WO2011072558A1

WO2011072558A1 - Web receiving device and printer having it

Info

Publication number: WO2011072558A1
Application number: PCT/CN2010/078429
Authority: WO
Inventors: 姜天信; 丛振先; 张继刚; 杨民; 刘凯
Original assignee: 山东新北洋信息技术股份有限公司
Priority date: 2009-12-17
Filing date: 2010-11-04
Publication date: 2011-06-23
Also published as: CN101722745B; CN101722745A

Abstract

A web receiving device (2) for a printer comprises a web-bin base (21); a web bin (22) detachably mounted in the web-bin base, an auxiliary passage (S) for a printing web (R) passing through is formed between an outer surface at the bottom of the web bin and the web-bin base; and a detecting mechanism (23) mounted to the web-bin base and used for detecting whether the printing web is present in the auxiliary passage. According to the web receiving device, once the residual amount of the printing web is less than a distance between the detecting mechanism and a printing mechanism, the detecting mechanism can timely send a signal indicating a lack of the web. Therefore, a phenomenon that image is printed incompletely can be prevented from occurring effectively, and the residual web can be used in a maximum extent.

Description

Paper-capacitor device and printer having the same, the present application is filed on December 17, 2009, to China Patent Office, application number 200910260381.6, and the invention titled "paper-holding device and printer having the paper-holding device" Priority of invention patent application. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printer, and more particularly to a paper carrying device for a web and a printer using the same. BACKGROUND OF THE INVENTION Printers using roll paper are widely used in supermarkets, shopping malls, lotteries, and the like for printing customer transaction credentials. Due to the large amount of work, the paper is frequently replaced. To prevent paper out problems during printing, you usually need to prompt the user to change the paper when the paper is almost empty. A common method is to set a paper end detection mechanism on the side wall of the printer's paper bin to detect the remaining amount of paper. When the paper detection unit detects that the remaining amount of the printing paper is less than the preset value, the printer issues an alarm message to remind the user to replace the printing paper. The Chinese patent No. 200410023506.0 discloses a paper end detecting device and a printer using the same. As shown in Figs. 1 and 2, the paper roll 110 is placed in the paper bin 100, and a paper end detecting means 142 is provided on the side wall of the paper bin. When the outer diameter of the web 110 in the paper bin 100 is large, the paper detecting device 142 detects the side wall of the web 110, thereby judging that the printer has paper; as the printing work continues, the web The diameter of 110 is getting smaller and smaller. When the amount of paper remaining on the web is reduced to the extent shown in Fig. 2, the paper detecting means 142 detects the inner hole 112 of the core of the web 110, thereby judging The printer web 110 is about to be used up and the signal is passed through the circuit to the alarm device for an alarm. The inventors have found that when the above-mentioned paper is used to detect the amount of paper remaining in the web, the weight of the paper roll is gradually reduced as the amount of remaining paper on the web is less and less, and the paper roll is fed during the paper feeding process. It is easy to shake in the paper bin, which affects the detection of the web by the detecting device. In order to achieve reliable detection of the amount of paper left, when the amount of paper remaining is less than 1.5 m - 2 m, the printer will issue an alarm, so the state of the paper when it is exhausted cannot be accurately detected. At the same time, when the user receives the information from the paper, he needs to pay attention to the consumption of the paper roll at any time. Otherwise, the incomplete printing of the ticket paper cannot be avoided, which causes unnecessary trouble for the user. In order to improve the user's operation simplicity and save printing paper, the printer needs to be able to accurately detect the exhaustion state of the printing paper. SUMMARY OF THE INVENTION An object of the present invention is to provide a paper carrying device of a printer for accurately detecting the exhaustion state of the printing paper. It is still another object of the present invention to provide a printer having a paper holding device capable of accurately detecting the exhaustion state of a printing paper. To this end, the present invention provides a paper carrying device for a printer, comprising: a paper bin; a paper bin detachably mounted in the paper bin, and a printing paper formed between the outer surface of the bottom and the paper holder An auxiliary passage passing therethrough; and a detecting mechanism mounted to the paper bin for detecting whether there is 4 printing paper in the auxiliary passage. In an embodiment, the paper bin comprises: a first bottom plate having a bottom outer surface forming an auxiliary passage with the paper bin; a first side wall disposed on one side of the first bottom plate; and a shaft perpendicular to the first side The wall extends and the core of the paper feed reel is threaded therethrough and the ends thereof define an arm positioned on the stack of paper. In another embodiment, the paper bin comprises: a first bottom plate having a bottom outer surface forming an auxiliary passage with the paper bin seat; and a first side wall and a second side wall disposed on opposite sides of the first bottom plate; Wherein the outer sides of the first side wall and the second side wall form an arm positioned on the paper magazine seat. Preferably, the left side wall and the right side wall of the paper bin have respectively a positioning groove that cooperates with the positioning post. More preferably, the bottom wall of the paper bin is formed by a second bottom plate, wherein an arcuate auxiliary passage is formed between the second bottom plate and the first bottom plate. Preferably, a plurality of rollers are disposed on the second bottom plate of the paper bin. Preferably, the outer surface of the first bottom plate of the paper bin is provided with a plurality of ribs extending in the width direction of the auxiliary channel. Preferably, the detecting mechanism is a photoelectric sensor or a rocker sensor. Further, the present invention provides a printer comprising a lower casing, an upper casing hinged to the lower casing, a printing mechanism, and a paper accommodating device according to the above, which is disposed in the lower casing. Preferably, the printer further includes a paper cutting mechanism disposed downstream of the