CN217879991U - Laser printer handles box and removes smear structure - Google Patents

Abstract

The utility model discloses a laser printer handles box and removes smear structure, including setting up powder storehouse, developer roll in the selenium drum casing and sealing the powder doctor-bar, its characterized in that: and in each developing period, the rest magnetic carbon powder adsorbed on the surface of the developing roller after the developing of the developing roller is finished is scraped by the sealing powder scraping blade and then is extruded and scraped by the elastic body, and then is transferred into the powder bin. Therefore, the problem of easy powder leakage is solved, and the residual magnetic carbon powder on the surface of the developing roller is uniformly distributed by extruding and scraping the elastic body.

Description

Laser printer handles box and removes smear structure

Technical Field

The utility model relates to a laser printer, especially a laser printer handles box and removes smear structure.

Background

This device is the contact development, and this developer roll structure includes aluminum pipe and middle magnetic core and outer rubber, developer roll and sensitization drum contact and be greater than magnetic field force through electric field force and make the carbon powder adsorbed in electrostatic latent image district, and the carbon powder is the magnetism carbon powder, and takes charge through the scraper before the formation of image, because when starting, the developer roll can adsorb the carbon powder and idle running, can be rubbed many times by the scraper at this in-process, therefore the carbon powder is electrified highly. However, in the process of participating in development, not all the toner on the developing roller is adsorbed to participate in development, only the toner in the region corresponding to the electrostatic latent image region (region a for short) is adsorbed to the photosensitive drum to participate in development, and after the development is completed, the developing roller rotates into the toner hopper to supplement the toner, because only the toner in the region a is reduced, the region a can be supplemented with new toner, and the toner is charged through the scraper, but the electric quantity of the newly supplemented toner is lower than that of the residual toner. If the corresponding area of the electrostatic latent image area developed next on the developing roller is the area C and the area C is composed of the area a and the area B (and the voltage added to the electrostatic latent image area is the same), but the density of the toner adsorbed to the area a corresponding to the electrostatic latent image area is different from the density of the toner adsorbed to the area B corresponding to the electrostatic latent image area, so that two patterns with different color shades are formed on the printing paper in the area a and the area B, so that the pattern of the area a is hidden from the expected pattern of the area C, (if normal, the density of the toner adsorbed to the area a corresponding to the electrostatic latent image area is the same as the density of the toner adsorbed to the area B corresponding to the electrostatic latent image area, so that the colors of the patterns formed corresponding to the area a and the area B are the same, and the area a and the area B correspond to the pattern of the area C as a whole), because the color shades are different, the image developed last time is hidden from the image developed this time (i.e. smear), and the printing effect is poor.

Of course, the above-mentioned problem sometimes occurs not only at the time of starting up but also in the subsequent printing process, so that a new structure needs to be designed to eliminate the above-mentioned problem, thereby ensuring the printing quality.

Therefore, the applicant designs a toner cartridge smear removing structure (patent number: 2019205675497) to solve the problems, but the structure has the defect that the porous elastomer is made of sponge, the sponge is easy to age, harden and lose elasticity, so that the expected smear removing effect cannot be achieved after aging, and the service life is short.

Therefore, the present application designs a new structure of toner cartridge for removing smear (patent No. 2020214129517) to solve the above problems, but the above structure has a defect that since the porous sponge is fixed on the toner sealing scraper, the surface of the porous sponge is originally rough due to the porosity, and then the porous sponge is pressed by the toner sealing scraper and the developing roller, the contact area of the porous sponge and the developing roller is large, the friction force between the porous sponge and the developing roller is also large, so that the torque born by the developing roller is large, and the rotationally connected part of the developing roller is easy to wear.

And both above-mentioned two are sponge and developer roll contact in fact, therefore the sponge not only will play the effect of strickleing off the carbon dust and still play the effect of sealing off the powder, though the powder in powder storehouse can be fine sealed not reveal, but receive the influence of sponge self material, the carbon dust is piled up easily in the crossing triangle-shaped region of sponge and developer roll in the scraping sweep process of sponge, piles up too many back carbon dust and can inevitable and follow and escape between sponge and developer roll.

Therefore, the application designs a smear removing structure of a processing box of a laser printer aiming at the problems.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides a laser printer processing box removes smear structure.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a laser printer handles box and removes smear structure, is including setting up powder storehouse, developer roll and sealing the powder doctor-bar in the selenium drum casing, its characterized in that: and in each developing period, the rest magnetic carbon powder adsorbed on the surface of the developing roller after the developing of the developing roller is finished is scraped by a powder sealing scraper and then is extruded and scraped by the elastomer and then is transferred into a powder bin.

The porous elastomer is in the shape of a square strip.

