Set-off prevention device of printing machine

An anti-smearing and printing machine technology, applied in printing machines, rotary printing machines, screen printing machines, etc., can solve the problems of surface characteristic changes, poor ink absorption, ink accumulation, etc., and achieve strong surface stability and low implementation cost Low, compact effect

Pending Publication Date: 2019-10-01
WUXI BAONAN MACHINE MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for those prints with poor ink absorption and thin paper, there will still be smudges
Moreover, when printing, due to the change of the paper size, ink accumulation will easily occur on the edge of the anti-smudge after a long time, and it is easy to change the surface characteristics during cleaning to cause paper smear

Method used

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  • Set-off prevention device of printing machine

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Experimental program
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Effect test

Embodiment Construction

[0011] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0012] figure 1 Among them, it includes the main first screw 1, the bearing 2, the shaft 3, the bearing 4, the clamping seat 5, the second screw 6, the rasp file 7, the paper guide roller 8 and so on.

[0013] like figure 1 As shown, the present invention is a printing machine anti-smudge device, including a shaft 3, a paper guide roller 8 is supported on the shaft 3 through a bearing 4, and the axial inner end of the bearing 4 passes through the inner boss of the paper guide roller 8 Shaft shoulder limit, the axial outer end of the bearing 4 is axially positioned by the positioning ferrule 11, the surface of the paper guide roller 8 is evenly wound around the file 7, and the file 7 is along the surface axis of the paper guide roller 8 Extending from one end to the other axial end, the two axial ends of the shaft 3 are respectively connect...

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PUM

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Abstract

The invention belongs to the technical field of ink printing equipment and relates to a set-off prevention device of a printing machine. The set-off prevention device comprises a shaft. A paper guideroller is supported on the shaft through bearings, the axial inner ends of the bearings are limited through inner boss shaft shoulders of the paper guide roller, the axial outer ends of the bearings are axially positioned through positioning clamping sleeves, the surface of the paper guide roller is evenly wound with filing skin in a spiral mode, the filing skin extends along the surface of the paper guide roller from one axial end to the other axial end, and each of the axial two ends of the shaft is connected with a support. The set-off prevention device is improved in pertinence to the faults of existing products of the same kind, by arranging the filing skin on the paper guide roller, it can be ensured that the surface stability is high, high duration and abrasion are achieved, skidding is not likely to occur, the set-off phenomenon and scratching marks are prevented, it is ensured that the print quality is not influenced, and the set-off prevention device is a necessary printing material of printing houses; and meanwhile, the set-off prevention device is compact in structure, reasonable in design, high in practicability and low in implementation cost.

Description

technical field [0001] The invention belongs to the technical field of ink printing equipment, and relates to an anti-smudge device for a printing machine. Background technique [0002] In offset printing production, due to the high-speed operation of the machine, the ink on the printed sheet passing the guide roller is not dry, and it is easy to cause smudges. The next printed sheet is stacked on it, and the ink of the previous printed sheet may be partially transferred to the next printed sheet. back, resulting in backside smudging. Dirt on the back will not only cause ink to stick to the back of the printed product, but also cause mottled graphics on the front, seriously affecting product quality, and even lead to the scrapping of the entire batch of products, especially in the dark parts of printed color products and spot colors. When printing on a large area, due to the thick ink layer, smearing on the back is a very easy failure. In addition, during the printing proc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41F22/00
CPCB41F22/00
Inventor 韩兵
Owner WUXI BAONAN MACHINE MFG
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