CN108227433A - Imaging device and drum unit - Google Patents
Imaging device and drum unit Download PDFInfo
- Publication number
- CN108227433A CN108227433A CN201711347190.4A CN201711347190A CN108227433A CN 108227433 A CN108227433 A CN 108227433A CN 201711347190 A CN201711347190 A CN 201711347190A CN 108227433 A CN108227433 A CN 108227433A
- Authority
- CN
- China
- Prior art keywords
- photosensitive drums
- imaging device
- contact surface
- flange
- bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
- G03G15/043—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for controlling illumination or exposure
- G03G15/0435—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for controlling illumination or exposure by introducing an optical element in the optical path, e.g. a filter
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
- G03G21/1661—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements means for handling parts of the apparatus in the apparatus
- G03G21/1666—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements means for handling parts of the apparatus in the apparatus for the exposure unit
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
- G03G21/1661—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements means for handling parts of the apparatus in the apparatus
- G03G21/1671—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements means for handling parts of the apparatus in the apparatus for the photosensitive element
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
- Electrophotography Configuration And Component (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
- Discharging, Photosensitive Material Shape In Electrophotography (AREA)
Abstract
Imaging device and drum unit are provided, imaging device has photosensitive drum component, photohead and bearing.Photosensitive drum component includes photosensitive drums and is arranged on the flange of the at one end on the axial direction of the axis of photosensitive drums of photosensitive drums.The inner surface of Hp contacts photosensitive drums.Photohead includes：The multiple optical transmitting sets being aligned along the axial direction of photosensitive drums；Light from optical transmitting set is focused on to the lens array in photosensitive drums；With support optical transmitting set and the head frame of lens array.Bearing has the first contact surface, for contact exposure head, to be limited to the distance in the direction between lens array and photosensitive drums along the optical axis of light.
Description
Technical field
This disclosure relates to a kind of drum unit with photosensitive drums and a kind of imaging device with the drum unit, the photosensitive drums
The light from the optical transmitting set being installed in photohead can be exposed to.
Background technology
A kind of imaging device is disclosed in such as Japanese Patent Provisional Publication special open 2002-361931, the imaging device
The LED heads of light and the interval being disposed between the surface of photosensitive drums and LED are exposed to photosensitive drums, by photosensitive drums
Device.According to the announcement, LED are arranged to contact interval device, so as to be maintained in the LED gaps between photosensitive drums
It is correctly measuring, and the focus for being used for LED can be maintained at the proper position in photosensitive drums.
Invention content
Meanwhile the toner on the surface of barrier such as photosensitive drums is possibly between spacer and photosensitive drums
Gap or the gap between spacer and LED, and focus may be caused to deviate from correct position.
The disclosure is advantageous in that provides a kind of drum unit and a kind of imaging device, wherein the focus for photohead
Deviation can be suppressed.
According to the disclosure, a kind of imaging device is provided, the imaging device includes photosensitive drum component, photohead and bearing.
The photosensitive drum component includes：Photosensitive drums；And flange, the flange are arranged on the axis in the photosensitive drums of the photosensitive drums
At one end on the axial direction of line, the inner surface of photosensitive drums described in the Hp contacts.The photohead includes：Multiple light hairs
Emitter, the multiple optical transmitting set are aligned along the axial direction；Lens array, the lens array will come from the light and send out
The light of emitter is focused in the photosensitive drums；With head frame, the head frame supports the optical transmitting set and the lens array.
The bearing includes the first contact surface, and first contact surface contacts with the photohead, be limited to the lens array with
Along the distance in the direction of the optical axis of the light between the photosensitive drums.
Optionally, the flange can include inside and outside, and the inside is disposed in the end face of the photosensitive drums
On inside for the axial direction, the outside is disposed in the just axial direction side of the end face of the photosensitive drums
On outside for.The bearing can contact the peripheral surface of the outside.
Optionally, the outside can include canister portion, at cartridge, flange described in the bearings.The cylinder
The outer diameter in portion can be different from the outer diameter of the photosensitive drums.
Optionally, the outer diameter of cartridge can be less than the outer diameter of the photosensitive drums.
Optionally, the outside can include round flange portion, and the outer diameter in the round flange portion is more than the photosensitive drums
The outer diameter.The round flange portion can be arranged to the end face for contacting the photosensitive drums.
Optionally, the inside can be disposed in for the axial direction exposes model for the photohead
The outside enclosed.
Optionally, first contact surface can be located at the radial direction side with regard to the photosensitive drums of the outer surface of the photosensitive drums
On outside for.
Optionally, the bearing can include：Supporting part, the supporting part have cylindrical form；And extension, it is described to prolong
Extending portion has plate-like shape.The extension can in the radial direction extend outwardly from the supporting part described.
Optionally, the photohead can include the second contact surface, and second contact surface is configured to contact described the
One contact surface.A contact surface in first contact surface and second contact surface can be the face of sphering, and described
Another contact surface in first contact surface and second contact surface can be flat face.
Optionally, first contact surface can be the flat face being orthogonally unfolded with the optical axis direction.
Optionally, the flange and the bearing can be formed from a resin.The bearing can be sleeve bearing.
Optionally, the bearing can include cantilever, and the cantilever is configured to the flange towards the photosensitive drums
Side in radial directions squeeze.
Optionally, it is observed along the axial direction, the cantilever can be located at the axis of the photosensitive drums just
It extends through on the straight line of first contact surface with handing over.
Optionally, the imaging device may further include the metal shaft being electrically connected with the photosensitive drums.The metal
Axis can be disposed at the rotation center of the flange.
Optionally, the flange can include connector, and rotary driving force is input to the connector.
It is alternatively possible to it is arranged in the end regions of each on side and opposite side of the photosensitive drums described convex
Edge.The axis can be arranged on the end regions of each on the side and the opposite side of the photosensitive drums
It holds.The imaging device can include drum frame, and the drum frame is configured on the side and is propped up on the opposite side
Support the bearing.
In addition, according to the disclosure, a kind of drum unit is provided, the drum unit has the photosensitive drum component and the axis
It holds.
Description of the drawings
Fig. 1 is the illustration sectional view of color printer according to an embodiment of the present disclosure.
Fig. 2 is the illustration sectional view of color printer according to an embodiment of the present disclosure (wherein head cover opening).
Fig. 3 is the exemplary view of the photohead at retracted position and drum unit according to an embodiment of the present disclosure.
Fig. 4 be it is according to an embodiment of the present disclosure can be at exposure position photohead and drum unit exemplary view.
Fig. 5 is the decomposition view of the gap adjustment component according to an embodiment of the present disclosure for drum unit.
Fig. 6 is the sectional view of the resin spring for drum unit and neighbouring part according to an embodiment of the present disclosure.
Fig. 7 is the perspective view of the bearing in drum unit according to an embodiment of the present disclosure.
Fig. 8 is shown in the position relationship between the bearing and drum frame in drum unit according to an embodiment of the present disclosure.
Fig. 9 A- Fig. 9 C signals determine the preferred number of the sheet spacer for drum unit according to an embodiment of the present disclosure
The required dimension information of amount.
Specific embodiment
Hereinafter, embodiment of the disclosure will be described with reference to the drawings.To color printer 1 be described in the following paragraphs
Total structure and detailed configuration, the color printer 1 are an examples of imaging device.
In the following description, by based on user normally with the position of color printer 1 refer to color printer 1 and
Each part included in color printer 1 or the relevant direction of product.For example, in Fig. 1, the left-hand side of observer and
Front side and the rear side that right-hand side will be known respectively as user.For using the user of color printer 1, observe in Fig. 1
The relatively nearside of person and it will be known respectively as right side and left side compared with distal side.From top to bottom or from top to bottom direction in Fig. 1 can be by
Referred to as vertical direction, and direction can be referred to as front-rear direction from front to back or from back to front.In addition, from left to right or from the right side
It can be referred to as width direction to left direction.
