet periphery.

The invention provides a kind of imaging device that it highly reduces.It is a kind of by high-voltage power circuit plate and gear sheet are configured in the device that the same side side obtains volume-diminished that the present invention also provides, and can prevent the imaging device that electric leakage takes place gear sheet periphery that is biased in that the high-voltage power circuit plate adds.

Imaging device according to a first aspect of the present invention provides comprises: a feed unit makes recording medoum feeding; One image-generating unit is formed on image on the recording medium of feed unit institute feeding; One output unit will form the output of record images medium through image-generating unit on it; One power supply circuit board is equipped with the power supply that a pair of image-generating unit transmits electric power on it, and observes from the lateral angles of recording medium, and this power supply circuit board is configured in wherein at least one side surface part of imaging device; One control circuit board, be equipped with on it one control image-generating unit controller, this control circuit board is configured in wherein at least one side surface part; And the transport path of a conveying recording medium, this transport path begins to slope down to the imaging position that image-generating unit forms image from the position that the recording medium of feed unit feeding breaks away from feed unit, and this transport path is configured to: feed unit picks up that recording medium is this to pick up direction and transport path carries this image formation state throughput direction of recording medium that is in the imaging position to be set at opposite each other; And this image formation state throughput direction also is set at opposite each other with this outbound course of recording medium of exporting process image-generating unit imaging on it.

Imaging device according to a second aspect of the present invention provides comprises: mutually opposition, first side and second side of a predetermined gap arranged between the two; One is in the image-generating unit that forms image between first side and second side on a recording medium; For image-generating unit, be disposed at this side of first side and produce the drive source of the driving force of image-generating unit; Driving force is sent to first gear of image-generating unit from drive source; For image-generating unit, be disposed at this side of first side and support the gear sheet of first gear; Generation is added to the high-tension circuit plate of the bias voltage on the image-generating unit, this high-tension circuit plate is configured in this side of first side and relative with the gear sheet for image-generating unit, this high-tension circuit plate has a displacement position, can dismantle in the opposite direction of first side and second side from the gear sheet; And the voltage of an output bias supplies with output terminal, is positioned at the displacement position of high-tension circuit plate.

Description of drawings

In the accompanying drawing:

Fig. 1 is the cross-sectional side view of major part, and illustrating according to imaging device of the present invention is first embodiment of laser printer, and the situation that a routine protecgulum is in closure is shown;

Fig. 2 is the cross-sectional side view of the major part of laser printer shown in Figure 1, and the state that protecgulum is opened is shown;

Fig. 3 is the synoptic diagram that the upper part of pallet spatial accommodation under the state that the paper feed pallet removes from entity shell shown in Figure 1 is shown;

Fig. 4 is the outside figure of left side frame shown in Figure 3;

Fig. 5 is the inboard figure of right side frame shown in Figure 3;

Fig. 6 is the upper part that pallet spatial accommodation under the state that the paper feed pallet removes from entity shell shown in Figure 1 is shown, and the synoptic diagram of the state that reinforcement plate removes is shown;

Fig. 7 is the cross-sectional side view of major part, and illustrating according to imaging device of the present invention is second embodiment of laser printer, and the situation that a routine protecgulum is in closure is shown;

Fig. 8 is the cross-sectional side view of the major part of laser printer shown in Figure 7, and the state that protecgulum is opened is shown;

Fig. 9 is the left view of paper feed pallet shown in Figure 7;

Figure 10 is the right view of paper feed pallet shown in Figure 7;

Figure 11 is the stereographic map of bulging cartridge shown in Figure 7;

Figure 12 is the cross-sectional side view of bulging cartridge shown in Figure 11;

Figure 13 is the left view of cartridge processing shown in Figure 7;

Figure 14 is the planimetric map of cartridge processing, left frame and correct frame shown in Figure 7;

Figure 15 is the outside figure of left frame shown in Figure 14;

Figure 16 is the synoptic diagram that high-tension circuit plate configuration shown in Figure 15 is shown;

Figure 17 is the cross-sectional view that cuts along cutting line XVII-XVII shown in Figure 15;

Figure 18 is the outside figure of left frame under the state of high-tension circuit plate after removing;

Figure 19 is the cross-sectional view that cuts along cutting line XIX-XIX shown in Figure 15;

Figure 20 is the inboard figure of left frame shown in Figure 14;

Figure 21 is the cross-sectional view that cuts along cutting line XXI-XXI shown in Figure 15;

Figure 22 is the outside figure of correct frame shown in Figure 14;

Figure 23 is the inboard figure of correct frame shown in Figure 14;

Figure 24 is the skeleton view of major part, and the structure of pallet locking plate shown in Figure 22 is shown;

Figure 25 is the skeleton view of major part, and the structure of ground pressure dish shown in Figure 22 is shown;

Figure 26 is the planimetric map of the major part of cartridge processing shown in Figure 7 and left frame;

Figure 27 A and Figure 27 B are the stereographic map of the advance and retreat action of explanation coupling assembly shown in Figure 25, and wherein Figure 27 A illustrates the forward travel state of coupling assembly, and Figure 27 B illustrates the fallback state of coupling assembly.

Embodiment

The embodiment of the invention is described with reference to the accompanying drawings

First embodiment

Fig. 1 is the synoptic diagram of the lateral cross-section of main part, has showed according to imaging device of the present invention to be first embodiment of laser printer.Laser printer 1 comprises: main body cover 2, feeding are as the feeding portion 4 of the paper 3 of recording medium, the imaging portion 5 of imaging on the paper 3 of institute's feeding.

In the main body cover 2, shirk the installation of the cartridge processing 18 that the following describes/shirk mouthfuls 6 in order to installation and be formed on the side of a side, and be equipped with to open and close and install/shirk mouthfuls 6 protecgulum 7.

Protecgulum 7 rotatable being supported in are adorned the lid axle (not shown) that is inserted in its bottom.Therefore, when protecgulum 7 when lid axle is closed, install/shirk mouthfuls 6 and close by protecgulum 7 as shown in Figure 1, and when protecgulum 7 be fulcrum when opening (downward-sloping) with the lid axle, install/shirk mouth 6 just to be opened, as shown in Figure 2.Cartridge processing 18 can be loaded into main body cover 2 or removal from main body cover 2 by installing/shirk mouth 6.

In regular instructions, in every laser printer 1 and cartridge processing 18 (comprising the development cartridge that illustrates later), settle the side of protecgulum 7 to be called " front side ", an opposite side is called " rear side ".

Feeding portion 4 comprises in the bottom of main body cover 2: the detachable pallet that is installed in open extension from front to back holds the paper feed pallet 8 at place 110; Intake roller 9 and the separating pad 10 that is placed in paper feed pallet 8 front ends top; Be placed in the pick-up roller 11 of intake roller 9 rear sides; Be placed in intake roller 9 front sides belows, the compression roller 12 relative with intake roller 9; And the registration roller 13 that is placed in intake roller 9 back side top.

What be included in paper feed pallet 8 inside is the paper tray 14 that is made of metal, above the mode that paper can pile up is placed on.Paper compressing tablet 14 rotating its rear end that are supported in, thereby its front end can move upward at upper and lower.

Be placed in the front end of paper feed pallet 8 in order to the regulations and parameters 15 of the leading section of propping up paper compressing tablet 14.The shape of regulations and parameters 15 sees that from the direction of xsect to be roughly letter L shaped, thereby can forward the bottom of paper compressing tablet 14 from the leading section of paper tray to.The upper end of regulations and parameters is fixed on the regulations and parameters axle 16 that is placed in paper feed pallet 8 leading sections, and thereafter the end near the leading section of the lower surface of paper compressing tablet 14.Thereby when as shown in the figure clockwise rotary driving force was input to regulations and parameters axle 16, regulations and parameters 15 was that fulcrum rotates with regulations and parameters axle 16 just, and the rearward end of regulations and parameters 15 is lifted the leading section of paper compressing tablet 14.

When the leading section of paper compressing tablet 14 lifts, outermost layer paper 3 on the paper compressing tablet 14 just is pressed towards pick-up roller 11, and along with the rotation of pick-up roller 11 and picked, picked paper 3 is delivered in pick-up roller 11 the place aheads and intake roller 9 and the space between the separating pad 10 a little more than pick-up roller 11 along picking up direction D1.

When paper feed pallet 8 when main body cover 2 is removed, paper compressing tablet 14 moves down its front end under the effect of himself weight, and finally enters into the state that extends along the lower surface of paper feed pallet 8.Under this state, the mode that paper 3 can pile up is placed on the paper compressing tablet 14.

Above the leading section of intake roller 9, is furnished with the guidance set 85 that shape circular arc, xsect is roughly 1/4th circular arc, to eliminate intake roller 9 in its outermost end with the outer peripheral surfaces zone topmost.In particular, circular arc guidance set 85 forms along the bent plate shape of the outer periphery surface bending of intake roller 9, and its xsect is roughly 1/4th circular arc.Space that guidance set 85 is occupied and intake roller 9 are in its outermost end position and topmost the outer peripheral surfaces zone between the position is equal substantially.

When entering between intake roller 9 and the separating pad 10, separated reliably by the paper 3 that pick-up roller 11 transmits along picking up direction D1.Then, paper 3 is being carried towards the space between intake roller 9 and the compression roller 12 under the rotary action of intake roller 9.And the paper 3 that has passed space between intake roller 9 and the compression roller 12 enters into the gap between intake roller 9 and the circular arc guidance set 85, and the outer periphery surface along intake roller 9 is carried in the gap of intake roller 9 and circular arc guidance set 85.Therefore, the throughput direction of paper 3 by the paper between intake roller 9 and the separating pad 10 pick up direction D1 be converted to and pick up direction D1 opposite, be this image formation state throughput direction D2 backward.

, guide plate 86 that be formed from a resin upwardly extending in front and back is placed in the rear portion of intake roller 9.Guide plate 86 comprises: from just beginning downward-sloping backward this upstream section 87 near the top of intake roller 9; Be connected to the position, middle reaches 88 that the formation recess shapes connects with the rear side of hiding the transfer roll 30 this upstream section 87 that the following describes from below; And be connected with 88 rear ends, position, middle reaches, have a downstream portion 89 of acclivitous upper surface backward.

Registration roller 13 is made of two relative rollers up and down, and they are configured to the low level roller and protrude in the upper surface of guide plate 86, high-order roller and low pressure roller at the leading section of the upstream section 87 of guide plate 86 and push such state that contacts.

The paper of carrying between intake roller 9 and separating pad 10 3 is in the outer periphery surface disengaging near paper feed device P with the intake roller 9 of the top ends of the outer periphery surface of intake roller 9, with the upstream section 87 that is transported to guide plate 86.And, behind registration roller 13 location, the paper 3 that is transported on the upstream side position 87 of guide plate 86 is carried with downward-sloping backward direction on the upstream side position 87 of guide plate 86, and the upper surface along upstream portion position 87 is carried under the rotary action of registration roller 13, and be transported to the imaging position (embossed locations between photosensitive drums 28 that illustrates later and transfer roll 30, the toner image on the photosensitive drums 28 is transferred on the paper 3) of imaging portion here.That is to say, extend to the imaging position from paper feed device P, and the transport path 90 that slopes downwardly into the gap between photosensitive drums 28 and the transfer roll 30 from the gap between intake roller 9 outer periphery surfaces and the circular arc guidance set 85 forms at the upstream side position 87 of guide plate 86 near the top of the outer periphery surface of intake roller 9.

Imaging portion 5 comprises: scanner section 17, cartridge processing 18 and photographic fixing portion 19.

Scanner section 17 is placed on the upper member of main body cover 2 inside, and it comprises: unshowned LASER Light Source, polygon prism 20, f θ lens 21, reverberator 22, lens 23 and the reverberator 24 of driving for rotating.By the laser beam that LASER Light Source is launched,, shown in dotted line by polygon prism 20 deflections and by f θ lens 21 based on view data.Subsequently, the optical path of laser beam is by reverberator 22 reflection scioptics 23.Then, optical path is reflected downwards by reverberator 24.Therefore, laser beam projects the surface of the photosensitive drums 28 of the cartridge processing 18 that illustrates later with the form of high-velocity scanning.

The cartridge processing 18 removable lining main body covers 2 that are installed to scanner section 17 belows.Cartridge processing 18 comprises bulging cartridge 25 and the removable lining development cartridge 26 that is installed on the bulging cartridge 25.

Drum cartridge 25 is between pair of side plates 27, and each side plate extends upward and be configured to transversely meet at right angles with fore-and-aft direction toward each other (after this abbreviating " laterally " as) at paper 3 in laser printer in front and back.Development cartridge 26 is contained on the front side, and photosensitive drums 28, scorotron charger 29, all is installed on the rear side as the transfer roll 30 and the cleaning brush of transfer printing unit.

Photosensitive drums 28 comprises: cylindrical drum body 32, the positive electricity photosensitive layer of its outermost surface layer for being made by polycarbonate etc.; And metal drum axle 33, it extends along the axle center of drum body 32 on the length direction of drum body 32.Drum axle 33 is rotatable, is supported on two side plates 27 of bulging cartridge 25, and rouses body 32 with respect to the 33 rotatable supports of drum axle, and therefore, photosensitive drums 28 is arranged as can be with respect to drum axle 33 rotations between two side plates 27.

Scorotron charger 29 is oppositely installed with photosensitive drums 28, and the centre is left the space and contacted with photosensitive drums 28 avoiding, and is positioned at the oblique upper of photosensitive drums 28 rear sides.Scorotron charger 29 is the scorotron type charger of positive electricity charging, and it comprises charging lead and tungsten grid etc.Add discharge bias by 95 pairs of high-tension circuit plates that illustrates later charging lead, and add the grid bias voltage by 95 pairs of grids of high-tension circuit plate, produce corona discharge thus so that the surperficial uniform charging of photosensitive drums 28 for having normal polarity.

