TW200918322A - Paper-blocking mechanism and printer using the same - Google Patents

Abstract

A paper-blocking mechanism is disposed on a printer. The printer includes at least a main body and an exit roller. The paper-blocking mechanism includes a stopper portion and a stopper elastic element. The stopper elastic element is fixed on the main body, and is connected with the stopper portion and bias it. When the end of the paper leaves the stopper portion, the stopper elastic element brings the stopper portion to rise to block the paper exit lest that the paper is back rolled so as to cause paper-jamming.

Description

200918322

_ 三达号: TW3487PA IX. Description of the Invention: [Technical Field] The present invention relates to a paper stopper mechanism and a printer using the same, and more particularly to a paper stopper mechanism capable of preventing paper from being rewinded And the application of its printer. [Prior Art] FIG. 1 is a schematic view showing the configuration of a conventional printer having an Auto Sheet Feed (ASF). In the first drawing, the paper 2 on the paper tray 4 is loaded into the printer via a pickup-up roller 20, and the printed paper is fed out via a feed roller 30. An exit roller 40 is conveyed and discharged to the outside of the printer. The feed roller 30 and the paper discharge roller 40 are coupled by a timing belt (not shown) to rotate in the same direction. Fig. 2A-2B shows the relationship between the feed roller and the pickup roller when the paper picking state and the printing state are conventionally shown. The pickup roller 20 and the feed roller 30 are driven by the same motor 50, but the pickup roller 20 is controlled to be coupled or separated from the motor 50 by the ASF clutch 60. In the pickup state, as shown in FIG. 2A, the ASF clutch 60 is engaged with the gear set of the pickup roller 20, so that the rotation of the motor 50 is transmitted to the pickup roller 20 to be rotated to take the paper, and the motor 50 is made. Turning counterclockwise, the take-up roller 20 is rotated clockwise to take paper. At this time, the feed roller 30 and the pickup roller 20 rotate in the same direction, but at this time, the feed roller 30 rotates in the opposite direction to the paper discharge direction. The roller 30 and the paper discharge roller 40 of the first figure are connected by a timing belt 5 200918322

The three-way number: TW3487PA rotates in the same direction, so the direction of rotation of the paper discharge roller 40 is also opposite to the paper exit direction. In the printing state, as shown in FIG. 2B, the gear assembly of the ASF clutch 60 and the pickup roller 20 is opened, so that the motor 50 drives only the feed roller 30, and the motor 50 rotates clockwise to make the feed roller 30. Rotate counterclockwise with the paper exit roller 40 in the same direction as the paper exit direction. However, when the printing is completed, if the paper tail of a paper is not completely separated from the paper discharge roller 40, when the paper take-up roller 20 picks up the paper, the paper discharge roller 40 rotates in the opposite direction to the paper discharge direction, instead The paper will be reeled into the printer, causing paper jams. In addition, during the paper transport process, friction with the roller will generate static electricity, which will also cause the paper to adhere to the paper exit roller and cause paper jam. SUMMARY OF THE INVENTION To solve the above problems, the present invention provides a paper stopper mechanism and a printer using the same. The paper stopper mechanism can block the paper after the paper is discharged, thereby avoiding the problem that the paper is brought back by the paper discharge roller to cause the paper jam. f: According to the present invention, a paper stopper mechanism is provided which is disposed in a printer, and the printer includes at least one paper discharge roller. The paper stopper mechanism is arranged in parallel with the paper discharge roller, and comprises a stopper portion and a stopper elastic body. The stopper portion receives the pressure of the paper and is lower than the surface of the paper discharge roller when the paper passes through the paper discharge roller; The stop elastic body is fixed to the printer and biased to the stopper so that when the end of the output paper leaves the stopper, the stopper is raised to raise the stopper beyond the surface of the paper discharge roller. According to the present invention, a printer is provided, comprising a body and a paper output 6 200918322

