Printing drum surface identification partition structure

Abstract

The utility model relates to the technical field of printing drums, and discloses a printing drum surface identification partition structure, which comprises a cylinder frame, a magnetic core is sleeved on the surface of the cylinder frame, a magnetic sleeve is sleeved on the outer edge of the magnetic core, an end cover is sleeved on the surface of the cylinder frame at the end part of the magnetic sleeve, and a conductive mechanism is arranged in the cylinder frame; the magnetic core is divided into a plurality of sections which are sleeved on the cylinder frame, the plurality of sections of magnetic cores on the cylinder frame are combined to form an A section identification area, a B section identification area and a C section identification area, and the magnetic cores contained in the A section identification area, the B section identification area and the C section identification area are independently conductive with the conductive mechanism. The surface identification partition structure of the printing drum solves the problems that in the prior art, a magnetic roller can uniformly adsorb carbon powder and then rotationally deliver the carbon powder to a drum core, when paper is small, the attachment area of the carbon powder on the magnetic roller is large, the photosensitive edge of the drum core cannot inevitably adsorb the carbon powder outside the range, the carbon powder is not uniformly distributed on the paper, the local carbon powder is too much, and the efficiency is high. And the printing quality is influenced.

Description

TECHNICAL FIELD

[0001] The utility model relates to printing drum technical field, concretely is a kind of printing drum surface identification zoning structure. BACKGROUND

[0002] Printing drum is a kind of structure for printer, also known as selenium drum, when printing drum prints, need to utilize magnetic roller to attract and arrange carbon powder in powder bin, then deliver to drum core, so that drum core can attract carbon powder according to the pattern formed by laser and print on paper, to complete printing, wherein, according to the paper of printing, the structure in printing drum needs to be distinguished according to the range of paper.

[0003] Magnetic roller in printing drum plays a crucial role in printing process, its main role is to charge carbon powder, so that it can be adsorbed on the surface of drum core, to form the final printing image, when printing different paper, in prior art, magnetic roller will uniformly attract carbon powder, then rotate and deliver to drum core, when paper is small, carbon powder adhering area on magnetic roller is large, the photosensitive edge of drum core will inevitably attract carbon powder outside the range, which will cause uneven distribution of carbon powder on paper, and local carbon powder is too much, affecting printing quality. SUMMARY

[0004] In view of the deficiencies of prior art, the utility model provides a kind of printing drum surface identification zoning structure, solve the problem mentioned in the above background.

[0005] The utility model provides the following technical scheme: a kind of printing drum surface identification zoning structure, comprising: cylinder frame, the surface of the cylinder frame is equipped with magnetic core, the outer edge of the magnetic core is equipped with magnetic sleeve, the surface of the cylinder frame at the end of magnetic sleeve is equipped with end cover, the inside of the cylinder frame is provided with electric conduction mechanism;

[0006] The magnetic core is divided into multiple sections and is sleeved on the cylinder frame, the multiple magnetic cores on the cylinder frame are combined to form three identification areas of A section, B section and C section, and the magnetic cores in the A section, B section and C section are independently conductive with the electric conduction mechanism.

[0007] Preferably, the size of the A section, B section and C section corresponds to the size of the printing paper.

[0008] Preferably, the electric conduction mechanism includes a first zone power core, the outer edge of the first zone power core is sleeved with a first insulating cylinder, the outer edge of the first insulating cylinder is sleeved with a second zone power core, the outer edge of the second zone power core is sleeved with a second insulating cylinder, the outer edge of the second insulating cylinder is sleeved with a third zone power core, and the third zone power core is installed in the inside of the cylinder frame.

[0009] Preferably, the first zone through the core is connected with a first conductive wire in the middle, the first conductive wire is respectively penetrated through the first insulating cylinder, the second zone through the core, the second insulating cylinder, the third zone through the core and the cylinder frame and is electrically connected with the magnetic core contained in the A section, the second zone through the core is connected with a second conductive wire, the second conductive wire is respectively penetrated through the second insulating cylinder, the third zone through the core and the cylinder frame and is electrically connected with the magnetic core contained in the B section excluding the A section, the third zone through the core is connected with a third conductive wire, and the third conductive wire is penetrated through the cylinder frame and is electrically connected with the magnetic core contained in the C section excluding the A section and the B section.