Transfer roll 30 rotations are supported on two side plates 27 of bulging cartridge 25, and are arranged to and the contact relative with photosensitive drums from downside on above-below direction, and form impression between the two at transfer roll and photosensitive drums 28.Transfer roll 30 constitutes metal roll shaft 34 and is coated with the rubber rollers of being made by conductive rubber material 35.By the high-tension circuit plate that illustrates later transfer roll 30 is added a transfer bias.

Cleaning brush 31 is positioned to the bulging body 32 surperficial this states of brush end from photosensitive drums 28 back contact photosensitive drums 28.By the high-tension circuit plate that illustrates later cleaning brush 31 is added the cleaning bias voltage.

Development cartridge 26 is installed on the bulging cartridge 25 can shirk mode, and it comprises cartridge shape casing 36, intake roller 37, the developer roll 38 that rear side is opened and the bed thickness that is arranged in the casing 36 is regulated cutter 39.Development cartridge 26 can be with being loaded on the main body cover 2 of drum cartridge 26 integral body, or shirk from main body cover 2.

In the casing 36, be furnished with from the outstanding downwards demarcation strip 40 of casing upper surface, it extends toward Width in the centre of fore-and-aft direction, and holds storehouse 41 at the internal voids of demarcation strip 40 fronts as toner, and the internal voids of demarcation strip 40 back is used as developing chamber 42.

Toner holds in the storehouse 41, and the non-magnetic mono-component toner of positive charge characteristic is as developer.Used toner is the aggretion type toner, it obtains by this way: polymerisable monomer, for example, styrene-based monomers (as styrene) and propenyl monomer (as acrylic acid, alkyl (C1-C4) acrylate, alkyl (C1-C4) methyl acrylate) carry out copolymerization with known polymerization such as suspension polymerization and obtain.Such aggretion type toner is spherical, and shows good flowability, and it can obtain high-quality imaging.

Subsidiary mentioning, the toner of colorant as carbon black, paraffin etc. also can be compound in order to strengthen flowability, also can add as adjuvants such as silicon dioxide.The diameter of toner particle is approximately 6～10 μ m.

And, be placed in toner and hold in the storehouse 41 in order to stir stirrer 43 that toner holds the toner in the storehouse 41.The centre that stirrer 43 holds storehouse 41 by toner is in the stirrer turning axle 44 that extends in a lateral direction to be supported, and stirrer 43 is the fulcrum rotation with stirrer turning axle 44.Thus, toner holds that toner in the storehouse 41 is stirred and the toner discharge orifice 45 below being positioned at demarcation strip 40 is discharged into developing chamber 42.

In the developing chamber 42, intake roller 37 rotation is supported between two side plates, and side plate is placed in preceding bottom and relative in a lateral direction at casing 36.Intake roller 37 comprises the continuous roller 47 of the bubble that is covered in paper feed roll shaft 46 peripheries that paper feed roll shaft 46 metal and that extend in a lateral direction and conductive foams are made.

In the developing chamber 42, developer roll 38 rotation is supported between two side plates, and side plate is positioned in preceding bottom and relative in a lateral direction at casing 36.And developer roll is arranged to its part surface can expose as the back that protrudes in casing 36, and when development cartridge 26 installed in the bulging cartridge 25, it is and contact relative with photosensitive drums on fore-and-aft direction.Developer roll 38 comprises the rubber coated pressure bowl 49 that is covered in development roll shaft 48 peripheries that development roll shaft 48 metal and that extend in a lateral direction and conductive rubber material are made.Rubber rollers 49 is made by the urethane rubber or the silicon rubber of carbonaceous particles etc., and its surface coverage has fluorinated polyurethane rubber or silicon rubber.And rubber coated pressure bowl 49 is arranged to contact with mutual extrusion with the continuous roller 47 of the bubble of intake roller 37.Shuo Ming high-tension circuit plate adds the development bias voltage to developer roll 38 from behind.

Bed thickness is regulated cutter 39 and is made by the metal spring leaf assembly, presses down rubber assembly 50 what its terminal part was furnished with semi-circular cross-section that electrically insulating silicone rubber makes.Bed thickness is regulated cutter 39 and is supported by the casing 36 that is positioned at above the developer roll 38, and its bottom is relative with the rubber coated pressure bowl 49 of developer roll 38 from the front side, therefore, regulates at bed thickness under the elastic force effect of cutter 39, and just 49 extruding contact with rubber coated pressure bowl to press down rubber assembly 50.

Under the stirring of stirrer 43, the toner that is discharged into developing chamber 42 from toner discharge orifice 45 is on the rubber coated pressure bowl 49 that is fed into developer roll 38 under the turning effort of intake roller 37.In the case, toner is become by the charging of part between the rubber coated pressure bowl 49 of the foam roller 47 of intake roller 37 and developer roll 38 and has normal polarity.Be fed into toner on the rubber coated pressure bowl 49 and under the turning effort of developer roll 38, enter into the space that presses down rubber assembly 50 that rubber coated pressure bowl 49 and bed thickness are regulated cutter 39, become the thin layer of a predetermined thickness so that on rubber coated pressure bowl 49, carry.

By scorotron charger 29, the surface of photosensitive drums 28 has uniform positive charge, is exposed to the high-velocity scanning of the laser beam that scanner section 17 sent then, forms the electrostatic latent image based on view data thus.

Subsequently, when the toner of the entrained positively charged of the rubber coated pressure bowl 49 of developer roll 38 takes the opposite of photosensitive drums 28 to and is in contact with it under the turning effort of developer roll 38, its feeding obtains being formed at the electrostatic latent image on photosensitive drums 28 surfaces, that is to say, thereby it is exposed to the lower exposure portion of laser beam electromotive force with the surface of the photosensitive drums 28 of even positive charge, just optionally carried, can be converted into visual image thus.Therefore, form toner image by reverse development.

Subsequently, the paper 3 that photosensitive drums 28 and transfer roll 30 transport transport path 90 through driven in rotation inserts wherein to be carried, and paper 3 is carried between photosensitive drums 28 and transfer roll 30, and therefore, the toner image that is carried on photosensitive drums 28 surfaces just is transferred on the paper 3.

After transfer printing is finished, when photosensitive drums 28 under the turning effort of photosensitive drums 28 and cleaning brush 31 are relative, because photosensitive drums contacts the paper scrap powder that adheres to photosensitive drums 28 surfaces that is caused and brushed by cleaning brush 31 with paper 3.

Photographic fixing portion 19 places on the rear side of downstream portion 89 of guide plate 86 (downstream of image formation state throughput direction D2), and it is included in the photographic fixing frame 51 that extends in a lateral direction and rotatablely is supported in photographic fixing frame 51 and the warm-up mill 52 and the backer roll 53 of configuration relatively on above-below direction.

The heating Halogen lamp LED 112 that warm-up mill 52 comprises metallic element pipe 111 and is positioned at metallic element pipe 111.It can be obtained rotation by the power that not shown motor is carried and drive.

Backer roll 53 is arranged in the below of warm-up mill 52 and relative with it, with to warm-up mill 52 pressurizations.Backer roll 53 constitutes metal roll shaft 80 in such a way and is coated with the roller 81 that elastomeric material is made, and can be obtained by the rotary driving force of warm-up mill 52 driving.

Top transfer printing has the paper 3 of toner image, and under the turning effort of photosensitive drums 28 and transfer roll 30, the upper surface along downstream portion 89 on the acclivitous backward direction of the downstream portion 89 of guide plate 86 is carried.And paper 3 enters into photographic fixing frame 51 also by the space between warm-up mill 52 and the backer roll 53.In this case, by heating and 53 applied pressures of backer roll that warm-up mill 52 is carried out, be transferred to toner on the paper 3 and can be subjected to heating and be fixed on the paper 3.

The rear side at photographic fixing position 19 is formed with inclination paper outgoing route 82, and it extends back and is inclined upwardly with the angle greater than the upper surface of guide plate 86; And crooked paper outgoing route 91, it curves c-shaped cross section substantially from inclination paper outgoing route 82 rear side terminal edges.Be configured in the upper end of crooked paper outgoing route 91 as the exit roller 83 of output unit.

Under the turning effort of warm-up mill 52 and backer roll 53, in photographic fixing portion 19, made the fixing paper 3 of toner be transported to inclination paper emission path 82, and by inclination paper outgoing route 82 and then by crooked paper outgoing route 91.When paper 3 arrives exit roller 83, under the turning effort of exit roller 83, export, and output to the paper output tray 84 of the upper surface formation of main body cover 2 with the D3 of outbound course forward opposite with image formation state throughput direction D2.

Pallet holds the synoptic diagram on 110 top to Fig. 3 under this state in back for paper feed pallet 8 shirks from main body cover 2.Main body cover 2 is furnished with left frame 92 and the correct frame 93 that resin is made, and both are arranged in a lateral direction toward each other.And guide plate 86 extends between the two in left frame 92 and correct frame 93, and cartridge processing 18 (referring to Fig. 1) is installed to the top of guide plate 86.

As shown in Figure 4, in side view, left frame 92 is formed on the upwardly extending rectangle in front and back substantially, and be equipped with gear sheet 94 at its outer surface, as the high-tension circuit plate 95 of power supply circuit board and as the main circuit board 96 of control circuit board.

Gear sheet 94 is made by sheet metal, supports the gear that the driving force of motor (not shown) is sent to cartridge processing 18 grades.Gear sheet 94 is arranged to from the front edge of left frame 92 and begins to extend back, and along the lower edge of the outer surface of left frame 92 extend so that this side of gear has been installed can be towards the outer surface of left frame 92.

High-tension circuit plate 95 is one in order to improve from the power supply circuit board of being installed of the single-phase voltage of the 100V voltage of printer 1 outside input, to produce the high pressure bias voltage and to be applied to scorotron charger 29, transfer roll 30, cleaning brush 31 and developer roll 38 respectively.High-tension circuit plate 95 is arranged in the reverse direction of gear sheet 94 from the horizontal outside, thereby front upper part at the outer surface of left frame 92, the surface that transformer is installed can be over against the outer surface of left frame 92, and the bottom of circuit board 95 can be overlapping with the upper end of gear sheet 94 simultaneously.

Main circuit board 96 is control circuit boards, and it comprises the CPU of the each several part action of controlling laser printer.Roughly form the shape of alphabetical L from side elevation main circuit board 96, and the outer surface place that is arranged in left frame 92 is formed in the space of rear side of gear sheet 94 and high-tension circuit plate 95, thereby main circuit board can be not overlapping with gear sheet 94 or high-tension circuit plate 95.

Show that as Fig. 5 by side elevation, correct frame 93 is formed on the upwardly extending rectangle in front and back substantially, and is equipped with low-voltage circuit plate 97 and fan 98 at the correct frame outer surface.

Low-voltage circuit plate 97 is one in order to reduce from the power supply circuit board of the single-phase voltage of the 100V voltage of printer 1 outside input, to produce the required low-voltage of driving motor (not shown).Low-voltage circuit plate 97 is arranged to the circuit board surface that transformer etc. is installed can be over against the outer surface of correct frame 93, and this circuit board can extend forward along its lower edge from the back edge of correct frame 93.

The effect of fan 98 is that the heat discharge that cartridge processing 18 and photographic fixing portion 1 produces is gone out shell 2, is configured to above the centre of the fore-and-aft direction of correct frame 93 and low-voltage circuit plate 97 the horizontal inboard of correct frame 93 and lateral outer side are communicated with.

As shown in Figure 6, guide plate 86 comprises the roll support portion 99 that combines with the front portion of upstream section 87, its rotatable support intake roller 9, pick-up roller 11 and registration roller 13.

The cutting part 100 that connects on above-below direction is formed at the transverse center portion of roll support portion 99, and the intake roller 9 and the pick-up roller 11 that are used as feed unit are positioned at cutting part 100 side by side on fore-and-aft direction.Specifically, intake roller paper feed roll shafts 101 9 that be made of metal, that extend in a lateral direction from left frame 92 beginnings support, and rotatablely by this way are arranged at cutting part 100 so that the paper feed roll shaft 101 rotatable flanks 102 that cross the left surfaces of cutting part 100 and be suspended from the lower surface of guide plate 86.And pick-up roller 11 is supported by the roll shaft 103 that picks up that extends in a lateral direction, and rotatablely by this way is arranged at cutting part 100 and is born with two transverse sides of rotatable mode by cutting part 100 so that pick up roll shaft.

In the vertical view, registration roller 13 places the top of pick-up roller 11, place on two transverse sides of pick-up roller 11, and the location roll shaft 113 that is made of metal, extend in a lateral direction from left frame 92 beginnings supports.

Location roll shaft 113 rotation is supported on the conductive bearing 114 that left frame 92 and left registration roller 13 conductive material between the two make.And earth conductor 115 end wherein is connected with conductive bearing 114.The earth conductor 115 wherein other end is around in the outer periphery surface of jut 116.When the reinforcement plate 106 that illustrates below was fixed as the jut 116 that extends near the lower surface from guide plate 86 downwards, the other end of earth conductor 115 just contacted with reinforcement plate 106.And the earth conductor 117 that is used for an intake roller wherein end is connected with paper feed roll shaft 101, and the earth conductor 117 that the is used for intake roller wherein other end then is connected with conductive bearing 114.Therefore, paper feed roll shaft 101 and location roll shaft 113 are electrically connected with reinforcement plate 106, this reinforcement plate 106 is electrically connected by a lead 119 mutually with the hot baffle 109 that the following describes, and hot baffle 109 also is electrically connected mutually by the grounding terminals of lead (not shown) with low-voltage circuit plate 97 and main circuit board 96, comes ground connection thus.

The rear portion of the upstream section 87 of guide plate 86, a plurality of circular ports 104 that form a line in a lateral direction become and are used for by upstream section 87 at up-draft first air vent of upper and lower.

And, on the middle part 88 of guide plate 86, be formed with a plurality of rectangular openings in a lateral direction side by side, became to be used for by middle part 88 at up-draft the 3rd air vent of upper and lower.

As shown in Figure 3, by sheet metal make in order to strengthening the reinforcement plate 106 of guide plate 86, and the bottom that all is arranged at guide plate 86 by the hot baffle 109 that sheet metal is made in order to 19 liberated heats of blocking-up photographic fixing portion.

