JPS63292152A - Form traveling guide plate - Google Patents

Abstract

PURPOSE:To reduce a component of force to a printing form, to reduce a variance of a potential difference, as well, and to decrease scattering of a toner and uneven printing, by providing a chevron-shaped rib against the form traveling direction. CONSTITUTION:A toner stuck to a photosensitive body 11 is transferred to a printing form 12 by a transfer charge unit 8. Thereafter, the printing form 12 is carried to a fixing unit 9, while sliding on a form traveling guide plate A in a state that an unstable particle form toner is placed as it is. The form traveling guide plate A is provided with plural pieces of chevron-shaped ribs 2. Each rib 2 is inclined by an angle theta to the right and left, respectively, against the form traveling direction (a) so that force in the horizontal direction is not applied in the course of feeding the form, therefore, as the printing form 12 travels, a contact part to the rib also moves, and when it has passed through the form traveling guide plate A, the whole surface of the printing form 12 is brought into contact with the rib 2, by which the variance of the potential is reduced, and scattering of the toner and uneven printing can be suppress.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a paper running guide plate, and particularly to a paper running guide plate used in an image forming apparatus and supporting the running of the paper after transfer.

[Conventional technology]

The conventional paper running guide plate has a third plate on top of plate 1.
As shown in the figure, ribs B are provided parallel to the paper running direction a, or as shown in Fig. It was something that was being done.

[Problem that the invention seeks to solve]

For this reason, the conventional paper running guide plate described above is
If the shape of the rib is parallel to the paper running direction, the contact area with the rib remains the same even when the printing paper moves, so the potential of this area changes, causing problems such as toner scattering and uneven printing. It had the disadvantage of being easy.

Further, if the shape of the rib is inclined in one direction with respect to the paper running direction, there is a drawback that a lateral force is applied to the printing paper during running, causing the running direction to change.

[Means for solving problems]

The paper running guide plate of the present invention is constructed by providing a plurality of V-shaped ribs on the plate in the paper running direction.

〔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.

The paper running guide plate shown in FIG. 1 includes a plate 1 and a rib 2 provided on the plate 1 and forming a V-shape with respect to the paper running direction a. Each rib 2 is inclined left and right by an inclination angle t with respect to the paper running direction a, so that no force is applied in either the left or right lateral direction while the paper is running.

FIG. 2 shows an image forming element 1 using the embodiment shown in FIG.
The toner adhering to the paper 1 is transferred onto the printing paper 12 by a transfer charger unit 8.

Thereafter, the printing paper 12 is conveyed to the fixing unit 9 while sliding on the paper running guide plate A with unstable particulate toner on it.

Naturally, when the printing paper 12 slides on the paper running guide plate (A), unstable particulate toner must not be scattered or the potential of the printing paper 12 must not vary greatly depending on the location.

This paper running guide plate A is provided with a plurality of V-shaped ribs 2, and each rib 2 has a direction in which the paper runs in the direction a.
Print paper 1 is tilted left and right by an angle θ to prevent lateral force from being applied while paper is being fed.
As paper 2 moves, the contact part with the rib also moves, and when the paper travel guide plate passes the person, the entire surface of the printing paper 12 is in equal contact with the rib 2, and the variation in potential is minimized. Toner scattering and uneven printing can be suppressed.

〔Effect of the invention〕

By providing the paper running guide plate of the present invention with V-shaped ribs in the paper running direction, it is possible to reduce the component force applied to the printing paper and reduce the variation in potential difference, thereby reducing uneven printing due to toner scattering. It has the effect of reducing

[Brief explanation of drawings]

FIG. 1 is a perspective view showing one embodiment of the present invention, and FIG. 2 is a perspective view showing one embodiment of the present invention.
This is an image forming apparatus using the embodiment shown in the figure. A... Paper travel guide plate, 1... Plate, 2, 13.14... Rib, 3...
・Paper feed cz-2, 4...Erase unit, 5・
・・Main charger unit, 6・・Head, 7・
...Development unit, 8...Transfer charger unit,
9... Fixing unit, 10... Cleaner unit,
DESCRIPTION OF SYMBOLS 11... Photoreceptor, 12... Print paper, a... Paper running direction, ρ, t'... Inclination angle. -+'~ Figure 1 Figure 2

Claims (1)

[Claims] a plate for supporting the running of the printing paper after toner is transferred from the photoreceptor to the printing paper until the printing paper is conveyed to the fixing unit; and a plate provided on the plate and having a V-shape with respect to the paper running direction. A paper running guide plate comprising a plurality of shaped ribs.