The porous elastic body is a sponge strip made of sponge.

The utility model has the advantages that: the utility model discloses set up the elastomer of porose form in the selenium drum casing and strickle off remaining carbon dust, and still remain and seal the powder doctor-bar, scrape through the extrusion of elastomer and sweep the magnetic carbon dust that makes the developer roll surperficial surplus evenly distributed, thereby also can evenly mend new magnetic carbon dust on the developer roll surface at follow-up, thereby can not form the uneven distribution of new powder on the developer roll surface, therefore the problem of smear has also been eliminated, and the elastomer of this structure and developer roll surface contact's pressure only rely on the elastic force of self to provide, therefore can not make developer roll surface friction too big lead to the moment of torsion big, even if the carbon dust can follow and escape between sponge and developer roll occasionally, also can seal and can not waft outside the selenium drum through sealing the powder doctor-bar.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

Advantages and features of the present disclosure and methods of practicing the same will be clarified by the following embodiments described with reference to the accompanying drawings. This disclosure may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Furthermore, the present disclosure is to be limited only by the scope of the claims.

The shapes, sizes, proportions, angles, and numbers disclosed in the drawings for describing embodiments of the present disclosure are merely examples, and thus the present disclosure is not limited to the details shown. Like reference numerals refer to like elements throughout the specification. In the following description, when a detailed description of a related known function or configuration is determined to unnecessarily obscure the focus of the present disclosure, the detailed description will be omitted. In the case of using "including", "having", and "including" described in this specification, other components may be added unless "only" is used. Unless indicated to the contrary, singular terms may include the plural.

In explaining the elements, although not explicitly described, the elements are understood to include error ranges.

In describing the positional relationship, for example, when the positional relationship is described as "on 8230 \8230;," on 8230;, "\82308230;," "on 8230;, \8230; below" and \8230; "adjacent," one or more portions may be disposed between two other portions unless "immediately" or "directly" is used.

When describing temporal relationships, for example, when the temporal sequence is described as "at 8230; \8230post," "then," "next," and "at 8230; \8230pre," non-consecutive cases may be included unless "just" or "directly" is used.

It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present disclosure.

As will be well understood by those skilled in the art, the features of the different embodiments of the present disclosure may be partially or fully coupled or combined with each other and may cooperate with each other and be technically driven in various ways. Embodiments of the present disclosure may be performed independently of each other, or may be performed together in an interdependent relationship.

Referring to fig. 1, the utility model discloses a laser printer handles box and removes smear structure, including setting up powder storehouse 1 in the selenium drum casing, developer roll 2 and sealing powder doctor-bar 3, developer roll 2 top is sensitization drum 6, the opposite side of developer roll 2 is metal scraper 7, it is that plastics material is used for sealing the powder to seal powder doctor-bar 3, therefore the edge of the bottom surface of sealing powder doctor-bar 3 has the contact with developer roll 22, be convenient for like this to seal the powder, it is more rectangular to seal powder doctor-bar 3, and one side is pasted on the selenium drum casing, the edge of opposite side has the contact with developer roll 2, above-mentioned principle and structure all are prior art, therefore do not detail, be equipped with in the selenium drum casing can with the porous elastomer 5 of the magnetic carbon powder 4 contact of developer roll 2 surface adsorption, and in each development cycle, developer roll 2 development completion back developer roll-over to the residual magnetic carbon powder 4 scraping after the scraping of developer roll-over to the extrusion of elastomer 5 again and sweep the back powder storehouse 1 again. The elastic body 5 is preferably a sponge, is preferably a long square sheet in shape, can be made into a round strip, is convenient to cut and adhere, is fixed on the inner wall surface of the selenium drum shell in an adhering mode, and can be freely adjusted in contact area and contact pressure between the elastic body 5 and the developing roller 2 by changing the shape of the elastic body 5, such as changing the thickness or changing the width and the like.

The detailed description is given above on the smear removing structure of the processing box of the laser printer provided by the embodiment of the present invention, and the specific examples are applied herein to explain the principle and the implementation of the present invention, and the description of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

Claims (3)

1. The utility model provides a laser printer handles box and removes smear structure, is including setting up powder storehouse, developer roll and sealing the powder doctor-bar in the selenium drum casing, its characterized in that: and in each developing period, the rest magnetic carbon powder adsorbed on the surface of the developing roller after the developing of the developing roller is finished is scraped by the sealing powder scraping blade and then is extruded and scraped by the elastic body, and then is transferred into the powder bin.

2. The smear removing structure of a laser printer process cartridge according to claim 1, wherein: the porous elastomer is in the shape of a square strip.

3. The smear removing structure of a laser printer process cartridge according to claim 1, wherein: the porous elastic body is a sponge strip made of sponge.

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