Reinforcement plate 106 places on the reverse direction of upstream section 87 at guide plate 86 and roll support position 99, extension in a lateral direction at guide plate 96, its shape is substantially rectangular slab, and this rectangular slab extends to this side of formation position that guide plate 86 forms rectangular opening from the front edge of guide plate 86.Specifically, reinforcement plate 106 is from the upstream section 87 and the roller support zone 99 of following covering guide plate 86, and with respect to the rectangular opening 105 of the middle part 88 that is formed at guide plate 86, edge, its rear end (it is at the downstream ora terminalis on the image formation state throughput direction) is positioned at front side (upstream side on the image formation state throughput direction).

By observing rectangular cutting reinforcement plate 106 at its front edge by planimetric map, reinforcement plate 106 is formed with cutting hole 107 in the position relative with this cutting part 100.Therefore, below intake roller 9 and pick-up roller 11 are exposed to by cutting hole 107.In other words, reinforcement plate 106 is set to its part that is positioned at cutting hole 107 both sides in a lateral direction and all can keeps intake roller 9 and pick-up rollers 11 from both outsides of horizontal direction.

Reinforcement plate 106 is formed with a plurality of circular ports 108, becomes to be used for by reinforcement plate 106 at up-draft second air vent of upper and lower, and the circular port 104 that allows like this to form on the guide plate 86 ventilates.Be formed with a plurality of circular ports 108 so that total open area of a plurality of circular ports 104 that its total open area can form greater than guide plate 86.And a plurality of circular ports 104 are formed at the reinforcement plate 106 relative with the upstream section 87 of guide plate 86 with the form of round dot.

On the planimetric map shape be roughly U-shaped, as the recess 118 of the intensity that strengthens reinforcement plate 106, be formed in the reinforcement plate 106 towards lower recess and surround cutting hole 107.

Hot baffle 109 places the direction opposite with the downstream portion 89 of guide plate 86, and on fore-and-aft direction with reinforcement plate 106 at a distance of predetermined distance, and its formed extension in a lateral direction that is roughly rectangular shape at guide plate 86.That is to say that hot baffle 109 is arranged to the downstream portion 89 from following covering guide plate 86.Therefore, the heat radiation of hot baffle 109 blocking-up photographic fixing portions 19 prevents that thus heat radiation from passing to the paper 3 in the paper feed pallet 8 that guide plate 86 installs below.

As mentioned above, in the printer 1, high-tension circuit plate 95 and main circuit board 96 place on the outer surface of left frame 92, be not place transport path 90 below.Therefore, transport path 90 forms from paper feed device P toward image space downward-sloping, thereby the height and position of imaging portion 5 in the main body cover 2 is reduced.As a result, can be so that the height of laser printer 1 reduces.And high-tension circuit plate 95 and main circuit board 96 all place on the left frame 92, thereby the width of laser printer 1 also can reduce.

High-tension circuit plate 95 does not place the structure of the lower surface of guide plate 86, and the sheet metal that is used to shield high-tension circuit plate 95 grades just needn't be installed in the lower surface of guide plate 86, so the intensity of guide plate 86 can reduce.Otherwise in the structure of laser printer 1, reinforcement plate 106 places the lower surface of guide plate 86, so the intensity of guide plate 86 can strengthen.Thereby, can prevent the distortion of guide plate 86 etc.

Reinforcement plate 106 is made by sheet metal, and the intensity of the guide plate 86 that resin is made can be strengthened reliably.

Intake roller 9 and pick-up roller 11 are supported by the roller support zone 99 of guide plate 86, and therefore, when driving these rollers, the load of roller support zone 99 is bigger.But because reinforcement plate 106 is set, thereby can prevent the distortion of roller support zone 99.

Because cutting part 100 places that intake roller 9 and pick-up roller 11 place the transverse center portion at roll support position 99 to form, the structure below intake roller 9 and pick-up roller 11 place guide plate 86 is compared, and the height of laser printer 1 can further reduce.

Cutting hole 107 is formed in the reinforcement plate 106, and orientates as from two outsides of horizontal direction and keep intake roller 9 and pick-up roller 11 in both sides in a lateral direction with respect to the reinforcement plate 106 of this cutting hole 107.Therefore, can be strengthened reliably around the cutting part 100 of the roller support zone 99 of guide plate 86, can further be prevented the distortion of roller support zone 99 etc.

Because recess 118 is formed in the reinforcement plate 106, thereby can further strengthen the intensity of reinforcement plate 106.Therefore, can be strengthened reliably around the cutting part 100 of the roller support zone 99 of guide plate 86, can further be prevented the distortion of roller support zone 99 etc.

Because a plurality of circular ports 108 are formed in the reinforcement plate 106, thereby can prevent to be blocked by reinforcement plate 106 based on the ventilation of the formed a plurality of circular ports 104 in rear portion of the upstream section 87 of guide plate 86.

Because total open area of a plurality of circular ports 108 of reinforcement plate 106 is greater than total open area of guide plate 86 formed a plurality of circular ports 104, thereby can prevent more reliably that the ventilation of circular port 104 from being blocked by reinforcement plate 106.

The heat radiation that cartridge processing 18 is produced can be promoted by the fan 98 that is installed on the correct frame 93 to the air-flow of main body cover 2 outsides, and 104 air-flow flows in main body cover 2 also in front under the impetus of described air-flow from circular hole 108 to circular hole.Therefore, the inside of main body cover 2 can keep enough ventilations.

Because a plurality of rectangular openings 105 are formed at the middle part 88 of guide plate 86, thereby the atmosphere around the transfer roll 30 can keep ventilating by rectangular opening 105.Therefore, can reach stable transfer printing.

Because the back edge of reinforcement plate 106 is positioned at forward position with respect to the middle part 88 formed rectangular openings 105 of guide plate 86, can prevent that rectangular opening 105 from being closed by reinforcement plate 106.Therefore, can guarantee the ventilation of rectangular opening 105.

Because reinforcement plate 106 is ground connection, thereby can prevent that electric charge from accumulating on reinforcement plate 106.Therefore, can prevent from charge discharge to take place, thereby can prevent that this discharge from causing the picture quality variation from reinforcement plate 106.

Because paper feed roll shaft 101 and location roll shaft 113 also are ground connection, thereby can prevent electric charge accumulation on these axles.And paper feed roll shaft 101 and location roll shaft 113 are by being installed near these reinforcement plate 106 ground connection, can simplifying the wire structures that is used for intake roller 9 and pick-up roller 11 ground connection.

Second embodiment

Fig. 7 and Fig. 8 are the cross-sectional side view of major part, and illustrating according to imaging device of the present invention is second embodiment of laser printer.Laser printer 201 comprises: main body cover 202, feeding are as the feeding portion 204 of the paper 203 of recording medium, the imaging portion 205 of imaging on the paper 203 of institute's feeding.

In the main body cover 202, shirk the installation of the cartridge processing 218 that the following describes/shirk mouthfuls 206 in order to installation and be formed on the side of a side, and be equipped with to open and close and install/shirk mouthfuls 206 protecgulum 207.

Protecgulum 207 rotatable being supported in are adorned the lid axle (not shown) that is inserted in its bottom.Therefore, when protecgulum 207 when lid axle is closed, install/shirk mouthfuls 206 and close by protecgulum 207 as shown in Figure 7, and when protecgulum 207 be fulcrum when opening (downward-sloping) with the lid axle, install/shirk mouth 206 just to be opened, as shown in Figure 8.Cartridge processing 218 can be loaded into main body cover 202 or removal from main body cover 202 by installing/shirk mouth 206.

In regular instructions, in every laser printer 201 and cartridge processing 218 (comprising the development cartridge that illustrates later), settle the side of protecgulum 207 to be called " front side ", an opposite side is called " rear side ".

Feeding portion 204 comprises in the bottom of main body cover 202: the detachable pallet that is installed in open extension from front to back holds the paper feed pallet 208 at place 310; Intake roller 209 and the separating pad 210 that is placed in paper feed pallet 208 front ends top; Be placed in the pick-up roller 211 of intake roller 209 rear sides; Be placed in intake roller 209 front sides belows, the compression roller 212 relative with intake roller 209; And the registration roller 213 that is placed in intake roller 209 back side top.

Shown in Fig. 7～10, the comprising of intake roller 208 integral body: rectangular base plate 259 in planimetric map; Surround antetheca 260, rear wall 261, left side wall 262, the right side wall 263 of base plate 259 superjacent air spaces, they are vertical respectively erects periphery edge at base plate 259.

Antetheca 260 links to each other with the front edge of base plate 259.As Fig. 9 and shown in Figure 10, be formed with on the antetheca 260 from the side-looking angle and see the handgrip position 264 that is roughly rectangle.After handgrip position 264 was caught, paper tray 208 can slide on the fore-and-aft direction with respect to main body cover 202, and thus, paper tray 208 can be removed or be contained on the main body cover 202 from main body cover 202.

Rear wall 261 links to each other with the back edge of base plate 259.

As shown in Figure 9, the left end edge of left side wall 262 and base plate 259 links to each other.It comprises: see the gear installation position 265 that is roughly rectangle from the side-looking angle; Be positioned at the slightly Zuo Bi rear portion 266 that extends back from gear installation position 265 of lower, aspect ratio gear installation position 265.Be equipped with in the gear installation position 265: when paper tray 208 is contained on the main body cover 202, with be contained in shell 202 on, input gear 267 that the regulations and parameters driving force that illustrates later transmission gear 377 is meshed, and the regulations and parameters driven wheel 268 that is meshed with input gear 267, the drive force rotation that it is transmitted by input gear 267.

As shown in figure 10, right side wall 263 links to each other with the right-hand member edge of base plate 259.And it comprises: see the right wall front portion 269 that is roughly rectangle from the side-looking angle; Be positioned at the slightly You Bi rear portion 270 that extends back from right wall front portion 269 of lower of the right wall anterior 269 of aspect ratio.The end, front at You Bi rear portion 270 be equipped with as locking mechanism see the locking plate junction surface 271 that is roughly rectangle from the side-looking angle, when paper tray 208 was installed on the main body cover 2, the pallet locking plate 279 that illustrates later engaged with it.And when paper tray 208 was installed on the main body cover 2, on fore-and-aft direction, the middle part at You Bi rear portion 270 was formed with ground hole 272, and the supporting plate earthing contact 383 that illustrates later is housed in the ground hole.

As shown in Figure 7 and Figure 8, paper tray 208 comprises: on base plate 259, the metal paper supporting plate 214 that can place the paper 203 that piles up shape; And be positioned at paper supporting plate 214 front sides, in order to the elevatory regulations and parameters 215 of the fore-end of paper supporting plate 214.

Paper supporting plate 214 can rock is supported in its rear portion, and its front portion can move upward at upper and lower thus.

From the cross section, it is L shaped that the shape of regulations and parameters 215 is roughly letter, with can be under paper supporting plate 214, rotates from the front end of paper supporting plate.The upper end of regulations and parameters 215 is fixed on the direction (back is called " laterally ") of fore-and-aft direction quadrature and goes up on the regulations and parameters axle 216 that extends, its rear end then with the front end lower surface of paper supporting plate 214 near.In addition, regulations and parameters axle 216 also runs through left side wall 262 and protrudes in left side wall 262 in the horizontal, and regulations and parameters gear 268 is then relatively rotatable is fixed in from the left end of the outstanding regulations and parameters axle 216 of left side wall 262.Regulations and parameters axle 216 is above base plate 259, and rotation is supported on the unshowned flank.

When paper tray 208 was installed on the main body cover 2, the regulations and parameters driving force transmission gear 377 that is installed on the main body cover that illustrates later was meshed with input gear 267.Under engagement, when the driving force that transmits when regulations and parameters driving force transmission gear 377 was input to input gear 267, along with the rotation of input gear 267, regulations and parameters 215 was the fulcrum rotation with regulations and parameters axle 216 just, and the front end of paper supporting plate 214 is just lifted in the rear end of regulations and parameters 215.

When the front end of paper supporting plate 214 was picked up, the outermost layer paper 203 on the paper tray 214 just was pressed towards pick-up roller 211, and along with the rotation of pick-up roller 211, picked paper 203 transmits towards the space between intake roller 209 and the separating pad 210.

When paper tray 208 when main body cover 202 is removed, engagement between input gear 267 and the regulations and parameters driving force transmission gear 377 has also just been removed, the front end of paper tray 214 can move down under the effect of himself weight, and enters into the state that paper tray 214 extends along the base plate 259 of paper feed pallet 208.Under this state, the mode that paper 203 can pile up is placed on the paper tray 214.

Above the front end of intake roller 209, is furnished with the guidance set 285 that shape circular arc, xsect is roughly 1/4th circular arc, to eliminate intake roller 209 in its outermost end with the outer peripheral surfaces zone topmost.In particular, circular arc guidance set 285 forms along the bent plate shape of the outer periphery surface bending of intake roller 209, and its xsect is roughly 1/4th circular arc.Space that guidance set 285 is occupied and intake roller 209 are equal substantially with the outer peripheral surfaces zone topmost in its outermost end.

The paper 203 that is transmitted by pick-up roller 211 is separated when entering between intake roller 209 and the separating pad 210 reliably.Then, paper 203 transmits towards the space between intake roller 209 and the compression roller 212 under the rotary action of intake roller 209.And, the paper 203 that has passed the space between intake roller 209 and the compression roller 212 enters into the gap between intake roller 209 and the circular arc guidance set 285, and in the gap of intake roller 209 and circular arc guidance set 285 along the outer periphery surface transmission of intake roller 209.

Guide plate 286 that extend back, that be formed from a resin is positioned in the rear portion of intake roller 209 in the past.Guide plate 286 comprises: from just beginning sweptback upstream section 287 near the top of intake roller 209; From following with form the position, middle reaches 288 that the lower end of recess with the upstream section 287 of hiding transfer roll 230 is connected; And the downstream portion 289 that is connected with 88 lower ends, position, middle reaches, it has sweptback upper surface.

