Photographic printing machine having translational cam mechanism for driving paper-pressing drum vertically lifting/lowering

A technology for translating cams and photocopiers, which is applied in the direction of printing and printing devices, and can solve the problems that other parts cannot be tolerated and exist in between.

Inactive Publication Date: 2007-04-18
LITE ON TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, whether the platen roller is driven by the platen roller support to approach the print head, or the print head is driven by the print head support to approach the platen roller, they are all driven by a curved path, so at least one rocker arm (that is, the platen roller) is required. Roller bracket or print head bracket) activity space, and this space can only be used as a space for the rocker arm to move, and other parts cannot be allowed to exist in between
In addition, whether it is the platen roller support or the print head support, since the force of the torque is used to drive the platen roller or the print head, the required rigidity makes the material of the support must use stronger metal parts. There is room for improvement in the energy consumption of the drive bracket

Method used

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  • Photographic printing machine having translational cam mechanism for driving paper-pressing drum vertically lifting/lowering
  • Photographic printing machine having translational cam mechanism for driving paper-pressing drum vertically lifting/lowering
  • Photographic printing machine having translational cam mechanism for driving paper-pressing drum vertically lifting/lowering

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Embodiment Construction

[0012] Refer to Figure 1. FIG. 1 is a schematic diagram of a photocopier 100 with a cam mechanism capable of driving a platen roller 150 to vertically lift and translate according to the present invention. Photocopier 100 includes a housing 110, on which is provided with a track 120, a translation cam 130, has a plurality of concave surfaces 135, a cylinder support group 140, a platen cylinder 150, a print head 160 and elastic device 170, 180. The roller bracket set 140 includes two pin brackets 144 , and each pin bracket 144 includes a shaft hole 142 and a roller 145 .

[0013] The translation cam 130 is installed on the track 120 in a manner that can move horizontally along the track 120 , and the roller support group 140 is placed on the translation cam 130 . Platen cylinder 150 is fixed on the cylinder bracket group 140 in a rotatable manner, wherein the shaft hole 142 of each pin bracket 144 of cylinder bracket group 140 is used to install the pressure cylinder 150, so ...

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PUM

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Abstract

A copy printer with a translational cam mechanism for driving the paper pressing drum to lift vertically is disclosed. A horizontally sliding translational cam has concave surface and convex surface on its profile to control the stroke of driven part. When said cam is sliding on a track, the roller on the drum supporter is rolling on the profile of cam to make the drum supporter and in turn the drum to move vertically, so close to or far from the printing head.

Description

technical field [0001] The invention relates to a photocopier, in particular to a photocopier with a translational cam mechanism capable of driving a platen roller vertically up and down. Background technique [0002] A general thermal sublimation / thermal transfer photocopier (Thermal Printer) has a thermal sublimation / thermal transfer printing head and a platen roller for carrying printing media. Usually, when the photocopier is not printing, the platen roller is separated from the print head. When the photocopier is printing, the print head needs to have sufficient contact with the platen roller so that the printing medium can be absorbed when it enters the space between the print head and the platen roller. Sufficient force to hold and ensure that the print head contacts the print media during the transfer process. [0003] In the prior art, the mechanisms for the proximity of the print head and the platen roller of the sublimation / thermal transfer photocopier are roughl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J11/20B41J2/32
Inventor 何慧君
Owner LITE ON TECH CORP
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