printing mechanism, wherein the printing mechanism includes a print head disposed on the lower casing and a rubber roller disposed on the upper casing. According to the paper accommodating device of the present invention, the detecting mechanism can issue the paper out signal in time when the remaining amount of the printing paper is smaller than the distance between the detecting mechanism and the printing mechanism. Compared with the prior art, the detecting mechanism can accurately determine the amount of paper left in the printing paper, which helps the printer to accurately issue a paper out warning, thereby reducing unnecessary trouble for the user. At the same time, the invention can effectively avoid the occurrence of incomplete printing and maximize the utilization of the remaining paper. In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages. The present invention will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in FIG In the drawings: Fig. 1 is a schematic view showing a state in which a paper end detecting mechanism is used for detecting a large paper roll in a conventional printer; Fig. 2 is a view showing a state in which the conventional printer paper end detecting mechanism shown in Fig. 1 is used for detecting a small paper roll; Figure 3 is a perspective view showing the printer in the closed state of the upper casing according to the present invention; Figure 4 is a perspective view showing the printer in the open state of the upper casing according to the present invention; An exploded view of the paper bin and the paper bin of the paper-receiving device; FIG. 6 is a schematic view showing a first embodiment of the paper bin of the paper-receiving device according to the present invention; Figure 7 is a plan view showing the arrangement of the paper magazine and the paper holder in the paper-holding device according to the present invention; Figure 8 is a cross-sectional view of the paper-holding device of Figure 7 taken along the line AA; Figure 9 is a view showing the printer according to the present invention. Longitudinal sectional view; and Figure 10 shows a schematic view of a second embodiment of a paper bin according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention are described in detail below with reference to the accompanying drawings. Figures 3, 4 and 9 illustrate a printer in accordance with the present invention. Please refer to Figure 3, Figure 4 and Figure 9. The printer includes a housing 1, a paper holding device 2, and a printing mechanism 3. The paper taking device 2 and the printing mechanism 3 are both disposed inside the casing 1. The paper holding device 2 is for accommodating the roll paper R for printing; the printing mechanism 3 is used to print a set image or text on the roll paper. The housing 1 includes an upper housing 11 and a lower housing 12, and the upper housing 11 is hinged to the lower housing 12 by a rotating shaft, and can be opened or closed with respect to the lower housing 12. When the upper casing 11 is opened relative to the lower casing 12, the paper taking device 2 is exposed to facilitate replacement of the web. When the upper casing 11 is closed with respect to the lower casing 12, a paper opening P is formed therebetween for discharging the printing paper. The manner in which the printing mechanism 3 performs printing does not affect the implementation of the present invention, and therefore, the printing mechanism may be a thermal printing mechanism, a dot matrix printing mechanism, an inkjet printing mechanism, or the like. In this embodiment (please refer to FIG. 9), the printing mechanism is a thermal printing mechanism, including a print head 31 and a rubber roller 32. The print head 31 is disposed on the lower casing 12, and the rubber roller 32 is disposed on the upper casing 11. . When the upper casing 11 is closed with respect to the lower casing 12, the print head 31 is in tangential contact with the glue stick 32, and the printing paper passes between them. When printing is required, the rubber roller 32 is driven by the printer transmission mechanism (not shown) to drive the paper to move in the direction of the 4 paper port P, while the print head 31 prints on the paper; when the upper casing 11 is opened relative to the lower casing 12 At the same time, the rubber roller 32 moves synchronously with the upper casing 11, so that the rubber roller 32 is separated from the print head 31, and the printing paper is easily replaced. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific embodiment of a printer paper carrying device of the present invention will be described below with reference to FIGS. 5 to 8. Please refer to Figure 5 and Figure 6. As shown, the paper holding device 2 includes a paper bin 21, a paper bin 22, and a detecting mechanism 23 (shown in Fig. 9). The paper magazine 21 is fixedly disposed inside the lower casing 12, and may be integrated with the lower casing 12, and may be combined with the lower casing 12, including a left side wall 211, a right side wall 212, and a bottom plate 213. The left side wall 211 and the right side wall 212 are substantially perpendicular to the bottom plate 213, and the three are connected to each other to form a receiving space. The left side wall 211 and the right side wall 212 are respectively provided with mutually symmetrical left concaves 211a (shown in FIG. 7) and right grooves 212a for supporting the paper bin 22. The paper bin 22 includes a first side wall 221, a first bottom plate 222, and a support arm 223. The first side wall 221 is substantially perpendicular to the first bottom plate 222, and the two are fixedly connected to form a receiving roll paper space; the arm 223 is substantially perpendicular to the first side wall 221, and the end portion 223a thereof protrudes along the width direction side of the first bottom plate 222. The detecting mechanism 23 is fixedly mounted on the bottom plate 213, and may be a photoelectric sensor or a swing arm type sensor for detecting the storage space of the paper bin. In this embodiment, the detecting mechanism 23 is a photoelectric sensor, and the presence or absence of printing paper in the channel is detected by the photoelectric sensor voltage change. Referring to FIGS. 7 and 8, the paper bin 22 of the paper taking device 2 is detachably mounted inside the paper bin base 21 and supported by the paper bin base 21. Specifically, the two end portions 223a of the arms 223 of the paper bin 22 are respectively engaged with the left groove 211a and the right groove 212a provided on both side walls of the paper magazine seat 21. The cross section of the arm 223 is set to be non-circular, so that the paper bin 22 can be prevented from rotating relative to the paper bed holder 21. The bottom plate 213 (shown in Figure 5) and the first bottom plate 