TWI499513B - Printing device - Google Patents

Description

Printing device

The present invention relates to a printing device, and more particularly to a printing device having a paper supply buffer mechanism.

In recent years, with the popularity of personal computers and the rapid development of the Internet, printers have become an essential product in personal computer devices. For the average user, a basic printing device is sufficient for various document printing needs.

Generally, the printing device is provided with a paper carrying seat, so that the user can pre-place the printing paper, such as continuous paper such as report paper, and wait until the printing device receives the command to start, the paper feeding mechanism will report again. The paper is guided to the printing device for printing. However, the paper feeding mechanism of the conventional printing device conveys the paper to the printing device by a paper feeding assembly and a feed roller, wherein the paper feeding assembly is disposed on the paper carrier. And having a paper feed roller to drive the paper, and the paper feed roller is disposed on the printing base of the printing device, so that the paper can be placed in the paper carrier, and the paper is sequentially fed by the paper feeding component and the paper feed roller Transfer to the printing device for printing.

When the conventional printing device is in operation, the paper feed assembly and the paper feed roller operate simultaneously to transfer the paper to the printing device. In the conventional technology, the speed of the paper feed roller and the paper feed roller are the same, but the paper feed roller and the paper feed roller are the same. Independent drive system, installed on the printing device will produce mechanical errors, and the paper feed roller and the paper feed roller are set to different positions, so there will be an unsynchronized operation, that is, the paper feed roller will be transferred by paper. Printing to the printing device and starting earlier, so that the paper feed roller and the paper feed roller will have a difference in rotation speed, resulting in the actual operation of the paper feed roller in the paper feed assembly is less than the rotation speed of the paper feed roller, so When the printing device is transporting blank continuous paper such as report paper, the paper feeding speed of the paper placed on the paper carrier is slowed down due to the weight of the paper continuous paper of the blank continuous paper, and the traveling speed is slowed down on the paper feeding roller. Paper feed speed.

However, when the paper feed speed is slowed down and the rotation speed of the paper feed roller is constant, the resistance of the paper between the paper feed rollers is increased, causing the paper to slip between the paper feed rollers, resulting in paper jams. In other cases, it will affect the operational efficiency of the printing device and waste paper or cause trouble in use.

Therefore, in order to prevent the paper from slipping between the paper feed rollers, the pressure between the paper feed roller and the platen roller above the paper feed roller can be increased, for example, the force of the paper plate under the pressure roller is increased, so that the paper feed roller and the pressure roller The paper can be surely held between the paper rollers to prevent the paper from slipping. However, since the paper feed roller is made of a soft material such as rubber, when the pressure applied to the paper feed roller increases, the paper feed roller is crushed to cause damage, or the torque of the paper feed roller becomes large. Causes the deviation of the distance when the paper is fed, which makes the paper feed speed slower.

In addition, in other conventional technologies, the paper feeding operation can be performed directly by the paper feeding roller without the paper feeding roller, so as to prevent the paper roller from slipping due to the inconsistent rotation speed of the paper feeding roller and the paper feeding roller in the paper feeding assembly. Happening. However, if paper is fed directly through the paper feed roller in this manner, it is easy to cause the paper to slip due to insufficient friction between the paper and the paper feed roller, resulting in a lack of print quality and the like.

In view of this, how to develop a printing device that can improve the above-mentioned conventional technology to solve the lack of the prior art is an urgent problem to be solved by those skilled in the related art.

The purpose of the present invention is to provide a printing device that solves the problem of paper slippage, paper jam, and wasted paper due to the inconsistent rotation speeds of the paper feed roller and the paper feed roller, thereby improving the print quality.

In order to achieve the above object, a broader aspect of the present invention provides a printing apparatus, which comprises a paper carrier and a printing carriage for conveying paper from the paper carrier to the printing carriage, and the paper is conveyed. The initial guide curvature, the printing seat paper feeding assembly includes a paper feeding roller and a second driving component, and the printing device has a paper feeding buffer mechanism, and the paper feeding buffer mechanism comprises: a paper feeding assembly, which is disposed on the paper feeding assembly a paper carrier for guiding paper, the paper feeding assembly further comprising: a first driving component disposed on one side of the paper carrier for conveying the paper to the printing pad; and a resisting member that abuts the paper, so that The paper drives the abutting member to be displaced; and the position sensor is disposed relative to the position of the abutting member to sense the position of the abutting member, thereby adjusting the rotational speed of the first driving component; wherein, when the paper is conveyed against the top When the piece is controlled, the displacement of the contact member is controlled and detected by the position sensor, so that the position sensor senses the initial change of curvature of the paper, and transmits a signal to the first driving element for speed acceleration compensation to approach the second The speed of the movable member, so that the paper feed guide to maintain the initial curvature at the time channeled.

