JPH0617592Y2 - Roller for paper feeding of recording device - Google Patents

Description

[Detailed Description of the Invention] (Field of Use of the Invention) The present invention relates to a recording device, in particular, a graphic by an output of a computer,
It relates to the structure of the roller of the recording paper feeding mechanism of the XY plotter that stores characters and the like.

(Prior Art) The prior art and its problems will be described with reference to FIGS.

FIG. 9 is a perspective view showing the structure of an XY plotter according to the prior art. 9-1 is a main body, 9-2 is a recording pen, 9-3 is a pen moving mechanism, 9-4 is recording paper, and 9-5. Is a recording paper feed roller.

The XY plotter shown in FIG. 9 has a mechanism for moving the recording pen in the X direction by an electric signal, and a mechanism for moving the recording paper in the Y direction at a right angle to the moving direction of the pen by another electric signal. Is a device for recording data according to the electric signal on recording paper.

FIG. 5 is a perspective partial view of the roller 9-5 used as the recording paper feeding means of the recording apparatus shown in FIG. 9, and the roller body 1 is integrally formed with the shaft 2.

As illustrated in FIG. 6, the outer periphery 1-2 of the roller main body 1 has an axial direction in order to increase the frictional force in order to avoid problems such as printing deviation when transmitting power to the recording paper. Groove 1-5
In addition, the tips 1-7 of the protrusions formed between the grooves 1-5 are often formed into an acute angle in expectation of biting on the recording paper.

Further, since the axial groove 1-5 is generally formed by milling or rolling using a cylindrical metal mass as a raw material, the tip 1-7 of the projection has a straight line in the axial direction. Since the leading edges 1-7 of the recording paper are continuous and cause continuous biting over the entire width of the recording paper, there is not a little risk of causing cutting of the recording paper.

As a countermeasure against this, a part of the recording paper is placed on the outer circumference 1-of the roller body.
A groove 1-6 in the circumferential direction is formed as shown in FIG. 6 so as to be able to escape from the protrusions 1-3 formed in 2 and secure the connection of the recording paper.

That is, as described above, the tips 1-7 of the protrusions are the grooves 1 in the axial direction.
It is formed on the basis of -5 to secure the frictional force with the recording paper, avoid the cutting of the recording paper due to the paper feeding operation, and prevent the sheet from meandering (deviation with respect to the paper traveling direction). Directional grooves 1-6 are provided.

FIG. 6 is a partial enlarged view of a side surface showing an example of an axial groove, and is an enlarged view of an outer peripheral portion of the example of FIG.

As described above, in the conventional roller body 1, the protrusion for obtaining the frictional force with the recording paper is formed on the outer periphery of the cylindrical metal block by machining, so that the manufacturing man-hours for forming the groove are largely consumed. In addition, there is a functional problem that the outer diameter deviation of the material causes variations in the dimensions of the projection tips, resulting in uneven frictional force transmitted to the recording paper.

(Object of the Invention) An object of the present invention is to obtain an inexpensive paper feed roller mounted on a recording apparatus and having stable frictional force with the recording paper.

(Summary of the Invention) The recording paper feeding roller of the present invention is constructed by laminating a roller body on the outer periphery of which thin plates having sawtooth-shaped projections are laminated, and the projections formed on the outer circumference are displaced in the circumferential direction. The feature is that they are laminated.

(Embodiment of the Invention) An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective partial view of a roller, showing that the roller body 1 is formed by laminating thin plates 1-1, which is the essence of the present invention.

It is the same as the prior art example shown in FIG. 5 that the laminated roller bodies 1 are supported by the shaft 2 and operate integrally.

FIG. 2 is a front view showing an example of the thin plate 1-1 forming the roller body 1 and having saw-toothed projections on its outer periphery.
FIG. 4 and FIG. 4 exemplify a state in which the thin plates 1-1 are laminated.

FIG. 3 is a projection 1 on the outer periphery of the thin plates when they are stacked.
-3 is an example in which the adjacent thin plates are sequentially displaced so as not to be in the same position, FIG. 4 shows the protrusions 1-3 formed on the outer periphery of the thin plates at the center of the groove of the adjacent thin plates. This is an example in which they are arranged in order so that they are located at.

As described above, in the roller body according to the present invention, the protrusions formed on the outer periphery thereof impart a frictional force to the recording paper, and since the protrusions are not arranged in a row in the axial direction, the shape of the tip of the roller body is formed. It is possible to avoid the risk of cutting the recording paper based on it.

Further, each thin plate 1-1 can secure stable accuracy by press punching and the like using the same die, and can be constructed at a large cost at low cost by utilizing rational means such as in-die lamination.

(Advantages of the Invention) Since the paper feeding roller mounted in the recording apparatus of the present invention has the above-mentioned configuration, it has an advantage of obtaining a stable frictional force with the recording paper at a low cost.

[Brief description of drawings]

FIG. 1 is a perspective view of a roller according to the present invention, FIG. 2 is a front view showing an example of a thin plate which forms the roller body, and has serrated projections on its outer periphery, and FIG. FIG. 4 is a front view (a) and a side view (b) of another example, and FIG. 5 is a roller according to the prior art. 6 is an enlarged perspective view showing a state of protrusions on the outer periphery of the roller body of the prior art, and FIG. 7 is an example of an axial groove formed on the outer periphery of the roller of the prior art. Fig. 8 is a schematic front view showing Fig. 8, and Fig. 8 is a partial side view showing an example of a groove in the same circumferential direction. FIG. 9 is an X for implementing the present invention.
FIG. 6 is a perspective view of a Y plotter. Explanation of reference numerals 1: roller body, 1-1: thin plate, 1-2: outer circumference, 1-
3: protrusions, 1-4: outer circumferential groove, 1-5: axial groove, 1
-6: circumferential groove, 1-7: tip of protrusion, 9-1: main body, 9-2: recording pen, 9-3: pen moving mechanism, 9-4: recording paper, 9-5: Roller for moving recording paper

Claims (2)

[Scope of utility model registration request] 1. A recording paper comprising a mechanism for controlling the movement of the recording pen by an electric signal and a mechanism for controlling the movement of the recording paper in a direction substantially perpendicular to the moving direction of the recording pen by another electric signal. In a recording device configured to record data according to the above electric signal, a roller of a drive device for transmitting the movement amount from the control device to the recording paper, and a thin plate having a serrated projection formed on the outer periphery thereof. A paper feed roller for a recording apparatus, which is configured by stacking the 2. The recording according to claim (1), characterized in that saw-toothed projections formed on the outer periphery of a thin plate constituting the roller are circumferentially displaced and laminated and fixed. Paper feed roller of the device