CN103309195A - Photosensitive drum for laser printing machine - Google Patents

Photosensitive drum for laser printing machine Download PDF

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Publication number
CN103309195A
CN103309195A CN2013102613462A CN201310261346A CN103309195A CN 103309195 A CN103309195 A CN 103309195A CN 2013102613462 A CN2013102613462 A CN 2013102613462A CN 201310261346 A CN201310261346 A CN 201310261346A CN 103309195 A CN103309195 A CN 103309195A
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CN
China
Prior art keywords
force block
blind hole
along
photosensitive
photosensitive drums
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Granted
Application number
CN2013102613462A
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Chinese (zh)
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CN103309195B (en
Inventor
杨晓锋
赖亚勇
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Print Rite Unicorn Image Products Co Ltd
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Print Rite Unicorn Image Products Co Ltd
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Application filed by Print Rite Unicorn Image Products Co Ltd filed Critical Print Rite Unicorn Image Products Co Ltd
Priority to CN201310261346.2A priority Critical patent/CN103309195B/en
Publication of CN103309195A publication Critical patent/CN103309195A/en
Priority to PCT/CN2014/079899 priority patent/WO2014206206A1/en
Application granted granted Critical
Publication of CN103309195B publication Critical patent/CN103309195B/en
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    • 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
    • G03G15/75—Details relating to xerographic drum, band or plate, e.g. replacing, testing
    • G03G15/757—Drive mechanisms for photosensitive medium, e.g. gears

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Discharging, Photosensitive Material Shape In Electrophotography (AREA)
  • Electrophotography Configuration And Component (AREA)

Abstract

The invention relates to a photosensitive drum for a laser printing machine. The photosensitive drum comprises a photosensitive part and a transmission part, wherein the transmission part is fixed on one side of the photosensitive part along the length direction of the photosensitive part; a cylindrical stress block is arranged at one end, which is back on to the photosensitive part along the length direction of the photosensitive part, of the transmission part; four blind holes which are inwards sunken along the axial direction are formed in the outer end wall, which is back on to the photosensitive part, of the stress block along the axial direction; the blind holes are provided with continuous hole walls on the axial cross section of the stress block; on the axial cross section of the stress block, the four blind holes are symmetrically distributed relative to the radial center of the stress block; the stress block of the photosensitive drum is accurately aligned to a driving head of the laser printing machine, so that the required rotating driving force can be obtained stably from the laser printing machine.