[0010] Preferably, one end of the second zone through the core and the third zone through the core is arranged in a ring shape, and the outer edge of the ring shape protrudes from the surface of the cylinder frame, and the ring shape structures of the second zone through the core and the third zone through the core are isolated by the first insulating cylinder and the second insulating cylinder.

[0011] Preferably, the cylinder frame comprises a core cylinder, a plurality of groups of partition rings are integrally arranged on the surface of the core cylinder, a wire passing hole is formed on the core cylinder between every two adjacent partition rings, and the core cylinder and the partition rings are made of insulating materials.

[0012] Preferably, the magnetic sleeve comprises an aluminum sleeve, a rubber layer is arranged on the inner side of the aluminum sleeve, and a graphite layer is sprayed on the outer edge of the aluminum sleeve.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1、The printing drum surface identification partition structure sets up the cylinder frame, separates the magnetic cores on the cylinder frame to form three identification areas of A section, B section and C section, when printing paper of different sizes such as A3 and A4, respectively conveys the current through the conductive mechanism, only activates the identification area magnetism corresponding to the size of the paper, and then makes the magnetic roller only adsorb the carbon powder in the activated area, so that the carbon powder area attached to the surface of the magnetic roller corresponds to the size of the printing paper, thereby avoiding the case that the photosensitive edge of the drum core adsorbs the carbon powder beyond the range, increasing the uniform distribution rate of the carbon powder on the paper, avoiding the case that the local carbon powder is too much, and then improving the printing quality.

[0015] 2、The printing drum surface identification partition structure sets up the rubber layer in the magnetic sleeve and contacts the magnetic core, utilizes the rubber layer to reduce the interference of the external electronic to the magnetic core, provides certain protection effect, and simultaneously makes the isolation of the plurality of magnetic cores more perfect. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the overall structure schematic view of the utility model;

[0017] Figure 2 It is the cross section structure schematic view of the utility model;

[0018] Figure 3 For the utility model Figure 2 The enlarged structure schematic view of the middle I place;

[0019] Figure 4 For the utility model Figure 2 The enlarged structure schematic view of the middle II place;

[0020] Figure 5 The schematic view of the partition structure of the cylinder frame of the utility model;

[0021] Figure 6 The schematic view of the cylinder frame structure of the utility model;

[0022] Figure 7 The schematic view of the disassembly structure of the conductive mechanism of the utility model;

[0023] Figure 8 The schematic view of the cross section structure of the utility model.

[0024] In the drawing: 1, cylinder frame;11, core cylinder;12, spacer ring;13, wire hole;2, conductive mechanism;21, first zone electrically conductive core;22, first insulating cylinder;23, second zone electrically conductive core;24, second insulating cylinder;25, third zone electrically conductive core;26, first conductive wire;27, second conductive wire;28, third conductive wire;3, magnetic sleeve;31, aluminum sleeve;32, rubber layer;33, graphite layer;4, end cover;5, magnetic core. Specific implementation

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] Please refer to Figures 1-8 A printing drum surface identification partition structure, comprising: a cylinder frame 1, the surface of the cylinder frame 1 is sleeved with a magnetic core 5, the outer edge of the magnetic core 5 is sleeved with a magnetic sleeve 3, the surface of the end of the cylinder frame 1 located at the magnetic sleeve 3 is sleeved with an end cover 4, and the inside of the cylinder frame 1 is provided with a conductive mechanism 2.

[0027] The magnetic core 5 is sleeved on the cylinder frame 1 in multiple sections, and the multiple section magnetic cores 5 on the cylinder frame 1 are combined to form three identification areas of A section, B section and C section, and the magnetic cores 5 contained in the A section, B section and C section are independently conductive with the conductive mechanism 2.