As shown in FIG. 1, color printer 1 includes main casing 10, head cover 11, sheet feeder 20 and imaging unit
30.Sheet feeder 20 and imaging unit 30 are accommodated in main casing 10.
Head cover 11 is disposed in relative to main casing 10 at upper position.Head cover 11 can be around the pivot axis at rear side
11A is pivoted relative to main casing 10, to open or close the opening 10A formed at the upper region in main casing 10.Head cover
11 can close the closed position (see Fig. 1) of opening 10A and the open position of the opening opening of head cover 11 10A (see figure in head cover 11
2) it is moved between.
Sheet feeder 20 is disposed at the lower position in main casing 10.Sheet feeder 20 includes storing sheet material
The feeder pallet 21 of P and the feeder device 22 for sheet material P to be fed to imaging unit 30.Piece in feeder pallet 21
Material P can be fed device device 22 and be separated from each other and be fed to imaging unit 30.
Imaging unit 30 includes：Multiple such as four (4) photoheads 40；Multiple such as four (4) handle box PC；Turn
Impression member 70；With determine unit 80.In the following description, two or more identical products can be by one of which system
Product represent, and can be omitted the explanation of other same articles.For example, the explanation of four photoheads 40 can be by an exposure
Shaven head 40 represents, and can be omitted the explanation of other three (3) photoheads 40.
Each photohead 40 includes multiple LED at one end, and (more specifically will by head cover 11 at the other end
The retainer 12 being described in detail afterwards) it keeps, to hang down from head cover 11.Photohead 40 is arranged to when head cover 11 is in close stance
Photosensitive drums 51A when putting from top in four (4) photosensitive drums 51A.Particularly, photohead 40 can be in company with top
Lid 11 can move between exposure position (see Fig. 1) and retracted position (see Fig. 2) together, can be in exposure position at this, photosensitive drums
51A can be exposed to the light from photohead 40, in this retracted position in, photohead 40 from photosensitive drums 51A separate than exists
Photohead 40 that can be in exposure position separates far from photosensitive drums 51A.LED in photohead 40 can be based on image data and select
Property flicker, so as to which the surface of photosensitive drums 51A can be exposed to the light from LED.The detailed configuration of photohead 40 will with
After describe.
Handle box PC is disposed between head cover 11 and feeder pallet 21, to be aligned along front-rear direction.When head cover 11
When in open position (see Fig. 2), each handle box PC can be attached to main casing 10 by the 10A that is open and from main casing 10
Dismounting.Handle box PC includes drum unit 50 and Delevoping cartridge 60, which can be attached to drum unit 50 and from drum unit 50
Dismounting.
Drum unit 50 includes：Photosensitive drum component 51, the photosensitive drum component 51 include the photosensitive drums 51A with cylindrical form；
For the charger 52 to charge to photosensitive drums 51A；For pushing the expansible spring 53 of Delevoping cartridge 60 towards photosensitive drums 51A；Clearly
Clean roller 54；With drum frame 55, which is used to support photosensitive drum component 51 and other parts.Photosensitive drum component 51 it is detailed
Construction will be described later.
Clearer 54 is the roller for removing barrier (such as residual toner) from photosensitive drums 51A.Clearer 54 contacts
Photosensitive drums 51A, and can be rotated on photosensitive drums 51A.
Delevoping cartridge 60 include to contain toner toner container 61 and for by toner from toner container 61
It is supplied to the developer roll 62 of photosensitive drums 51A.Developer roll 62 being capable of moving in the radial direction in photosensitive drums 51A.
Particularly, developer roll 62 can be rotated when expansible spring 53 pushes developer roll 62 against photosensitive drums 51A.In quilt
While expansible spring 53 pushes, developer roll 62 can moving in the radial direction in photosensitive drums 51A, to follow developer roll 62
With the eccentric movement of photosensitive drums 51A.Therefore, the pushing force of expansible spring 53 can be acted in photosensitive drums 51A and developer roll
To absorb bias in intermediate region between 62, and the electrostatic that toner can be steadily supplied on photosensitive drums 51A is dived
Picture.
Transfer unit 70 is disposed between feeder pallet 21 and handle box PC.Transfer unit 70 includes：Driven roller 71；
Driven voller 72；Conveyor belt 73, the conveyor belt 73 are the endless straps around driven roller 71 and the tension of driven voller 72；With four
A (4) transfer roll 74.Conveyor belt 73 is described to be arranged such that in following arrangement：The outer surface contact of conveyor belt 73
Photosensitive drums 51A, and transfer roll 74 is disposed on the inside of conveyor belt 73, to clamp conveying together with photosensitive drums 51A
Device belt 73.
Determine unit 80 to be disposed at handle box PC and transfer unit 70 position backward.Determine unit 80 to include adding
Hot-rolling 81 and pressure roll 81, the pressure roll 81 are arranged in face of the heating roller 81.Pressure roll 82 is squeezed against heating roller 81.
In the imaging unit 30 being configured as above, the surface of photosensitive drums 51A can equably be electrically charged the charging of device 52 and quilt
The light from photohead 40 is selectively exposed to, is dived so as to form electrostatic based on view data on photosensitive drums 51A
Picture.Hereafter, toner can be supplied to photosensitive drums 51A from developer roll 62, so as to electrostatic latent image can on photosensitive drums 51A quilt
Develop to visual toner image.
The toner image formed on photosensitive drums 51A can be transferred roller 74 and hierarchically successively be transferred in conveyer
On the sheet material P conveyed on belt 73.The sheet material P of toner image with transfer can be pumped through in heating roller 81 and pressure
Position between power roller 82, so as to which toner image can be heat-fixed on sheet material P.Sheet material P can be discharged by conveying roller 91
To the outside of main casing 10 and it is placed on the discharge tray 11B formed on the top of head cover 11.
Then, the structure of the structure neighbouring with the photosensitive drum component 51 including photosensitive drums 51A explained below and photohead 40
It makes.Photosensitive drums 51A as shown in Figure 3 can be rotated around rotation axis X1 extended in the direction of the width.In following explanation
In, direction, that is, width direction of the rotation axis X1 for photosensitive drums 51A can be referred to as rotation axis direction.
Photosensitive drum component 51 its for rotation axis direction end and another end rotatably by
Bearing 500 supports.In photosensitive drum component 51 at the axial end regions on side and opposite side along rotation axis direction
It arranges these bearings 500, and these bearings 500 is supported by drum frame 55.
Photosensitive drum component 51 includes the photosensitive drums 51A of shape cylindrical in shape and is mounted to the inner peripheral surface of photosensitive drums 51A
Two (2) flanges 400.Photosensitive drums 51A can be made of conductive material such as metal.In the peripheral surface of photosensitive drums 51A,
Form photosensitive layer.The peripheral surface including photosensitive layer of photosensitive drums 51A can be referred to as the surface of photosensitive drums 51A.At least exist
Than forming photosensitive layer in the range that can be big exposure range ER of photohead 40.
One and another flange 400 be respectively disposed in photosensitive drums 51A in one for rotation axis direction
In end regions on side and opposite side.Flange 400 is formed from a resin.Flange 400 is mounted to the inner peripheral surface of photosensitive drums 51A,
And flange 400 can be rotated with photosensitive drum 51A.Each flange 400 includes the inside 410 that is integrally formed and outer
Portion 420.The inside 410 is disposed on the inside for rotation axis direction of the end face A1 of photosensitive drums 51A.Outside this
420 are disposed on the outside for rotation axis direction of the end face A1 of photosensitive drums 51A.