Description

The laser printer photosensitive drums
Technical field
The present invention relates to the component parts photosensitive drums as laser printer.This photosensitive drums is made of photosensitive part and drive disk assembly.
Background technology
Being that the imaging process of the laser printer of basic comprising core is with handle box 100, seeing Fig. 1, is charged equably by charging roller 102 in photosensitive drums 101 surfaces.Laser scanner 103 contains image information and through the laser beam 104 of ovennodulation to photosensitive drums 101 external cylindrical surfaces emissions, cylindrical surface in photosensitive drums 101 after laser beam 104 irradiations forms the static charge distribution plan that its distribution has difference, that is the electrostatic latent image corresponding with image to be copied.Afterwards, the developer of carbon dust 106 that autography roller 105 transmits and so on is under the state of regulating bed thickness through powder delivery cutter 113 then be adsorbed on the cylindrical surface of photosensitive drums 101, after aforementioned electrostatic latent image covering, it is converted to can macroscopic visual image.Along with the rotation of photosensitive drums 101, the visual image that is formed at photosensitive drum surface by carbon dust 106 replaces to the position at transfer roll 107 places.Effect through the entrained transfer voltage of transfer roll 107, the carbon dust of visual image form is transferred on the surface of recording mediums 108 such as paper, after heating pressurization with the carbon dust by the visual image form on warm-up mill 111 and 112 pairs of recording mediums 108 of backer roll, carbon dust is penetrated in the fibrage of recording medium 108, and the visual image that carbon dust is formed for good and all solidifies on recording medium 108.Visual image on the aforementioned photosensitive drums 101 is after being transferred roller 107 transfer printings, residual carbon dust 109 attached to it is struck off to useless powder collecting bin by useless powder scraping blade 110, and photosensitive drums 101 surfaces return to after the corresponding electric equipment that disappears is eliminated static does not have the dustless stand-by state of electricity.So just finished a basic imaging workflow.This flow process is the result of cycle operation repeatedly, just can obtain the needed image of printing person.
For above-mentioned handle box 100, different manufacturers can be according to function, serviceable life and the construction features etc. of handle box 100 each component parts, go out the different product of integrated level in conjunction with oneself research and development pattern making.For example, the developer roll 105 of bearing developing function, the parts such as powder storehouse bearing the powder delivery cutter 113 of regulating carbon dust bed thickness function and bear developer storage, supplying functional are integrated into independently Delevoping cartridge.Such Delevoping cartridge has storage powdery type developer and developer is transported to photosensitive drums 101 surfaces, the effect that electrostatic latent image is developed.101 of photosensitive drums directly are disposed in the laser printer in advance, and perhaps for example charging roller 102 and useless powder scraping blade 110 are disposed in the laser printer after combining the electrophotographic image forming unit separately again with other parts.
The course of work of aforementioned laser printer no matter photosensitive drums 101 is pre-configured in laser printer, still is disposed in the laser printer after the assembly with other parts separately again, and the formation of its visual image all depends on the continuous rotation of photosensitive drums 101.Under this working method, the rotation of photosensitive drums 101 depends on the rotary driving force of laser printer generation and the drive disk assembly 115 of bearing this driving force transformation task.
Referring to Fig. 2,3,4, the basic comprising of photosensitive drums 101 comprises photosensitive part 114 and drive disk assembly 115.The photosensitive part 114 general hollow cylinders that adopt aluminium to prepare are that aluminum barrel is basic building block.External cylindrical surface at aluminum barrel is coated with photosensitive material.Axial end at aluminum barrel is equiped with drive disk assembly 115.Drive disk assembly 115 passes to photosensitive drums 101 with the rotary driving force that laser printer produces, and makes photosensitive drums 101 produce rotation.
The structural feature of drive disk assembly 115 is rendered as right cylinder substantially.This cylindrical external cylindrical surface is provided with driven wheel 116.Driven wheel 116 can pass to developer roll 105 parts such as grade (consulting Fig. 1) to the rotary driving force that drive disk assembly 115 obtains.In order to obtain rotary driving force from laser printer, axially be provided with cylindrical force block 117 back to an end of photosensitive part 114 at drive disk assembly 115 along self.The radial outer end portion of force block 117 be provided with four its be distributed symmetrically in the gap 118 of force block 117 radial center.Gap 118 along force block 117 radially the outer end and axially all be in open state back to sides of photosensitive part 114 along force block 117, the driving gear of being convenient on the laser printer driving head 119 120 can insert in the gap 118, referring to Fig. 6 a, b, realize driving gear 120 with the engagement between the gap 118, to obtain the rotary driving force that laser printer produces.
Above-mentioned photosensitive drums 101 obtains the mode of rotary driving force from laser printer, because when assembling, photosensitive drums 101 was from self directly upwards being pushed into the laser printer, laser printer driving head 119 sprang back to the state of driving gear 120 insertion gap 118 before this again after photosensitive drums 101 axial rollbacks in photosensitive drums 101 enters the process of laser printer.In this process, because driving gear 120 upwards can form mobile with respect to gap 118 in force block 117 footpaths, cause both radial center of driving head 119 and force block 117 to occur dislocation easily, so that after photosensitive drums 101 is mounted in the laser printer 120 pairs of four driving gears separately the outer wall of gap 118 form asymmetric and inhomogeneous compressing, damage driving gear 120 or gap 118 influence photosensitive drums 101 with the torque transfer between the laser printer.
Summary of the invention
Forbidden to cause photosensitive drums with the effective problem of transfer of torque between the laser printer at above-mentioned because of driving head and force block contraposition, the object of the invention is to provide a kind of photosensitive drums of laser printer.This photosensitive drums can overcome driving head and the inaccurate phenomenon of force block contraposition effectively, in order to stably obtain required rotary driving force from laser printer, and then avoid the drive disk assembly of laser printer driving head and photosensitive drums when assembling and transfer of torque, to sustain damage.
For reaching to above-mentioned goal of the invention, the present invention has developed a kind of pointed laser printer photosensitive drums.It comprises photosensitive part and drive disk assembly.Drive disk assembly is fixed in photosensitive part along a side of self length direction.The end of drive disk assembly along the photosensitive part length direction back to photosensitive part is provided with cylindrical force block.Force block axially is provided with blind hole along self axial indent back to the outer end wall of photosensitive part along self.Blind hole has continuous hole wall at the force block axial cross section.The quantity of blind hole is four.On the force block axial cross section, four blind holes are symmetrical distribution with respect to the radial center of force block.
Aforementioned photosensitive drums, on its force block axial cross section, with respect to the position of blind hole along the radially contiguous force block radial center of force block, blind hole along force block radially the position of contiguous force block outer cylindrical wall along the circumferencial direction of force block towards the outside bulging of blind hole.On the force block axial cross section, with respect to the position of blind hole along the radially contiguous force block radial center of force block, the circumferencial direction along force block narrows towards blind hole inside blind hole between stage casing that force block directly makes progress.
