JPH0595746U - Roll paper holding structure - Google Patents

Abstract

(57) [Summary] [Structure] A projection having an inclined surface 13 in one direction by supporting the winding core 11 of the roll paper 2 on the inner top surface of the roll paper cover 1 which rotates around the projection 9 of the upper case 5 as a fulcrum. A holding rib 3 having an auxiliary rib 15 extending from the end of the guide surface to the inner point surface of the roll paper cover, the protruding surface having the same height as the portion 10 and the guide surface;
The auxiliary guide 16 located outside the guide surface is formed.
The holding rib 3 moves while the roll paper cover 1 is open. Holding ribs 3 with the roll paper cover 1 closed
The lower part of the holding rib 3 enters the recess 14 of the upper case 5 and regulates the left and right movements of the holding rib 3. [Effect] Quality problems occurring during paper operation are reduced. In addition, the work time required for roll paper replacement can be shortened, and a compact and easy-to-use printer is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a holding structure for roll paper supplied to a printer or the like.

[0002]

[Prior Art]

 A representative example of the conventional technique is shown in FIG. FIG. 6 is a cross-sectional explanatory diagram of a holding unit that holds the roll paper 52. The roll paper is rotatably supported by the protrusion 60 of the holding rib 53 fixed to the lid 58 that constitutes the lower side of the roll paper insertion space, and one of the holding ribs 53 is easily deformed. The paper is attached / detached by fixing the roll paper by engaging the through hole of the winding core 61 with the protrusion 60 while pressing and expanding the elastic force of the holding rib 53 on the deformed side.

[0003]

[Problems to be solved by the device]

 However, the above-mentioned conventional technique has the following problems. (1) In recent years, printers have become smaller, and the roll paper and paper feed mechanism are close to each other. Therefore, when setting the roll paper to the mechanism part, peel off the roll end part of the adhesive roll paper and roll the paper with one hand. Holding the paper and inserting the recording paper pulled out with the other hand into the predetermined position of the paper feeding mechanism, setting the roll paper was very troublesome and the workability was poor. (2) Since the roll paper is set using both hands, a large amount of pull-out is required, and when the roll paper cover 51 is attached without restricting the extra recording paper pulled out, it may be pinched or stuck. It entered the feeding mechanism at an angle and caused a paper jam. (3) The roll paper holder is easily deformed. When it deforms inward, it causes a paper feed failure because it applies lateral pressure to the core or roll paper, and when it deforms outward, the roll paper comes off. As a result, the load of pulling out increased and paper feeding failure occurred. The present invention has been made to solve such a problem, and improves the insertability of the roll paper into the paper feed mechanism, the attachment of the roll paper to the holding rib, and the insertion of the recording paper. The purpose is to prevent quality problems.

[0004]

[Means for Solving the Problems]

 The roll paper holding structure of the present invention is a roll paper holding structure in which both sides of the through hole provided in the roll paper core are supported by the protruding portions of the holding ribs. It is characterized in that it has a roll paper cover movably mounted and provided with a holding rib for supporting the roll paper.

Further, when the roll paper cover is closed by disposing a concave portion that engages with the holding rib in the case, the holding rib and the concave portion are engaged with each other and the position of the holding rib in the roll paper width direction is restricted. Characterize.

Further, the protruding portion of the holding rib has at least an inclined surface from the guide surface that regulates the width direction of the roll paper, and the inclined surface is on the opening side when the case is opened, When the paper cover is closed, it is not located above the protrusion in the vertical direction.

Further, the holding rib has an auxiliary rib having the same height as the guide surface, and an auxiliary guide for restricting the movement of the roll paper in the width direction is arranged inside the roll paper cover. It is characterized by being.

[0008]

[Action]

 According to the present invention, since the roll paper cover having the holding rib for supporting the roll paper can be rotated with respect to the case in which the printer is installed, the roll paper can be opened from the wide opening to the roll paper cover. Can be set.

Further, by disposing the recessed portion that engages with the retaining rib in the case, the retaining rib and the recessed portion engage with each other, and the position of the retaining rib is regulated.

Further, since the protruding portion of the holding rib has at least an inclined surface from the guide surface that regulates the width direction of the roll paper, the roll paper expands the inclined surface, so that the rib expands to the outside and is easily attached and detached. Since the inclined surface is not located above the protruding portion in the vertical direction, the rib is not expanded due to the weight of the roll paper.

Since the holding rib has an auxiliary rib having the same height as the guide surface, it serves as a guide in the width direction of the roll paper, and the auxiliary guide serves as a guide for the roll paper when the roll paper cover is open.

[0012]

【Example】

 An embodiment of the present invention will be described with reference to FIGS. 1 and 2 show the state in which the roll paper cover 1 is closed when there is no roll paper, and FIG. 2 shows the state in which the roll paper cover 1 is opened and the roll paper is set. FIG. 4 shows that the roll paper 2 is inserted into the holding ribs 3, and then the recording paper 4 is inserted into the mechanical paper feeding mechanism 5 and discharged.