1‧‧‧Printing device

10‧‧‧Paper buffer mechanism

11‧‧‧paper carrier

12‧‧‧Printing Block

13‧‧‧paper supply components

130‧‧‧First drive element

131‧‧‧Resistance

131a‧‧‧ Ontology

131b‧‧‧ arrive at the top

131c‧‧‧Induction plate

131d‧‧‧Locker

132‧‧‧ position sensor

132a‧‧ Sensing area

133‧‧‧Fixed plates

14‧‧‧Feed assembly

140‧‧‧Feed roller

141‧‧‧Second drive element

15‧‧‧Shell

150‧‧‧ accommodating space

150a‧‧‧First Housing Department

150b‧‧‧Second Accommodation

2‧‧‧paper

Figure 1 is a schematic view showing the structure of a printing apparatus of the preferred embodiment of the present invention.

Fig. 2 is a side view showing the printing apparatus shown in Fig. 1.

Fig. 3 is a side view showing the printing apparatus shown in Fig. 1.

Fig. 4 is a partially enlarged view showing the paper feed buffer mechanism shown in Fig. 1.

Fig. 5 is a paper feed state diagram of the printing apparatus shown in Fig. 1.

Fig. 6 is a schematic view showing the state of the induction plate member shown in Fig. 4 away from the position sensor.

Some exemplary embodiments embodying the features and advantages of the present invention are described in detail in the following description. It is to be understood that the present invention is capable of various modifications in the various aspects of the present invention, and the description and drawings are intended to be illustrative and not limiting.

Please refer to FIG. 1 , which is a schematic structural view of a printing device according to a preferred embodiment of the present invention. As shown in the figure, the printing device 1 of the present invention comprises a paper supply buffer mechanism 10. In the embodiment, the printing device 1 comprises a paper carrier 11 and a printing carriage 12, wherein the paper carrier 11 is used for The paper 2 is placed such that the paper 2 is guided by the paper carrier 11 to the printing carriage 12, wherein the paper 2 has an initial guiding curvature when guided, and the printing carriage 12 is placed by the paper carrier 11. The printing paper 2 is further printed, and the printing base 12 further includes a paper feeding unit 14 disposed on the printing base 12 for receiving the paper 2 guided by the paper feeding unit 13 so that the paper 2 can be For printing, in this embodiment, the paper 2 can be a continuous paper, such as a report paper, but is not limited thereto. The paper feed buffer mechanism 10 includes a paper feed unit 13 that is disposed on the paper carrier 11 for guiding the paper 2 to the printing unit 12 for printing.

Please refer to Fig. 1 and Fig. 2, wherein Fig. 2 is a side view of the printing device shown in Fig. 1. As shown in FIG. 1 , the paper feed assembly 13 includes a first driving component 130 , a contact 131 , and a position sensor 132 . In the embodiment, the first driving component 130 is disposed on one side of the paper carrier 12 . For driving the paper feed assembly 13 so that The first driving element 130 can be a stepping motor, but is not limited thereto. The abutting member 131 is displaceably disposed on one side of the paper carrier 11 and partially abuts against the paper 2 (as shown in FIG. 2), so that the paper 2 can be displaced by the movable member 131. The position sensor 132 is disposed relative to the position of the abutting member 131 for sensing the position of the abutting member 131 to adjust the rotational speed of the first driving element 130. The paper feed assembly 14 includes a paper feed roller 140 and a second drive member 141, wherein the paper feed roller 140 is embedded in the print carriage 12 for receiving and conveying the paper 2. The second driving component 141 is configured to drive the paper feed roller 140, and during the guiding of the paper 2, a rotational speed difference is generated between the rotational speed of the first driving component 130 and the rotational speed of the second driving component 141, in this embodiment. The second driving component 141 can be a stepping motor, but is not limited thereto. When the paper 2 abuts against the abutting member 131 during the guiding process, the resisting member 131 is displaced and detected by the position sensor 132, so that the position sensor 132 senses the initial guiding curvature change of the paper 2. A signal is transmitted to the first driving element 130 to accelerate the rotation thereof so as to approach the second driving element 141 at a rotational speed. The detailed structure of the printing apparatus 1 of the present embodiment will be described in detail below.

