CN1161482A - Process unit for producing photoes - Google Patents
Process unit for producing photoes Download PDFInfo
- Publication number
- CN1161482A CN1161482A CN 97100828 CN97100828A CN1161482A CN 1161482 A CN1161482 A CN 1161482A CN 97100828 CN97100828 CN 97100828 CN 97100828 A CN97100828 A CN 97100828A CN 1161482 A CN1161482 A CN 1161482A
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- China
- Prior art keywords
- developing apparatus
- drum
- producing
- development roller
- photoes
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Abstract
A photograph edition photocopy process unit is disclosed which has a drum unit, a developer, a developing roller and a supporting shaft. A spring laid between the developer and the drum unit to grant rotating moment around the supporting shaft to the developer so that the developing roller can be energized toward the photosensitive drum. The developer is provided with an input gear to transmit driving force to the developing roller and a printer is provided with an output gear to drive the input gear. The direction of the pressure angle to drive the output gear is faced to the supporting shaft.
Description
The present invention relates to a kind of being removably mounted on such as the process unit for producing photoes (process unit) on the picture producing machine of Xerox or laser printer one class.
Known a kind of process unit for producing photoes, it comprises drum parts, a developing apparatus, development roller and a bolster (fulcrum shaft).These drum parts have a photoconductor drum, and electrostatic latent image generates on this photoconductor drum by exposure device.This developing apparatus has the developing apparatus housing of depositing developer, and should be placed in this developing apparatus housing by the development roller, and developer is delivered to the drum parts.This bolster (fulcrum shaft) is supporting this developing apparatus, makes this developing apparatus can pivot No. 66662/93, Japanese Laid-Open Patent Application (for example, can referring to) with respect to these drum parts.This process unit for producing photoes is installed on the picture producing machine, can dismantle.In the process unit for producing photoes of in this Japanese Laid-Open Patent Application, announcing, bolster is placed on the drum upper parts of components, like this, the gravity that acts on the developing apparatus makes this bolster produce a flywheel moment, promotes this development roller towards this photoconductor drum motion.Between this developing apparatus and drum parts, put into a spring.This spring is placed to and makes it can promote this developing apparatus along the direction that this flywheel moment reduces.
This developing apparatus is provided with the input gear that driving force is passed to the development roller, and image forming machine then is provided with the output gear that driving force is passed to this input gear.The direction of the transmission pressure angle of this output gear is designed to produce a moment that promotes this development roller towards this photoconductor drum motion.
Above-mentioned input gear and output gear only are placed on a side of this developing apparatus and picture producing machine.Like this, when output gear driving moment is passed to input during gear, acting on duty factor on that side of this developing apparatus, to act on the load of its opposite side big, and therefore, it is inhomogeneous that this development roller and this photoconductor drum compress the power that contacts.In addition, in common process unit for producing photoes, output gear is designed to produce a moment that promotes this development roller towards this photoconductor drum motion for the direction of the transmission pressure angle of input gear.Like this, act on driving torque (along the power of above-mentioned pressure angle direction) acute variation on this developing apparatus along with the variation of the amount that leaves the developer in the developing apparatus housing in.As a result, compress contact force significant change between development roller and the photoconductor drum, and can cause the imaging instability along with the variation of the amount of developer.
The objective of the invention is to provide a kind of process unit for producing photoes of novelty, this device can make because development roller that the variation of driving torque causes and the variation that compresses contact force between the photoconductor drum reduce to minimum.
Specifically, the invention provides a kind of process unit for producing photoes that is removably mounted on the picture producing machine, this device comprises drum parts, developing apparatus, development roller and bolster device.These drum parts have a photoconductor drum, and electrostatic latent image promptly generates on this drum.This developing apparatus has the housing of receiving photographic developer, and should be placed in this developing apparatus housing by the development roller, is used for developer is delivered to this photoconductor drum.The bolster device is used to support this developing apparatus, and this developing apparatus can be rotated around fulcrum with respect to these drum parts.Wherein,
Between this developing apparatus and this drum parts, put into spring assembly,, promote the development roller towards this photoconductor drum motion so that will pass to developing apparatus around the flywheel moment that this bolster device rotates;
This developing apparatus is provided with the input gear that driving force is passed to the development roller, this picture producing machine has the output gear that driving force is passed to the input gear, and this output gear is to the direction of transmission pressure angle of this input gear, or with this side in the opposite direction towards this bolster device.
As mentioned above,, be located at output gear on the picture producing machine for the direction of the transmission pressure angle that is located at the input gear on the developing apparatus according to the present invention, or with this side in the opposite direction towards the bolster device.Like this, the driving torque that acts on this developing apparatus can not produce one around the rotating moment of this bolster device to this developing apparatus, and therefore, this driving torque can not change along with the variation of leaving the developer level in the developing apparatus housing in.So no matter how the amount of developer changes, driving torque does not influence the contact force that compresses between development roller and the photoconductor drum, therefore can realize stable imaging.