Inside 410 is formed with generally cylindrical shape.Inside 410 is mounted to the inner peripheral surface of photosensitive drums 51A, and internal
410 be disposed in photohead 40 can exposure range ER the outside for rotation axis direction.
Outside 420 includes the diameter of the canister portion 421 that is supported by bearing 500 and peripheral surface from canister portion 421 in photosensitive drums 51A
The outwardly projecting round flange portion 422 on direction.Canister portion 421 is formed with generally cylindrical shape.The outer diameter of canister portion 421 is less than photosensitive
The outer diameter of drum 51A.
Round flange portion 422 is formed with substantially disc-shape.Round flange portion 422 is disposed in along rotation axis direction
Between canister portion 421 and inside 410.Round flange portion 422 is arranged to the end face A1 of contact photosensitive drums 51A.Round flange portion 422
Outer diameter be more than photosensitive drums 51A outer diameter.
Flange 400 has the through-hole 401 for flange 400 being passed through to be formed along rotation axis direction.Particularly, in inside 410
Inner face and outside 420 outer end face between, along rotation axis direction pass through flange 400 formed the through-hole 401.In inside
The through-hole 401 is formed at 410 center and the center of outside 420.
A flange 400 (such as the flange 400 on the left side) in described two flanges 400 can have drum connector 402,
Rotary driving force can be input to the drum connector 402.Drum connector 402 is formed：It is observed along rotation axis direction,
It is recessed inwardly with non-circular shape along rotation axis direction.The external connecting device that can extend and retract from main casing 10 (does not show
Go out) it can extend from main casing 10 and be assembled in bulging connector 402.Drum connector 402 and the external connecting device can be along
The direction of rotation of photosensitive drums 51A is engaged with each other, so as to which rotary driving force can be bulging to be input by the transmission of external connecting device
Connect device 402.
In another flange 400 (such as the flange 400 on the right) in described two flanges 400, it is made of metal
Axis 610 can be disposed in through-hole 401.The axis 610 is disposed at the rotation center of flange 400.Axis 610 in rotary shaft
Length on line direction is less than the length on rotation axis direction of photosensitive drums 51A.Meanwhile axis 610 in rotation axis side
Upward length is more than the length on rotation axis direction of flange 400.The axial end of axis 610 is from flange 400 along rotation
The inner face and outer end face in shaft axis direction protrude outward.
On an interior axial end in those axial ends along rotation axis direction of axis 610, arrange by made of metal
Into ground spring 620.The ground spring 620 is arranged to the peripheral surface of engagement shaft 610 and the interior weekly form of photosensitive drums 51A
Face.Therefore, axis 610 is electrically connected by ground spring 620 with photosensitive drums 51A, also, when photosensitive drum component 51 is attached to main casing
During body 10, be connected to be connected to ground potential with the metal parts being disposed in main casing 10.
Each bearing 500 is pivotably supported the peripheral surface of the canister portion 421 in flange 400.Bearing 500 is by resin system
Into, and bearing 500 includes sleeve bearing.Bearing 500 is disposed in the outside along rotation axis direction of photosensitive drums 51A
On.
Bearing 500 includes the first contact surface 531, which can be with contact exposure head 40.First contact surface
531 on the outside for radial direction on the surface of photosensitive drums 51A.Particularly, the first contact surface 531 is radially
It is prominent, near from photohead 40 from peripheral surface of the photohead 40 than the round flange portion 422 in flange 400.The structure of bearing 500
Make to describe in detail afterwards.
Photohead 40 includes a reality as the head frame for being used to support optical component and optical transmitting set described below
The first frame 100 and the second frame 200 that example is assembled together.Photohead 40 further comprises being disposed in the second frame
Gap adjustment component 300 between 200 and drum unit 50.Particularly, each gap adjustment component 300 is disposed in the second frame
Between bearing 500 in frame 200 and drum unit 50.
First frame 100 and the second frame 200 are formed from a resin.First frame 100 includes the base portion 110 being integrally formed
With two (2) extensions 120.Base portion 110 is formed from a resin, and base portion 110 shows square longer in the direction of the width greatly
Shape shape extends.Extension 120 extends outwardly in the direction of the width from the width direction end face of base portion 110.Base portion 110 is by resin
It is made, and base portion 110 is vertically opened.
In the inside of base portion 110, the memory 103 of arrangement LED array 101 and storage about the information of the position of focus.
In the lower opening of base portion 110, lens array 102 is arranged, the light from LED array 101 can pass through 102 quilt of lens array
It focuses on the surface of photosensitive drums 51A.In other words, base portion 110 supports LED array 101, lens array 102 and memory 103.
It is a following face below lens array 102, by the surface launching light, and the face is towards rotation axis X1.
LED array 101 is the semiconductor dress for the multiple optical transmitting set (not shown)s for including being aligned along rotation axis direction
It puts.Optical transmitting set can emit light at photosensitive drums 51A, to scan the surface of photosensitive drums 51A.In the following description, it is described more
A optical transmitting set can be referred to as main scanning direction along alignment with the direction along rotation axis scanning direction photosensitive drums 51A.
Meanwhile the direction of the optical axis of light emitted from LED array 101 can be referred to as optical axis direction.The optical axis direction is with extending through
Any one optical transmitting set is consistent with the direction of the position of the focus for one optical transmitting set on photosensitive drums 51A.
Sub-scanning direction can be referred to as by being orthogonal to optical axis direction and being orthogonal to the direction of main scanning direction.In this respect, subscan side
To can be consistent with front-rear direction in the present embodiment, and optical axis direction can be consistent with vertical direction.
The size in the vertical direction of each extension 120 is less than the size in the vertical direction of base portion 110.Prolong
Extending portion 120 is located at the upper position on the width direction end face of base portion 110.It is formed below extension 120 and is supported face 121,
First frame 100 is supported at face 121 and is supported by the second frame 200 at this.Face 121 is supported towards rotation axis X1.
Second frame 200 supports the first frame 100, and the second frame 200 is formed from a resin.Second frame 200 from by
Resin is made and is hung down by the retainer 12 that head cover 11 swingably supports, to be supported by retainer 12.Second frame 200 has
Have：The big base portion 210 for showing rectangular shape extension longer in the direction of the width；With the first frame 100 of support with regard to rotary shaft
Two (2) protruding portions 220 of end regions for line direction.
Base portion 210 includes the first recess portion 211, the second recess portion 212 and hole 213.Hole 213 is included in the edge about base portion 210
Two (2) holes 213 that the width midway of width direction is symmetrically formed at spaced positions from each other.It wears in the longitudinal direction
It crosses base portion 210 and forms hole 213.
Meanwhile retainer 12 includes the hook 12A that will be hooked with base portion 210 at the position consistent with hole 213.Each hook
The lower end of 12A protrudes inwardly to engage with hole 213 for front-rear direction.
First recess portion 211 is opened towards retainer 12.First recess portion 211 include two (2) first recess portions 211, one
First recess portion 211 and another first recess portion 211 are respectively formed on the outside of one for width direction in hole 213 and another
At position on one outside.In position between the bottom of each the first recess portion 211 and retainer 12, arrangement can court
The compression helical spring SP of photohead 40 is pushed to photosensitive drums 51A.
Second recess portion 212 is opened towards side in the longitudinal direction.It is recessed that second recess portion 212 includes two (2) second
Portion 212, second recess portion 212 and another second recess portion 212 be respectively formed in the first recess portion 211 with regard to width direction and
At position on the outside and another outside of speech.One second recess portion 211 and another described second recess portion 211
Width direction center than base portion 210 is respectively formed in closer to a width direction end of base portion 210 and another width
At the position at direction end.The lower wall for forming the bottom of each the second recess portion 212 is used as supporting walls 214 with supporting gap adjustment portion
Part 300.