Next, the operation will be described. The paper feed mechanism 5 and the printing mechanism 7 are fixed to the lower case 6. An upper case 8 which constitutes an insertion space for the roll paper 2 is also fixed to the lower case 6. The protrusion 9 provided on the upper case 8 rotates the roll paper cover 1. When the roll paper cover 1 is closed, the protrusion 9 is provided on the opposite side of the paper feed mechanism unit 6 based on the protrusion 10 of the holding rib 3. Yes, and it is located symmetrically on the lower side. The holding ribs 3 are formed from the inner top surface (inner top surface) of the roll paper cover 1, and are fitted into the through holes of the core 11 to support the roll paper 2 and the side surfaces of the roll paper 2 and the core 11. A guide surface 12 for receiving the light is formed.

When the roll paper is set, when the roll paper cover 1 is rotated, the holding rib 3 and the protrusion 10 are also moved. When the roll paper cover 1 is opened, there is a large open space from the paper feed mechanism 5 to the protrusion 10, and the roll paper 2 is rolled into the roll 10 by engaging the protrusion 10 with the through hole of the winding core 11. Attach to the cover. Then, the recording paper 4 of the roll paper 2 is inserted into the paper feeding mechanism portion 5, and is passed through the printing portion by the paper feeding device rear portion 5 and then discharged to the outside of the case. The guide surface 12 is set in a size in consideration of the variation in the specified roll paper width and is located at a position facing each other, and the outer diameter is set to be smaller than the outer diameter of the roll paper 2. The protrusion amount of the protruding portion 10 is set within the elastic range of the holding rib 3, and even if the holding rib 3 is expanded, the width of the roll paper 2 is secured without expanding beyond the initial level, and the roll paper 2 can be set.

The inclined surface 13 is provided from the guide surface 12 that is the base of the protrusion 10, and its direction is located below the protrusion 10 with the roll paper cover 1 closed and the roll paper cover 1 is opened. The roll paper 2 is rotated about 120 degrees in the direction in which the roll paper 2 is set. If the opening angle is large, the inclined surface 13 comes up and the roll paper 2 is disengaged when it is fitted in the protruding portion. If the opening angle is small, it becomes difficult to insert the roll paper 2 and the roll paper cover 1 When the roll paper cover 1 is rotated according to the rotation angle, there is no slope on the perpendicular of the protrusion so that the roll paper once set will not come off from the protrusion due to the weight of the roll paper. .. Therefore, when the roll paper 2 is pushed in along the inclined surface 13 from the paper feeder structure 5 side, it is spread by the elasticity of the holding ribs 3, and the through hole of the winding core 11 engages with the protrusion 10.

When removing the roll paper 2 having a reduced diameter after use, when the roll paper is pushed in the setting direction, the end face of the inner diameter of the engaged core pushes the holding rib 3 along the inclined surface 13. Unfold from the protruding portion 10. In this way, the shape of the inclined surface 13 allows the roll paper 2 to be smoothly attached and detached by simply pushing the roll paper 2. After setting the roll paper 2 on the roll paper cover 1, the roll paper 2 remains engaged with the holding ribs 3, so that the roll paper 2 can be replaced with one hand, and the workability is remarkably improved. ..

FIG. 3 is a front sectional view of an embodiment of the present invention. The roll paper cover 1 to which the roll paper 2 is attached is shown in a closed state, and FIG. 4 shows a detailed view of the concave portion 14 of the upper case 8 and the holding ribs 3 arranged on the roll paper cover 1. ..

When the roll paper cover 1 is closed, the lower side of the holding rib 3 enters the recess 14 of the upper case 8. A sloped guide portion is arranged in the recess 14 so as to be easily inserted. The holding rib 3 has a margin so as not to contact the bottom surface of the concave portion 14 in the height direction, so that the closed state of the roll paper cover 1 is not affected.

By restricting the holding ribs 3 by the recesses, the influence of the deviation of the holding ribs 3 on the molding and the positional deviation of the roll paper 2 due to the external load can be improved, and more specifically, the holding ribs 3 will be described. Even if the lower side surface of the roll sheet 3 becomes smaller in the width direction and the roll paper 2 is loaded with lateral pressure, the inner side surface of the recess 14 is widened and the position in the width direction is corrected to eliminate the load. On the contrary, even if the holding rib 3 is widened and the engagement with the roll paper is disengaged, the width direction is restricted by the lower end of the holding rib 3 engaging with the concave portion 14 and the desired engagement amount is obtained. Further, the misalignment on the paper path with the paper guide surface provided in the paper feed mechanism 5 is also corrected. Further, in this embodiment, the concave portion is arranged in the upper case, but the same effect is obtained even when the concave portion is arranged in the roll paper cover and the convex portion which is engaged with the concave portion is arranged in the upper case.

