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Roll paper holding mechanism and printer

A clamping mechanism, web technology, used in printing devices, printing, winding strips, etc.

Inactive Publication Date: 2005-11-02
STAR MICRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even after the printing process is finished, there are cases where the inertial force corresponding to the weight of the roll paper still acts on the roll paper, so that the rotation of the roll paper does not stop at the same time as the end of the printing process. Occurrence of overrun due to continued rotation

Method used

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  • Roll paper holding mechanism and printer
  • Roll paper holding mechanism and printer
  • Roll paper holding mechanism and printer

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0028] figure 1 Indicates a small printer suitable for use in electronic cash registers, etc. In the printer 1 , its external shape is formed by a housing 10 and an end cap 20 which is openably connected to the housing 10 . figure 1 is a perspective view showing the state of the closed end cap 20, and figure 2 It is a perspective view showing the state where the end cap 20 is opened. FIG. 3 is a side sectional view showing a state in which the end cap 20 is closed.

[0029] Such as figure 1 As shown in FIG. 3 , the housing 10 has a box-like shape and includes a bottom plate 11 , a pair of left and right side plates 12 , a front plate 13 and a back plate 14 . A roll paper holding unit (holding unit) 15 having a substantially semi-cylindrical shape is formed at the rear of the housing. The roll paper holding unit 15 is drop-in type, and is formed by left and right rear plates 16 and curved plates 17 into which the roll paper 30 to be loaded falls. Behind the side panel 12...

no. 3 example

[0063] Image 6 , FIG. 7(a) and FIG. 7(b) are schematic views showing a third embodiment, in which the side of the web 30 is squeezed by the self-weight of the web 30. In this embodiment, the roll paper holding unit (clamping unit) 90 has a drop-in type, and is assembled from a pair of left and right pressing plates (pressing members) 92 . The pressing plate 92 has a rectangular shape, is longer than the maximum diameter of the rolled paper 30, and is combined so that in a state where the rolled paper 30 is loaded, the two plates extend vertically and face each other in parallel so as to be clamped therebetween. Web 30.

[0064] In each extruded plate 92, outside its end ( Image 6 , Fig. 7(a) and Fig. 7(b) in the lower part) form the shaft seat 92a, and the support shaft 93 extends horizontally through the shaft seat 92a. The supporting shafts 93 are fixed to the frame of the printer (not shown) etc. parallel to each other, whereby the pressing plate 92 can be turned in th...

no. 4 example

[0067] Figure 8 , FIG. 9(a) and FIG. 9(b) are schematic diagrams of a roll paper clamping mechanism, in which the side of the roll paper 30 is squeezed by the self-weight of the roll paper 30 in a manner similar to the third embodiment. In this embodiment, the roll paper holding unit (holding unit) 100 has a shaft support type in which the roll paper 30 is rotatably supported by a pair of left and right idler rollers 101 inserted into the core member 32 . The idler rollers 101 are rotatably supported by a pair of left and right pressing plates (pressing members) 102, respectively. The extrusion plates 102 are similar to the extrusion plates 92 of the third embodiment, and have shaft seats 102a at their respective lower ends. Via support shafts 103, which respectively pass through shaft seats 102a and are fixed to an unshown frame, the extruded plate is rotatable in the direction of arrow F-G in FIG. 9(a). Each idler 101 is rotatably supported in the widthwise middle of the ...

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PUM

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Abstract

To draw out sheet with constant or approximately constant driving force in the state in which load is applied to rolled sheet in order to prevent over-run regardless of a diameter and weight of the rolled sheet and to stably operate a driving part such as a motor for drawing out the sheet.

Description

technical field [0001] The present invention relates to a web holding mechanism that rotatably holds a web at a predetermined position, rotates the web by pulling out a guide portion of the web, and, more particularly, relates to a Roll paper clamping mechanism with roll paper side structure. The invention also relates to a printer comprising such a web clamping mechanism. Background technique [0002] Such a web is often used in small printers. The web is rotatably held by a drop-in type structure, in which the web falls into the housing space, or by a shaft-supported type structure, in which a core member is supported by a shaft and then pulled by a motor. Paper output for printing processing. When the paper is pulled out for printing processing, the web is rotated. Even after the printing process is finished, there are cases where the inertial force corresponding to the weight of the roll paper still acts on the roll paper, so that the rotation of the roll paper does ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J15/04B41J15/16B65H16/02
CPCB41J15/16B41J15/042
Inventor 望月康文小川健志增田雄二
Owner STAR MICRONICS