Registration roller 213 is made of two relative rollers up and down, and they are arranged to such state: the low level roller protrudes in the upper surface of guide plate 286 at the front end of the upstream section 287 of guide plate 286, and extruding contacts high-order roller with the low pressure roller.

The paper 203 of transmission between intake roller 209 and separating pad 210 breaks away from the putting from the outer periphery surface of intake roller 209 of top near the outer periphery surface of intake roller 209, on the upstream section 287 that is transported to guide plate 286.And, after registration roller 213 is adjusted, the paper 203 that is transported on the upstream section 287 of guide plate 286 is carried with downward-sloping direction on the upstream section 287 of guide plate 286, and the upper surface along downstream portion 287 is carried under the rotary action of registration roller 213, and the imaging position that is transported to imaging portion is (between illustrated photosensitive drums 228 in back and the embossed locations between the transfer roll 230, here, the toner image on the photosensitive drums 228 is transferred on the paper 203).

Imaging portion 205 comprises: scanner section 217, cartridge processing 218 and photographic fixing portion 219.

Scanner section 217 is positioned on the upper member of main body cover 202 inside, and it comprises: unshowned LASER Light Source, rotating polygon prism 220, f θ lens 221, reverberator 222, lens 223 and reverberator 224.The laser beam of carrying image data information of launching by LASER Light Source, by polygon prism 220 deflections and pass f θ lens 221, shown in dotted line.Subsequently, be reflected device 222 counter-rotating and pass lens 223 of the optical path of laser beam.Then, the optical path device 224 that is reflected is bent downwardly.Therefore, laser beam projects with the form of high-velocity scanning on the surface of photosensitive drums 228 of the cartridge processing 218 that illustrates later.

Cartridge processing 218 dismountable belows of being installed to scanner section 217 in the main body cover 202.Cartridge processing 218 comprises bulging cartridge 225 and dismountable development cartridge 226 of being installed in the bulging cartridge 225.

As Figure 11 and shown in Figure 12, drum cartridge 225 comprises: cartridge shape framework 291, in the cartridge shape framework 291 process component is housed, and in other words, photosensitive drums 228 is photosensory assemblies; Scorotron charger 229 as charhing unit; Transfer roll 230 as transfer printing unit; And the cleaning brush 231 that is used as cleaning unit.

Cartridge shape framework 291 comprises on the whole: left side wall 296, right side wall 297, diapire 298 and antetheca 299 and back upper wall 300.

Left side wall 296 and right side wall 297 are arranged to toward each other between its transverse region, each wall all is such: see the rear wall position 205 that roughly is arc from side view, see roughly rectangular antetheca position 305 from side view, see roughly rectangular wall extension position 307 from side view, the continuous in order rear side from corresponding sidewall forms towards the direction of its front side.

Front side wall position 306 comprises: when development cartridge 226 is installed, as the roll shaft guiding position 315 of the guiding of the roll shaft end of the development roll shaft 248 that illustrates later; Be arranged in the roll shaft acceptor site 316 that links to each other with the rear end at roll shaft guiding position 315, it can be accepted by the roll shaft end of the development roll shaft 248 of roll shaft guiding position 315 guiding.

Roll shaft guiding position 315 forms as the upper end-face edge at front side wall position 306, and on fore-and-aft direction, the downward-sloping extension backwards from the middle part of front side wall portion position 306, and it extends into flat in the horizontal direction.

Roll shaft acceptor site 316 links to each other with the rear end at roll shaft guiding position 315.Cut into rectangle (from side view) by will give prominence to wall 317 from its front edge, roll shaft acceptor site 316 is formed at from the outstanding outstanding wall 317 in the rear end at roll shaft guiding position 315.The lower edge of roll shaft acceptor site 316 links to each other with the back edge at roll shaft guiding position 315.

Wall extension 307 and front side wall 306 flush in the horizontal, and link to each other with front side wall 306.

Diapire 298 is tabular haply, and it is mounted to link to each other with the lower edge of left side wall 296 and right side wall 297 on fore-and-aft direction.

Antetheca 299 forms and upwards curves the right angle with the front edge from diapire 298.The rectangular haply tabular of antetheca 299, and it intersects with left side wall 296 and right side wall 297, so two lateral end is all curved the right angle by sidewall.

Back upper wall 300 forms tabular, and is downward-sloping backwards, and on fore-and-aft direction, links to each other respectively with the rear wall position 305 of left side wall 296 and right side wall 297.Back upper wall 300 possesses the back edge that links to each other with diapire 298 back edges in the horizontal.In addition, back upper wall 300 is furnished with the laser inlet 321 that horizontal expansion and planar graph are roughly rectangle in its front portion.Integral body is formed with on the back upper wall 300: on the inclined upper at rear portion of back upper wall, support the charging support zone 322 of scorotron charger 229, support the cleaning brush support zone 323 of cleaning brush 231 at the inside line at rear portion.

In the cartridge shape framework 291, drum holds position 302 and is defined as: open front, respectively by the rear wall position 305 of left side wall 296 and right side wall 297, back upper wall 300 and the closed space that the rear portion of the diapire 298 relative with back upper wall 300 surrounds on above-below direction.The development cartridge is held position 303 and is defined as: open front, anterior with below the extending part of mentioning 304 is linked to each other, the rear portion holds position 302 with drum and links to each other, other front side wall position 306 by left side wall 296 and right side wall 297, with on fore-and-aft direction, the closed space that the middle part of the diapires 298 that laterally link to each other with corresponding front side wall position 306 surrounds.And, extending part 304 is defined as: the upper end is opened wide, rear portion and development cartridge are held position 303, and the front portion and the antetheca 299 of the diapires 298 that laterally linked to each other by the extension sidewall position 307 of left side wall 296 and right side wall 297 and corresponding extension sidewall position 307 are surrounded respectively.

As shown in figure 12, photosensitive drums 228 is installed in to rouse and holds in the position 302.Photosensitive drums 228 comprises: cylindrical drum body 232, the positive electricity photosensitive layer of its outermost surface layer for being made by polycarbonate etc.; Metal drum axle 233, it extends along the axle center of drum body 232 on the length direction of drum body 232.Drum axle 233 is rotatable, is supported on two side plates 227 of bulging cartridge 225, and drum body 232 is then with respect to rousing axle 233 by rotatable support, and therefore, photosensitive drums 228 is arranged to and can rotates with respect to the drum axle 233 between two side plates 227.

As shown in figure 13, the left end position of drum axle 233 is outstanding from the left side wall 296 of drum cartridge 225, and the end surface at left end position is used as bulging earthing pole, and the bulging earthing contact 366 that illustrates later is housed above.

As shown in figure 12, scorotron charger 229 is installed in drum to be held in the position 302, scorotron charger 229 is recharged support zone 322 on the vertical top of the rear side of photosensitive drums 228 and supports, and oppositely install with photosensitive drums 28, the centre is left the space and is contacted with photosensitive drums 28 avoiding, and scorotron charger 229 comprises electric wire 274 and grid 275.

In charging support zone 322 inside, electric wire 274 extends between left side wall 296 and right side wall 297.As shown in figure 13, the line utmost point of being made by metal sheet 276 is installed into the left end of line 274, and the line utmost point 276 is fixed with front end on the rear wall position 205 of left side wall 296 (top of drum ground-electrode 273), is exposed to horizontal outside from the breach that is formed on the above-below direction.

As shown in figure 12, grid 275 is arranged to along the bottom side that laterally surrounds line 274, and extends between left side wall 296 and right side wall 297.As shown in figure 13, the grid electrode 277 made of metal sheet links to each other with grid 275.Here, at the position, rear end at the rear wall position 205 of left side wall 296 (vertical direction of drum ground-electrode 273), grid electrode 277 is fixed to be exposed to horizontal outside from being formed at from the lower tilt at rear wall position 205 to the breach on the direction on the vertical top at its rear portion.

Transfer roll 230 is arranged in drum and holds position 302, transfer roll 230 rotations are supported between left side wall 296 and the right side wall 297, and be arranged on above-below direction, relatively also contact with photosensitive drums 228, and between transfer roll and photosensitive drums 228, form nip from following.Transfer roll 230 is to constitute like this: metal roll shaft 234 covers the rubber rollers of being made by conductive rubber material 235.

As shown in figure 13, roughly become the transfer printing electrode hole 278 of rectangle to be formed at the lower end (under drum ground-electrode 273) at the rear side position 205 of left side wall 296,279 at transfer printing electrode is embedded in transfer printing electrode hole 278 with towards horizontal exposure.The left end of transfer printing roll shaft 234 is near transfer printing electrode 279.

As shown in figure 12, cleaning brush 231 is arranged in drum and holds position 302, and is supported by the cleaning brush support zone 323 of the side of the rear side of photosensitive drums 228.Cleaning brush 231 is implanted in by a large amount of bristles that institute constitutes on the prolongation back up pad of the horizontal expansion that is roughly rectangle.Here, cleaning brush 231 is positioned on fore-and-aft direction relative with photosensitive drums 228, and therefore, under cleaning brush was cleaned the state that supported of brush support zone 323, bristle can transversely contact the surface of photosensitive drums 228.The cleaning brush electrode of being made by metal sheet 280 is fixed on the left distal end of the back up pad of cleaning brush 231, cleaning brush electrode 280 is fixed, with in the rear end (rear of drum ground-electrode 273) at the rear side position 205 of left side wall 296, be exposed to horizontal outside from the breach that is formed on the above-below direction.

Development cartridge 226 dismountable development cartridges that are installed in are held in the position 303.As shown in Figure 7 and Figure 8, development cartridge 226 comprises: the cartridge shape frame 236 that rear side is opened, transport roller 237, developer roll 238 and regulate cutter 239 as the bed thickness of fixation unit.Assembly 37～39 is installed in the frame 236.

Hold in the storehouse 241 at toner, positively charged non-magnetic mono-component toner is used as developer.Used toner is the aggretion type toner, it obtains by this way: polymerisable monomer, for example, styrene-based monomers (as styrene) and propenyl monomer (as acrylic acid, alkyl (C1-C4) acrylate, alkyl (C1-C4) methyl acrylate) carry out copolymerization with known polymerization such as suspension polymerization and obtain.Such aggretion type toner is spherical, and shows good flowability, and it can obtain high-quality image.

In the toner of colorant as carbon black, paraffin etc. also can be compound to,, also can add as adjuvants such as silicon dioxide in order to strengthen flowability.The diameter of toner particle is approximately 6～10 μ m.

Be positioned in toner and hold in the storehouse 241 in order to stir stirrer 243 that toner holds the toner in the storehouse 241.Stirrer 243 is held the centre horizontal expansion in storehouse 241 at toner stirrer turning axle 244 supports.

In the developing chamber 242, intake roller 237 rotation is supported between two side plates, and side plate is positioned on the front lower parts and relative in a lateral direction in frame 236.Intake roller 237 comprises the roll shaft 246 of metal and horizontal expansion and the continuous roller 247 of the bubble that is covered in roll shaft 246 peripheries that conductive foams is made.

In the developing chamber 242, developer roll 238 is installed in the rear lower in storehouse, and is arranged to and can contacts with intake roller 237, and its rear lateral portion part exposes backwards from frame 236.Developer roll 38 comprises the rubber coated pressure bowl 249 that is covered in roll shaft 248 peripheries that metal development roll shaft 248 and conductive rubber material are made.In particular, rubber rollers 249 is made by the urethane rubber or the silicon rubber of carbonaceous particles and so on, and its surface coverage has fluorinated polyurethane rubber or silicon rubber.Subsidiary mentioning, two ends of development roll shaft 248 all are projected into horizontal outside from two side plates of frame, and the end face of roll shaft left distal end is used as developer roll electrode 281, and it contacts with the developer roller contact 263 that illustrates later, as shown in figure 13.

Bed thickness is regulated cutter 239 and is made by the metal leaf spring assembly, is furnished with the semicircular rubber assembly 250 that presses down that electrically insulating silicone rubber is made at its end.Bed thickness is regulated cutter 239 and is supported by the frame 236 that is positioned at developer roll 238 tops, and its lower end is relative at the rubber coated pressure bowl 249 of front side and developer roll 238, therefore, regulate at bed thickness under the elastic force effect of cutter 239, just 249 extruding contact with rubber coated pressure bowl to press down rubber assembly 250.

As shown in figure 13, be installed on the left plate of frame 236 as input gear 282 to stirrer 243, intake roller 237 and the mechanical driving force of developer roll 238 inputs.Input gear 282 is formed with connecting hole in the position therebetween, is connected with in the connecting hole relative to the coupling assembly 386 that does not rotate, illustrate later.Here, by not shown gear transmit machine, input gear 282 is connected with stirrer rotation axis 244, paper feed axle 246 and the axle 248 that develops, so that can transmit driving force.When driving force was input to the input gear 282 from coupling assembly 386, stirrer rotation axis 244, paper feed axle 246 and the axle 248 that develops rotated under the effect of driving force.

When driving force is input to from coupling assembly 386 the input gear 282 so that stirrer is a fulcrum when rotating with stirrer rotation axis 244, toner holds that toner in the storehouse 241 just is stirred and is discharged into developing chamber 242 by the toner discharge orifices 245 that are positioned at below the distribution plate 240.Under the rotary action of intake roller 237, the toner that the rotation by stirrer 243 is discharged into developing chamber 242 is transported on the rubber coated pressure bowl 249 of developer roll 238.In the case, toner is become anode by the charging of part between the rubber coated pressure bowl 249 of the foam roller 247 of intake roller 237 and developer roll 238.The toner that is transported on the rubber coated pressure bowl 249 enters into the space that presses down rubber assembly 250 of rubber coated pressure bowl 249 and bed thickness adjusting cutter 239 under the rotary action of developer roll 238, and becomes the thin layer of predetermined thickness so that can deliver on rubber coated pressure bowl 249.

By scorotron charger 229, the surface of photosensitive drums 228 is positively charged uniformly, is exposed to laser beam that scanner section 217 sends then and by high-velocity scanning, forms the electrostatic latent image based on view data thus.