_ Three 逹 number: TW3487PA roller and a paper stopper mechanism. The paper exit roller and the paper stopper mechanism are juxtaposed on the body, and the paper stopper mechanism includes a stopper and a stopper elastic body. The stopping portion receives the pressure of the paper and is lower than the surface of the paper discharge roller when the paper output passes through the paper discharge roller; the stopping elastic body is fixed on the body and biased to the stopping portion so as to stop when the end of the output paper leaves. At the time of the part, the stopper is raised to raise the stopper portion above the surface of the paper discharge roller. In order to make the above-mentioned contents and effects of the present invention more comprehensible, the following description of the preferred embodiments and the accompanying drawings will be described in detail as follows: broad-' [Embodiment] Embodiment 1 Please refer to the third FIG. 4 and FIG. 4 are respectively a schematic view showing a partial structure of a printer according to a first embodiment of the present invention and a side view thereof. The printer includes a body 100, a feed roller 160, a paper discharge roller 120, and a paper stopper mechanism 110. The paper output roller 120 is disposed on the main body 100. When printing, the paper 10 is driven into the printing area via the feeding roller 160. After the printing is completed, the paper feeding mechanism 130 and the paper discharge roller 120 are also disposed on the main body 100. The holding paper 10 continues to carry the paper tape away from the paper exit 5, and when the paper 10 is outputted, it falls on the tray 150. The paper stopper mechanism 110 is disposed on the body 100 by being coupled to a rotating shaft 116, and the paper stopper mechanism 110 is rotatable following the rotating shaft 116. The paper stopper mechanism 110 includes a stopper portion 114 and a stopper elastic body 112. The stopper portion 114 is lower than the surface of the paper discharge roller 120 by the pressure of the paper 10 during the output of the paper 10; the stopper elastic body 112 is coupled to the rotating shaft 116 and biased at 200918322.

_ Sanda nickname: TW3487PA stop portion 114 to provide the elastic force of the stop portion 114 against the paper 10. After the paper 10 is detached from the paper discharge roller 120, the stopper elastic body 112 lifts the stopper portion 114 out of the surface of the paper discharge roller 120, preventing the paper 10 from being unwound. In this embodiment, the stopping elastic body 112 is, for example, a spring, and the paper clamping mechanism 130 includes a star wheel 132 and a clamping elastic body 134. A clamping elastomer 134, such as a spring, is disposed on the body 100 to provide the resilient force of the star wheel 132 to grip the paper 10. As shown in Fig. 4, the stopper portion 114 includes a cantilever 114a and an extension portion 114b. One end of the cantilever 114a is coupled to the rotating shaft 116, and the extending portion 114b is disposed at the other end of the cantilever 114a and extends toward the output direction of the sheet 10. Please refer to FIGS. 5A and 5B, which respectively show a partial enlarged view of the paper stopper mechanism of FIG. 4 at the time of paper output and after output. As shown in FIG. 5A, since the paper jamming mechanism 130 and the paper discharge roller 120 of FIG. 4 hold the paper 10 so that the paper 10 has a tensile tension, the paper 10 can be sufficiently pressed to press the strength of the stopper portion 114. . Therefore, before the paper 10 has left the paper exit 5, the stopper portion 114 can be pressed down to smoothly pass the paper 10, and at this time, the stopper elastic body 112 connected to the stopper portion 114 is biased to one end of the cantilever and accumulates. An elastic force. As shown in FIG. 5B, when the end of the output paper 10 leaves the stopper portion 114, the elastic force accumulated by the stopper elastic body 112 causes the stopper portion 114 to rise so that the extension portion 114b is higher than the paper discharge roller 120. On the surface, even if the paper 10 is adsorbed on the paper discharge roller 120 by electrostatic force or the paper discharge roller 120 is reversed, the paper 10 is not brought into the paper discharge port 5 to cause paper jam. In addition, the material of the stopping portion 114 may also include a conductive material and conduct electricity.

Sanda Number: TW3487PA • Material such as metal or metal powder doped plastic. In this way, the accumulated static charge on the paper 10 can be slid to prevent the paper 1 〇 from sticking to the paper discharge roller 120. However, the technical field to which the present invention pertains is generally known, and the technology of the present invention is not limited thereto. As shown in Fig. 3, the printer of the present invention further includes a second paper stopper mechanism 丨7〇 disposed on the body 100 at intervals from the paper stopper mechanism 11〇. In this way, paper of different sizes can correspond to the paper blocking mechanism of different positions to achieve the purpose of avoiding paper jam. Of course, the number of paper stopper mechanisms is not limited thereto, and the number thereof may be set corresponding to the corresponding paper size type. Embodiment 2 Referring to Figure 6, there is shown a side view of a partial structure of a printer in accordance with a second embodiment of the present invention. The difference from the first embodiment is that the detecting device 180 is disposed on the body (10) with respect to the stopping portion 114. The rest of the components of the embodiment are continued to use the same reference numerals, and the functions thereof will not be described again. The detecting device 18 is, for example, a contact sensor. The paper sheet 10 has been detached from the paper discharge roller 120 in accordance with the contact state of the detecting device 180 with the stopper portion 114. For example, in the absence of paper, the detecting device 180 and the stopper portion 114 are in contact with each other. When the paper is input, the stopper portion 114 is depressed, and at this time, the device 18G is disengaged from the stopper portion 114, and the detecting device 18 outputs a signal to notify the printer that the paper has been input. When the output of the paper is completed, the detecting device 18 is again in contact with the stopping portion ι4. At this time, the detecting device 18 outputs another signal again to notify the P, and the sheet has completely left. This - the design can ensure the stop 114 11418322

