Paperless laser printing selenium drum detection device

Abstract

The utility model discloses a paperless laser printing selenium drum detection device, which comprises a printing device, a selenium drum and an inner transfer printing roller are arranged in the printing device, a photosensitive drum is arranged in the selenium drum, and the paperless laser printing selenium drum detection device is characterized by further comprising a test board and a belt transmission device arranged on the test board, the printing device is arranged on the test board, a plurality of through holes are formed in a shell of the printing device, the belt enters and exits the printing device through the through holes, the belt can penetrate through a gap between the photosensitive drum and the inner transfer printing roller when entering the printing device, and the photosensitive drum can transfer characters or patterns formed by carbon powder to the belt. And a powder scraping knife for scraping the carbon powder on the belt is arranged on the test board. Therefore, the belt can be recycled, paper is saved, time is saved, the working intensity of testers is reduced, and efficiency is improved.

Description

Technical Field

[0001] This utility model relates to a testing system for printing consumables, and in particular to a paperless laser printer drum testing device. Background Technology

[0002] Toner cartridges in printers need to be tested before being sold to the market to ensure that there are no defective products.

[0003] Previously, a specific model of toner cartridge was used to test the corresponding model of printer. After installing the toner cartridge into the printer, the printer was turned on and printed at least one page of document to check whether the toner cartridge was working properly and whether the printed document met the requirements.

[0004] The problem with the above process is:

[0005] 1. Testing each toner cartridge requires printing more paper than needed, resulting in paper waste.

[0006] Not environmentally friendly;

[0007] 2. We will set up continuous printing of many pages on the computer. This way, printing within the predetermined number of pages does not require computer operation. After each toner cartridge is tested, the paper in the paper tray needs to be pulled out to stop the printer and then the toner cartridge needs to be replaced. Then the paper is put back into the paper tray. When the printer detects that there is paper in it, it will start the preheating program and then continue printing. The above process requires pulling out and putting out paper and starting the preheating program, which is not only tedious for the testers but also takes a long time to test.

[0008] This application addresses the aforementioned issues by designing a paperless laser printing drum testing device. Utility Model Content

[0009] In order to overcome the shortcomings of the existing technology, this utility model provides a paperless laser printing drum detection device.

[0010] The technical solution adopted by this utility model to solve its technical problem is:

[0011] A paperless laser printing drum testing device includes a printing device, which contains a drum and an inner transfer roller. The drum contains a photosensitive drum. The device is characterized by further including a test platform and a belt drive mechanism mounted on the test platform. The belt drive mechanism includes a cyclically moving belt. The printing device is mounted on the test platform. The housing of the printing device has several through holes through which the belt enters and exits the printing device. After entering the printing device, the belt passes through the gap between the photosensitive drum and the inner transfer roller. The photosensitive drum can transfer text or graphics formed by toner onto the belt via the inner transfer roller. The test platform is equipped with a scraper blade for scraping toner off the belt.

[0012] The through holes include an upper left hole and a lower left hole on one side of the housing, and an upper right hole and a lower right hole on the other side of the housing. The belt includes a lower belt and an upper belt parallel to the lower belt. The lower belt passes through the lower left hole and the lower right hole, and the upper belt passes through the upper left hole and the upper right hole. The upper belt passes through the gap between the photosensitive drum and the inner transfer roller, and the photosensitive drum can transfer the text or graphics formed by toner onto the upper belt.

[0013] The test bench is equipped with an external transfer roller for charging the belt.

[0014] A collection box is located below the powder scraper.

[0015] The belt drive device includes a drive motor, a drive roller, and a driven roller. The drive roller and the driven roller are rotatably connected to the test bench, and the drive motor is connected to the drive roller to drive the drive roller to rotate. The belt is wound around the drive roller and the driven roller.

[0016] The drive motor is connected to the drive roller via a gear reduction structure.

[0017] The printing device or the test bench is equipped with a tension roller, and the upper or lower belt can be tensioned by the tension roller.

[0018] The lower left hole is the paper feed hole.

[0019] The belt drive device includes roller one, roller two, and roller motors that drive roller one and roller two to rotate respectively. The two ends of the belt are fixed on roller one and roller two respectively.

[0020] It also includes tension rollers.