[0028] The size of the A section, the B section and the C section corresponds to the size of the printing paper, and when printing paper of different sizes is used, the magnetic properties of the corresponding size partition are activated according to the size of the printing paper, so that the carbon powder attached to the magnetic roller just corresponds to the range of the paper.

[0029] The conductive mechanism 2 comprises a first zone energized core 21, the outer edge of the first zone energized core 21 is sleeved with a first insulating cylinder 22, the outer edge of the first insulating cylinder 22 is sleeved with a second zone energized core 23, the outer edge of the second zone energized core 23 is sleeved with a second insulating cylinder 24, the outer edge of the second insulating cylinder 24 is sleeved with a third zone energized core 25, and the third zone energized core 25 is installed in the inside of the cylinder frame 1. By setting the first insulating cylinder 22 and the second insulating cylinder 24, the current to the first zone energized core 21, the second zone energized core 23 and the third zone energized core 25 is blocked respectively, and then the magnetic properties in different partitions can be activated by using the current.

[0030] The middle part of the first zone energized core 21 is connected with a first conductive wire 26, the first conductive wire 26 penetrates through the first insulating cylinder 22, the second zone energized core 23, the second insulating cylinder 24, the third zone energized core 25 and the cylinder frame 1 respectively and is electrically connected with the magnetic core 5 contained in the A section, the second zone energized core 23 is connected with a second conductive wire 27, the second conductive wire 27 penetrates through the second insulating cylinder 24, the third zone energized core 25 and the cylinder frame 1 respectively and is electrically connected with the magnetic core 5 contained in the B section excluding the A section, the third zone energized core 25 is connected with a third conductive wire 28, the third conductive wire 28 penetrates through the cylinder frame 1 and is electrically connected with the magnetic core 5 contained in the C section excluding the A section and the B section, and the first zone energized core 21, the second zone energized core 23 and the third zone energized core 25 are independently connected with the magnetic core 5 in the corresponding area position by using the first conductive wire 26, the second conductive wire 27 and the third conductive wire 28 respectively. After independent energization, the effect of activating the magnetic properties of the corresponding area is completed.

[0031] One end of the second zone energized core 23 and the third zone energized core 25 is provided in a ring shape, and the outer edge of the ring shape protrudes from the surface of the cylinder frame 1, and the ring structure of the second zone energized core 23 and the third zone energized core 25 is isolated by the first insulating cylinder 22 and the second insulating cylinder 24. The outer edge of the ring structure of the second zone energized core 23 and the third zone energized core 25 is used as a contact to connect the external current, and when printing paper of different sizes is used, the current communication of the corresponding area can be completed by independent contact power supply.

[0032] The cylinder frame 1 comprises a core cylinder 11, a plurality of groups of partition rings 12 are integrally arranged on the surface of the core cylinder 11, a wire hole 13 is arranged on the core cylinder 11 between every two adjacent partition rings 12, the core cylinder 11 and the partition rings 12 are made of insulating material, the plurality of groups of partition rings 12 arranged on the core cylinder 11 are used as separators of each group of magnetic cores 5, so that the magnetic force of each group of magnetic cores 5 cannot spread to a far area, thereby avoiding the situation that the range of the carbon powder attached to the magnetic roller is large when a small area is activated.

[0033] The magnetic sleeve 3 comprises an aluminum sleeve 31, a rubber layer 32 is arranged on the inner side of the aluminum sleeve 31, and a graphite layer 33 is sprayed on the outer edge of the aluminum sleeve 31, the rubber layer 32 arranged in the magnetic sleeve 3 contacts the magnetic core 5, the rubber layer 32 reduces the interference of external electrons on the magnetic core 5 and provides a certain protection effect, so that the aluminum sleeve 31 does not directly contact the magnetic core 5.

