CN201041614Y - Powder making knife - Google Patents
Powder making knife Download PDFInfo
- Publication number
- CN201041614Y CN201041614Y CNU2007201196077U CN200720119607U CN201041614Y CN 201041614 Y CN201041614 Y CN 201041614Y CN U2007201196077 U CNU2007201196077 U CN U2007201196077U CN 200720119607 U CN200720119607 U CN 200720119607U CN 201041614 Y CN201041614 Y CN 201041614Y
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- CN
- China
- Prior art keywords
- sheet metal
- powder delivery
- circular arc
- delivery cutter
- printer
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- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses a carbon powder outlet knife which comprises a bracket. A sheet metal that can uniformly scrape carbon powder is arranged on the bracket, and a convex circular arc is arranged at the position where the sheet metal is contacted with the carbon powder. In the optimal embodiment, the semidiameter of the convex circular arc is 0.2 millimeters to 0.4 millimeters; in the optimal embodiment, the sheet metal is of a stainless steel sheet, and notches are arranged at both ends of the sheet metal. The convex circular arc is arranged at the contacting position of the lower end of the sheet metal of the carbon powder outlet knife of the utility model and the carbon powder, so as to ensure that the intensity and the rigidity of the sheet metal are better, simultaneously, the convex circular arc on the folded edge of the sheet metal can be contacted with the carbon powder in line contact, the powder scraping effect is good, and the printing quality of the printer is improved.
Description
[technical field]
The utility model relates to the printing technique field, relates in particular to the powder delivery cutter in the laser printer.
[background technology]
Printer is a kind of common office appliance, utilizes printer, people can handle official business literal output, the output of multimedia making effect or image print output etc.According to the difference of output effect, printer mainly is divided into laser printer, ink-jet printer, stylus printer and other specific function printers.
Laser printing technology appears at the sixties at first, combines laser technology and computer technology, and laser printer is for the stylus printer printer, and not only quality is good, output speed is fast, and does not have noise, has therefore obtained very soon applying.
Powder delivery cutter in the laser printer, the carbon dust that is used for being transported to developing roll is controlled at the thickness of a regulation, thereby controls the use amount of carbon dust; The powder delivery cutter also is used for charging to carbon dust in addition.The performance of powder delivery cutter is to the print quality important influence of laser printer.
The steel disc of the powder delivery cutter of prior art use at present is to be fixed on the support by welding manner, its steel disc structure is to be bent into 90 degree with the developing roll position contacting, scrape the powder charging by bending part, yet, the steel disc rigidity of this structure is relatively poor, is easy to depart from its original position when being subjected to certain pressure; And it many times all is the face contact with contacting of carbon dust, scrapes the powder weak effect.
[summary of the invention]
The technical problems to be solved in the utility model provides a kind of powder delivery cutter, and it is effective that this powder delivery cutter is scraped powder, and good rigidity.
For solving the problems of the technologies described above, the technical scheme that the utility model proposes is:
A kind of powder delivery cutter comprises support, but is set with the sheet metal of drawout carbon dust on the described support, and described sheet metal lower end and carbon dust position contacting have an evagination circular arc.
Wherein, the radius of described evagination circular arc is 0.2 millimeter～2 millimeters.
Preferably, the radius of described evagination circular arc is 0.2 millimeter～0.4 millimeter.
Preferably, described sheet metal is a stainless steel substrates.
Preferably, described sheet metal two ends are provided with breach.
Preferably, the angle α of described sheet metal and support stationary plane is 160 degree～180 degree.
Wherein, the connected mode between described support and the described sheet metal is welding.
Wherein, described support is provided with the pressing plate that sheet metal can be compressed, and the screw that plays fixation is through support, pressing plate and stainless steel substrates.
By technique scheme as can be seen, the sheet metal lower end of the utility model powder delivery cutter and carbon dust position contacting have an evagination circular arc, make that intensity, the rigidity of sheet metal are better, evagination circular arc on its sheet metal flanging can become line to contact with carbon dust simultaneously, scrape the powder better effects if, improved the print quality of printer.
[description of drawings]
Fig. 1 is the front view of the utility model powder delivery cutter;
Fig. 2 is the side view of the utility model powder delivery cutter;
Fig. 3 is the front view of stainless steel substrates in the utility model powder delivery cutter;
Fig. 4 is the partial side view of stainless steel substrates in the utility model powder delivery cutter.
[embodiment]
The utility model improves the powder delivery cutter in the laser printer, and for the effect of powder delivery cutter in the printer prints process is described better, and powder delivery cutter performance is to the influence of printer print quality, and at first the principle of work to laser printer is introduced.Laser printer is a kind of output device that laser scanner technique and electronic display technology are integrated mutually, and according to its difference of printing type, its printing function also has certain difference, but its principle of work is basic identical.The course of work below in conjunction with printer describes in detail to its principle of work.