The second supporting surface F2 is formed below supporting walls 214, it, should when photohead 40 is when can be in exposure position (see Fig. 4)
Second supporting surface F2 can be with gap adjustment component 300 supported from above.Second supporting surface F2 is located at will be from rotation axis X1 ratios
The first supporting surface F1 being described in detail later from rotation axis X1 far from.Second supporting surface F2 may be used as datum level
FB, based on datum level FB, it may be determined that the thickness of sheet spacer 320.Datum level FB is arranged under supporting walls 214
It on side or is arranged on the downside of base portion 210, so as to towards photosensitive drums 51A or towards rotation axis X1.
Protruding portion 220 protrudes below base portion 210 towards photosensitive drum component 51.Particularly, protruding portion 220 is downwardly projected
More than lens array 102, with nearer from photosensitive drums 51A than lens array 102 from photosensitive drums 51A for optical axis direction.Each
Protruding portion 220 is disposed in for width direction at the position between compression helical spring SP and gap adjustment component 300.
Each protruding portion 220 includes 223 and the 4th recess portion of third recess portion opened towards side in the longitudinal direction
224.Particularly, 223 and the 4th recess portion 224 of third recess portion can be opened backward.Third recess portion 223 is formed on protruding portion 220
In upper position at, and third recess portion 223 can accommodate the extension 120 in the first frame 100.Under third recess portion 223
Wall forms supporting walls 221, to support the extension 120 of the first frame 100.The first supporting surface F1 is formed above supporting walls 221,
To support the extension 120 of the first frame 100 from below.First supporting surface F1 for the radial direction of photosensitive drums 51A towards
Outside.In this respect, in the first frame 100 towards on the side of photosensitive drums 51A, the first supporting surface F1 supports the first frame 100.
First supporting surface F1 is disposed in along optical axis direction between photosensitive drums 51A and the first frame 100.
A part for protruding portion 220 is located at position consistent with the first supporting surface F1 for rotation axis direction.It changes
Yan Zhi, the end face 225 (see Fig. 6) towards photosensitive drums 51A of protruding portion 220 are orthogonally unfolded, and with optical axis direction along optical axis
Direction observation is Chong Die with the first supporting surface F1.
4th recess portion 224 is formed in lower opening position relative to third recess portion 223.It is used to support prolonging for the first frame 100
The supporting surface 221 of extending portion 120 is located between 223 and the 4th recess portion 224 of third recess portion.As shown in FIG. 6, it is supported on support
The extension 120 of the first frame 100 on face 221 can be fixed to protruding portion 220 by resin spring 700.Resin spring
700 can be attached to extension 120 and protruding portion 220 from rear, so as to prevent resin spring 700 from easily being touched by user
It touches or removes.
The extension 120 of first frame 100 can be pressed against the first supporting surface F1 and third recess portion by resin spring 700
Vertical plane 223A in 223.Resin spring 700 includes the first part 710 being integrally formed, second part 720, Part III
730th, Part IV 740, Part V 750, Part VI 760, Part VII 770 and Part VIII 780.
The 4th recess portion is stayed in one end on the side for front-rear direction such as rear side of first part 710
While 224 outside, first part 710 is disposed in the 4th recess portion 224 to contact below supporting walls 221.Second
720 are divided to be upwardly extended from the rear end of first part 710.It is recessed that Part III 730 from the upper end of second part 720 is forwardly toward third
The vertical plane 223A extensions in portion 223.Part IV 740 from the one end on opposite side such as front side of Part III 730 for example
Front end obliquely extends relative to Part III 730, with for example rearward closer to second part 720 and first part 710.
Part V 750 for example descends rear end obliquely to extend relative to Part III 730 from one end of Part IV 740, with for example to
On backward closer to Part III 730 and second part 720.Part VI 760 from Part IV 740 with regard to front-rear direction and
One end such as rear end on the side of speech is extended parallel to Part III 730, with for example backward closer to second part
720.Part VII 770 is from one end such as rear end on the side such as rear side of Part VI 760 relative to third portion
730 are divided obliquely to extend, with for example rearward closer to second part 720 and first part 710.Part VIII 780 is from
One end such as lower end of seven parts 770 extends downwardly.Part VII 770 is arranged to the extension 120 of the first frame 100 of contact
Edge, extension 120 is pressed against to the vertical plane 223A of the first supporting surface F1 and third recess portion 223.
As shown in FIG. 6, the size in the longitudinal direction of protruding portion 220 be more than lens array 102 in front and back
Upward size.In other words, lens array 102 is disposed in for front-rear direction in the range of protruding portion 220.
Meanwhile as shown in FIG. 5, each gap adjustment component 300 includes contact component 310 and such as two multiple
(2) sheet spacer 320.Contact component 310 can be with the first contact surface 531 (see Fig. 3) in contact bearing 500, with limit
It is scheduled on distance in the direction of the optical axis between lens array 102 and photosensitive drums 51A.
Contact component 310 is formed from a resin.Contact component 310 includes solid spacer 310A and protrusion 310B, this is solid
Spacer 310A is general triangular block along the observation of rotation axis direction, and protrusion 310B is integrally from solid spacer 310A
It projects upwards.Solid spacer 310A is tapered with towards 51 smaller of photosensitive drum component in the longitudinal direction, that is, in photosensitive drum component
Under being directed toward at 51.In other words, the size in the longitudinal direction of solid spacer 310A is reduced with towards photosensitive drum component 51
Smaller.
Solid spacer 310A includes the first wall 311, the second wall 312 and third wall 313.First wall 311 includes opposed faces
F3, opposed faces F3 are along optical axis direction towards the second supporting surface F2, that is, datum level FB of the second frame 200.Second wall 312 from
One end on the side for front-rear direction of first wall 311 is diagonally downward and towards opposite side for front-rear direction
Extension.Third wall 313 is from the other end on the opposite side for front-rear direction of the first wall 311 diagonally downward and towards just
Side extension for front-rear direction, is connect with the lower end with the second wall 312 at the lower end of third wall 313.Solid
Every the lower end of device 310A (at the lower end of solid spacer 310A, the lower end of the second wall 312 is connect with the lower end of third wall 313)
The second contact surface F4 is formed, second contact surface F4 is to be downwardly projected and the end of sphering extended in the direction of the width.Second connects
Contacting surface F4 can be moved together in company with head cover 11, with the first contact surface 531 of contact bearing 500.
Protrusion 310B is the bar projected upwards from opposed faces F3.Protrusion 310B can have generally cylindrical profile.By protrusion
310B is inserted in the through-hole 214A formed in supporting walls 214.It passes vertically through supporting walls 214 and forms through-hole 214A.In this side
Face, datum level FB have the opening opened towards rotation axis X1.The protrusion 310B in through-hole 214A is inserted in by supporting walls 214
Support, with being capable of vertical shift.In other words, contact component 310 can be supported by protrusion 310B by supporting walls 214.
Protrusion 310B includes the slit 314 extended downwards above the 310B of protrusion.The slit 314 opens up, and
Protrusion 310B is passed through to form slit 314 along width direction.Therefore, the top of protrusion 310B is branched into along front-rear direction pair
Accurate Liang Ge branches.
In the peripheral surface on the top of protrusion 310B, two outwardly projecting (2) pawl in the longitudinal direction is formed
315.Pawl 315 can be engaged with the upper surface of supporting walls 214.Just towards the upper end along front-rear direction from the periphery of protrusion 310B
For the overhang on surface, each pawl 315 is tapered with smaller.In other words, pawl 315 for front-rear direction it is outer upwardly
Inwardly and downwardly it is inclined outwardly.