Subsequently, when rubber coated pressure bowl 249 toners entrained, positively charged of developer roll 238 are brought to the opposite of photosensitive drums 228 and are in contact with it under the rotary action of developer roll 238, it is fed to the electrostatic latent image that is formed at photosensitive drums 228 surfaces, just be positioned at the surface of the photosensitive drums 228 of even positive charge and be exposed to exposure portion laser beam, that electromotive force is lower, toner can be converted into visual image thus by the conveying of selectivity.Therefore, toner image can be formed by reverse development.

Subsequently, photosensitive drums 228 and transfer roll 230 are driven and rotate with paper 203 insertions that transport path 90 is transported and wherein also carry, paper 203 is transferred between photosensitive drums 228 and transfer roll 230, and therefore, the toner image that is carried on photosensitive drums 228 surfaces just is transferred on the paper 203.

After transfer printing is finished,, when photosensitive drums 228 and cleaning brush 231 are relative, are cleaned and brush 231 and brush because photosensitive drums contact the paper scrap that attaches to photosensitive drums 228 surfaces that is caused with paper 203 when under the rotation of photosensitive drums 228.

Photographic fixing portion 19 is placed on the rear side of cartridge processing 218, and it comprises: the photographic fixing frame 251 of horizontal expansion rotatablely is supported in photographic fixing frame 251 and is arranged to relative warm-up mill 252 and backer roll 253 on above-below direction.

Warm-up mill 252 comprises: metallic element pipe 193, be positioned at the heating Halogen lamp LED 194 of metallic element pipe 193, the power that it can be carried by not shown motor and being driven in rotation.

It is also relative with it that backer roll 253 is arranged at the below of warm-up mill 252, so that warm-up mill 252 is pressurizeed.Backer roll 253 constitutes by this way: metal roll shaft 254 covers the roller 255 that elastomeric material is made, and can be by the rotary driving force driven in rotation of warm-up mill 252.

In photographic fixing portion 219, when paper 203 passes space between warm-up mill 252 and the backer roll 253, be transported to toner on the paper 203 just by heat fixation.The paper 203 that toner has been fixed is transported on above-below direction the paper emission path 256 that extends towards the upper surface of main body cover 202.By being installed in the paper discharging roller 257 of paper emission path end, the paper 203 that is sent to paper emission path 256 is transported on the paper discharge plate 258 on the upper surface that is formed at main body cover 202.

Figure 14 is the inner structure floor map of laser printer 201.By resin make and be arranged in the horizontal opposed facing as the first side wall left frame 331 and be arranged in the main body cover 202 as the correct frame 332 of second sidewall.Guide plate 286 extends between left frame 331 and correct frame 332, and cartridge processing 218 is positioned in the top of guide plate 286.

As shown in figure 15, from side view, left frame 331 is roughly the upwardly extending rectangle in front and back.Import a plurality of input gears of driving force by transmitting gear 338,, be supported in the outer surface of left frame 331 as intake roller gear 333.Gear sheet 334, high-tension circuit plate 335 and main circuit board 336 also all are arranged in the outer surface of left frame 331.

Gear sheet 334 is made by metal sheet, and is arranged to from the front edge of left frame 331, extends back along the lower edge of the outer surface of left frame 331.Be supported in left frame over against gear sheet 334 the surface be: as the motor 337 of drive source; The driving force that motor 337 is transmitted passes to a plurality of transmission gears 338 as first gear of photosensitive drums 228, paper tray 208 (regulations and parameters 215) and intake roller 209.

High-tension circuit plate 335 be one in order to improve the power supply circuit board that is fixed of carrying the single-phase voltage of 100V voltage from the outside of printer 201, to produce the high pressure bias voltage and to be applied to scorotron charger 229, transfer roll 230, cleaning brush 231 and developer roll 238 respectively.From side view, high-tension circuit plate 335 shapes are roughly rectangle, it is by the opposite direction that transversely is arranged in gear sheet 334 from the outside, therefore, its end portion can and the upper part of gear sheet 334 go up overlapping in laterally (opposite direction between left frame 331 and the correct frame 332).

As shown in figure 16, with left frame 331 over against the surface of high-tension circuit plate 335, be equipped with: charging transformer 339, supply with scorotron charger 229 as transformer to produce discharge bias; Transfer printing transformer 340 is supplied with transfer roll 230 as transformer to produce transfer bias; Development transformer 341 is supplied with developer roll 238 as transformer to produce the development bias voltage; Discharge bias outlet terminal 342, the voltage outlet terminal is with the output discharge bias as a supplement; Transfer bias outlet terminal 343, another bias voltage outlet terminal of voltage outlet terminal is with the output transfer bias as a supplement; Development bias voltage outlet terminal 344, another of voltage outlet terminal or the 3rd bias voltage outlet terminal are with output development bias voltage as a supplement; Grid bias voltage outlet terminal 345, another of voltage outlet terminal or the 3rd bias voltage outlet terminal are with the grid output grid bias voltage to scorotron charger 229 as a supplement; Cleaning bias voltage outlet terminal 346, another of voltage outlet terminal or the 3rd bias voltage outlet terminal are to clean bias voltages to cleaning brush 231 outputs as a supplement; In order to switch output and to stop respectively from the transistor 347,348 and 349 of the bias voltage of each bias voltage outlet terminal 342～346; In order to prevent the hot baffle 350 of transistor 347 heat damage; Grounding terminals 351 and 352 in order to ground connection; Connector 353,354 and 355 with the outside energising; And in order to detect the fluorescence detector 395 of the galvanometric position of forming by back, unshowned location sensor (a kind of perception paper 203 arrives the launch time of the laser beam of sending with gated sweep portion 217).

Charging transformer 339, transfer printing transformer 340, development transformer 341 and transistor 348,349 be arranged at left frame 331 over against high-tension circuit plate 335 the surface, in the horizontal not with gear sheet 334 overlapping areas.And transistor 347, grounding terminals 351 and 352, connector 353/354/355 and detecting device 395 be arranged at left frame 331 over against high-tension circuit plate 335 the surface, in the horizontal with gear sheet 334 overlapping areas.That is to say, be assembled to left frame 331 over against the part on surface of high-tension circuit plate 335 in, higher relatively part is arranged at transversely not the surf zone overlapping with gear sheet 334, and shorter part is arranged at transversely the surf zone overlapping with gear sheet 334 relatively.

Discharge bias outlet terminal 342, transfer bias outlet terminal 343, development bias voltage outlet terminal 344, grid bias voltage outlet terminal 345 and cleaning bias voltage outlet terminal 346 be arranged at left frame 331 over against high-tension circuit plate 335 the surface, in the horizontal not with gear sheet 334 overlapping areas.

In particular, with left frame 331 over against the surface of high-tension circuit plate 335, charging transformer 339 is arranged on the upper part and intermediate member on the fore-and-aft direction, laterally not overlapping with gear sheet 334, in the back of charging transformer 339, development bias voltage outlet terminal 344, grid bias voltage outlet terminal 345 and cleaning bias voltage outlet terminal 346 are arranged side by side from the front side in order.Discharge bias outlet terminal 342 also is arranged in the back of charging transformer 339.Transfer printing transformer 340 is arranged at the upper end of front side, and is laterally not overlapping with gear sheet 334.Development transformer 341 is arranged at the lower end (below of transfer printing transformer 340) of front side, and is laterally not overlapping with gear sheet 334.In addition, transfer bias outlet terminal 343 is arranged at the front of development transformer 341, and transistor 348 and 349 is arranged on the vertical opposite at development transformer 341 rear portions, hot baffle 350 is arranged at the lower end of rear side, laterally and gear sheet 334 overlapping, transistor 347 is arranged at the top of hot baffle 350.And, grounding terminals 351 and connector 354,355 lower edge along high-tension circuit plate 355, side by side, grounding terminals 352 is arranged at the place, base angle, back of high-tension circuit plate 355 under hot baffle 350.Connector 353 be arranged at grounding terminals 352 directly over.

According to such arrangement, be fixed on left frame 331 over against the part on surface of high-tension circuit plate 335 in, the higher relatively part that comprises charging transformer 339 is arranged at transversely not the surf zone overlapping with gear sheet 334, thus, these higher relatively parts are all overlapping with gear sheet 334 on above-below direction or fore-and-aft direction, as shown in figure 17.

Distance between discharge bias outlet terminal 342 and the transfer bias outlet terminal 343, all bigger than the distance between the distance between discharge bias outlet terminal 342 and the development bias voltage outlet terminal 344 and distance between the grid bias voltage outlet terminal 345 and the cleaning bias voltage outlet terminal 346, therefore, can guarantee not have between discharge bias outlet terminal 342 and the transfer bias outlet terminal 343 leaky takes place.

As shown in figure 18, on the outer surface of left frame 331, the coupling assembling 356,358,359 and 360 that twines the spring type constitute by electric wire is arranged to towards the outstanding state of lateral outer side respectively, the middle part of the upper end-face edge of the outer surface on fore-and-aft direction, and in the horizontal, relative with discharge bias outlet terminal 342, development bias voltage outlet terminal 344, grid bias voltage outlet terminal 345, cleaning bias voltage outlet terminal 346 respectively position.Near the preceding upper end of the outer surface of left frame 331, the coupling assembling 357 that is twined the spring type that constitutes by electric wire is arranged to towards the outstanding state of lateral outer side, relative with transfer bias outlet terminal 343 in the horizontal position.

Over against discharge bias outlet terminal 342 over against coupling assembling 356 and development bias voltage outlet terminal 344 over against coupling assembling 356 between, be formed with the flank 367 that prevents the generation of leaking electricity therebetween as guard assembly, it is outstanding from the outer surface of left frame 331.

Flank 367 is arranged at the position that the discharge bias outlet terminal is 342 residing, charging transformer 339 has just begun to have sliding friction.As shown in figure 19, flank 367 is formed with the surperficial 367C of inclination, it is between the front end surface 367A and surperficial 367B relative with high-tension circuit plate 355, be inclined upwardly towards lateral outer side, here, when high-tension circuit plate 355 was assembled to the outer surface of left frame 331, charging transformer 339 was directed into the front side of flank 367 by slidingsurface 367C and flank 367.And the rear end face of charging transformer 339 is restricted by the sliding friction of the front end face 367A of flank 367, high-tension circuit plate 335 be brought to left frame 331 outer surface near.Then, discharge bias outlet terminal 342 just relies on coupling assembling 356 reliably.That is to say that flank also leads to rely on coupling assembling 356 to discharge bias outlet terminal 342 as pilot unit.

When discharge bias outlet terminal 342 is restricted by the sliding friction of the front end face of flank 367, be assembled to the outer surface of left frame 331 when high-tension circuit plate 355, thus, discharge bias outlet terminal 342, transfer bias outlet terminal 343, development bias voltage outlet terminal 344, grid bias voltage outlet terminal 345 and cleaning bias voltage outlet terminal 346 just respectively in the horizontal with coupling assembling 356,357,358,359 and 360 Elastic Contact.

High-tension circuit plate 355 is arranged to gear sheet 334 overlapping, unshowned screw passes through grounding terminals 351 and 352, be stapled in the threaded hole that is formed on the gear sheet 334, thus, high-tension circuit plate 355 can be fixed on the gear sheet 334, and it and gear sheet 334 are electric connections, and pass gear sheet 334 ground connection.

Simultaneously, as shown in figure 20, electric wire contact 361, transfer printing contact 362, developer roller contact 363, grid contact 364 and cleaning contact 365 are arranged at the inner surface of left frame 331.When cartridge processing 218 is installed on the main body cover 202, these contacts are in the position relative with the electric wire electrode 276 that is arranged in cartridge processing 218 left-hand face, transfer printing electrode 279, developer roll electrode 281, grid electrode 277 and cleaning electrode 280 respectively, and these contacts respectively with electrode near.

By the electric wire 368 (referring to Figure 18) as the discharge bias conductor, electric wire contact 361 links to each other with the coupling assembling 356 that is in discharge bias outlet terminal 342 opposites.Therefore, under cartridge processing 218 is installed in situation on the main body cover 202, between the discharge bias outlet terminal 342 of high-tension circuit plate 355 and the electric wire electrode 276 of cartridge processing 218 through coupling assembling 356, electric wire 368 and electric wire contact 361 and electric connection, walk around gear sheet 334 simultaneously, and be applied to the electric wire 274 of scorotron charger 229 from the discharge bias of discharge bias outlet terminal 342 outputs.

By another electric wire 369 (referring to Figure 18) as the discharge bias conductor, transfer printing contact 362 links to each other with the coupling assembling 357 that is in transfer bias outlet terminal 343 opposites.Therefore, under cartridge processing 218 is installed in situation on the main body cover 202, between the transfer bias outlet terminal 343 of high-tension circuit plate 355 and the transfer printing electrode 279 of cartridge processing 218 through coupling assembling 367, electric wire 369 and electric wire contact 362 and electric connection, walk around gear sheet 334 simultaneously, and be applied to the transfer roll 230 from the transfer bias of transfer bias outlet terminal 343 outputs.

By another electric wire 370 (referring to Figure 18) as the bias voltage conductor, developer roller contact 363 links to each other with the coupling assembling 358 that is in development bias voltage outlet terminal 344 opposites.Therefore, under cartridge processing 218 is installed in situation on the main body cover 202, between the development bias voltage outlet terminal 344 of high-tension circuit plate 355 and the developer roll electrode 281 of cartridge processing 218 through coupling assembling 358, electric wire 370 and developer roller contact 363 and electric connection, walk around gear sheet 334 simultaneously, and be applied to the developer roll 238 from the discharge bias of development bias voltage outlet terminal 344 outputs.