Please refer to FIG. 1 and cooperate with FIG. 3 and FIG. 4 , wherein FIG. 3 is a schematic side view of the printing device shown in FIG. 1 and FIG. 4 is a paper feeding buffer mechanism shown in FIG. 1 . Partially enlarged view. As shown in FIG. 1 , the printing device 1 of the present embodiment further includes a housing 15 having an accommodating space 150 , and the paper carrier 11 and the printing substrate 12 are disposed in the accommodating space 150. The space 150 forms a first accommodating portion 150a and a second accommodating portion 150b, and the first and second accommodating portions 150a and 150b are respectively disposed at two sides of the printing block 12. As shown in FIG. 4, the abutting member 131 of the present embodiment is disposed on one side of the paper carrier 11 and partially disposed in the first receiving portion 150a. In this embodiment, The abutting member 131 further includes a body 131a, a top portion 131b, and a sensing plate member 131c. The body 131a is connected to the top portion 131b, and the abutting portion 131b is substantially extended from the body 131a toward the paper carrier 11 and partially protrudes from the first portion. An accommodating portion 150a is disposed such that the end of the abutting portion 131b can abut against the paper 2 (as shown in FIG. 2). In this embodiment, an elastic member (not shown) can be disposed in the body 131a so as to be at the top. The main body 131a and the abutting top 131b may be integrally formed, but not limited thereto, or may be a combined structure. As shown in FIG. 3 and FIG. 4, the sensing plate member 131c is locked by a plurality of locking members 131d, and is connected to the body 131a, and is disposed corresponding to the position sensor 132, so that the position sensor 132 is sensed. The sensing plate member 131c is the displacement of the abutting member 131.

Please refer to FIG. 3 and FIG. 4 again. As shown in the figure, the position sensor 132 of the embodiment is fixed on a fixing plate member 133, and the fixing plate member 133 is locked to the paper carrier 11 The position sensor 132 is also disposed on the inner wall of the first accommodating portion 150a by the fixing plate member 133, and is disposed corresponding to the abutting member 131, and is disposed on the inner wall of the first accommodating portion 150a. In this embodiment, the fixing plate member 133 is an L-shaped plate member, but is not limited thereto. As shown in FIG. 4, the position sensor 132 of the present embodiment further includes a sensing area 132a for movably correspondingly locating the sensing plate 131c of the abutting member 131 in the sensing area 132a, thereby making the position sense The detector 132 senses the initial change in curvature of the sheet 2. For example, when the printing apparatus 1 transports the paper 2, the rotational speeds of the first and second driving elements 130, 141 are designed to be the same, but since the first and second driving elements 130, 141 are independent drive systems, The mechanical error is generated when the printing device 1 is mounted, and the first and second driving elements 130 and 141 are respectively disposed at different positions, so that the operation may be out of synchronization, so that the first and second driving elements are caused. The pieces 130, 141 will generate a difference in rotational speed, resulting in the fact that the rotational speeds of the first and second driving elements 130, 141 are inconsistent, causing the initial guiding curvature of the paper 2 to increase and thus away from the paper carrier 11 and the printing carriage 12 (eg, 5, the abutting top 131b of the paper 2 is pushed by the paper 2, thereby driving the body 131a, and finally the body 131a drives the sensing plate 131c to move away from the position sensor 132.

