JPH01177575A - Electrophotographic printer - Google Patents

Abstract

PURPOSE:To prevent toner scattering and to obtain a stable print quality by providing a form guide whose surface is subjected to sand-blast treatment. CONSTITUTION:A printer is constituted to include a photosensitive drum 1, a transfer charger part 2, carrying rolls 4 and 5, and a form guide 6 having a sand-blast part A. The photosensitive drum 1 is used to form a print image in an electrophotographic printer, and the transfer charger part 2 functions to transfer toner on the photosensitive drum 1 to a print form. The print form 3 holding the static electricity passes between carrying rolls 4 and 5 and passes the transfer charger part 2 to transfer toner to the print form 3, and the static electricity on the print form 3 is gradually removed by the sand-blast face A of the form guide 6 after the print form is brought into contact with the form guide 6. Thus, toner scattering is prevented to obtain a stable print quality.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an electrophotographic printer, particularly an electronic printer including a paper guide for printing paper that has passed through a transfer charger section (transferring toner on a drum onto paper). Regarding photo printers.

[Conventional technology]

Conventional electrophotographic printers use molded products as they are for the travel guide section.

[Problem that the invention seeks to solve]

However, in the above-mentioned conventional electrophotographic printer, the contact area of the paper running guide (molded product) with the printing paper is large, so under certain environments (
It has the disadvantage of causing toner scattering, especially in low humidity conditions.

[Means for solving problems]

The electrophotographic printer of the present invention includes a paper guide (molded product) whose surface is sandblasted (surface roughness: 5 μm to 30 μm) to prevent toner scattering.

〔Example〕

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

FIG. 1 is a longitudinal sectional view showing one embodiment of the present invention.

The electrophotographic printer shown in FIG. 1 includes a photosensitive drum 1,
It is configured to include a transfer charger section 2, a conveyance roller 45, and a paper guide 6 having a sandblasting section A.

The photosensitive drum 1 is a part of an electrophotographic printer that forms a printed image, and the transfer charger section 2 serves to transfer the toner on the photosensitive drum 1 onto printing paper.

Here, the printing paper 3 holding static electricity is transferred to the transport roller 4,
5 and the transfer charger section 2, the toner is transferred to the printing paper 3, but the toner is removed when it comes into contact with the next paper guide.

〔Effect of the invention〕

The electrophotographic printer of the present invention uses a paper guide with a sandblasted surface in the paper running section after the toner transfer section to smoothly remove static electricity from the paper, prevent toner removal, and stabilize the paper. This has the effect that it is possible to obtain high printing quality.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing one embodiment of the present invention. 1...Photosensitive drum, 2...Transfer charger section, 3...Print paper, 4. A: Conveyance roller, 6: Paper guide, A: Sandblasting surface.

Claims (1)

[Claims] a photosensitive drum for forming a printed image with toner;
A pair of transport rollers for transporting the print paper, a transfer charger section for transferring the toner forming the print image on the photosensitive drum onto the print paper, and a transfer charger section for gradually removing static electricity from the print paper after transfer. An electrophotographic printer, comprising: a paper guide having a sandblasting surface.