By another electric wire 371 (referring to Figure 18) as the bias voltage conductor, grid contact 364 links to each other with the coupling assembling 359 that is in grid bias voltage outlet terminal 345 opposites.Therefore, under cartridge processing 218 is installed in situation on the main body cover 202, between the grid bias voltage outlet terminal 345 of high-tension circuit plate 355 and the grid electrode 277 of cartridge processing 218 through coupling assembling 359, electric wire 371 and grid contact 362 and electric connection, walk around gear sheet 334 simultaneously, and be applied to the grid 275 of scorotron charger 229 from the grid bias voltage of grid bias voltage outlet terminal 345 outputs.

By another electric wire 372 (referring to Figure 18) as the bias voltage conductor, cleaning contact 365 links to each other with the coupling assembling 360 that is in cleaning bias voltage outlet terminal 346 opposites.Therefore, under cartridge processing 218 is installed in situation on the main body cover 202, between the cleaning bias voltage outlet terminal 346 of high-tension circuit plate 355 and the cleaning electrode 280 of cartridge processing 218 through coupling assembling 360, electric wire 372 and cleaning contact 365 and electric connection, walk around gear sheet 334 simultaneously, and be applied to the cleaning brush 231 from the cleaning bias voltage of cleaning bias voltage outlet terminal 346 outputs.

And as shown in figure 20, drum earthing contact 366 is arranged on the inner surface of left frame 311.When cartridge processing 218 was installed on the main body cover 202, drum earthing contact 366 was arranged at and the relative position of bulging ground-electrode 273 on the left-hand face that is in cartridge processing 218, and here rouse ground-electrode 273 and bulging earthing contact near.Drum earthing contact 366 and gear sheet 334 are electric connections, and pass gear sheet 334 ground connection.Therefore, when the bulging ground-electrode 273 that is arranged in cartridge processing 218 left-hand face, by near drum during earthing contact 366, the drum axle 233 of photosensitive drums 238 just passes bulging ground-electrode 273, drum earthing contact 366 and gear sheet 334 ground connection by the installation of cartridge processing 218 on main body cover 202.

The part regulations and parameters driving force transmission gear 377 that is supported in left frame 331 as the rotation of second gear is exposed to the inside surface of left frame 331 and is positioned at the lower end part of its front side.When paper tray 208 (referring to Fig. 7) is fixed on the main body cover 202, input gear 267 and 377 engagements of regulations and parameters driving force transmission gear.When regulations and parameters is transmitted gear 377 under the driving force effect of motor 337 (referring to Figure 15), during according to clockwise direction shown in Figure 9 (being counterclockwise among Figure 20) rotation, 267 of gears of input are rotated counterclockwise, and regulations and parameters driven wheel 268 turns clockwise, therefore, the front end of paper supporting plate 214 is just lifted by regulations and parameters 215, as previously mentioned.In this case, regulations and parameters driving force transmission gear 377 is driven by counter clockwise direction rotation shown in Figure 20, and, it gives input gear 267 power to promote the paper tray 208 on its installation direction, thus, paper tray 208 can be under the synergy of regulations and parameters driving force transmission gear 377 and the pallet locking plate 279 that illustrates later, from 202 dismountings of the main body cover through overregulating like this.

As shown in figure 18, and coupling assembling 356,358,359 and 360 on the above-below direction over against and and high-tension circuit plate 335 be coated with the heat insulating lamina 373 that prevents that electric leakage from taking place between high-tension circuit plate 335 (discharge bias outlet terminal 342, transmission bias voltage outlet terminal 343, development bias voltage outlet terminal 344, grid bias voltage outlet terminal 345 and cleaning bias voltage outlet terminal 346) and gear sheet 334 at the position, upper end that laterally (between left frame 331 and the correct frame 332 over against direction) goes up overlapping gear sheet 334.

Insulation course 373 is made by translucent resin material, the profile phase correspondence of the lower end part of shape and gear sheet 334.Insulation course 373 comprises: be arranged to the contrast surface position 396 relative in the horizontal with gear sheet 334; From the upper end-face edge and the front edge at contrast surface position 396, the crooked and edge 397 of extending on the direction of itself and gear sheet 334 opposition.Gear sheet 334 and high-tension circuit plate insulate by contrast surface position 396, and gear sheet 334 and coupling assembling 356,357,358,359 and 360 insulate by edge 397.

Main circuit board 336 is a control circuit board, and it comprises CPU of each position operation of controlling laser printer 201 or the like.As shown in figure 15, from side view, main circuit board 336 roughly forms the shape of alphabetical L, and it is arranged in the space that is formed on the gear sheet 334, and high-tension circuit plate 335 is on the outer surface of left frame 331, therefore, main circuit board can be not overlapping with gear sheet 334 or high-tension circuit plate 335.

Show that as Figure 22 in side view, correct frame 332 is formed on the upwardly extending rectangle in front and back substantially, and is equipped with low-voltage circuit plate 374 and fan 375 at its outer surface.

Low-voltage circuit plate 374 is one and and flows to the voltage of its 100V from the outside of printer 201 in order to reducing the power supply circuit board of unidirectional voltage, to produce the required low-voltage of driving motor 337 (referring to Figure 15).Low-voltage circuit plate 374 is arranged to the circuit board surface that transformer etc. is installed can be over against the outer surface of correct frame 332., and circuit board can extend forward along its lower edge from the back edge of correct frame 332.And low-voltage circuit plate 374 is by ground wire 376 and correct frame 332 ground connection (being connected with ground).

The effect of fan 375 is heat discharge that cartridge processing 218 and photographic fixing portion 219 produced outsides to main body cover 202, and it is positioned to above low-voltage circuit plate 374, and the horizontal inboard and the lateral outer side of correct frame 332 fused.

As shown in figure 23, the groove 378 towards the lateral outer side depression is formed at the inner surface of correct frame 332 and the lower end part of its front side.As preventing the latch mechanism that paper tray 208 (referring to Fig. 7) is removed, pallet locking plate 279 is also contained in the groove 378.

As shown in figure 24, pallet locking plate 279 comprises:, its terminal bending bend arm 380 from groove 378 to stretch out upwardly extending in front and back; Link to each other with the end of bend arm 380 in abutting connection with the position 381, it extends upward in front and back and its cross section is the letter U type.The rotatable upwardly extending axle 382 of upper and lower that is fixed in groove 378 in the bottom of bend arm 380.Unshowned spring links to each other with bend arm 380, and 381 are promoted on the direction that protrudes in groove 378 by spring usually in abutting connection with the position.

When paper tray 208 was installed on the main body cover 202, locking plate junction 271 was arranged at 381 the position in abutting connection with the position of closing on pallet locking plate 279 on the paper tray.Along with the motion of locking plate junction 271, owing to be subjected to the thrust of unshowned spring, pallet locking plate 279 is squeezed in the direction that is retracted into groove 378 from adjacency position 381.When locking plate junction 271 was crossed in abutting connection with position 381, because the acting force of unshowned spring, pallet locking plate 279 was returned in abutting connection with the position 381 directions that protrude in groove 378 again, and 381 was taken back from the front side of locking plate junction 271 again in abutting connection with the position.Therefore, paper tray 208 can be prevented from accidental from the main body cover 202.

As shown in figure 23, when paper tray 208 was contained on the main body cover 202, the inner surface of correct frame 332 was equipped with the supporting plate earthing contact 383 that is fit to be formed at the ground hole 272 (referring to Figure 11) on the paper tray 208 as earthing contact.

As shown in figure 25, supporting plate earthing contact 383 can form with curved the having a certain degree of electric wire, and it is laterally inwardly outstanding to extend upward in front and back from the breach 384 on the inner surface that is formed at correct frame 332.Supporting plate earthing contact 383 elastic deformation in the horizontal.When paper tray 208 was contained on the main body cover 202, elastic deformations took place recalling in the breach 384 in supporting plate earthing contact 383, and it slides with respect to the right side wall 263 of paper tray 208.When paper tray 208 had been contained on the main body cover 202, supporting plate earthing contact 383 marched forward from breach 384, and it enters the ground hole 272 of paper tray 208, with near the metal paper supporting plate 214 in the paper tray 208.

An end that forms the electric wire of supporting plate earthing contact 383 extends forward along the outer surface of correct frame 332, and further is bent upwards to contact from the sheet metal 385 on opposite following and that be positioned at the downstream portion 289 of guide plate 286.And sheet metal 385 and low-voltage circuit plate 374 (referring to Figure 22) are by unshowned ground wire electric connection.Therefore, when paper tray 208 was contained in the supporting plate earthing contact 383 that holds on the main body cover 202 near paper supporting plate 214, paper supporting plate 214 and low-voltage circuit plate 374 were by supporting plate earthing contact 383 and sheet metal 385 and electric connection, thus ground connection.

As shown in figure 26, left frame 331 is equipped with: dismountable coupling assembly 386, and its dismountable connecting hole 283 (referring to Figure 13) with input gear 282 links to each other; Arm shape assembly 387 in order to the mounting or dismounting coupling assembly.

Arm shape assembly 387 is arranged at the front of coupling assembly, between left frame 331 and the gear sheet 334, on the side relative with the side that discharge bias outlet terminal 342, development bias voltage outlet terminal 344, grid bias voltage outlet terminal 345 and cleaning bias voltage outlet terminal 346 are housed.Arm shape assembly 387 also comprises on the whole: along the arm shape position 388 that fore-and-aft direction extends; Be arranged in the cam position 389 of 388 rear ends, arm shape position.

Be formed with in front and back upwardly extending slit on the cam position 389, coupling assembly can pass slit and adorn slotting.Shown in Figure 27 A and 27B, form in the horizontal thicker retreat position 390 be arranged at the cam rear end around, in the horizontal the thinner protruded position 391 of Xing Chenging be arranged at the cam front end around.

Arm shape assembly 387 is supported can move along left frame on fore-and-aft direction, passes cam at coupling assembly 386 and adorns under the state of the rear end that is inserted in arm shape assembly.Arm shape assembly 387 is arranged to and can moves upward in front and back with opening with closure of protecgulum 207.

Coupling assembly 386 be arranged to transversely be contained in main body cover 202 on the connecting hole 283 of input gear 282 of cartridge processing 218 relative.The rotating drive power that motor 337 (referring to Figure 15) from be contained in main body cover 202 transmits is imported into coupling assembly 386.Coupling assembly 386 is squeezed in the horizontal pushes away spring 392 (referring to Figure 20) inwardly, that is to say, promotes towards connecting hole 283.

When owing to cartridge processing 218 is installed to main body cover 202 or removal from the main body cover 202, and protecgulum 207 is when being opened, the arm shape assembly 387 that links to each other with protecgulum 207 is with regard to advance the puck, and retreats position 390 beginnings and the coupling assembly shown in Figure 27 B 386 engages.Then, coupling assembly 386 pushes away under the thrust of spring 392 crowded, retreats from the connecting hole 283 of importing gear 282.

When because after being installed to cartridge processing 218 on the main body cover 202, when protecgulum 207 is in closure state, just motion backwards of the arm shape assemblies 387 that protecgulum 207 links to each other, protruded position 391 beginnings and the coupling assembly shown in Figure 27 A 386 engage.Then, coupling assembly 386 pushes away under the thrust of spring 392 crowded, and the connecting hole 283 that advances to input gear 282 is sentenced by relatively rotatable connection.Therefore, the driving force that transmits from coupling assembly 386 just is sent to input gear 282, and intake roller 237, developer roll 238 and stirrer 243 then are transferred to the drive force rotation of input gear 282.

As mentioned above, in laser printer 201, high-tension circuit plate 335 is at least, its parts are arranged to not overlapping with gear sheet 334 in the horizontal, and positions such as the discharge bias outlet terminal 342 of high-tension circuit plate 335, development bias voltage outlet terminal 344, grid bias voltage outlet terminal 345 and cleaning bias voltage outlet terminal 346 are not overlapping with gear sheet 334.Thereby except can making that by the outer surface that high-tension circuit plate 335 and gear sheet 334 reasonably is arranged in left frame 331 size of laser printer 201 is reduced, the leakage that is biased in gear sheet 334 peripheries also has been prevented from.

Discharge bias outlet terminal 342, development bias voltage outlet terminal 344, grid bias voltage outlet terminal 345 and cleaning bias voltage outlet terminal 346 are placed side by side along the terminal edge of high-tension circuit plate 335, and these discharge areas of high-tension circuit plate 335 are not overlapping in the horizontal with gear sheet 334.Therefore, these terminals and and gear sheet 334 between distance can widen, the leakage that is biased in gear sheet 334 peripheries can further be prevented.

The distance that the bias voltage leakage does not take place between discharge bias outlet terminal 342 and transfer bias outlet terminal 343 can be guaranteed that also therefore, the generation that bias voltage leaks between discharge bias outlet terminal 342 and the transfer bias outlet terminal 343 also can be prevented from.

Distance between discharge bias outlet terminal 342 and the transfer bias outlet terminal 343 can be all bigger than the distance between the distance between discharge bias outlet terminal 342 and the development bias voltage outlet terminal 344 and distance between the grid bias voltage outlet terminal 345 and the cleaning bias voltage outlet terminal 346, therefore, the generation of the leakage between discharge bias outlet terminal 342 and the transfer bias outlet terminal 343 can be prevented from.

Flank 367 be inserted into discharge bias outlet terminal 342 over against coupling assembling 356 and development bias voltage outlet terminal 344 over against coupling assembling 358 between, therefore leakage therebetween also can be prevented from.

When on the outer surface that high-tension circuit plate 355 will be installed to left frame 331, flank also leads to rely on coupling assembling 356 to discharge bias outlet terminal 342 as pilot unit.Therefore, not only discharge bias outlet terminal 342 can be by reliably and 356 close linking to each other of coupling assembling, but simplified structure and reduce number of spare parts also simultaneously.And, in connection, charging transformer 339 can and the front end surface 367A of flank 367 between sliding friction, thus, discharge bias outlet terminal 342 can be enhanced near the efficient of coupling assembling 356 these connecting moves.Flank 367 has the surperficial 367C of inclination, and therefore, discharge bias outlet terminal 342 is during near coupling assembling 356, charging transformer 339 can by reliably and the front end surface 367A of flank 367 carry out sliding friction.