Therefore, while the branch of the bifurcated in the top of protrusion 310B can elastically inwards deform, protrusion 310B
It is pushed upwardly in the through-hole 214A that can be formed in supporting walls 214, and pawl 315 can enter through-hole 214A.Once pawl
315 are pushed through through-hole 214A, and the branch of bifurcated can be restored to original shape, and pawl 315 can be with supporting walls 214
Above engage.
Each sheet spacer 320 can be intervened between datum level FB and the opposed faces F3 of contact component 310
One piece of rectangular slab.Sheet spacer 320 is arranged to orthogonally to be unfolded with optical axis direction.Sheet spacer 320 is with identical
Thickness is that size in the direction of the optical axis is formed, which (or can more preferably exist for example between 0.025mm and 0.2mm
Between 0.05mm and 0.1mm) range in.
The size in the longitudinal direction of sheet spacer 320 can be less than the ruler in the longitudinal direction of opposed faces F3
It is very little.The size in the direction of the width of sheet spacer 320 can be less than the size in the direction of the width of opposed faces F3.Piece
Material shape spacer 320 has protrusion 310B can be with perforative hole 321.
As shown in FIG. 3, when photohead 40 is at retracted position, gap adjustment component 300 hangs down from the second frame 200
Under, to be supported by the second frame 200.Particularly, it hangs down in contact component 310 from the second frame 200 with by the second frame 200
While support, sheet spacer 320 is stacked on contact component 310 at the position being vertically spaced apart from from the second frame 200
On.In this respect, the distance between datum level FB and opposed faces F3 can be set at and can stack maximum and can take number
Sheet spacer 320 size.The maximum of sheet spacer 320 can take number that can for example be considered by manufacturer
Potential foozle is determined or is adjusted.
Meanwhile as shown in FIG. 4, when photohead 40 is when can be at exposure position, sheet spacer 320 is intervened
Between datum level FB and opposed faces F2.Particularly, with photohead 40 from retracted position towards can exposure position move, contact site
Part 310 can be with the first contact surface 531 of contact bearing 500, and the first contact surface 531 can inhibit contact component 310 into one
Moved further.Meanwhile second frame 200 can move to approach contact component 310 relative to contact component 310.As datum level FB
During the device 302 of contact interval, the second frame 200 can be stopped not move further, and photohead 40 can be located at
Proper position on optical axis direction.Meanwhile second contact surface F4 be located at from rotation axis X1 than the first supporting surface F1 from rotation
At the near position of axis X 1.
Bearing 500 is formed from a resin.As shown in FIG. 7, each bearing 500 includes what is be integrally formed：It is cylindrical in shape
The supporting part 510 of shape；From the substantial middle for rotation axis direction of the supporting part 510 in radial directions to outer shroud
The flange part 520 being unfolded to shape；From the neighboring area of the flange part 520 photosensitive drums 51A (see Fig. 8) radial direction to extension
The extension 530 stretched；Guide portion 540；Rotate adjustment portion 550 and roller support portion 560.Flange part 520, extension 530, guide portion
540 continuously extend outwardly with rotation adjustment portion 550 from supporting part 510.
Supporting part 510 can be pivotably supported flange 400 as shown in FIG. 8.Supporting part 510 includes cantilever 511, should
Cantilever 511 can for example be pressed down against flange 400 towards the side in radial directions of photosensitive drums 51A.Cantilever 511 is by cloth
Put between two (2) slits formed on the side of supporting part 510 and be capable of the part of flexible deformation in radial directions.
Cantilever 511 is resin spring, the resin spring relative to rotation axis X1 tilt at the 511A of end closer to rotation axis
X1, to apply pushing force FR, so as to the thrust flanges 400 on the direction towards rotation axis X1.It is seen along rotation axis direction
It examines, cantilever 511, which is located at, orthogonally to be extended through with the rotation axis X1 of photosensitive drums 51A on the straight line L1 of the first contact surface 531.
Extension 530 extends from flange part 520 upwardly toward the contact component 310 in photohead 40, to be in the shape of plate
Expansion.Edge has said first contact surface 531 to extension 530 on it.First contact surface 531 is formed with optical axis direction just
Hand over the plane of ground expansion.First contact surface 531 can be with the contact component 310 in contact exposure head 40, to be limited to lens array
Distance between 102 and photosensitive drums 51A in the direction of the optical axis.
Guide portion 540 from flange part 520 from photosensitive drum component 51 towards on the direction of developer roll 62 (for example, in fig. 8
Extension upwards to the right).For the direction of rotation of photosensitive drums 51A, at the position in the downstream of extension 530, guide portion 540 connects
Adjacent extension 530 continuously.Guide portion 540 has guiding groove 541, which can be in the radial direction of photosensitive drums 51A
The axis 62A of developer roll 62 is movably supported on direction.
For the direction of rotation of photosensitive drums 51A, at the position in the downstream of guide portion 540, rotation adjustment portion 550 is continuous
Ground abuts guide portion 540.It rotates adjustment portion 550 and includes the first rotation adjusting face 551, which can be
Position of the bearing 500 relative to drum frame 55 is adjusted in the direction of rotation of photosensitive drums 51A.First rotation adjusting face 551 is arranged
Into：Towards the downstream for the direction of rotation of photosensitive drums 51A, and contact drum frame 55.
At the position separated in the direction of rotation along photosensitive drums 51A from extension 530 and from rotation adjustment portion 550, roller
Support portion 560 is disposed in along the direction of rotation of photosensitive drums 51A between extension 530 and rotation adjustment portion 550.Roller support portion
Part 560 is located at the rotation axis X1 positions opposite with rotation adjustment portion 550.
Roller support portion 560 includes supported hole 561 to be pivotably supported clearer 54.Roller support portion 560 includes the second rotation
Modulation nodal section 562, the second rotation adjusting face 562 can adjust bearing 500 relative to drum in the direction of rotation of photosensitive drums 51A
The position of frame 55.Second rotation adjusting face 562 is arranged to：Towards the downstream for the direction of rotation of photosensitive drums 51A, and
Contact drum frame 55.In order to adjust the position of bearing 500 relative to drum frame 55, it is not necessary to the first rotation adjusting face 551 and second
Both rotation adjusting faces 562 but at least one rotation adjusting face therein should contact drum frame 55, with relative to drum frame
Frame 55 adjusts the position of bearing 500.
Second rotation adjusting face 562 is positioned at the rotation axis X1 from photosensitive drums 51A than the first contact surface 531 from photosensitive drums
The rotation axis X1 of 51A far from.Meanwhile observed along rotation axis direction, the first rotation adjusting face 551 and second is revolved
Modulation nodal section 562 is disposed in the straight line L1 across the rotation axis X1 that extends through the first contact surface 531 and photosensitive drums 51A
On side and opposite side (side i.e. opposite each other).
Then, the demonstration methods (method for particularly, assembling photohead 40) of manufacture color printer 1 explained below.
In the following description, it can focus on and determine the method for adopted sheet spacer 320.Meanwhile it will be disposed in just
The sheet spacer 320 on the side and the opposite side (such as left side and right side) for width direction is identical
's.Therefore, in the following description, the sheet spacer 320 for being disposed in the left side will be represented into overall sheet spacer
320, that is, will omit about the explanation that will be disposed in the sheet spacer 320 on the right.
As shown in figure 9 a, initially, LED array 101, lens array 102 and memory 103 can be installed in first
On frame 100.Hereafter, the first frame 100 can be set in test device.Hereafter, LED array 101 can be manipulated to
Emit light, and can be measured in the first distance D1 being supported between face 121 and focus FP of the first frame 100.
One frame 100 tool there are two (2) is supported face 121, and (i.e. one of the left side is supported another of face 121 and the right and is supported
Face 121) while, it should measure the first distance that face 121 is supported for each described two being supported in face 121
D1.First distance D1 can be recorded in memory 103.