[0034] Working principle, when the printing drum is used for paper printing, first, according to the size of the paper, the current of the magnetic roller range corresponding to the size of the paper is connected by the conductive mechanism 2, which can be divided into A section independent activation, B section activation, C section activation, wherein the A section partition is contained in the B section partition, the B section partition is contained in the C section partition, so that the carbon powder adsorbed by the magnetic roller is in the corresponding range of the paper, and the area of the carbon powder adsorbed by the magnetic roller is not much larger than the area of the paper.

[0035] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A print drum surface identification zoning structure, characterized by, The utility model relates to a kind of printing paper identification device, including: Cylinder frame (1), the surface of the cylinder frame (1) is sleeved with magnetic core (5), the outer edge of the magnetic core (5) is sleeved with magnetic sleeve (3), the surface of the cylinder frame (1) at the end of magnetic sleeve (3) is sleeved with end cover (4), the inside of the cylinder frame (1) is provided with electric conduction mechanism (2); The magnetic core (5) is divided into multiple sections and is sleeved on the cylinder frame (1), the multiple magnetic cores (5) on the cylinder frame (1) are combined to form three identification areas of A section, B section and C section, and the magnetic cores (5) contained in the A section, B section and C section are independently electrically conducted with the electric conduction mechanism (2).

2. A print drum surface identification zoning structure according to claim 1, wherein, The size of the A section, B section and C section corresponds to the size of the printing paper.

3. The print drum surface identification zoning structure of claim 1, wherein, The electric conduction mechanism (2) includes a first zone electrically conductive core (21), the outer edge of the first zone electrically conductive core (21) is sleeved with a first insulating cylinder (22), the outer edge of the first insulating cylinder (22) is sleeved with a second zone electrically conductive core (23), the outer edge of the second zone electrically conductive core (23) is sleeved with a second insulating cylinder (24), the outer edge of the second insulating cylinder (24) is sleeved with a third zone electrically conductive core (25), and the third zone electrically conductive core (25) is installed in the inside of the cylinder frame (1).

4. A print drum surface identification zoning structure according to claim 3, wherein, The middle part of the first zone electrically conductive core (21) is connected with a first electrically conductive wire (26), the first electrically conductive wire (26) penetrates through the first insulating cylinder (22), the second zone electrically conductive core (23), the second insulating cylinder (24), the third zone electrically conductive core (25) and the cylinder frame (1) respectively and is electrically connected with the magnetic core (5) contained in the A section, the second zone electrically conductive core (23) is connected with a second electrically conductive wire (27), the second electrically conductive wire (27) penetrates through the second insulating cylinder (24), the third zone electrically conductive core (25) and the cylinder frame (1) respectively and is electrically connected with the magnetic core (5) contained in the B section excluding the A section, and the third zone electrically conductive core (25) is connected with a third electrically conductive wire (28), the third electrically conductive wire (28) penetrates through the cylinder frame (1) and is electrically connected with the magnetic core (5) contained in the C section excluding the A section and the B section.

5. A print drum surface identification zoning structure according to claim 3, wherein, One end of the second zone electrically conductive core (23) and the third zone electrically conductive core (25) is provided in a ring shape, and the outer edge of the ring shape protrudes from the surface of the cylinder frame (1), and the ring structure of the second zone electrically conductive core (23) and the third zone electrically conductive core (25) is isolated by the first insulating cylinder (22) and the second insulating cylinder (24).

6. The print drum surface identification zoning structure of claim 1, wherein, The cylinder frame (1) includes a core cylinder (11), a plurality of groups of partition rings (12) are integrally arranged on the surface of the core cylinder (11), a wire hole (13) is formed in the core cylinder (11) between every two adjacent partition rings (12), and the core cylinder (11) and the partition ring (12) are both made of insulating material.

7. The print drum surface identification zoning structure of claim 1 wherein, The magnetic sleeve (3) includes an aluminum sleeve (31), a rubber layer (32) is arranged on the inner side of the aluminum sleeve (31), and a graphite layer (33) is sprayed on the outer edge of the aluminum sleeve (31).

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