JPH0229082Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a device for feeding sheet-like objects, and is particularly applicable to a feeding device for roll-shaped recording media used in facsimile machines, copying machines, printing devices, etc. It is about effective techniques.

BACKGROUND ART Conventionally, in a supply device for roll-shaped recording media (hereinafter referred to as paper) used in printing devices such as facsimile machines and copying machines, when the paper being used runs out, it is necessary to replace it. In order to perform this paper exchange without any trouble or waste, there is a paper final edge detection mechanism using a lever as a means for detecting the vicinity of the final edge of the paper or the final edge of the paper. For example, as shown in FIG. 1, a sheet of paper passes between the lever guide 1 and the paper final edge detection lever 2. When the paper passes through, the paper final edge detection lever 2 falls into the groove 3 of the lever guide 1, and the paper final edge detection lever 2 falls into the groove 3 of the lever guide 1. The stroke is used to press a detection micro switch 4 provided at the bottom to stop the printing device. If the paper final edge detection mechanism is not clearly distinguished between when it is used and when it is not used, malfunctions may occur. Therefore, the stopper 5 is slidably provided, and when not in use, it is manually moved so that the groove 3 of the lever guide 1 is covered with the stopper 5.

However, such a paper final edge detection mechanism has the drawback that since the stopper 5 is hidden behind the paper, it is possible to forget to switch between set and reset, resulting in malfunction.
Furthermore, since the shapes of the lever guide 1 and the stopper 5 are fixed, there is a drawback that the width of the paper that can be used is limited.

Purpose The purpose of the present invention is to provide a technology that eliminates the malfunction of the lever sensor and smoothes the feeding operation of the sheet-like object in a sheet-like object feeding device having a mechanism for detecting the final end of the sheet-like object using a lever sensor. It is about providing the means.

The above and other objects and novel features of the present invention will become apparent from the description of this specification and the accompanying drawings.

Configuration The configuration of the present invention will be explained together with examples.

FIG. 2 is a perspective view showing the main structure of an embodiment in which the present invention is applied to a printer, and FIG. 3A and B
2 is an enlarged sectional view of a main part of the embodiment shown in FIG. 2. FIG.

In FIG. 2, 10 is the printer cover, 1
1 is a paper path, 12 is a lever for detecting the final end of paper, and a support member 13 is attached to the printer body (not shown). One end of this paper final end detection lever 12 uses the stroke shown by arrow A to turn on (ON) a detection micro switch provided at the bottom of the position shown by reference numeral 14.
It is now controlled by OFF. 15
is a lever guide member that guides the paper final end detection lever 12, and as shown in FIGS. 3A and 3B, it is provided so as to be movable left and right on a support shaft 16 that is rotatably supported by the support member 13. ing. The head of the lever guide member 15 is provided with a non-use setting groove 15A with an R-shaped groove bottom, and the body thereof is provided with a concave paper final edge detection groove 15B. The corner portions of the lever guide member 15 that come into contact with the paper path 11 and the paper 17 are all rounded and have an oval shape.

Next, the operation of this embodiment will be explained.

When the paper final edge detection mechanism is not used, as shown in FIG. 3A, the lever guide member 15 is turned vertically by rotating the support shaft 16 by means or automatically in the direction of arrow B shown in FIG. Set groove 15A when not in use
The paper final end detection lever 12 is fitted and fixed, and the paper 17 is set so as to pass over it.

In addition, when using the paper final end detection mechanism, the lever guide member 15 is set in the non-use setting groove 15A.
By simply lifting the paper final end detection lever 12 fitted with the lever and passing the paper 17 between them, the lever guide member 15 will fall in the direction in which the paper 17 advances, and the setting for use is completed.

With this configuration, it is possible to eliminate the conventional malfunction caused by forgetting to set or reset the stopper.

Further, by moving the lever guide member 15 in the left-right direction, the paper can be set according to the paper width.

Also, the shape of the lever guide member 15 has rounded corners.
Since it is shaped like an oval, paper feed is smooth whether the paper final edge detection mechanism is in use or not.

Effects As explained above, according to the novel technical means disclosed in this application, the following effects can be obtained.

(1) By rotating the lever guide member,
Since the paper final end detection mechanism is set and reset, the operation can be easily switched between use and non-use, and malfunctions due to forgetting to set or reset can be prevented.

(2) By moving the lever guide member in the left and right direction, it is possible to accommodate any paper width, so there is no limit to the paper width dimension that can be used.

Although the present invention has been specifically explained above based on an example in which the present invention is applied to a printer, it goes without saying that the present invention is not limited to the above-mentioned example and can be modified in various ways without departing from the gist thereof. For example, the lever guide may have any shape as long as it fulfills its function.

Field of Application In the above explanation, the present invention was mainly applied to paper supply technology used in printing devices such as printers, which is the field of application that formed the background of the invention, but it is not limited to this, for example. It can also be applied to processing techniques that use synthetic resin sheets.

The present invention can be applied to at least those where it is necessary to detect the final end of a sheet-like object.

[Brief explanation of drawings]

FIG. 1 is a perspective view for explaining the problems of the conventional paper final edge detection mechanism, FIG. 2 is a perspective view showing the main structure of an embodiment in which the present invention is applied to a printer, and FIG. A and B are enlarged sectional views of essential parts of the embodiment shown in FIG. 2. 10...Printer, 11...Paper path, 12...
... Paper final edge detection lever, 13... Support member,
14...Position for pressing the detection micro switch, 15...Lever guide member, 16...Support shaft, 17...Paper.

Claims (1)

[Scope of utility model registration request] a detection lever that is rotatably provided on a support member to detect the final end of a sheet-like object; a detection switch that controls the drive of a printing device in accordance with rotation of the detection lever; and a detection switch that is rotatably provided on the support member. a support shaft provided on the support shaft, a lever guide member provided on the support shaft so as to be movable in the paper width direction, and a detection lever provided on the lever guide member and capable of holding the detection lever in a predetermined position. a final detection groove that is provided in the lever guide member and that engages with the detection lever as the detection lever rotates at the final end position of the sheet-like object; A sheet-like object supply device comprising: