JPS63236068A - Electrophotographic printer - Google Patents

Abstract

PURPOSE:To always obtain stable printing quality by adding a toner scattering preventive mechanism to a guide part. CONSTITUTION:The titled printer is provided with a transfer charge part 1 for transferring a toner on a photosensitive drum 2 onto a form 10, and a form run guide part 5 having a long lower roller 3 and an upper roller 4 containing carbon, for executing a guide of the form 10 which has passed through this transfer charge part 1, and also, for bringing static electricity in the course of running of printing paper to a prescribed decrease and preventing a toner scatter. That is, the long lower roller 3 has a function for pinching and running the form 10 by a separate driving source together with the upper roller 4, and also, decreases static electricity held by the form 10 which has passed through the transfer charge part 1. Also, the fixed form guide part 5 guides the form 10 to a toner fixing part of the next process so that stable printing quality can always be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electrophotographic printer, and particularly to an electrophotographic printer having a paper running guide section that guides paper that has passed through a transfer charger section.

[Conventional technology]

In a conventional electrophotographic printer, as shown in FIG. 2, the paper that has passed through a transfer charger section 6 and holds static electricity is moved between a fixed paper guide section 7 and a moving show drawer roller 8. The short upper roller 9 has a mechanism for receiving the sheets in parallel when viewed from the paper running line.

[Problem that the invention seeks to solve]

However, in the above-mentioned conventional electrophotographic printer, the paper traveling guide section receives the paper that has passed through the transfer charger section in a very unstable state, that is, the static guide section and the moving guide section. Therefore, there is a drawback that the degree of reduction in the static electricity held by the paper is different, and unfixed toner is scattered on the paper, causing print disturbances.

[Means for solving problems]

The electrophotographic printer of the present invention has two rollers as a mechanism for first receiving paper that has passed through a transfer charger section as a paper running section, namely a carbon-filled long lower roller and an upper roller. The guide includes a fixed guide portion.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of the present invention.

In the electrophotographic printer shown in FIG. 1, a transfer charger section 1 is a mechanism that transfers an image formed on a photosensitive drum 2 onto a sheet of paper 10, and both the sheet of paper 10 and the sheet of paper 10 are connected to each other by a printing section driving source (not shown here). It is also important to reduce the static electricity held by the paper 10 that has passed through the transfer charger section 1.

Next, the fixed paper guide section 5 guides the paper 10 to a toner fixing section (not shown here) for the next process.

Incidentally, if the rotating long lower roller 3 and the upper roller 4 each have a carbon component in their rubber roller portions, static electricity held by the paper can be easily removed.

〔Effect of the invention〕

By adding a toner scattering prevention mechanism to the guide section, the electrophotographic printer of the present invention can always obtain stable print quality, reduce troubleshooting time on the printer inspection line, and produce high print quality electrophotography at low cost. This has the effect of being able to supply

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, and FIG. 2 is a perspective view showing an example of the conventional whistle. 1.6...Transfer charger section, 2...
Photosensitive drum, 3...Rotating long lower roller, 4
・・・・・・Upper roller, °−5,
7...Fixed t. Paper guide section, 8... Show lower roller, 9
...Short upper roller, 10...Paper.

Claims (1)

[Claims] A transfer charge section for transferring the toner on the drum onto the paper, and a carbon-containing section that guides the paper that has passed through the transfer charge section, and also reduces static electricity to a certain extent while the printing paper is running and prevents toner from scattering. An electrophotographic printer comprising: a paper running guide section having a long lower roller and an upper roller.