In addition, as shown in figures 9 b and 9, about the second frame 200, it can measure and obtain in datum level FB and second
The second distance D2 (obtaining process) between the first supporting surface F1 on such as left side of side in frame 200.First supporting surface
F1 is the plane for being supported face 121 for being used to support the first frame 100.In this respect, when the first frame 100 is attached afterwards
During to the second frame 200, second distance D2 will be equal to the distance between datum level FB and the first supporting surface F1.Measure for
The second distance D2 of each of (such as on left side and the right) on the side and the opposite side.It is deposited using memory 103
The first distance D1 is stored up, the first distance D1 and second distance D2 can be measured separated at the time of or in separated place.
Hereafter, the first distance D1 away from the first frame 100 that will be attached to the second frame 200 is obtained from memory 103
(obtaining process).Based on the first distance D1 obtained on the left side and second distance D2, obtain the left side relative to datum level FB and
The position (obtaining process) of the focus of the photohead 40 of speech.Particularly, it by combining the first distance D1 and second distance D2, calculates
And obtain the distance D3 (not shown) between datum level FB and focus FP (photohead 40 i.e. for datum level FB
The position of focus).
Meanwhile it as shown in Fig. 9 C, about the contact component 310 that will be engaged with the datum level FB on the left side, measures simultaneously
Obtain the length D4 (obtaining process) between opposed faces F3 and the second contact surface F4 in the direction of the optical axis.It is similary to obtain on the right
Distance D4.
Hereafter, it based on distance D3 corresponding with the position of focus FP and length D4, determines adopted sheet interval
The number (determination process) of device 320.Particularly, the difference between distance D3 and length D4 is calculated, and refers to each sheet material
The size T1 in the direction of the optical axis of shape spacer 320 determine for fill the difference sheet spacer 320 number N.It will
The number N of adopted sheet spacer 320 can be determined by equation [1]：N=(D3-D4)/T1.
The spacer 320 to ascertain the number is laminated by the protrusion 310B in contact component 310, and hereafter, with stacking
The contact component 310 of sheet spacer 320 be assembled into the second frame 200.Accordingly, it is determined that the sheet interval of number
Device 320 can be intervened in position between datum level FB and opposed faces F2 (assembling process).
According to above-mentioned construction and method, it may be possible to realize the benefit described in the following paragraphs.
For contact exposure head 40 the first contact surface 531 be arranged on support by with the material for photosensitive drums 51A not
In the bearing 500 of flange 400 made of same material.Therefore, the barrier on photosensitive drums 51A can not be allowed to be easily accessible
Gap between photohead 40 and bearing 500.In this respect, in the case of no barrier, in lens array 102 and photosensitive
Distance between drum 51A in the direction of the optical axis correctly can be limited and be maintained, and can inhibit the focus of photohead 40
Deviate.
Bearing 500 is located on the outside for rotation axis direction of photosensitive drums 51A.Therefore, the first contact surface 531 can
To be maintained at the surface of the upward out photosensitive drums 51A in rotation axis side, so as to more effectively inhibit the barrier on photosensitive drums 51A
The gap that object is hindered to enter between the first contact surface 531 and photohead 40.
The outer diameter of canister portion 421 in flange 400 is less than the outer diameter of photosensitive drums 51A.Thus, for example the outer diameter with canister portion 421
Construction more than the outer diameter of photosensitive drums compares, and the contact area between canister portion 421 and bearing 500 can be reduced.Therefore,
Abrasion in canister portion 421 and/or bearing 500 can be suppressed.
Flange 400 has round flange portion 422；Therefore, when flange 400 is pushed into photosensitive drums 51A, work as round flange
When portion 422 contacts the end face of photosensitive drums 51A, during flange 400 can be placed in correct position relative to photosensitive drums 51A.
First contact surface 531 is disposed in the extension extended in the radial direction in photosensitive drums 51A from flange part 520
530 end.In other words, the first contact surface 531, which is disposed in, is extended closer at the position of photohead 40.In this side
Face, contact component 310 can be reduced, and expose from the second frame 200 towards 531 downward projection of overhang of the first contact surface
The form of shaven head 40 can be less complex.
First contact surface 531 is located on the outside for the radial direction of photosensitive drums 51A on the surface of photosensitive drums 51A.
Therefore, the first contact surface 531 may remain in the radial direction in the foreign side on the surface of photosensitive drums 51A, so as to more effective
Ground inhibits the barrier on photosensitive drums 51A to enter the gap between the first contact surface 531 and photohead 40.
First contact surface 531 is flat, and the second contact surface F4 is sphering, so as to which the first contact surface 531 and second connects
Contacting surface F4 can linearly be in contact with each other.Therefore, the distance between lens array 102 and photosensitive drums 51A in the direction of the optical axis
It can correctly be limited.
First contact surface 531 is formed to be flat with optical axis direction to be orthogonally unfolded, and photohead 40 can be
It is slided on the sub-scanning direction orthogonal with optical axis direction on first contact surface 531.Therefore, when photohead 40 is with regard to sub-scanning direction
For when being moved to correct position, can prevent photohead 40 from interfering with the first contact surface 531.
Flange 400 and bearing 500 made of resin can be easily formed into preferred shape.Meanwhile flange 400
Sleeve bearing can be formed together with bearing 500.
The cantilever 511 formed in bearing 500 can be towards side thrust flanges 400 in radial directions.Therefore, may be used
The distance between the position of focus of photohead 40 and the surface of photosensitive drums 51A to be inhibited to change.In addition, cantilever 511 can be with
Resistance is applied to the rotation of photosensitive drum component 51；Therefore, the uneven of the rotation of photosensitive drum component 51 can be suppressed, and feel
Light drum component 51 can firmly rotate.
It is observed along rotation axis direction, cantilever 511 is located at orthogonally to be extended through with the rotation axis X1 of photosensitive drums 51A
On the straight line L1 of first contact surface 531.In this respect, cantilever 511 squeezes photosensitive drum component 51 to inhibit to rotate non-uniform side
To can be consistent with the optical axis direction for photohead 40.Therefore, between lens array 102 and photosensitive drums 51A in optical axis side
Upward distance can be limited correctly.
Inside 410 in flange 400 be disposed in for photohead 40 can exposure range ER with regard to rotation axis direction
For outside.Therefore, while flange 400 can be closely assembled in photosensitive drums 51A, flange 400 can be prevented
Make photosensitive drums 51A with can the consistent parts of exposure range ER deform.
At the rotation center of flange 400, such as the right, arranges the axis 610 being electrically connected with photosensitive drums 51A on side.
Therefore, photosensitive drums 51A can be connected by axis 610 and main casing 10.
For example having on another side in the flange on the left side 400 can be by drum connector 402 that rotary driving force is input to.
Therefore, rotary driving force can be efficiently entered to flange 400, so as to which photosensitive drum component 51 can preferably be rotated.
It is supported on the right with the bearing on the left side 500 by drum frame 55；Therefore, photosensitive drum component 51 and bearing 500 can lead to
Drum frame 55 is crossed to be unitized.
Bearing 500 not only has and can limit the first of the position in the direction of the optical axis of photohead 40 the contact based on it
Face 531, but also rotate adjusting face 562 with the first rotation adjusting face 551 and second.Therefore, bearing 500 can be inhibited to revolve
Turn to vibrate on direction, so as to which the position of the focus of photohead 40 is inhibited to deviate.
