JPH0631992A - Form-feed mechanism of printer - Google Patents

Abstract

PURPOSE:To realize shapes proper to each form suction in a limited narrow space, and to ensure stable form suction and feed operation by manufacturing a separator in a movable type and interlocking the separator with the changeover of a feed mechanism. CONSTITUTION:A push-in type tractor feeder 1 and a separator 3 dividing the form path inlets of rollers 2 for friction-feed are provided. In the drawing (a), the separator 3 is brought down to the tractor feeder l side by throwing down a lever 4 for changing over form-feed to the left, the form path inlet for friction-feed is expanded, and a form 5 can be fed easily. In the drawing (b), the separator 3 is raised up by setting the lever 4 upright, the form path inlet for the push-in tractor feeder is expanded, and a form 6 can be supplied easily.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper feeding mechanism of a printing apparatus having a plurality of paper feeding means and having different paper inlets and a common paper outlet.

[0002]

2. Description of the Related Art In a conventional paper feeding mechanism of a printing apparatus of this type, a paper inlet is divided by a difference in a paper feeding method by providing a fixed separator.

[0003]

In the paper feeding mechanism of the conventional printing apparatus, since the position of the separator for dividing the paper suction port is fixed, if the separator is provided in a limited narrow space, the paper suction mechanism will be used. There are problems that the mouth is narrowed, the suction operation is apt to occur, the shape of the paper passage is improper due to the restriction of the separator, and the paper feeding accuracy is easily lowered.

[0004]

The mechanism of the present invention includes a push-in type tractor feeder and a friction feeder,
In a paper feed mechanism of a printing device in which the entrances of the paper passages of the feeders are different but the exits are the same, a movable separator provided at the entrance of the paper passage and the tractor feeder by moving the separator according to an external operation. And a lever for switching one of the paper passage entrances of the friction feeder so as to open it.

[0005]

The present invention will be described below with reference to the drawings.

FIGS. 1A and 1B are partial side sectional views of an embodiment of the present invention. A separator 3 is provided to divide the paper passage entrance of the push-in type tractor feeder 1 and the friction feed roller 2. FIG. 3A shows the case of friction feed, and FIG. 7B shows the state of push-type tractor feed. Each state is shown. In the case of (a), by tilting the paper feed switching lever 4 to the left, the separator 3 is tilted to the tractor feeder 1 side, the paper passage inlet for friction feed is expanded, and the paper 5 can be easily fed. . Further, in the case of (b), by raising the lever 4, the separator 3 is raised, the paper passage inlet for the pushing tractor feed is expanded, and the paper 6 can be easily fed.

[0007]

As described above, according to the present invention, by making the separator movable and interlocking with the switching of the feed mechanism, it is possible to realize a shape suitable for each sheet suction in a limited narrow space. As a result, it is possible to ensure more stable paper suction and feeding operations than before.

[Brief description of drawings]

1A and 1B are partial side sectional views of an embodiment of the present invention.

[Explanation of symbols]

 1 tractor feeder 2 roller 3 separator 4 lever

Claims (1)

[Claims] 1. A paper feed mechanism of a printing apparatus, comprising a push-in type tractor feeder and a friction feeder, wherein the entrances of the paper passages of the respective feeders are different but the exits thereof are the same. Type separator, and a lever for switching the separator by moving the separator in response to an external operation to open one of the paper passage inlets of the tractor feeder and the friction feeder. Paper feed mechanism.