Brief description of drawings
Fig. 1 is a front view, and it schematically shows the printer of the embodiment that process unit for producing photoes constructed in accordance has been installed;
Fig. 2 is a schematic front view (FV), and it is with the part of the process unit for producing photoes of the mode presentation graphs 1 cut open of part;
Fig. 3 is the schematic elevational view of process unit for producing photoes shown in Figure 1, the drive unit of the revolving meber of its expression developing apparatus.
Describe the embodiment of process unit for producing photoes constructed in accordance in detail referring now to accompanying drawing.
Fig. 1 schematically shows a printer 4, and an embodiment of process unit for producing photoes constructed in accordance 2 wherein has been installed.Printer 4 among this embodiment is small-sized laser printer at a slow speed, and the printing equipment that can be used as word processor etc. uses.Printer 4 comprises body 6 and cover 10, and cover 10 can rotate around the axle 8 of body 6.Process unit for producing photoes 2 is installed on the body 6, can dismantle.
As shown in Figure 2, this process unit for producing photoes 2 has drum parts 12 and a developing apparatus 16.This developing apparatus 16 is bearing on these drum parts 12 by bolster 14, can rotate around fulcrum.Drum parts 12 have two metal sidewall 18 and a transverse frame (not shown).These two metal sidewall are spaced-apart on the direction of front to the back side of figure, and this transverse frame then is placed between these two sidewalls 18, and they are linked together.In the bottom of each sidewall 18, make to have the supporting arm 20 that on same direction, extends parallel to each other.Corresponding two bearings 22 that are equipped with on 22, two supporting arms 20 of a bearing at the front end of each supporting arm 20 should be installed on the common axis.Make upwardly extending ring-shaped handle 23 parallel to each other on the top of each sidewall 18.Though do not show, the present invention's regulation, each handle 23 is made of plastics, and is installed on the sidewall 18.
In addition, these drum parts 12 have a photoconductor drum 24, and paper dirt is removed brush 26 and corona charging discharger 28.This photoconductor drum 24 has a photographic layer, and it is done on the circumferential surface of this photoconductor drum.This photoconductor drum 24 is bearing between these corresponding two sidewalls 18 and rotates.This paper dirt is removed brush 26 and corona charging discharger 28 is installed between two corresponding sidewalls 18.Top and the left side of photoconductor drum 24 is opened wide.
Developing apparatus 16 has the housing 30 of the developer that storage is made up of toner on the one-component, and development roller 32 adds material roller 34 and stirring apparatus 36.This development roller 32 is placed in the developing apparatus housing 30, is used to deposit developer, and stored developer is sent on the electrostatic latent image on the photoconductor drum 24.This adds the circumferential surface that material roller 34 is used for developer is sent to development roller 32, and stirring apparatus 36 is used to stir developer.Development roller 32 is by the conduction on the external peripheral surface that is fixed on revolving shaft 76 (see figure 3)s, firm synthetic rubber, and for example chemglaze constitutes.This revolving shaft 76 is bearing between two sidewalls of developing apparatus housing 30 and rotates.Add material roller 34 by the polyfoam on the external peripheral surface that is fixed on revolving shaft 62 (see figure 3)s, for example silicone foam plastics or urethane foams constitute.This revolving shaft 62 is bearing between two sidewalls of developing apparatus housing 30 and rotates.Adding material roller 34 contacts with this development roller 32 under pressure.Stirring apparatus 36 is made of the stirring parts that is fixed on revolving shaft 66 (see figure 3)s.This revolving shaft 66 is bearing between two sidewalls of this developing apparatus housing 30 and rotates.
Between two corresponding sidewalls 18 of two sidewalls of developing apparatus housing 30 and drum parts 12, put into the spring assembly of forming by volute spring 40.Each root volute spring 40 applies a flywheel moment of rotating around bolster 14 for developing apparatus 16, to promote development roller 32 towards photoconductor drum 24 motions.This action can make development roller 32 compress with this photoconductor drum 24 and contact.