Electric wire contact 361, transfer printing contact 362, developer roller contact 363, grid contact 364 and cleaning contact 365 are arranged at the inner surface of left frame 331.Therefore, can be shortened in order to the electric wire 368,369,370,371 and 372 that respectively these contacts and discharge bias outlet terminal 342, transfer bias outlet terminal 343, development bias voltage outlet terminal 344, grid bias voltage outlet terminal 345 and cleaning bias voltage outlet terminal 346 is linked to each other, and the wire structures that can obtain simplifying.

When cartridge processing 218 is installed on the main body cover 202, the bulging ground-electrode 273 that is installed in cartridge processing 218 left-hand face is near the bulging earthing contact 366 that is positioned at the left frame inner surface, thus, the drum axle 233 of photosensitive drums 228 can pass through drum ground-electrode 273, drum earthing contact 366 and gear sheet 334 and ground connection.Therefore,, the ground connection of the drum axle 233 of photosensitive drums 228 can be realized by simple structure.

The arm shape assembly 387 that moves forward and backward in order to control coupling assembly 386 is arranged at the front of coupling assembly 386, and coupling assembly 386 is positioned on the relative side, side that discharge bias outlet terminal 342, development bias voltage outlet terminal 344, grid bias voltage outlet terminal 345 and cleaning bias voltage outlet terminal 346 are housed.Therefore, arm shape assembly 387 can move upward in front and back and the obstruction of each bias voltage outlet terminal can be prevented from.

Arm shape assembly 387 is arranged in the space between left frame 331 and the gear sheet 334, and the space between left frame 331 and the gear sheet 334 can be by efficiently as the space of discharging arm shape assembly 387.

The side that high-tension circuit plate 335 is arranged to its surface that charging transformer 339 is installed and gear sheet 334 over against.Therefore, charging transformer 339 can be prevented to the horizontal appearance of high-tension circuit plate 335 outstanding.Therefore, the lateral dimension of printer 201 can further be dwindled, and consequently, can realize further dwindling of printer 201 sizes.

Higher relatively part such as charging transformer 339 are arranged at transversely not overlapping with gear sheet 334 surf zone of high-tension circuit plate 335, therefore, higher part be arranged to the direction of quadrature transverse on overlapping with gear sheet 334, therefore, the spacing between high-tension circuit plate 335 and the gear sheet 334 can be shortened.So the lateral dimension of printer 201 can further be dwindled, and can realize further dwindling of printer 201 sizes.

The bias voltage outlet terminal on the high-tension circuit plate 335 and the contact of inner surface that is arranged in left frame 331 are by corresponding coupling assembling 356,357,358,359 and 360 and electric connection is walked around gear sheet 334 simultaneously.Therefore, needn't pass from sheet 334 in order to the electric wire that connects each bias voltage outlet terminal and corresponding contact.Consequently, can realize being used for each bias voltage outlet terminal and the simplification of the wire structures of the electric connection of contact accordingly.

Each coupling assembling 356,357,358,359 and 360 electric wire twine structure and all can be simplified.

Paper tray 208 is assembled on the main body cover 202, and lower platen earthing contact 383 abuts against on the paper supporting plate 214, therefore, by lower platen earthing contact 383 and sheet metal 385, paper supporting plate 214 can with low-voltage circuit plate 374 electric connections, and can be by low-voltage circuit plate 374 and ground connection.

Paper tray 208 can be under the synergy of regulations and parameters driving force transmission gear 377 and pallet locking plate 279, coherent dismounting from main body cover.Therefore, pallet locking plate 279 not necessarily will be contained on the left frame 331, and the structure that the methodization of paper tray 2080 is removed also can be simplified.

In order to the electric wire contact 361 of cartridge processing 218 electric connections, transfer printing contact 362, developer roller contact 363, grid contact 364 and cleaning contact 365, and the drive system of cartridge processing 218 (motor 337 and transmission gear 338) is concentrated and is arranged on the left frame.Therefore, the design limit of correct frame 232 has just been loosened.Therefore, correct frame 232 can be designed to stable support cartridge processing 218.Therefore according to this design, the support that cartridge processing 218 can be stabilized can realize that electric power and driving force present to processing the stable of cartridge 218.

Above explanation in, describe independently embodiment of these two of first embodiment of the invention process and second embodiment in detail.Yet, but the subject matter that is comprised in above-mentioned two examples of those skilled in the art's combination in any, thus the imaging device that has above-mentioned two example strong points concurrently formed.

The purpose of quoting above-mentioned example absolutely not in order to state to the greatest extent or this invention to be limited to the precise forms that discloses, is fully possible according to above-mentioned prompting or by resulting correction and change in the practical application to this invention only for the usefulness of elaboration and explanation.Selecting and describe this example is can utilize this invention and do various corrections to adapt to the special purpose of expection in different instances in the hope of making the correlation experience personnel for principle and the actual application scheme of explaining this invention.Scope of the present invention is limited by back appending claims and equivalence explanation thereof.

Claims (59)

1. an imaging device is characterized in that, comprises;

The feed unit of feeding recording medium;

The image-generating unit of imaging on the recording medium of feed unit feeding;

Will be through the output unit of the recording medium of image-generating unit imaging output;

The power supply circuit board of the power supply that image-generating unit is transmitted electric power is housed, and this power supply circuit board is disposed at least one lateral parts in the lateral parts of imaging device during along the recording medium transverse observation;

The control circuit board of the controller of control image-generating unit is housed, and this control circuit board is disposed at least one lateral parts in the described lateral parts; And

The transport path of conveying recording medium, this transport path leaves this position of this feed unit downwards towards formed this image space inclination of image by image-generating unit from the recording medium of feed unit feeding, and this transport path is arranged to:

Feed unit picks up that recording medium is this to be picked up direction and transport path to carry this image formation state throughput direction of recording medium that is in image space to be set at opposite mutually; And

This image formation state throughput direction and output unit output form this outbound course of record images medium through image-generating unit and are set at opposite mutually.

2. according to the described imaging device of claim 1, it is characterized in that transport path is furnished with the guide plate relative with the recording medium lower surface,

Wherein at this guide plate at the lower surface of guide plate be furnished with a reinforcement plate in guide plate upstream-side-end of guide plate for the image formation state throughput direction at least.

3. according to the described imaging device of claim 2, it is characterized in that guide plate is formed from a resin, and reinforcement plate is made by sheet metal.

4. according to the described imaging device of claim 2, it is characterized in that guide plate supports feed unit in upstream-side-end.

5. according to the described imaging device of claim 4, it is characterized in that guide plate forms by the zone of excising the feed unit setting from the upstream-side-end of guide plate.

6. according to the described imaging device of claim 5, it is characterized in that reinforcement plate keeps feed unit from the both sides with the direction of recording medium transporting direction quadrature.

7. according to the described imaging device of claim 6, it is characterized in that reinforcement plate is formed with the recess that surrounds feed unit.

8. according to the described imaging device of claim 2, it is characterized in that guide plate is formed with first air vent that allows air pass through guide plate,

Wherein reinforcement plate is formed with second air vent that allows air pass through reinforcement plate and allow first ventilating hole ventilation.

9. according to the described imaging device of claim 8, it is characterized in that guide plate is formed with a plurality of first air vents, and reinforcement plate is formed with a plurality of second air vents,

Wherein total open area of second air vent is greater than total open area of first air vent.

10. according to the described imaging device of claim 8, it is characterized in that, comprise further that also generation flows to the fan of the air-flow of first air vent from second air vent.

11., it is characterized in that image-generating unit comprises the delivery unit of the image of transfer printing recording medium according to the described imaging device of claim 8,

Wherein guide plate is set to extend under transfer printing unit,

Wherein guide plate is formed with the 3rd air vent in the position relative with transfer printing unit, and the 3rd air vent passes through guide plate by air.

12., it is characterized in that reinforcement plate is positioned on the image formation state throughput direction upstream one side with respect to the 3rd air vent at the downstream of image formation state throughput direction ora terminalis according to the described imaging device of claim 11.

13., it is characterized in that reinforcement plate is a ground connection according to the described imaging device of claim 1.

14., it is characterized in that feed unit is by reinforcement plate ground connection according to the described imaging device of claim 13.

15., it is characterized in that when the horizontal direction of recording medium was observed, power supply circuit board and control circuit board were disposed at the end, the same side of imaging device according to the described imaging device of claim 1.

16., it is characterized in that power supply circuit board comprises that generation will be added to the high-tension circuit plate of the bias voltage on the image-generating unit according to the described imaging device of claim 1.

17., it is characterized in that high-tension circuit plate and control circuit board are configured in same lateral parts in the described lateral parts according to the described imaging device of claim 16.

18. according to the described imaging device of claim 16, it is characterized in that, further comprise:

Be configured to have the first side wall and second sidewall of a predetermined space toward each other and between the two;

Drive source is disposed at the first side wall with respect to this side of image-generating unit, and produces the driving force that is used for image-generating unit;

Transmit first gear of driving force to image-generating unit from drive source; And

The gear sheet is disposed at the first side wall with respect to this side of image-generating unit, and supports first gear,

Wherein image-generating unit is configured between the first side wall and second sidewall,

The high-tension circuit plate is relative with the gear sheet to be configured in the first side wall with respect to a side of imaging device and have displacing part, this displacing part on the reverse direction of the first side wall and second sidewall, move apart from the gear sheet and

This high-tension circuit plate is furnished with output bias and is disposed at the supply voltage output end of described displacing part.

19., it is characterized in that the supply voltage output end is disposed at an ora terminalis of the displacing part of high-tension circuit plate according to the described imaging device of claim 18.

20., it is characterized in that further comprise the insulating trip that covers gear sheet overlapping part, this overlapping part is overlapping with the high-tension circuit plate on opposite direction according to the described imaging device of claim 18.

21., it is characterized in that image-generating unit comprises according to the described imaging device of claim 18:

Carry the photosensory assembly of developer image;

The charhing unit that has lead and photosensory assembly is charged; And

Make the transfer printing unit of developer image entrained on the photosensory assembly to the recording medium, wherein supply voltage output end and comprise:

The discharge bias output terminal of guiding line output discharge bias; And

To the transfer bias output terminal of transfer printing unit output transfer bias,

It is last that wherein discharge bias output terminal and transfer bias output terminal are configured in the distance that does not have the electric leakage generation between the two.

22., it is characterized in that image-generating unit comprises according to the described imaging device of claim 18:

Photosensory assembly;

The charhing unit that has lead and grid and photosensory assembly is charged;

Make the developing cell of the latent electrostatic image developing that forms on the photosensory assembly;

With the developer image of carrying on the photosensory assembly transfer printing unit to the recording medium; And

The cleaning unit of clean feel optical assembly,

Wherein supplying voltage output end comprises:

Discharge bias is outputed to discharge bias output terminal on the lead;

Transfer bias is outputed to the transfer bias output terminal of transfer printing unit; And

The 3rd bias voltage output terminal, output will output to grid bias voltage on the grid, will output to the development bias voltage of developing cell and one of will output in the cleaning bias voltage of cleaning unit at least,

The distance between discharge bias output terminal and the transfer bias output terminal wherein one of is set in the distance of being longer than between discharge bias output terminal and the 3rd bias voltage output terminal and the distance between transfer bias output terminal and the 3rd bias voltage output terminal at least.

23., it is characterized in that image-generating unit comprises according to the described imaging device of claim 18:

Photosensory assembly;

Charhing unit to the photosensory assembly charging;

Make the developing cell of the latent electrostatic image developing that forms on the photosensory assembly; And

With the developer image of carrying on the photosensory assembly transfer printing unit to the recording medium,

Wherein supplying voltage output end comprises:

The charging bias voltage is outputed to the charging bias voltage output terminal of charhing unit;

Transfer bias is outputed to the transfer bias output terminal of transfer printing unit; And

The development bias voltage is outputed to the development bias voltage output terminal of developing cell,

Wherein charge distance between bias voltage output terminal and the transfer bias output terminal one of is set in the distance of being longer than between charging bias voltage output terminal and the development bias voltage output terminal and the distance between transfer bias output terminal and the development bias voltage output terminal at least.

24., it is characterized in that image-generating unit comprises according to the described imaging device of claim 18:

Photosensory assembly;

The charhing unit that has lead and grid and photosensory assembly is charged;

Make the developing cell of the latent electrostatic image developing that forms on the photosensory assembly; And

With the developer image of carrying on the photosensory assembly transfer printing unit to the recording medium; And

The cleaning unit of clean feel optical assembly,

Wherein supplying voltage output end comprises:

Discharge bias is outputed to discharge bias output terminal on the lead; And

Another bias voltage output terminal, output to output to transfer printing unit transfer bias, to output to grid bias voltage on the grid, will output to the development bias voltage of developing cell and one of will output in the cleaning bias voltage of cleaning unit at least, wherein imaging device further comprises:

First conductor that is arranged on the first side wall and is connected with the discharge bias output terminal;

Second conductor that is arranged on the first side wall and is connected with other bias voltage output terminal; And

One shield assembly, dress is inserted between the first side wall place first conductor and second conductor, prevents to have between first conductor and second conductor electric leakage to take place.

25., it is characterized in that image-generating unit comprises according to the described imaging device of claim 18:

Photosensory assembly;

Charhing unit to the photosensory assembly charging;

Make the developing cell of the latent electrostatic image developing that forms on the photosensory assembly; And

With the developer image of carrying on the photosensory assembly transfer printing unit to the recording medium;

Wherein supplying the voltage outlet terminal comprises:

The charging bias voltage is outputed to the charging bias voltage output terminal of charhing unit; And

Another bias voltage output terminal, output will output to the transfer bias of transfer printing unit and one of will output in the development bias voltage of developing cell at least,

Wherein imaging device further comprises:

First conductor that is arranged on the first side wall and is connected with charging bias voltage output terminal;

Second conductor that is arranged on the first side wall and is connected with other bias voltage output terminal; And

One shield assembly, dress is inserted between the first side wall place first conductor and second conductor, prevents to have between first conductor and second conductor electric leakage to take place.