Second rotation adjusting face 562 is disposed in more remote from rotation axis X1 than the first contact surface 531 from rotation axis X1
At position, so as to which the second rotation adjusting face 562 can be from adjusting photosensitive drum component 51 at rotation axis X1 remote positions
Rotation.Therefore, the rotation of photosensitive drums 51A can be adjusted effectively.In addition, the vibration at the second rotation adjusting face 562 is (i.e.
Vibrate in a rotational direction) amount can be less than the amount of vibration at the first contact surface 531.Therefore, photohead 40 can be with
It effectively maintains to locate in correct position by the first contact surface 531.
First rotation adjusting face 551 and second rotates adjusting face 562 and is disposed in across the rotation for extending through photosensitive drums 51A
On the side opposite each other of the straight line L1 of shaft axis X1 and the first contact surface 531.Therefore, photosensitive drums 51 are vibrated in a rotational direction
It can be effectively suppressed.
Being used to support the roller support portion 560 of clearer 54 has the second rotation adjusting face 562；Therefore, clearer 54 can be with
It is supported by the roller support portion 560 that can inhibit to vibrate in a rotational direction.Therefore, clearer 54 can be relative to photosensitive drums
51A is maintained at preferred position.
Vibration can be rotated the axis that adjusting face 562 inhibits by the first rotation adjusting face 551 and second in a rotational direction
Holding 500 has guide portion 540.Therefore, developer roll 62 can be in a rotational direction maintained at preferably relative to photosensitive drums 51A
At position.
Sheet spacer 320 is intervened between datum level FB and contact component 310 in the second frame 200.Meanwhile
Due to the error that may occur when manufacture includes the product of the first frame 100, the second frame 200 and contact component 310, relatively
It the position of the focus for photohead 40 for datum level FB may not be always initially correct.However, with intervention the
The sheet spacer 320 of the adjusting number between datum level FB and contact component 310 in two frames 200, the position of focus
It can correctly be limited.
Each sheet spacer 320 is in the shape of plate；Therefore, the thickness of sheet spacer 320 can easy quilt
Control, and the amount of the error of the thickness (size i.e. in the direction of the optical axis) of sheet spacer 320 can be reduced.
Sheet spacer 320 is formed with same thickness；Therefore, the worker of assembling photohead 40 can easily pass through change
The number of sheet spacer 320 intervened is adjusted to the position of focus.
Contact component 310 can in the direction of the optical axis be moved relative to the second frame 200.When photohead 40 is by towards photosensitive
When drum 51A is pushed, the second frame 200 can be moved relative to contact component 310, and sheet spacer 320 can be situated between
Enter between datum level FB and contact component 310.Thus, for example the construction with contact component to be fixed to the second frame by screw
It compares, the product of such as screw can be eliminated, and manufactured cost and can be reduced.
Sheet spacer 320 has the hole 321 that the protrusion 310B of contact component 310 can be penetrated through.Therefore, can press down
Sheet spacer 320 processed is shifted from contact component 31.
By compressed spring SP, datum level FB, 320 and of sheet spacer that photohead 40 is pushed towards photosensitive drums 51A
Contact component 310 can be pushed to be closely in contact with each other, and the position of focus can correctly be limited.
Datum level FB is arranged in the second frame 200 separated with the first frame 100, and includes the light of LED array 101
Department of the Chinese Academy of Sciences's part can be installed on the first frame 100.Therefore, can be with for pushing the power of photohead 40 towards photosensitive drums 51A
While being passed to datum level FB, the optical component in the first frame 100 can be prevented to be subjected to the power.
The face 121 that is supported in first frame 100 is arranged to light emitting surface in face of lens array 102 and towards rotation
Axis X 1.Therefore, it can measure and obtain correct positions of the focus FP relative to the face that is supported 121, and focus can be obtained
Relative to the correct position of datum level FB.
Second supporting surface F2 by return be set to it is remote from rotation axis X1 than the first supporting surface F1 from rotation axis X1, thus
The overhang that gap adjustment component 300 is protruded from the surface (lower face of protruding portion 220) towards photosensitive drums 51A of photohead 40
It can be reduced, and gap adjustment component 300 can be inhibited to be interfered by neighbouring part or product.
The first supporting surface F1 support the first frame 100 while, for rotation axis direction with the first supporting surface
Protruding portion 220 at basically identical position protrude in the vertical direction with from photosensitive drums 51A than lens array 102 from photosensitive drums
51A is near.Therefore, lens array 102 can be reliably protected by protruding portion 220.
The width on sub-scanning direction of protruding portion 220 is more than the width on sub-scanning direction of lens array 102.
Therefore, the protruding portion 220 with larger width can reliably protect lens array 102.
Solid spacer 310A in contact component 310 is tapered with towards photosensitive drums 51A smallers.Therefore, when photohead 40
When being moved to closer to photosensitive drums 51A, contact component 310 can be inhibited to be interfered by neighbouring product.
Although it have been described that implement an example of the present invention, skilled person will understand that：Fall with as
Multiple variants and the displacement of the imaging device and drum unit in spirit and scope of the present disclosure illustrated in the claims.It manages
Above-mentioned specific features or action need not be restricted to by solving theme defined in the claims.But disclose above-mentioned specific features and
It acts as the example forms for realizing claim.
The example of change explained below that can be derived from above-described embodiment.In the following example, with implementing above
Product or the essentially identical or similar product of structure or structure described in example can be marked by identical reference numeral, and that
The explanation of a little products or structure can be omitted.
For example, the outer diameter of canister portion 421 may not necessarily be less than the outer diameter of photosensitive drums 51A, and it may be greater than photosensitive drums 51A's
Outer diameter.As long as the diameter of canister portion 421 is different from the outer diameter of photosensitive drums 51A, can be in the peripheral surface and photosensitive drums of canister portion 421
Difference in height is formed between the surface of 51A.Therefore, with the wherein surface of the peripheral surface of canister portion 421 and photosensitive drums 51A identical straight
The construction being aligned on diameter compares, and the barrier on photosensitive drums 51A can be inhibited to enter between canister portion 421 and bearing 500.So
And on the other hand, the peripheral surface of canister portion 421 and the surface of photosensitive drums 51A may not necessarily be detached by ladder, but can be in phase
It is same to be diametrically aligned.
For another example, the first contact surface 531 can or can not in conveyor belt 73 (see Fig. 1) and sense
Contact area between light drum 51A is parallelly unfolded, as long as the first contact surface 531 is orthogonal with the rotation axis X1 of photosensitive drums 51A
It is unfolded on ground.
For another example, the first contact surface 531 and the second contact surface F4 may not necessarily distinguish flat form and circle
The form of change, but can be in the form of reverse, that is, the first contact surface 531 can be sphering, and the second contact surface F4 can be with
It is flat.For another example, the end of sphering can spherical in shape or semi-spherical form, the first contact surface and the second contact surface
It can be point contact with one another by the form.
For another example, it may not necessarily use for the head frame of photohead 40 and include the first frame 100 and the second frame
The multiple frame construction of frame 200, but can be with for keeping the single frame of optical component and gap adjustment component 300
Construction.
For another example, guide portion 540, which may not necessarily be movably supported, can contact photosensitive drums 51A and photosensitive
The developer roll 62 rotated on drum 51A.For example, guide portion 540 can have separator, which can develop
Roller 62 can contact the contact position of photosensitive drums 51A and developer roll 62 can be by between the separation point position that photosensitive drums 51A is detached
Mobile developer roll 62.
For another example, the material for including the said products of flange and bearing may not necessarily be restricted to above-mentioned
Those materials, but can be replaced by other available materials.For another example, bearing may not necessarily be quill
It holds, but may, for example, be ball bearing.
For another example, the disclosure may not necessarily be applied to color printer 1, but can be applied to another
The imaging device of type (including such as duplicator and multifunction peripheral machine).