Forbidden cause photosensitive drums with laser printer between the effectively problem of transfer of torque because of its force block with the contraposition of laser printer driving head at existing photosensitive drums, the present invention is provided with the blind hole of indent in the force block outer end wall of photosensitive drums drive disk assembly.Under this make, driving gear on the laser printer driving head is when meshing with blind hole, laterally or directly making progress of photosensitive drums drive disk assembly, the position of driving gear will be subjected to the restriction of the equidirectional outer wall of blind hole, make driving gear accurately insert in the blind hole, avoid the radial center of laser printer driving head and force block mutual dislocation to occur, guarantee that laser printer driving head and the radial center of force block are on the same axis, and then the assurance photosensitive drums is with transfer of torque effectively between the laser printer.And, blind hole is configured to the structural feature that narrows towards the inside of blind hole along the circumferencial direction of force block between the stage casing that force block directly makes progress, the result causes blind hole between the narrowed width of stage casing on the force block circumferencial direction that force block directly makes progress, so, after the driving gear on the laser printer driving head is inserting blind hole, driving gear just directly is limited between two walls that blind hole narrows down at the mobile space on the force block circumferencial direction, this has just reduced the move about gap of driving gear before forming contact with blind pore wall on the force block circumferencial direction, and then just can form contacting between driving gear and the blind pore wall after driving gear inserts blind hole rapidly, thereby the moment of torsion that more effectively driving gear is transmitted passes to force block.
Description of drawings
Fig. 1 has laser printer course of work synoptic diagram now.
Fig. 2 has laser printer photosensitive drums skeleton view one now.
Fig. 3 has laser printer photosensitive drums skeleton view two now.
Fig. 4 has laser printer photosensitive drums skeleton view three now.
Fig. 5 laser printer photosensitive drums of the present invention skeleton view.
Fig. 6 a, b have laser printer driving head skeleton view one, two now.
Fig. 7 photosensitive drums of the present invention is with existing laser printer driving head docking operation skeleton view.
Embodiment
Describe photosensitive drums of the present invention in detail below in conjunction with accompanying drawing.
Fig. 5,7, the skeleton view that shows photosensitive drums of the present invention and dock with existing laser printer driving head from different perspective view respectively.
The main make of laser printer photosensitive drums of the present invention and the prior art of near field are basic identical, those skilled in the art can consult the correlation technique data of near field prior art and in conjunction with the introduction of instructions background technology part to know the essential structure situation of laser printer photosensitive drums of the present invention.Given this, the Reference numeral of related member will continue to continue to use the Reference numeral of instructions background technology part identical components of the present invention in the description of laser printer photosensitive drums embodiment of the present invention.In addition, according to the present invention is directed to existing photosensitive drums with the effective problem of transfer of torque between the laser printer, propose the original intention of suitable solution, applicant just laser printer photosensitive drums of the present invention relates to its structure that guarantees that photosensitive drums obtains to stablize rotary driving force and partly carries out the emphasis description.
Referring to Fig. 5, the formation of photosensitive drums 101 comprises photosensitive part 114 and drive disk assembly 115.
Photosensitive part 114 is the hollow cylinders that adopt the aluminium preparation, namely with aluminum barrel as its basic building block.Be coated with the photographic layer of photochromics preparation at the external cylindrical surface of aluminum barrel.
Drive disk assembly 115 is component parts of photosensitive drums 101, and its structural feature is rendered as right cylinder substantially, and it is plugged in the inner chamber of the axial end of aluminum barrel regularly.The external cylindrical surface of drive disk assembly 115 is provided with driven wheel 116.Driven wheel 116 can pass to developer roll 105 parts such as grade (consulting Fig. 1) to the rotary driving force that drive disk assembly 115 obtains.Axially be provided with the cylindrical force block 117 of its outward appearance back to an end of photosensitive part 114 at drive disk assembly 115 along self.The axis of force block 117 overlaps with the axis of drive disk assembly 115.
Force block 117 along self axially on the outer end wall 117-1 of photosensitive part 114, be provided with along the blind hole 121 of force block 117 axial indents.Blind hole 121 does not connect force block 117 at force block 117 on axially, and it is only along the inside that axially extend into force block 117 from outer end wall 117-1 of force block 117.On the xsect axial perpendicular to force block 117, the hole wall that surrounds blind hole 121 is in the uninterrupted state that connects of continuing.On the xsect axial perpendicular to force block 117, radially be close to the position of force block 117 radial center along force block 117 with respect to blind hole 121, blind hole 121 is the outside bulging along the circumferencial direction of force block 117 towards blind hole 121 along the position of radially contiguous force block 117 outer cylindrical wall of force block 117, forms two bulging mouths 122.On the xsect axial perpendicular to force block 117, radially be close to the position of force block 117 radial center along force block 117 with respect to blind hole 121, narrow towards the inside of blind hole 121 along the circumferencial direction of force block 117 in the stage casing that blind hole 121 makes progress between force block 117 footpath, forms neck 123.The quantity of blind hole 121 is four.On the xsect axial perpendicular to force block 117, four blind holes 121 are symmetrical distribution with respect to the radial center of force block 117.
Referring to Fig. 7, and in conjunction with Fig. 5,6a, b, when being assembled to photosensitive drums 101 in the laser printer, four driving gears 120 on the laser printer driving head 119 will insert respectively in the blind hole corresponding with it 121.Insert in the process of blind hole 121 at driving gear 120, because blind hole 121 makes progress in drive disk assembly 115 footpaths back to the restriction of the outer wall of drive disk assembly 115 radial center, four driving gears 120 insertion blind holes 121 can upwards not form in the footpath of drive disk assembly 115 afterwards and move, thereby the radial center of assurance laser printer driving head 119 and photosensitive drums force block 117 is on the same axis.
The narrowed width of neck 123 on force block 117 circumferencial directions in addition, is set in blind hole 121 after the neck 123.Under this structural feature, after driving gear 120 inserts blind hole 121, driving gear 120 just directly is limited between two walls of neck 123 at the mobile space on force block 117 circumferencial directions, and then reduced the move about gap of driving gear 120 before forming contact with one of two walls of neck 123 on force block 117 circumferencial directions, thereby guarantee driving gear 120 insert blind holes 121 backs since the promotions of driving head 119 Stimulated Light printers drive driving gear 120 rapidly formation its with the contacting of one of two walls of neck 123, the rotary driving force that laser printer is produced effectively passes to force block 117, impels photosensitive drums 101 rotations.