Please refer to FIG. 1 and FIG. 2 again in conjunction with FIG. 5, wherein FIG. 5 is a paper feed state diagram of the printing apparatus shown in FIG. 1. As shown in the figure, when the printing device 1 performs a paper feeding operation, the paper feeding unit 13 is driven by the first driving member 130 to drive the paper 2 of the paper carrier 11 into the printing base 12, at this time, the paper The 2 series has an initial guiding curvature, that is, the paper 2 is substantially attached to the paper carrier 11, and when the paper 2 is guided to the printing carriage 12, the second driving member 141 drives the paper feeding roller. 140, for receiving and continuing to guide the paper 2 to start the printing operation. Then, as shown in FIG. 5, since the rotation speed of the first driving member 130 and the rotation speed of the second driving member 141 are not synchronized, the paper feed speed on the paper carrier 11 may be slower than that. The paper feed speed of the paper 2 of the printing seat 12 causes a large pulling force on the paper 2 on the printing base 12, thereby making the curvature of the paper 2 between the paper carrier 11 and the printing base 12 large. The paper 2 is far away from the paper carrier 11 and the printing base 12 and the curvature is larger than the initial guiding curvature of the paper 2, and at the same time, the abutting top 131b of the abutting member 131 against the paper 2 is also used by the paper 2 Driven away from the paper carrier 11, the sensing plate 131c is also displaced in the same direction by the body 131a connected to the abutting top 131b, and is gradually moved away from the sensing area 132a of the position sensor 132 (eg, Figure 6 shows). At this time, the position sensor 132 senses that the sensing plate 131c is gradually separated. When the sensing plate 131c is away from the position sensor 132 and is detected by the position sensor 132, the position sensor 132 transmits a signal. To the first driving component 130 of the paper feed assembly 13, and when the first driving component 130 receives the signal, the rotational speed of the first driving component 130 is accelerated to approach the rotational speed of the second driving component 141 to allow the paper to be loaded. The paper feed speed of the paper 2 on the seat 11 is increased, so that the paper 2 originally away from the paper carrier 11 and the printing carriage 12 can be flatly attached to the surface of the paper carrier 11 and the printing carriage 12, and the paper 2 is guided. The initial guiding curvature of the paper 2 is maintained, and the printing operation can be smoothly performed. In this way, the paper 2 can be prevented from slipping between the paper feed rollers 140 in the conventional technology, and the paper jam or the like is missing, thereby improving the printing quality.

In summary, the printing device of the present invention senses the displacement of the abutting member by the position sensor, thereby causing the paper in the guiding process to change against the initial guiding curvature, thereby causing the paper to abut against the paper. When the resisting member is displaced and away from the position sensor, the position sensor transmits a signal to the first driving component, so that the rotational speed of the first driving component is acceleratedly compensated to approach the rotational speed of the second driving component, so that the paper Maintaining the initial guiding curvature during the guiding process, that is, the paper originally away from the paper carrier and the printing base can be flatly attached to the surface of the paper carrier and the printing seat to prevent the paper in the conventional technology from being fed into the paper feeding roller. Sliding between, causing missing paper jams, etc., thereby improving print quality. Since the above advantages are inferior to the prior art, the paper supply buffer mechanism of the printing device of the present case is of great industrial value, and the application is filed according to law.

This case has been modified by people who are familiar with the technology, but it is not intended to be protected by the scope of the patent application.

1‧‧‧Printing device

10‧‧‧Paper buffer mechanism

11‧‧‧paper carrier

12‧‧‧Printing Block

13‧‧‧paper supply components

130‧‧‧First drive element

131‧‧‧Resistance

132‧‧‧ position sensor

14‧‧‧Feed assembly

140‧‧‧Feed roller

141‧‧‧Second drive element

15‧‧‧Shell

150‧‧‧ accommodating space

150a‧‧‧First Housing Department

150b‧‧‧Second Accommodation

2‧‧‧paper

Claims (5)

A printing device comprising a paper carrier and a row of printing seats for guiding a sheet of paper from the paper carrier to the printing pad, the paper having an initial guiding curvature during guiding, the column The printing base has a paper feeding assembly, which comprises a paper feeding roller and a second driving component, and the printing device has a paper feeding buffer mechanism. The paper feeding buffer mechanism comprises: a paper feeding assembly, which is disposed on the printing device a paper carrier for guiding the paper, the paper feeding assembly further comprising: a first driving component disposed on one side of the paper carrier for conveying the paper to the printing pad; an abutting member Resisting the paper so that the paper drives the abutting member to displace; and a position sensor disposed relative to the position of the abutting member to sense the position of the abutting member, thereby adjusting the first driving The rotation speed of the component; wherein, when the paper is guided against the abutting member, the paper controls the displacement of the contact member and the contact member is detected by the position sensor, so that the position sensor senses the paper Initially introduces a change in curvature and transmits a Numbers to the first driving element for accelerating the compensation speed to approach the speed of the second drive element, so that the paper feed guide to maintain the initial curvature of the sheet in the process of channeled. The printing device of claim 1, wherein the position sensor further comprises a sensing area, wherein the sensing plate of the abutting member is movably disposed correspondingly in the sensing area. The printing device of claim 1, wherein the abutting member further comprises a body, an abutting top and a sensing plate, the system is connected to the abutting top, and the end of the abutting top abuts The paper. The printing device of claim 3, wherein the sensing plate of the abutting member is connected to the body by a plurality of locking members, and is disposed corresponding to the position sensor. The printing device of claim 3, wherein the body of the abutting member and the abutting top are one of an integrally formed structure or a combined structure.