After printer is carried out print command, application program in the computing machine will be carried out pre-service to wanting printed contents, convert print command or the print control language that printer can be discerned to by the laser printer driver again, after in a single day this command signal delivers to inner high frequency drive circuit, just can control the Kai Heguan of generating laser, thereby produce the dot matrix laser beam, and inject the acoustooptic deflection modulator through catoptron; Simultaneously, the scale-of-two picture and text dot matrix content that sends from computing machine, be transferred to character generation unit from interface, form the binary pulse signal of required font, the pulse signal that is produced by synchronizer is controlled several high frequency oscillators again, add on the acousto-optic modulator through frequency synthesizer and power amplifier then, the laser beam of being injected by catoptron is modulated.Light beam after the modulation is injected multiple surface rotating mirror, is incident upon on photoconductor drum (toner cartridge) surface after the wide-angle focusing mirror focuses on light beam again, makes angular velocity scanning become linear velocity scanning, finishes whole scanning process.
Through after the pre-service, printer prints and comprises the following course of work:
1, charging.When printing beginning, the sensitization toner cartridge at first carries out initialization, promptly fills negative charge equably with on the outside surface of drum.And the sensitization toner cartridge of laser printer is a photosensitive device, and the function that is subjected to photoconduction logical is arranged.The optical coating on this toner cartridge surface can be filled a certain amount of electric charge with by charging roller automatically before carrying out scan exposure.
Generally the photographic layer that is coated with on the outside surface of sensitization toner cartridge is the good insulation performance body, and interior station aluminum barrel ground connection, if be with negative charge on the outside surface of drum, these electric charges can rest on top motionless.Yet be subjected to rayed in case drum is gone up certain part, this part just becomes conductor, and its surface is gone up the electric charge that distributes and will be drained into ground by conductor, and not still existed by the electric charge of illumination part.
2, exposure.After charging finished, laser generator produced laser beam.In case when laser beam was strafed on the toner cartridge surface by latticed form, the luminous point that is scanned will be because of exposure conducting automatically, electric charge is just by conducting electricity base snap-out release (degree of releasing is determined by exposure intensity) over the ground like this.And the luminous point of not accepting exposure still keeps original electric charge size, so just can form the electrostatic latent image that current potential differs at sensitization toner cartridge face.
3. video picture.Video picture claims again to develop, and its process is to allow on the sensitization toner cartridge sensitization partly be stained with ink powder, obtains visible picture point.The ink powder that is rasterized roller absorption is by powder delivery cutter drawout, and captures electronics.Make developing roll adhere to even, the electronegative ink powder of last layer.On developing roll, also have an AC bias, break away from the attraction of developing roll electrostatic field in order to help ink powder.Sensitization toner cartridge and developing roll gap ratio are less, after certain some sensitization on the sensitization toner cartridge, the current potential of this point reduces, in sensitization toner cartridge rotation process, after this point and developing roll meet, the sensitization toner cartridge that ink powder is just had a positive electricity back pressure attracts and skips their gap, is attached on the sensitization toner cartridge.At this moment the latent image dots on the drum has just become visual picture point, has produced ink powder image, thereby has finished developing process.
4. transfer printing.The sensitization toner cartridge that is rasterized will be rotated further, and when the drum face passed through transfer roll, the printer paper that places in advance also was sent between sensitization toner cartridge and the transfer roll simultaneously, and the point of video picture at this moment will be transferred on the printer paper.Because transfer roll has more powerful positive charge, be attached to the back side of printer paper.These positive charges with on the sensitization toner cartridge electronegative ink powder tightly attracted, thereby picture point is transferred on the printer paper.In addition, producing on X eliminator has negative charge, in order to reduce the attractive force between sensitization toner cartridge and the printer paper, makes printer paper be easy to break away from the sensitization toner cartridge and is not held.
5. photographic fixing.Image will further carry out photographic fixing by fuser after the sensitization toner cartridge is transferred on the printer paper.Fuser is made up of photographic fixing topping roll and photographic fixing bottom roll, topping roll is equipped with a photographic fixing lamp, when printer paper passes through here, the heat that the photographic fixing lamp sends is with the ink powder fusion, pressure between two rolls forces the ink powder after the fusion to enter in the fiber of printer paper again, image is fixed, the record result that formation can forever be preserved.And then will be equipped with and be transferred to high temperature fixing device place on the printer paper of ink powder image and heat, pressurize, so that allow ink powder be melted in the printer paper, the print What of appointment will be presented on the printer paper like this, so far overall print process just is through with.
From the course of work of above-mentioned printer as can be seen, powder delivery cutter performance to the influence of printer print quality mainly in the process of developing.In this process, the powder delivery cutter is used for the carbon dust cutter drawout with developing roll absorption, and carbon dust is charged.