In addition, the product and part in the construction and exemplary configuration of above-described embodiment can be by arbitrarily or selective
It combines on ground.
Claims (17)
1. a kind of imaging device, including：
Photosensitive drum component, the photosensitive drum component include：
Photosensitive drums；With
Flange, the flange are arranged on the at one end on the axial direction of the axis in the photosensitive drums of the photosensitive drums,
The inner surface of photosensitive drums described in the Hp contacts；
Photohead, the photohead include：
Multiple optical transmitting sets, the multiple optical transmitting set are aligned along the axial direction；
Lens array, the lens array focus on the light from the optical transmitting set in the photosensitive drums；With
Head frame, the head frame support the optical transmitting set and the lens array；And bearing, the bearing are directly rotatable
Ground supports the flange, and the bearing includes the first contact surface, and first contact surface is contacted with the photohead, to be limited to
Along the distance in the direction of the optical axis of the light between the lens array and the photosensitive drums.
2. imaging device according to claim 1,
For wherein described flange including inside and outside, the inside is disposed in the just axial direction side of the end face of the photosensitive drums
On inside for, the outside is disposed in the outside for the axial direction of the end face of the photosensitive drums
On；And
External peripheral surface described in wherein described bearing touch.
3. imaging device according to claim 2,
Wherein described outside includes canister portion, at cartridge, flange described in the bearings, and the outer diameter difference of cartridge
In the outer diameter of the photosensitive drums.
4. imaging device according to claim 3,
Wherein the outer diameter of cartridge is less than the outer diameter of the photosensitive drums.
5. imaging device according to claim 2,
Wherein described outside includes round flange portion, and the outer diameter in the round flange portion is more than the outer diameter of the photosensitive drums,
The round flange portion is arranged to the end face for contacting the photosensitive drums.
6. imaging device according to claim 2,
Wherein described inside be disposed in for the axial direction for the photohead can exposure range outside.
7. imaging device according to claim 1,
Wherein described first contact surface is located at the outer for the radial direction of the photosensitive drums of the outer surface of the photosensitive drums
On side.
8. imaging device according to claim 7,
Wherein described bearing includes：
Supporting part, the supporting part have cylindrical form；With
Extension, the extension have plate-like shape, and the extension is from the supporting part described outside in the radial direction
Extension.
9. imaging device according to claim 1,
Wherein described photohead includes the second contact surface, and second contact surface is configured to contact first contact surface；And
And
A contact surface in wherein described first contact surface and second contact surface is the face of sphering, and described first connects
Another contact surface in contacting surface and second contact surface is flat face.
10. imaging device according to claim 9,
Wherein described first contact surface is the flat face being orthogonally unfolded with the optical axis direction.
11. imaging device according to claim 1,
Wherein described flange and the bearing are formed from a resin；And
Wherein described bearing is sleeve bearing.
12. imaging device according to claim 1,
Wherein described bearing includes cantilever, and the cantilever is configured to the flange towards the photosensitive drums in radial direction
On side squeeze.
13. imaging device according to claim 12,
It is wherein observed along the axial direction, the cantilever is located to be extended through with the axis vertical take-off of the photosensitive drums
On the straight line of first contact surface.
14. imaging device according to claim 1, further comprises：
The metal shaft being electrically connected with the photosensitive drums, the metal shaft are disposed at the rotation center of the flange.
15. imaging device according to claim 1, further comprises：
Wherein described flange includes connector, and rotary driving force is input to the connector.
16. imaging device according to claim 1,
Wherein the flange is arranged in the end regions of each on side and opposite side of the photosensitive drums；
Wherein the axis is arranged on the end regions of each on the side and the opposite side of the photosensitive drums
It holds；And
Wherein described imaging device includes drum frame, and the drum frame is configured on the side and is propped up on the opposite side
Support the bearing.
17. a kind of drum unit, including：
According to the photosensitive drum component of any one of claim 1 to 16 and the bearing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016243132A JP6919188B2 (en) | 2016-12-15 | 2016-12-15 | Image forming device and drum unit |
| JP2016-243132 | 2016-12-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108227433A true CN108227433A (en) | 2018-06-29 |
| CN108227433B CN108227433B (en) | 2022-05-24 |
Family
ID=62633455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711347190.4A Active CN108227433B (en) | 2016-12-15 | 2017-12-15 | Image forming apparatus and drum unit |
Country Status (2)
| Country | Link |
|---|---|
| JP (4) | JP6919188B2 (en) |
| CN (1) | CN108227433B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000338753A (en) * | 1999-05-31 | 2000-12-08 | Kyocera Corp | Image forming device |
| JP2006084637A (en) * | 2004-09-15 | 2006-03-30 | Fuji Xerox Co Ltd | Image forming apparatus and image quality adjusting method |
| CN102678752A (en) * | 2011-03-08 | 2012-09-19 | 兄弟工业株式会社 | Bearing device, drum unit, and image-forming device |
| CN103995448A (en) * | 2013-02-19 | 2014-08-20 | 富士施乐株式会社 | Image forming apparatus and exposure device |
| CN105278283A (en) * | 2014-07-24 | 2016-01-27 | 株式会社理光 | Optical-writing-head positioner, processing unit and image forming apparatus |
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| JP4073234B2 (en) | 2001-04-06 | 2008-04-09 | 株式会社沖データ | Optical head positioning device, LED head positioning device, and printing device |
| JP2005014497A (en) | 2003-06-27 | 2005-01-20 | Kyocera Mita Corp | Image forming apparatus |
| JP2006301095A (en) * | 2005-04-18 | 2006-11-02 | Murata Mach Ltd | Image forming apparatus |
| JP2007086482A (en) * | 2005-09-22 | 2007-04-05 | Fuji Xerox Co Ltd | Image forming apparatus and photoreceptor unit |
| JP4842683B2 (en) | 2006-03-30 | 2011-12-21 | 株式会社沖データ | Image forming apparatus |
| JP5251079B2 (en) | 2007-11-16 | 2013-07-31 | 富士ゼロックス株式会社 | Image forming apparatus and image carrier module |
| JP2011079242A (en) | 2009-10-07 | 2011-04-21 | Fuji Xerox Co Ltd | Image forming apparatus |
| JP5560945B2 (en) | 2010-06-18 | 2014-07-30 | ブラザー工業株式会社 | Image forming apparatus |
| JP5316517B2 (en) | 2010-11-12 | 2013-10-16 | ブラザー工業株式会社 | Image forming apparatus |
| JP6010969B2 (en) | 2012-03-29 | 2016-10-19 | ブラザー工業株式会社 | Image forming apparatus |
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| JP2000338753A (en) * | 1999-05-31 | 2000-12-08 | Kyocera Corp | Image forming device |
| JP2006084637A (en) * | 2004-09-15 | 2006-03-30 | Fuji Xerox Co Ltd | Image forming apparatus and image quality adjusting method |
| CN102678752A (en) * | 2011-03-08 | 2012-09-19 | 兄弟工业株式会社 | Bearing device, drum unit, and image-forming device |
| CN103995448A (en) * | 2013-02-19 | 2014-08-20 | 富士施乐株式会社 | Image forming apparatus and exposure device |
| CN105278283A (en) * | 2014-07-24 | 2016-01-27 | 株式会社理光 | Optical-writing-head positioner, processing unit and image forming apparatus |
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| JP2024050964A (en) | 2024-04-10 |
| CN108227433B (en) | 2022-05-24 |
| JP6919188B2 (en) | 2021-08-18 |
| JP2021170133A (en) | 2021-10-28 |
| JP7168043B2 (en) | 2022-11-09 |
| JP2018097241A (en) | 2018-06-21 |
| JP7444221B2 (en) | 2024-03-06 |
| JP2022191479A (en) | 2022-12-27 |
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