FIG. 5 is a sectional view of the inside of the roll paper cover 1. The auxiliary rib 15 forms a protruding surface at the same height as the guide surface 12 on the holding rib 3 and is connected to the inner top surface of the roll paper cover 1 from the end of the guide surface 12. When the roll paper 2 is disturbed in the roll direction, it prevents the occurrence of problems such as paper jams due to different routes by pressing the spread in the lateral direction. Further, the holding ribs 3 are reinforced to ensure an elastic force that allows the roll paper 2 to be fitted and removed appropriately. Similar to the auxiliary ribs 15, the auxiliary guide 16 is provided with a countermeasure against troubles when the roll paper 2 is rolled up, and when the roll paper cover 1 is opened, the roll paper 2 is inserted and then the paper is pulled out in the lateral direction. The paper path has been regulated to make it easier to insert paper.

[0021]

[Effect of the device]

 As described above, according to the present invention, by rotating the roll paper cover, the roll paper can be easily set in a large open space, and after setting the roll paper, the roll paper remains engaged with the holding rib. As a result, the roll paper can be replaced with one hand, and the workability can be significantly improved.

Further, even if the lower side surface of the holding rib becomes smaller in the width direction and the roll paper receives a load of lateral pressure, it is corrected by the recesses and the load disappears. Even if the engagement of the holding rib is about to be disengaged, the width of the holding rib is regulated by engaging the lower end of the holding rib to the desired amount of engagement, and further, the paper guide mechanism 5 is provided with the paper guide mechanism. Differences on the paper path from the surface are also corrected.

Further, when the roll paper is pushed from the paper feed mechanism side along the inclined surface, it is spread by the elasticity of the holding ribs, the through hole of the winding core engages with the protruding portion, and the diameter after use is small. When removing the rolled paper, press the roll paper in the direction to set it so that the end face of the inner diameter of the engaged core spreads the holding rib along the inclined surface and disengages from the protruding part. As described above, the roll paper can be smoothly attached and detached simply by pushing it in.

Further, since the holding rib has an auxiliary rib having the same height as the guide surface, it serves as a guide in the width direction of the roll paper, and the roll paper rotates more than the paper feed amount, causing winding disorder. Even at this time, the recording paper did not spread in the lateral direction, and problems such as paper jams due to different routes were prevented.

Further, since the auxiliary guide serves as a guide for the roll paper when the roll paper cover is open, it is easy to set the roll paper on the protruding portion and when the paper is inserted into the paper feeding mechanism of the printer. Since it serves as a guide for the paper, it can be set in the predetermined direction in the mechanism section, so that the roll paper does not enter diagonally and paper jam occurs.

As described above, the present invention improves the insertability of the roll paper into the paper feed mechanism section, improves the setting property to the holding ribs, and prevents the quality trouble when the recording paper is inserted. The practical effect is great.

[Brief description of drawings]

FIG. 1 is a side view of a roll paper cover closed according to an embodiment of the present invention.

FIG. 2 is a side view showing an embodiment of the present invention with a roll paper cover open.

FIG. 3 is a front sectional view showing an embodiment of the present invention.

FIG. 4 is a detailed front sectional view showing an embodiment of the present invention.

FIG. 5 is a plan view of the inside of a roll paper cover showing an embodiment of the present invention.

FIG. 6 is an explanatory sectional view showing an example of a conventional technique.

[Explanation of symbols]

 1 51 Roll Paper Cover 2 52 Roll Paper 3 53 Holding Rib 10 60 Projection 13 Sloping Surface 14 Recess 15 Auxiliary Rib 16 Auxiliary Guide

Claims (5)

[Scope of utility model registration request] 1. A roll paper holding structure in which both sides of a through hole provided in a roll paper core is supported by projections of holding ribs, and a case in which a printer is mounted and a rotatably attached to the case. A roll paper holding structure having a roll paper cover having a holding rib for supporting the roll paper. 2. The case is provided with a concave portion that engages with the holding rib, and when the roll paper cover is closed, the holding rib and the concave portion engage with each other and the position of the holding rib in the roll paper width direction. 2. The roll paper holding structure according to claim 1, wherein the roll paper is restricted. 3. The protruding portion of the holding rib has at least an inclined surface from a guide surface that regulates the width direction of the roll paper, and the inclined surface is on the opening side when the case is opened. The roll paper holding structure according to claim 1, wherein when the roll paper cover is closed, the roll paper cover is not positioned above the protrusion in the vertical direction. 4. The roll paper holding structure according to claim 3, wherein the holding rib has an auxiliary rib having the same height as the guide surface. 5. The roll paper holding structure according to claim 1, wherein an auxiliary guide for restricting movement of the roll paper in the width direction is arranged inside the roll paper cover.