26., it is characterized in that charhing unit comprises lead and grid according to the described imaging device of claim 25,

The bias voltage output terminal that wherein charges comprises discharge bias outputed to discharge bias output terminal on the lead,

The bias voltage conductor that wherein charges comprises the conductor that is connected with the discharge bias output terminal.

27., it is characterized in that when the discharge bias output terminal was connected with first conductor, this shield assembly guided moving of this discharge bias output terminal according to the described imaging device of claim 24.

28., it is characterized in that this high-tension circuit plate is furnished with the charging transformer of a generation discharge bias according to the described imaging device of claim 27,

Wherein this discharge bias output terminal be disposed at this charging transformer above,

Wherein shield assembly is configured in shield assembly and this position of charging transformer sliding contact when the discharge bias output terminal is connected with first conductor.

29., it is characterized in that image-generating unit comprises a photosensory assembly according to the described imaging device of claim 18,

Wherein photosensory assembly is by gear sheet ground connection.

30. according to the described imaging device of claim 18, it is characterized in that, further comprise:

Can uncap, the opening between the first side wall and second sidewall be opened or closure;

Can retreat assembly, advance toward in to the reverse direction of junction at the first side wall, this can retreat assembly driving force is sent to image-generating unit in that this side up, and retreats outward to the reverse direction that discharges the position in the junction, discharges the driving force that is sent to image-generating unit in that this side up; And

Be configured in and can uncap and can retreat arm between the assembly, this arm makes and can retreat assembly along with opening of can uncapping or closure and forward-reverse,

Wherein supply voltage output end and for can retreating assembly, be configured in a side relative with a side that is provided with arm.

31., it is characterized in that the high-tension circuit plate is furnished with the outstanding transformer of past gear sheet according to the described imaging device of claim 18.

32., it is characterized in that it is relative with this gear sheet in the opposite direction that the high-tension circuit plate is configured to its at least a portion according to the described imaging device of claim 31,

Wherein transformer is arranged at this displacing part.

33., it is characterized in that further comprise being disposed at the contact of the first side wall with respect to this side of image-generating unit, this contact is connected in order to bias voltage is added on the image-generating unit according to the described imaging device of claim 18.

34. according to the described imaging device of claim 33, it is characterized in that, further comprise: be configured to and the middle the first side wall coupling assembling relative with the high-tension circuit plate that is inserted with the gear sheet, this coupling assembling is electrically connected the contact with the high-tension circuit plate, avoid the gear sheet simultaneously.

35., it is characterized in that coupling assembling is formed by conducting line segment according to the described imaging device of claim 34.

36. according to the described imaging device of claim 34, it is characterized in that, further comprise:

Can uncap, the opening between the first side wall and second sidewall be opened or closure;

Can retreat assembly, advance toward in to the reverse direction of junction at the first side wall, this can retreat assembly driving force is sent to image-generating unit in that this side up, and retreats outward to the reverse direction that discharges the position in the junction, discharges the driving force that is sent to image-generating unit in that this side up; And

Be configured in and can uncap and can retreat arm between the assembly, this arm makes and can retreat assembly along with opening of can uncapping or closure and forward-reverse,

Wherein arm is configured between the first side wall and the gear sheet.

37. according to the described imaging device of claim 18, it is characterized in that, further comprise:

The low-voltage circuit plate is disposed at second sidewall with respect to this side of image-generating unit, and produces the voltage be lower than the voltage that the high-tension circuit plate produced;

Placing plate is placed by imaging and singly will firstly be formed record images medium paper thereon; And

Earthing contact is electrically connected with the low-voltage circuit plate, and is set to give prominence to from second sidewall, and earthing contact contacts with placing plate.

38. according to the described imaging device of claim 18, it is characterized in that, further comprise:

Placing plate is placed and will be formed record images medium paper thereon by image-generating unit;

Cartridge accommodates placing plate in the middle of it, and is installed between the first side wall and second sidewall can shirk mode;

Locking mechanism is arranged at second sidewall, and shirking of cartridge controlled; And

Second gear is arranged at the first side wall, and placing plate is shifted to the transfer position of conveying recording medium from the placement location of placing recording medium,

Wherein second gear rotates on a direction, be driven at the installation direction of this direction cartridge along cartridge,

Cartridge is controlled cartridge by working in coordination with of the locking mechanism and second gear and is shirked between the first side wall and second sidewall in the tool.

39. an imaging device is characterized in that, comprising:

Be configured to toward each other, it has the first side wall and second sidewall of a predetermined space between the two;

Be configured in the image-generating unit that on recording medium, forms image between the first side wall and second sidewall;

Drive source is disposed at the first side wall with respect to this side of image-generating unit, and produces the driving force that is used for image-generating unit;

Transmit first gear of driving force to image-generating unit from drive source;

The gear sheet is disposed at this side of the first side wall for image-generating unit, and supports first gear;

The high-tension circuit plate, generation will be added to the bias voltage on the image-generating unit, be configured in the first side wall with respect to this side of image-generating unit, relative with the gear sheet, this high-tension circuit plate has displacing part, and this displacing part moves apart the gear sheet on the reverse direction of the first side wall and second sidewall; And

Output bias also is arranged at supply voltage output end on the high-tension circuit plate at displacing part.

40., it is characterized in that this supply voltage output end is disposed at an ora terminalis of the displacing part of high-tension circuit plate according to the described imaging device of claim 39.

41. according to the described imaging device of claim 39, it is characterized in that, further comprise the insulating trip that covers gear sheet overlapping part, the overlapping in the opposite direction high-tension circuit plate of this overlapping part.

42., it is characterized in that image-generating unit comprises according to the described imaging device of claim 39:

Carry the photosensory assembly of developer image;

The charhing unit that has lead and photosensory assembly is charged; And

With the developer image of carrying on the photosensory assembly transfer printing unit to the recording medium,

Wherein this supply voltage output end comprises:

Discharge bias is outputed to discharge bias output terminal on the lead; And

Transfer bias is outputed to the transfer bias output terminal of transfer printing unit,

Wherein this discharge bias output terminal is not last with the distance that this transfer bias output terminal is configured in the generation of leaking electricity between the two.

43., it is characterized in that image-generating unit comprises according to the described imaging device of claim 39:

Photosensory assembly;

The charhing unit that has lead and grid and photosensory assembly is charged;

Make the developing cell of the latent electrostatic image developing that forms on the photosensory assembly;

With the developer image of carrying on the photosensory assembly transfer printing unit to the recording medium; And

The cleaning unit of clean feel optical assembly,

Wherein supplying voltage output end comprises:

Discharge bias is outputed to discharge bias output terminal on the lead;

Transfer bias is outputed to the transfer bias output terminal of transfer printing unit; And

The 3rd bias voltage output terminal, output will output to grid bias voltage on the grid, will output to the development bias voltage of developing cell and one of will output in the cleaning bias voltage of cleaning unit at least,

The distance between discharge bias output terminal and the transfer bias output terminal wherein one of is set in the distance of being longer than between discharge bias output terminal and the 3rd bias voltage output terminal and the distance between transfer bias output terminal and the 3rd bias voltage output terminal at least.

44., it is characterized in that image-generating unit comprises according to the described imaging device of claim 39:

Photosensory assembly;

Charhing unit to the photosensory assembly charging;

Make the developing cell of the latent electrostatic image developing that forms on the photosensory assembly; And

With the developer image of carrying on the photosensory assembly transfer printing unit to the recording medium,

Wherein supplying voltage output end comprises:

The charging bias voltage is outputed to charging bias voltage output terminal on the charhing unit;

Transfer bias is outputed to the transfer bias output terminal of transfer printing unit; And

The development bias voltage is outputed to the development bias voltage output terminal of developing cell,

Wherein charge distance between bias voltage output terminal and the transfer bias output terminal one of is set in the distance of being longer than between charging bias voltage output terminal and the development output terminal and the distance between transfer bias output terminal and the development bias voltage output terminal at least.

45., it is characterized in that image-generating unit comprises according to the described imaging device of claim 39:

Photosensory assembly;

The charhing unit that has lead and grid and photosensory assembly is charged;

Make the developing cell of the latent electrostatic image developing that forms on the photosensory assembly;

With the developer image of carrying on the photosensory assembly transfer printing unit to the recording medium; And

The cleaning unit of clean feel optical assembly,

Wherein supplying voltage output end comprises:

Discharge bias is outputed to discharge bias output terminal on the lead;

Another bias voltage output terminal, output to output to transfer printing unit transfer bias, to output to grid bias voltage on the grid, will output to the development bias voltage of developing cell and one of will output in the cleaning bias voltage of cleaning unit at least, wherein imaging device further comprises:

First conductor that is arranged at the first side wall and is connected with the discharge bias output terminal;

Second conductor that is arranged at the first side wall and is connected with other bias voltage output terminal; And

One shield assembly, dress is inserted between the first side wall place first conductor and second conductor, prevents to have between first conductor and second conductor electric leakage to take place.

46., it is characterized in that image-generating unit comprises according to the described imaging device of claim 39:

Photosensory assembly:

Charhing unit to the photosensory assembly charging;

Make the developing cell of the latent electrostatic image developing that forms on the photosensory assembly; And

With the developer image of carrying on the photosensory assembly transfer printing unit to the recording medium;

Wherein supplying voltage output end comprises:

The charging bias voltage is outputed to the charging bias voltage output terminal of charhing unit;

Another bias voltage output terminal, output will output to the transfer bias of transfer printing unit and one of will output in the development bias voltage of developing cell at least,

Wherein imaging device further comprises:

First conductor that is arranged at the first side wall and is connected with charging bias voltage output terminal;

Second conductor that is arranged at the first side wall and is connected with other bias voltage output terminal; And

One shield assembly, dress is inserted between the first side wall place first conductor and second conductor, prevents to have between first conductor and second conductor electric leakage to take place.

47., it is characterized in that charhing unit comprises lead and grid according to the described imaging device of claim 46,

The bias voltage output terminal that wherein charges comprises discharge bias outputed to discharge bias output terminal on the lead,

The bias voltage conductor that wherein charges comprises the conductor that is connected with the discharge bias output terminal.

48., it is characterized in that when the discharge bias output terminal was connected with first conductor, shield assembly guided moving of discharge bias output terminal according to the described imaging device of claim 45.

49., it is characterized in that this high-tension circuit plate is furnished with the charging transformer that produces discharge bias according to the described imaging device of claim 48,

Wherein the discharge bias output terminal be disposed at charging transformer above,

Wherein shield assembly is configured in shield assembly and this position of charging transformer sliding contact when the discharge bias output terminal is connected with first conductor.

50. according to the described imaging device of claim 39, it is characterized in that image-generating unit comprises photosensory assembly,

Wherein photosensory assembly is by gear sheet ground connection.

51. according to the described imaging device of claim 39, it is characterized in that, further comprise:

Can uncap, the opening between the first side wall and second sidewall be opened or closure;

Can retreat assembly, advance toward in to the reverse direction of junction at the first side wall, this can retreat assembly driving force is sent to image-generating unit in that this side up, and retreats outward to the reverse direction that discharges the position in the junction, discharges the driving force that is sent to image-generating unit in that this side up; And

Be configured in and can uncap and can retreat arm between the assembly, this arm makes and can retreat assembly along with opening of can uncapping or closure and forward-reverse,

Wherein supply voltage output end with respect to retreating arrangement of components in a side relative with a side that is provided with arm.

52., it is characterized in that the high-tension circuit plate is furnished with the outstanding transformer of past gear sheet according to the described imaging device of claim 39.

53., it is characterized in that the high-tension circuit plate is configured to that its part is relative with this gear sheet in the opposite direction at least according to the described imaging device of claim 52,

Wherein transformer is arranged at this displacing part.

54., it is characterized in that further comprise being disposed at the contact of the first side wall with respect to this side of image-generating unit, this contact is connected in order to bias voltage is added on the image-generating unit according to the described imaging device of claim 39.

55. according to the described imaging device of claim 54, it is characterized in that, further comprise: be configured to and the middle the first side wall coupling assembling relative with the high-tension circuit plate that is inserted with the gear sheet, this coupling assembling is electrically connected the contact with the high-tension circuit plate, avoid the gear sheet simultaneously.

56., it is characterized in that coupling assembling is formed by conducting line segment according to the described imaging device of claim 55.

57. according to the described imaging device of claim 55, it is characterized in that, further comprise:

Can uncap, the opening between the first side wall and second sidewall be opened or closure;

Can retreat assembly, advance toward in to the reverse direction of junction at the first side wall, this can retreat assembly driving force is sent to image-generating unit in that this side up, and retreats outward to the reverse direction that discharges the position in the junction, discharges the driving force that is sent to image-generating unit in that this side up; And

Be configured in and can uncap and can retreat arm between the assembly, this arm makes and can retreat assembly along with opening of can uncapping or closure and forward-reverse,

Wherein arm is configured between the first side wall and the gear sheet.

58. according to the described imaging device of claim 39, it is characterized in that, further comprise:

The low-voltage circuit plate is disposed at second sidewall with respect to this side of image-generating unit, and produces the voltage be lower than the voltage that the high-tension circuit plate produced;

Placing plate is placed and will be formed record images medium paper thereon by image-generating unit; And

Earthing contact is electrically connected with the low-voltage circuit plate, and is set to give prominence to from second sidewall, and earthing contact contacts with placing plate.

59. according to the described imaging device of claim 39, it is characterized in that, further comprise:

Placing plate is placed and will be formed record images medium paper thereon by image-generating unit;

Cartridge wherein accommodates placing plate, and is installed between the first side wall and second sidewall can shirk mode;

Locking mechanism is arranged at second sidewall, and shirking of cartridge controlled; And

Second gear is arranged at the first side wall, and placing plate is shifted to the transfer position of conveying recording medium from the placement location of placing recording medium,

Wherein second gear rotates on a direction, be driven at the installation direction of this direction cartridge along cartridge,

Wherein cartridge is controlled cartridge by working in coordination with of the locking mechanism and second gear and is shirked between the first side wall and second sidewall.

Images