[0021] The beneficial effects of this invention are as follows: This system uses a belt drive device outside the printing unit, replacing paper with a belt, and the belt passes through the gap between the photosensitive drum and the inner transfer roller like paper. This allows the toner on the photosensitive drum to be transferred to the belt to display the document. After the belt with the document displayed with toner comes out of the printing unit, it is inspected by the testing personnel, and then the toner on the belt is scraped clean with a toner scraper. Therefore, the belt can be reused, which not only saves paper but also saves time, reduces the workload of the testers, and improves efficiency. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a schematic diagram of the internal structure of the printing device, showing the principle of the belt passing through it.

[0024] Figure 2 This is a schematic diagram of the overall structure of the belt passing through the printing device.

[0025] Figure 3 This is a schematic diagram of the internal structure of the printing principle, where the upper band passes through the printing device;

[0026] Figure 4 This is a schematic diagram of the overall structure of the upper belt passing through the printing device;

[0027] Figure 5 This is a schematic diagram of the overall structure of the open belt passing through the printing device.

[0028] Figure 6 This is a three-dimensional schematic diagram of an open belt passing through a printing device. Detailed Implementation

[0029] The advantages and features of this disclosure, as well as its implementation methods, will be illustrated by the following embodiments described with reference to the accompanying drawings. However, this disclosure may 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 comprehensive and complete, and will fully convey the scope of this disclosure to those skilled in the art. Furthermore, this disclosure is limited only by the scope of the claims.

[0030] The shapes, dimensions, scales, angles, and numbers disclosed in the accompanying drawings used to describe embodiments of this disclosure are merely examples, and therefore this disclosure is not limited to the details shown. Throughout this specification, the same reference numerals refer to the same elements. In the following description, detailed descriptions of relevant known functions or configurations will be omitted where it is determined that such detailed descriptions would unnecessarily obscure the focus of this disclosure. Where the terms “comprising,” “having,” and “including” are used in this specification, additional components may be added unless “only” is used. Unless otherwise indicated, singular terms may include plural forms.

[0031] When interpreting components, even if not explicitly described, the components are understood to include a range of tolerances.

[0032] When describing positional relationships, such as "on," "above," "below," and "adjacent to," one or more parts may be arranged between two other parts unless "immediately following" or "directly" is used.

[0033] When describing temporal relationships, such as when time sequence is described as “after,” “following,” “next,” and “before,” discontinuous cases may be included unless “exactly” or “directly” is used.

[0034] It should 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 used only to distinguish one element from other elements. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element, without departing from the scope of this disclosure.

[0035] As will be fully understood by those skilled in the art, the features of the different embodiments of this disclosure may be coupled or combined with each other in part or in whole, and may cooperate with each other and be technically driven in various ways. The embodiments of this disclosure may be implemented independently of each other, or may be implemented together in an interdependent relationship.

[0036] Reference Figures 1 to 4 This utility model discloses a paperless laser printing drum testing device, including a printing device 1, a test platform 2, and a belt drive device mounted on the test platform 2. The printing device contains a drum 3 and an inner transfer roller 10. The drum 3 contains a photosensitive drum 13. The printing device 1 can be fixed to the test platform 2 by screws or other means. The belt drive device includes a cyclically moving belt. The printing device is screwed to the test platform. The housing of the printing device has several through holes 15. The belt enters and exits the printing device 1 through the through holes 15, and after entering the printing device 1, the belt can pass through the gap between the photosensitive drum 13 and the inner transfer roller 10. The photosensitive drum 13 can transfer text or graphics formed by toner onto the belt. Preferably, the belt in this application is made of PE film. When a blank belt enters through the corresponding through hole 15, the inner transfer roller 10 transfers the toner from the photosensitive drum 13 onto the belt. The toner is transferred to a belt, preferably white. The principle of toner transfer via the inner transfer roller 10 and photosensitive drum 13 is the same as before, only the belt is replaced with paper. The belt thickness is similar to that of paper, so the specific toner transfer principle will not be detailed. This belt acts like paper to carry the toner. The document formed by the toner on this section of the belt exits through the paper output hole, allowing the inspector to promptly check for clarity and printing defects. After inspection, the printer cover 4 is opened, stopping the printer. The belt stops, the drum 3 is replaced, the cover 4 is closed, and the printer resumes operation, with the belt continuing to rotate and printing on the next section of the belt. After document inspection, when the belt rotates to the toner position, the edge of the scraper blade 5 contacts the belt surface, scraping off the toner. To conserve toner, a collection box 6 is provided under the scraper blade 5, allowing the toner to fall into the collection box 6 for collection and reuse.