The process unit for producing photoes of making like that as mentioned above is removably mounted on the printer 4, as shown in Figure 1.In detail, in Fig. 1, the cover 10 of printer 4 can rotate around axle 8 counter-clockwise direction, thereby makes the top of printer 4 become external open mode.Then, this process unit for producing photoes 2 is packed into from above in the printer 4.In printer 4, be provided with and the drum parts 12 of process unit for producing photoes 2 can be placed in the locational locating device (not shown) that is predetermined.With the cover 10 of printer 4 clockwise direction, rotate around axle 8, thereby the top of printer 4 is closed again according to Fig. 1.In cover 10 inside, with the handle 23 corresponding positions of drum parts 12 on be provided with the briquetting (not shown).When cover 10 was closed, this briquetting was pressed in the top of corresponding handle 23 with predetermined pressure, and drum parts 12 are remained in the printer 4.Each handle 23 is made by elastoplast.Therefore, when being depressed by the briquetting of cover 10, each handle 23 is made elastic deformation downwards.As a result, these drum parts 12 are securely held in the printer 4.
As shown in Figure 2, when being installed in drum parts 12 in the printer 4, laser aid 40 and contactless transfer rollers 42 in the placed around of photoconductor drum 24.This laser aid 40 is positioned at the downstream of corona charging discharger 28, and this contactless transfer rollers 42 then is positioned at the downstream of development roller 32.Laser aid 40 is placed on the bottom of printer 4.Left end is provided with one and holds the paper feed tray 44 that shifts paper above cover 10.Placing a paper feeding roller 46 in the downstream of paper feed tray 44, and on the position relative, placing a friction pad 48 that is used to separate paper with paper feeding roller 46.In the downstream of photoconductor drum 24 and transfer rollers 42, placing two photographic fixing rollers 50.Place two in the downstream of two photographic fixing rollers 50 and discharging roller 52.Placing a discharge paper tray 54 in two downstreams of discharging roller 52.Be arranged on each corresponding roller and the photoconductor drum 24 that is arranged on process unit for producing photoes 2 one sides of printer 4 one sides, drive, turn round according to the direction shown in the arrow by the drive unit (not shown).
Referring now to Fig. 3 revolving meber is described, comprises the drive unit of the development roller 32 in the developing apparatus 16 that is located at process unit for producing photoes 2.Side (face side of Fig. 3) at printer 4 is installed with an output gear 60.Output gear 60, with the motor (not shown) that is placed in the printer 4, promptly drive source connects on drive connection.Input gear 64 and another gear 65 are fixed on an end of the revolving shaft 62 that adds material roller 34.In Fig. 3, the diameter of this another gear 65 is identical with input gear 64, and is placed on this input gear 64 rear ends, therefore, cannot see in the drawings.Yet, for convenience of description for the purpose of, in Fig. 3, represent this another gear with (65).Position relation between input gear 64 and the output gear 60 decides like this, and promptly as illustrating, when being installed in process unit for producing photoes 2 in the printer 4, these input gear 64 loose grounds and output gear 60 mesh.Fig. 3 represents above-mentioned installation situation.
Gear 68 is fixed on an end of the revolving shaft 66 of stirring apparatus 36.Gear 68 and another above-mentioned gear 65 engagements.On a sidewall of developing apparatus housing 30, be provided with revolving shaft 70, and neutral gear 72 and 74 is fixed on this revolving shaft 70.Neutral gear 72 and another above-mentioned gear 65 engagements.Gear 78 is fixed on an end of the revolving shaft 76 of development roller 32, gear 78 and neutral gear 74 engagements.
When motor drives output gear 60 and rotates according to direction shown in Fig. 3 arrow, gear 64 (65), 68,72,74 and 78 are driven revolution according to direction shown in the arrow.As a result, add material roller 34, stirring apparatus 36 and development roller 32 are driven revolution according to direction shown in Fig. 2 arrow.
As implied above, when this process unit for producing photoes 2 is installed on the printer 4, be located at output gear 60 and input gear 64 engagements that are located on the developing apparatus 16 on the printer 4, under this engagement, it is very important making under the direction of transmission pressure angle of 60 pairs of output gears input gear 64 towards bolster 14.In the present embodiment, the direction F of this transmission pressure angle is towards the direction of the axle center C of bolster 14.
In the printer of making like that as mentioned above 4, when the connection of printer switch (not shown), in the time of printing, drive unit drives photoconductor drum 24 revolutions, turns round with advancing to drive this output gear 60.Corona charging discharger 28 charges to specific polarity basically equably with these photoconductor drum 24 lip-deep photographic layers.Then, laser shines the photographic layer surface of this photoconductor drum 24 according to the type information of sending from laser aid 40.This laser aid 40 is exactly the exposure device that forms electrostatic latent image.Like this, just formed electrostatic latent image.The electrostatic latent image that forms on the photographic layer surface of this photoconductor drum 24 develops to the toner image by the development roller 32 of developing apparatus 16.Be contained in the transfer paper in the paper feed tray 44,, send one by one by the effect of paper feeding roller 46 and friction pad 48.The transfer paper of sending is sent in the slot between photoconductor drum 24 and the transfer rollers 42 by guide channel 56, makes the last toner image transfer that sticks on this photoconductor drum 24 to this transfer paper surface of sending into.The transfer paper that has the last toner image that is transferred up is sent in two photographic fixing rollers 50 by guide channel 58.The transfer paper that has the toner image carries out hot photographic fixing by two photographic fixing rollers 50, discharges roller 52 by two then and is expelled in the discharge paper tray 54.