Claims (2)

1. laser printer photosensitive drums, comprise photosensitive part and drive disk assembly, described drive disk assembly is fixed in described photosensitive part along a side of self length direction, the end of described drive disk assembly along described photosensitive part length direction back to described photosensitive part is provided with cylindrical force block, it is characterized in that, described force block axially is provided with blind hole along self axial indent back to the outer end wall of described photosensitive part along self, described blind hole has continuous hole wall at described force block axial cross section, the quantity of described blind hole is four, and four described blind holes are symmetrical distribution with respect to the radial center of described force block on described force block axial cross section.
2. according to the described photosensitive drums of claim 1, it is characterized in that, on described force block axial cross section, described blind hole along the position of the radially contiguous described force block outer cylindrical wall of described force block with respect to described blind hole along described force block radially the position of contiguous described force block radial center along the circumferencial direction of described force block towards the outside bulging of described blind hole, described blind hole radially narrows towards described blind hole inside along the circumferencial direction of described force block at the position of contiguous described force block radial center along described force block with respect to described blind hole between stage casing that described force block directly makes progress.
CN201310261346.2A 2013-06-26 2013-06-26 Light sensitive drum for laser printer Active CN103309195B (en)

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Application Number Priority Date Filing Date Title
CN201310261346.2A CN103309195B (en) 2013-06-26 2013-06-26 Light sensitive drum for laser printer
PCT/CN2014/079899 WO2014206206A1 (en) 2013-06-26 2014-06-16 Photosensitive drum for laser printer

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CN201310261346.2A CN103309195B (en) 2013-06-26 2013-06-26 Light sensitive drum for laser printer

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014206206A1 (en) * 2013-06-26 2014-12-31 珠海天威飞马打印耗材有限公司 Photosensitive drum for laser printer

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CN203299516U (en) * 2013-06-26 2013-11-20 珠海天威飞马打印耗材有限公司 Photosensitive drum for laser printer

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US5940657A (en) * 1996-03-05 1999-08-17 Canon Kabushiki Kaisha Developing cartridge
JP3337916B2 (en) * 1996-07-04 2002-10-28 キヤノン株式会社 Process cartridge, electrophotographic image forming apparatus and bearing guide parts
JP3382474B2 (en) * 1996-09-30 2003-03-04 キヤノン株式会社 Process cartridge, electrophotographic image forming apparatus, and method of incorporating cleaning roller
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CN203299516U (en) * 2013-06-26 2013-11-20 珠海天威飞马打印耗材有限公司 Photosensitive drum for laser printer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014206206A1 (en) * 2013-06-26 2014-12-31 珠海天威飞马打印耗材有限公司 Photosensitive drum for laser printer

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CN103309195B (en) 2015-12-23
WO2014206206A1 (en) 2014-12-31

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