[0037] In this application, the printing device 1 is an existing printer purchased from outside. Of course, we will modify it. First, we will open through holes 15 on the housing of the printing device. There are four through holes 15. Specifically, the through holes 15 include an upper left hole and a lower left hole on one side of the housing, and an upper right hole and a lower right hole on the other side of the housing. Since the belt is in a cyclical motion, the belt includes a lower belt 11 and an upper belt 12 parallel to the lower belt 11. The lower belt 11 passes through the lower left hole and the lower right hole, and the upper belt 12 passes through the upper left hole and the upper right hole. The upper belt 12 passes through the gap between the photosensitive drum 13 and the inner transfer roller 10. The photosensitive drum 13 can transfer the text or graphics formed by toner onto the upper belt 12. Of course, in order to reduce the amount of processing, the lower left hole can directly use the paper inlet hole of the original equipment.

[0038] Of course, the above is just one design structure, such as Figure 3 and 4 As shown, in another design, we can also open a through hole 15 on the housing of the printing device, through which the upper belt 12 can enter and exit from the paper inlet and the through hole 15, while the lower belt 11 moves outside the printing device.

[0039] Of course, we can remove unnecessary components such as the paper feed rollers and upper and lower fuser rollers. Removing these components will avoid obstructing the movement path of the belt, as our belt is powered and can move continuously in a cycle, thus eliminating the need for paper feed rollers. Furthermore, to remove toner after inspection, there is no need to heat and fuse the upper and lower fuser rollers, and the control program needs to be modified. The belt can also be installed by disassembling the housing and removing components. If the belt installation is to be made easier, we can also use a method of installing a disconnected belt and then splicing it. All of the above can be achieved with existing technology, so we will not go into details.

[0040] The installation structure of the powder scraper 5 is also simple. Just set the knife holder 7 at the predetermined position on the test bench 2, and then stick the powder scraper 5 to the knife holder 7. The knife holder 7 can be made of relatively hard plastic, while the powder scraper 5 is made of a rectangular rubber plate with one edge in contact with the belt. Its length is slightly greater than the width of the belt. The knife holder 7 is fixed to the test bench 2 with screws.

[0041] As a further preferred structure, the test platform 2 is equipped with an external transfer roller 16 for charging the belt. Since the toner transferred to the belt is charged, and charged toner is not easily scraped off the belt, the external transfer roller 16 charges the belt with the same charge as the toner, and then the toner scraper 5 cleans it. The charging structure of the external transfer roller 16 is conventional, and transfer rollers are common components in the printing field; therefore, the specific structure is not detailed. Alternatively, this application can also omit the external transfer roller 16 and directly design the drive roller 8 as a rechargeable roller to achieve the dual functions of driving the belt rotation and charging the belt.

[0042] As shown in the figure, the belt drive device includes a drive motor (not shown in the figure), a drive roller 8, and a driven roller 9. The drive roller 8 is rotatably connected to the test bench 2 through a bearing seat. Of course, the application of bearing seats is common knowledge in the mechanical field, so the specific installation structure of the drive roller 8 will not be described in detail here. Because the drive roller 8 of this application has a low speed and low load, we can also use the method of the drive roller 8 cooperating with the shaft hole to achieve the rotatable connection. The structure of the drive roller 8 is also a conventional structure. The interior can be an iron core with an outer rubber layer or a plastic core with an outer rubber layer. Of course, in order to prevent the belt from running off-center, the rubber layer can be provided with an annular positioning groove, and the belt is stuck in the positioning groove. The structure of the driven roller 9 is the same as the structure of the drive roller 8, so it will not be described in detail.

[0043] The drive motor of this application can be a servo motor, which works at a predetermined speed. Therefore, the drive motor is connected to the active roller 8 to drive the active roller 8 to rotate. The belt is wound around the active roller 8 and the driven roller 9. Of course, in order to reduce costs, we can also use an ordinary motor. In order to reduce the speed, the drive motor is connected to the active roller 8 through a gear reduction structure. The gear reduction structure is also a conventional technology, so the specific structure is not described in detail.

[0044] As a preferred structure of this application, a tension roller (not shown in the figure) is provided inside the printing device or on the test bench. The upper belt 12 or the lower belt 11 can be tensioned by the tension roller. Because the internal structure of printing devices from different manufacturers is different, not all printing devices from all manufacturers can achieve parallel movement of the lower belt 11 and the upper belt 12. Therefore, we can provide a tension roller inside the printing device or on the test bench to change the movement path of the lower belt 11 or the upper belt 12, thereby avoiding obstacles from related components inside the printing device. The structure of the tension roller is a conventional structural design, so its specific structure and installation are not described in detail.