Below with reference to Fig. 1, Fig. 2 and Fig. 4, in conjunction with specific embodiments, the powder delivery knife structure in the utility model is described in detail.
In embodiment of the present utility model, the powder delivery cutter comprises support 1, and by being welded as the stainless steel substrates 2 of support 1 assembling, stainless steel substrates 2 lower ends and carbon dust position contacting have an evagination circular arc, and the arc radius span is 0.1 millimeter～2 millimeters.Wherein, according to test of many times result and practical experience, the more excellent value of the radius of above-mentioned evagination circular arc is 0.3 millimeter, but 0.1 millimeter of this radius value deviation in actual the manufacturing, so the more excellent value of the radius of evagination circular arc is between 0.2 millimeter～0.4 millimeter.
Need to prove; using stainless steel only is a preferred version of the present utility model as the material of sheet metal, obviously, can also adopt the material of other metals as sheet metal; such as adopting the metal copper sheet to replace stainless steel substrates 2, also belong to the scope of the utility model protection.
Also need to prove, stainless steel substrates 2 is connected with support 1, the mode that is not limited only to weld, being connected of stainless steel substrates 2 and support 1 can also utilize screw and the fixing method of pressing plate to realize: utilize pressing plate that steel disc is pressed on the support, by screw pressing plate, steel disc and support are fixed together.
The sheet metal lower end of the utility model powder delivery cutter and carbon dust position contacting have an evagination circular arc, make that intensity, the rigidity of sheet metal are better, simultaneously the evagination circular arc on its sheet metal flanging can become line to contact with carbon dust, and it is better to scrape the powder effect, has improved the print quality of printer.
In a preferred embodiment, as shown in Figure 3, the two ends of stainless steel substrates 2 are provided with breach.
In a preferred embodiment, between the stationary plane of described stainless steel substrates 4 and support, have an angle α, this angle α is traditionally arranged to be the obtuse angle.Through test findings and practical experience repeatedly, the more excellent span of α is that 160 degree are to 180 degree.
The above embodiment has only expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (8)
1. a powder delivery cutter comprises support, it is characterized in that: but be set with the sheet metal of drawout carbon dust on the described support, and described sheet metal lower end and carbon dust position contacting have an evagination circular arc.
2. powder delivery cutter as claimed in claim 1 is characterized in that: the radius of described evagination circular arc is 0.1 millimeter～2 millimeters.
3. powder delivery cutter as claimed in claim 2 is characterized in that: the radius of described evagination circular arc is 0.2 millimeter～0.4 millimeter.
4. powder delivery cutter as claimed in claim 1 is characterized in that: described sheet metal is a stainless steel substrates.
5. powder delivery cutter as claimed in claim 1 is characterized in that: described sheet metal two ends are provided with breach.
6. powder delivery cutter as claimed in claim 1 is characterized in that: the angle α of described sheet metal and support stationary plane is 160 degree～180 degree.
7. as each described powder delivery cutter in the claim 1 to 6, it is characterized in that: the connected mode between described support and the described sheet metal is welding.
8. as each described powder delivery cutter in the claim 1 to 6: it is characterized in that described support is provided with the pressing plate that sheet metal can be compressed, the screw that plays fixation is through support, pressing plate and stainless steel substrates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201196077U CN201041614Y (en) | 2007-04-19 | 2007-04-19 | Powder making knife |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201196077U CN201041614Y (en) | 2007-04-19 | 2007-04-19 | Powder making knife |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201041614Y true CN201041614Y (en) | 2008-03-26 |
Family
ID=39253325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201196077U Expired - Lifetime CN201041614Y (en) | 2007-04-19 | 2007-04-19 | Powder making knife |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201041614Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104516245A (en) * | 2013-09-30 | 2015-04-15 | 兄弟工业株式会社 | Developing device, blade assembly, and developing device manufacturing method |
| CN104646665B (en) * | 2015-02-01 | 2016-05-18 | 北京工业大学 | Ceramic blade |
-
2007
- 2007-04-19 CN CNU2007201196077U patent/CN201041614Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104516245A (en) * | 2013-09-30 | 2015-04-15 | 兄弟工业株式会社 | Developing device, blade assembly, and developing device manufacturing method |
| CN104646665B (en) * | 2015-02-01 | 2016-05-18 | 北京工业大学 | Ceramic blade |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN LEPUTAI TECHNOLOGY CO., LTD. Free format text: FORMER NAME: SHENZHEN LEPUTAI OFFICE EQUIPMENT PARTS CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 1-2, building 518173, building A, six deep pit bamboo industry zone, Henggang, Longgang, Guangdong, Shenzhen, China Patentee after: Shenzhen Leputai Technology Co., Ltd. Address before: 1-2, building 518173, building A, six deep pit bamboo industry zone, Henggang, Longgang, Guangdong, Shenzhen, China Patentee before: Shenzhen Leputai Office Equipment Parts Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080326 |