222 are disposed substantially parallel to one another and maintain a set distance. Thus, an auxiliary passage 8 for conveying and detecting the printing paper is formed between the bottom plate 213 and the first bottom plate 222. It should be noted that the cross section of the bottom plate 213 and the first bottom plate 222 may be irregular or polygonal. In order to ensure smooth movement of the printing paper in the auxiliary passage S, preferably, the bottom plate 213 and the first bottom plate 222 are arranged in an arc shape, and the size of the first bottom plate 222 matches the outer diameter of the largest paper roll used by the printer. In addition, in order to reduce the frictional resistance during the transportation of the printing paper, a plurality of rollers 214 may be disposed on the bottom plate 213, or a protrusion 222a facing the auxiliary channel S may be disposed on the outer surface of the first bottom plate 222 (shown in FIG. 6 To reduce the contact area between the printing paper and the upper and lower surfaces of the auxiliary passage S. Next, the working principle of the paper accommodating device of the present invention will be described with reference to Figs. 5 and 9. The upper casing 11 of the printer is opened, and the paper bin 22 is taken out. The mandrel of the roll paper R is fitted over the outer circumference of the arm 223, so that the roll paper P enters the paper-receiving space of the paper bin 22. Next, the outermost paper of the roll paper R is wound around the outer circumference of the first bottom plate 222 of the paper bin 22 in the moving direction of the printing paper (counterclockwise in the drawing), and sufficient operation is required at the free end of the paper roll. The length is such that the front end can be smoothly discharged when the upper casing 11 is closed. The paper bin 22 is loaded into the housing space of the paper magazine holder 21, and the paper magazine 22 is supported by the paper magazine holder 21. Thus, the outermost sheet of the web P is conveyed to the printing mechanism 3 through the auxiliary passage S formed between the bottom plate 213 of the paper magazine seat 21 and the first bottom plate 222 of the paper magazine 22, and the printing paper is fed from the printing head 31 and the plastic cylinder 32. After passing between, it is output by 4 paper port P. After the printing paper is replaced, during printing, the printing paper passes through the auxiliary passage S, and the detecting mechanism 23 can detect the presence of the printing paper. As the printing progresses, the printing paper is gradually reduced. When the detecting mechanism 23 detects that the printing paper does not exist, it indicates that the remaining paper length is smaller than the distance between the detecting mechanism 23 and the printing mechanism 3, that is, the printing paper is about to be used up. Generally, the distance between the detecting mechanism 23 and the printing mechanism 3 can be set by the user and is known by the user. At this time, the printer control device (not shown) can receive the paper out warning according to the situation after receiving the signal from the detecting mechanism 23. For example, when the control device receives the paper out signal sent by the detecting mechanism 23, directly controls the alarm device to issue a warning to remind the user to change the medium; or, when the control device receives the paper out signal from the detecting mechanism 23, the control device will leave the paper. The length is compared to the content to be printed. When the length of the remaining paper is less than the length of the content to be printed, the printer directly issues a paper out warning; when the remaining paper length is greater than the length of the content to be printed, the printer issues a paper out warning after printing the task to make full use of the remaining paper. Compared with the prior art, the detecting mechanism 23 can accurately determine the amount of paper remaining in the printing paper, thereby timely and accurately issuing an alarm signal, thereby reducing unnecessary trouble for the user. At the same time, the invention can effectively avoid the occurrence of incomplete printing and maximize the utilization of the remaining paper. In other embodiments of the present invention, the printer may further provide a paper cutting mechanism 4 downstream of the printing mechanism 3 for cutting the paper to separate the printed paper from the roll. The paper cutting mechanism 4 may be a manual tearing knife or an automatic cutter. As shown in FIG. 9, the automatic cutter 4 includes a fixed blade 41 and a movable blade 42 which are disposed oppositely, and the printing paper passes between the fixed blade 41 and the movable blade 42. Figure 10 is a schematic view showing a second embodiment of a paper bin in the paper accommodating device of the present invention. The present embodiment differs from the first embodiment in that the paper bin 22 includes a first side wall 221, a second side wall 224, a first bottom plate 222, and an arm. The first side wall 221 and the second side wall 224 are substantially perpendicular to the first bottom plate 222, and the three are integrally connected to form a paper-receiving space. The arm is divided into a first arm (not shown) and a second arm 2232, which are vertically disposed on the outer surfaces of the first side wall 221 and the second side wall 224, respectively, and are symmetrical to each other. When the paper bin 22 is engaged with the paper bin seat 21 shown in Fig. 7, the first arm and the second arm 2232 are separated from each other by the J's bayonet 21 左 left Cao 211a and the right Cao 212a S. In this embodiment, the roll paper R is directly placed into the paper-receiving space of the paper bin 22, and is supported by the first bottom plate 222 of the paper bin. During the printing process, the paper is rolled and conveyed in the paper bin by the paper roll. The method of installing the web R is the same as that of the above embodiment, and details are not described herein again. According to the paper accommodating device of the present invention, the detecting mechanism can issue the paper out signal in time when the remaining amount of the printing paper is smaller than the distance between the detecting mechanism and the printing mechanism. Compared with the prior art, the detecting mechanism can accurately determine the amount of paper left in the printing paper, which helps the printer to accurately issue a paper out warning, thereby reducing unnecessary trouble for the user. At the same time, the invention can effectively avoid the occurrence of incomplete printing and maximize the utilization of the remaining paper. The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim

A paper holding device for a printer, comprising:

Paper bin

a paper bin detachably mounted in the paper bin, and an auxiliary passage for the printing paper to pass therethrough is formed between a bottom outer surface thereof and the paper magazine seat;

A detecting mechanism is mounted to the paper bin for detecting the presence of printing paper in the auxiliary passage.

2. The paper carrying device of the printer according to claim 1, wherein the paper bin comprises: a first bottom plate having a bottom outer surface forming the auxiliary passage with the paper bin; the first side wall Provided on one side of the first bottom plate;

A shaft extends perpendicular to the first side wall, and a core of the paper feed spool is disposed thereon, and both ends thereof form an arm positioned on the paper magazine seat.

3. The paper carrying device of the printer according to claim 1, wherein the paper bin comprises: a first bottom plate having the bottom outer surface forming the auxiliary passage with the paper bin;

The first side wall and the second side wall are disposed on opposite sides of the first bottom plate; wherein the outer sides of the first side wall and the second side wall form an arm positioned on the paper bin base.

4. The paper carrying device of the printer according to claim 2 or 3, wherein the left side wall and the right side wall of the paper bin have respectively positioning grooves that cooperate with the arms.

The paper carrying device of the printer according to claim 4, wherein the bottom wall of the paper bin base is formed by a second bottom plate, wherein the second bottom plate and the first bottom plate form an arc shape The auxiliary channel.

6. The paper carrying device of the printer according to claim 5, wherein a plurality of rollers are disposed on the second bottom plate of the paper bin.

The paper carrying device of the printer according to claim 2 or 3, wherein the outer surface of the first bottom plate is provided with a plurality of ribs extending in the width direction of the auxiliary passage.

The paper carrying device of the printer according to claim 1, wherein the detecting mechanism is a photoelectric sensor or a swing arm type sensor.

A printer comprising a lower case, an upper case hinged to the lower case, a paper holding device and a printing mechanism disposed in the lower case, wherein the paper holding device is according to claim 1 A paper holding device according to any one of the preceding claims.

10. The printer according to claim 9, further comprising a paper cutting mechanism disposed downstream of the printing mechanism, wherein the printing mechanism includes a print head disposed on the lower casing and disposed at the The rubber roller of the housing is described.