As previously mentioned, the rotary driving force that is located at the output gear 60 in the printer 4 is sent on the input gear 64 that is located in the developing apparatus 16.Direction acts on the developing apparatus 16 facing to the driving torque of the direction F of the transmission pressure angle of 60 pairs of inputs of output gear gear 64, and provides a driving torque (running moment of torsion) around bolster 14.On the other hand, after printer 4 had approximately been printed the transfer paper that is predetermined quantity, the colouring dosage in the developing apparatus housing 30 changed to empty state from full state.When adopting common device, the above-mentioned driving torque that acts on the developing apparatus 16 changes significantly along with reducing of dosage of colouring, and therefore, the contact force that compresses between development roller 32 and the photoconductor drum 24 changes widely.
On the contrary, in the present invention, therefore the direction F of the transmission pressure angle of 60 pairs of inputs of output gear gear 64, for developing apparatus 16, can not produce around the driving torque of bolster 14 towards bolster 14.Like this, in the present invention, no matter how the amount of developer changes, and above-mentioned driving torque can not influence the contact force that compresses between roller 32 and the photoconductor drum 24.So, can realize stable imaging.When as in the situation of present embodiment, the direction F of the transmission pressure angle of 60 pairs of this output gears input gear 64 is during towards the axle center C of bolster 14, the variation that can keep above-mentioned driving torque, thereby just compress the minimum that is changed to of contact force.
Embodiment according to process unit for producing photoes of the present invention has been described above.Yet, should be appreciated that the present invention only is confined to this embodiment, can carry out various changes and transformation, and can not depart from the spirit and scope of the present invention.For example, in this embodiment, the direction F of the transmission pressure angle of 60 pairs of inputs of output gear gear 64 is towards bolster 14.Yet, under the situation in the opposite direction, in other words, promptly when the direction opposite with the direction F of this transmission pressure angle be during towards this bolster 14, also can obtain same effect and effect.Other embodiment have also been comprised among the present invention at this situation.In addition, the present invention is applicable to that also as prior art, bolster 14 is placed on the process unit for producing photoes of upper position.
According to process unit for producing photoes constructed in accordance, the variation that compresses contact force between, development roller that driving torque on the developing apparatus causes owing to acting on and the photoconductor drum can be remained minimum, therefore can realize stable imaging.
Claims (1)
1. process unit for producing photoes (processunit) that is removably mounted in the picture producing machine, described process unit for producing photoes comprise drum parts, developing apparatus, development roller and bolster device; These drum parts have a photoconductor drum, and electrostatic latent image promptly generates on this drum; This developing apparatus has the housing of receiving photographic developer; Should then be placed in the described developing apparatus housing by the development roller, be used for developer is flowed to described photoconductor drum; This bolster device is used to support described developing apparatus, and developing apparatus can be rotated around fulcrum with respect to described drum parts; It is characterized by:
Between described developing apparatus and described drum parts, put into spring assembly,, promote described development roller and move towards described photoconductor drum so that will be added on the described developing apparatus around the rotating torque that described bolster device rotates,
Described developing apparatus has the input gear that driving force is passed to described development roller, described picture producing machine then has the output gear that driving force is passed to described input gear, and, described output gear is to the direction of the transmission pressure angle of described input gear, perhaps with described side in the opposite direction towards described bolster device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97100828 CN1161482A (en) | 1996-03-11 | 1997-03-11 | Process unit for producing photoes |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP052815/96 | 1996-03-11 | ||
| CN 97100828 CN1161482A (en) | 1996-03-11 | 1997-03-11 | Process unit for producing photoes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1161482A true CN1161482A (en) | 1997-10-08 |
Family
ID=5165337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97100828 Pending CN1161482A (en) | 1996-03-11 | 1997-03-11 | Process unit for producing photoes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1161482A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100385346C (en) * | 2003-07-14 | 2008-04-30 | 三星电子株式会社 | Developing unit |
| WO2016045597A1 (en) * | 2014-09-25 | 2016-03-31 | 珠海天威飞马打印耗材有限公司 | Processing cartridge |
-
1997
- 1997-03-11 CN CN 97100828 patent/CN1161482A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100385346C (en) * | 2003-07-14 | 2008-04-30 | 三星电子株式会社 | Developing unit |
| WO2016045597A1 (en) * | 2014-09-25 | 2016-03-31 | 珠海天威飞马打印耗材有限公司 | Processing cartridge |
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| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |