CN201229470Y

CN201229470Y - Laser imaging device

Info

Publication number: CN201229470Y
Application number: CNU2008200932078U
Authority: CN
Inventors: 周小平
Original assignee: 周小平; 兰光明
Current assignee: Shenzhen Zhanxinlong Technology Co., Ltd.
Priority date: 2008-04-03
Filing date: 2008-04-03
Publication date: 2009-04-29
Anticipated expiration: 2018-04-03

Abstract

The utility model provides a laser imaging device, which comprises a powder chamber, a powder feeding roll, a developing roll, a powder outlet knife and a photosensitive drum core. The device is characterized in that a conductive cleaning drawing template which can contact with the external surface of the photosensitive drum core is arranged on the front position of the photosensitive drum core. Since the conductive cleaning drawing template is adopted, the device can integrate a charging roll and the cleaning drawing template in the prior art into a whole, thereby the troubles of manufacturing the charging roll are saved, the pollution is reduced, the materials are saved, the phenomenon of bottom ash which is caused by the insufficient charging or the insufficient discharging of the photosensitive drum core due to the consumption of voltages which is caused by the damages and the unclean of the conductive coating of a charging roll conducting layer during the operation process can not occur and the effects to the printing quality also can not occur.

Description

A kind of laser image forming apparatus

[technical field]

The utility model relates to the laser image field shaping technique, relates in particular to the improvement of the toner cartridge part of equipment such as laser printer, laser facsimile, laser copier, laser blueprint instrument.

[background technology]

The principle of work of laser imaging is that the print signal that at first computer transmitted is converted into pulse signal and is sent to laser instrument, by the charging rod to photosensitive drums wicking surface uniform charging, laser instrument penetrates the electric charge that laser is offset drum core epigraph position, then the carbon dust on the magnetic roller is adsorbed onto on the bulging core by electrostatic principle, carry out transfer printing by transfer roll again, since on the transfer roll with voltage be higher than voltage on the bulging core, carbon dust on the bulging core is pulled on the paper, heating infiltrates in the fiber of paper carbon dust fusing after the pressurization, finishes whole imaging process.Its molding structure as shown in Figure 1, comprise powder feeder 2, developer roll 3, powder delivery cutter 4, photosensitive drums core 7, charging roller 5, cleaning doctor 8 etc., after one time image was finished, cleaning doctor 8 must be wiped the remaining carbon dust that a width of cloth pattern on the photosensitive drums core 7 carries over off, deposits in the waste powder hopper.Charging roller 5 is again to photosensitive drums core 7 surface chargings then, removes the rest potential after Polaroid, just can carry out the image work second time then.At present existing charging roller 5 structures comprise the roller core of doing matrix with the metallic conduction material, be coated with conductive adhesive on the described roller core, conductive adhesive is provided with the rubber elastic layer that has certain thickness, contains the conductive rubber formation of charcoal micro mist, and conductive rubber elastic layer outside surface is coated with conductive coating.Above-mentioned charging roller in the mill, technology is comparatively complicated, and serious environment pollution.Simultaneously, the consumption of voltage can cause photosensitive drums charge and discharge deficiency in charging roller conductive coating damaged or unclean and the operation, causes bottom ash or print quality is exerted an influence.Cleaning doctor generally is that a bonding transparent polyurethane sheet material combines on sheet material, adopting polyurethane material mainly is that it has higher anti-wear performance, and can not injure photosensitive drums, and this cleaning doctor because being insulating material, its polyurethane material does not have electric conductivity.

[utility model content]

Technical problem to be solved in the utility model is the defective that overcomes above-mentioned prior art, and a kind of laser image forming apparatus is provided, and its conductive cleaning balde both can clean photosensitive drums, can the charging of photosensitive drums wicking surface be cut down finished cost again.

For reaching above-mentioned utility model purpose, the utility model proposes following technical scheme:

A kind of laser image forming apparatus comprises powder storehouse, powder feeding roller, developer roll, powder delivery cutter, photosensitive drums core, it is characterized in that: in described photosensitive drums core anterior locations, but be provided with a conductive cleaning blade that can touch with the photosensitive drums core outer surface.

But described conductive cleaning blade is made of bed plate and blade, and wherein said bed plate adopts metal material, but blade adopts the conductive polyurethane material to make.

As can be seen from the above technical solutions, the utility model is owing to adopt conductive cleaning balde, charging roller in the prior art and cleaning doctor can be united two into one, can save the trouble that charging roller is made, reduced pollution, saved material, calculate with the quantity 200,015,000 that the annual toner cartridge in the whole world uses, can save the material cost and the processing cost of 200,015,000 charging rollers, calculate by average every charging roller 130 grams, can reduce by 3250 tons of solid refuses every year, economize on the use of funds 3,700,015,000 yuan, and this quantity increases progressively by 15% every year.

[description of drawings]

Fig. 1 is a prior art laser image forming apparatus structural representation;

Fig. 2 is the utility model apparatus structure synoptic diagram;

Fig. 3 is the utility model cleaning balde structural representation.

Among the figure:

1-powder storehouse; 2-powder feeding roller;

3-developer roll; 4-powder delivery cutter;

5-charging roller; 6-commentaries on classics shadow roller;

7-photosensitive drums core; 8-cleaning doctor;

8a-cleaning balde; 81-bed plate;

82-blade.

[embodiment]

As shown in Figure 2, the utility model comprises: the container that can hold carbon dust---powder storehouse 1, place powder storehouse 1 interior powder feeding roller 2 and developer roll 3, described developer roll 3 outside surfaces are provided with the powder delivery cutter 4 that touches with it, side before described developer roll 3, be provided with a tangent with it photosensitive drums core 7, this photosensitive drums core 7 is tangent with commentaries on classics shadow roller 6 simultaneously, in described photosensitive drums core 7 anterior locations, but be provided with a conductive cleaning blade 8a, described cleaning balde 8a can touch with photosensitive drums core 7 outside surfaces, by cleaning balde 8a is connected with power supply, when power connection, it is charged to photosensitive drums core 7 as conductor, remove the rest potential after Polaroid, just can reach the effect of serving as charging roller; During outage, it can be used as insulator the remaining carbon dust that a width of cloth pattern on the photosensitive drums core 7 carries over is wiped off, realizes the function of cleaning doctor.Like this, charging roller in the prior art and cleaning doctor can be united two into one, can save the trouble that charging roller is made, thereby reduce pollution, save material cost.

As shown in Figure 3, described cleaning balde 8a is made of bed plate 81 and blade 82, and wherein said bed plate 81 can adopt metal material, but blade 82 adopts the conductive polyurethane material, both can use cementing agent to be adhered on the bed plate 81, and can make it have electric action as conductive material again.The polyurethane material of described blade 82 is that the polyvalent alcohol of degree of unsaturation and polyisocyanates and ionic conduction type give the composition that agent is mixed and made into conductive polyurethane, the polyurethane that above-mentioned composition is made 1.0～5.0mm thickness with known method is scraped sheet material, and its specific insulation reaches 10 ⁵～10 ⁹Ohm. centimetre.

In the above-mentioned material, used polyvalent alcohol comprises polymer polyatomic alcohols such as polyether polyol, PPOX ethoxylated polyhydric alcohol, PolyTHF polyvalent alcohol, pla-pcl polyvalent alcohol, polyester polyol; Described polyisocyanates is one or more in high molecular polymer MDI, toluene diisocyanate IDI, hexamethylene diisocyanate HDI and the modified mixture thereof, and the gene NCO of polyvalent alcohol and polyisocyanates and the mol ratio NCO/OH scope of hydroxyl OH are between 0.9～2.0.

It is 100:5～20 that urethane resin that described polyvalent alcohol and the reaction of one or more multi isocyanate crosslinkings form and ionic conduction type give the agent mixing match.

Described ionic conduction type gives agent and can be metal yin, yang ion conductive material, the nonionic conductive material, wherein the anionic metal conductive material can be selected alkyl sulfonate, sulfate, phosphoric acid derivatives, higher fatty acid salt, carboxylate etc. for use, the metal cation conductive material is selected amine salt, quaternary ammonium salt, alkylaminoacid salts etc. for use, the nonionic conductive material is selected macrogol ester or ethers for use, polyol fatty acid ester, fatty acid alkanol amides, fatty amine ethoxy ether etc.

But the cleaning balde 8a that adopts above-mentioned conductive polyurethane material to make, owing to can save charging roller, so can save rapidoprint greatly, reduce material cost, simultaneously, can avoid adopting charging roller and bring loaded down with trivial details technology and problem of environmental pollution in the processing, also not exist damaged or uncleanly cause the consumption of voltage in the operation can cause the not enough influence that causes bottom ash or print quality is produced of photosensitive drums core charge and discharge owing to the charging roller conductive coating.

The above embodiment has only expressed a kind of 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

1, a kind of laser image forming apparatus comprises powder storehouse, powder feeding roller, developer roll, powder delivery cutter, photosensitive drums core, it is characterized in that: in described photosensitive drums core anterior locations, but be provided with a conductive cleaning blade that can touch with the photosensitive drums core outer surface.

2, laser image forming apparatus according to claim 1 is characterized in that: but described conductive cleaning blade constitute by bed plate and blade, wherein said bed plate adopts metal material, but blade adopts the conductive polyurethane material to make.