Sanda number: TW3487PA. After the rebound, the paper exit roller 120 can be reversed to ensure that the paper jam does not occur. The paper stopper mechanism and the printer using the same disclosed in the above embodiments of the present invention can prevent the paper from being adhered to the paper discharge roller by providing a paper stopper mechanism formed by the stopper elastic body and a stopper portion. Bring back the paper jam. Preferably, the stop portion can be made of a conductive material to illuminate the accumulated static charge. In addition, a detection device can be provided to ensure that the paper output roller can be reversed after the paper has been completely output and released from the paper exit roller, ensuring that the paper stopper mechanism functions. In the above, the present invention has been disclosed in the above preferred embodiments, but it is not intended to limit the present invention. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims. 200918322

Sanda number: TW3487PA ^ [Simple description of the drawing] Fig. 1 is a schematic view showing the construction of a conventional printer with an automatic paper feeding device, and Fig. 2A-2B shows the feeding roller and the conventional feeding roller. FIG. 3 is a schematic diagram showing a partial structure of a printer according to a first embodiment of the present invention, and FIG. 4 is a diagram showing a printer 1 according to a first embodiment of the present invention. 5A is a partial enlarged view of the paper stopper mechanism of FIG. 4 before the paper output, and FIG. 5B is a partially enlarged schematic view of the paper stopper mechanism of FIG. 4 after the paper is output; And FIG. 6 is a side view showing a partial structure of a printer according to a second embodiment of the present invention. u [Description of main component symbols] 2, 10: Paper 4: Tray 5: Paper exit 20: Pickup roller 30, 160: Feed roller 40, 120: Paper exit roller 50: Motor 11 200918322

_ Sanda number: TW3487PA 60: ASF clutch 100: body 110: paper stopper mechanism 112: stopper elastic body 114: stopper portion 114a: cantilever 114b: extension section 116: shaft 130: paper jam mechanism 132: star wheel 134 : clamping elastic body 150 : tray 170 : second paper stopper mechanism 180 : detecting device

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Claims (1)

200918322 - Erda ID: TW3487PA X. Application for patent circle: h A paper stopper mechanism, including a body-and a paper-out machine, the printer-to-H-wheel-receiving mechanism includes: And the jaw portion is disposed side by side with the paper discharge roller on the body; wherein *, the bullet [the body] is fixed on the body and biased to the stop portion, wherein the paper passes through the paper exit roller When the == out = roll = is due to the movement of the stop elastic body, the upper stop is lifted, and the first canopy and extension section, the stop elastic system bias In the case of the wheel, the extension is disposed at the other end of the cantilever and is directed to the sheet 3. The paper stopper mechanism of claim 1, wherein the stopper elastic body is a spring. 4. The paper stopper mechanism of claim 1, wherein the material of the stopper portion comprises a conductive material. . 5. The paper stopper mechanism of claim 4, wherein the conductive material is metal or metal powder doped plastic. 6. The paper feeding mechanism of claim 1, further comprising a detecting device, wherein the detecting device is disposed on the body relative to the stopping portion, according to the contact between the detecting device and the stopping portion Status to detect the roll-out status of the paper. 13 200918322 . Sanda number: TW3487PA 7. - A printer, comprising: a body having a paper exit; a wheel being disposed on the body; and at least as described in the scope of the patent Paper blocking mechanism. The printer of claim 7, further comprising a slanting body, wherein the paper stopper mechanism is coupled to the rotating shaft and rotatable along the rotating shaft. Detecting 9· % of the printer described in the scope of the patent scope, including - 摅 1 device ' § 彳贞 彳贞 装置 相对 相对 设置 设置 设置 设置 设置 设置 设置 设置 设置 ' ' ' ' ' ' ' ' ' ' ' ' ' The contact state of the moving part is measured by debt - the output state of the paper.