[0045] like Figure 5 and Figure 6As shown, in another embodiment of this application, the belt can be open-type. Specifically, the belt drive device includes a first roller 14, a second roller 15, and roller motors that drive the first roller 14 and the second roller 15 to rotate respectively. Both ends of the belt are fixed to the first roller 14 and the second roller 15 respectively. The length of the belt far exceeds the distance between the first roller 14 and the second roller 15. Initially, the excess belt is wound on the first roller 14, which is located on the inlet side of the printing device, and the second roller 15 is located on the outlet side of the printing device. During testing, the second roller 15 rotates under the drive of the roller motor and winds up the belt. Simultaneously, the belt is pulled to move, thus carrying out the text or graphics formed by the toner for inspection. After the inspection is completed, the toner is scraped off by the scraper blade 5. If the belt on roller 14 is empty, we will turn off the printing device, remove the drum, and then start the roller motor to drive roller 14 to reverse, thereby winding the belt back onto roller 14 and allowing the next round of testing to begin. The above structure is easier to manufacture and assemble. If the belt is looped, it will be more difficult to assemble. If the belt is disconnected and then reconnected, the reconnection process is also very demanding. Therefore, this embodiment directly adopts an open belt assembly, which is easier.

[0046] Furthermore, to facilitate powder scraping, a tensioning roller 17 is added to the test platform 2 in this embodiment. The powder scraper 5 preferably contacts the belt on the tensioning roller 17 to scrape powder. This avoids the problem that the position of the powder scraper 5 is affected by the increased diameter of the belt when the roller 15 is winding when scraping powder. The tensioning roller 17 of this application can also be designed as a rechargeable roller to realize the dual functions of tensioning the belt and charging the belt.

[0047] The foregoing has provided a detailed description of a paperless laser printer drum detection device according to embodiments of the present invention. Specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A paperless laser printing drum inspection device, comprising a printing device, wherein the printing device contains a drum and an inner transfer roller, and the drum contains a photosensitive drum, characterized in that: It also includes a test bench and a belt drive device set on the test bench. The belt drive device includes a belt capable of carrying toner. The printing device is set on the test bench. The housing of the printing device is provided with several through holes. The belt enters and exits the printing device through the through holes. After entering the printing device, the belt can pass through the gap between the photosensitive drum and the inner transfer roller. The photosensitive drum can transfer the text or graphics formed by the toner onto the belt through the inner transfer roller. The test bench is provided with a scraper blade for scraping the toner off the belt.

2. The paperless laser printing drum inspection device according to claim 1, characterized in that: The through holes include an upper left hole and a lower left hole on one side of the housing, and an upper right hole and a lower right hole on the other side of the housing. The belt includes a lower belt and an upper belt parallel to the lower belt. The lower belt passes through the lower left hole and the lower right hole, and the upper belt passes through the upper left hole and the upper right hole. The upper belt passes through the gap between the photosensitive drum and the inner transfer roller, and the photosensitive drum can transfer the text or graphics formed by toner onto the upper belt.

3. The paperless laser printing drum inspection device according to claim 1, characterized in that: The test bench is equipped with an external transfer roller for charging the belt.

4. The paperless laser printing drum inspection device according to claim 1, characterized in that: A collection box is located below the powder scraper.

5. The paperless laser printing drum inspection device according to claim 1, characterized in that: The belt drive device includes a drive motor, a drive roller, and a driven roller. The drive roller and the driven roller are rotatably connected to the test bench, and the drive motor is connected to the drive roller to drive the drive roller to rotate. The belt is wound around the drive roller and the driven roller.

6. The paperless laser printing drum inspection device according to claim 5, characterized in that: The drive motor is connected to the drive roller via a gear reduction structure.

7. The paperless laser printing drum inspection device according to claim 2, characterized in that: The printing device or the test bench is equipped with a tension roller, and the upper or lower belt can be tensioned by the tension roller.

8. The paperless laser printing drum inspection device according to claim 2, characterized in that: The lower left hole is the paper feed hole.

9. The paperless laser printing drum inspection device according to claim 1, characterized in that: The belt drive device includes roller one, roller two, and roller motors that drive roller one and roller two to rotate respectively. The two ends of the belt are fixed on roller one and roller two respectively.

10. A paperless laser printing drum inspection device according to claim 9, characterized in that: It also includes tension rollers.

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