JPH05254683A - Printer - Google Patents

Abstract

PURPOSE: To provide a printer capable of easily attaching or detaching an automatic sheet feeder to or from a sheet feed port without clogging or the like by a static electricity of a printing sheet to be supplied by the feeder. CONSTITUTION: An electroconductive inlet guide 3 connected to an earth 5 is provided near a sheet feed port 2 for mounting an automatic sheet feeder, and a static eliminating brush of the feeder is brought into contact with this inlet guide 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printer, and more particularly to a printer in which an automatic paper feeder is attached to a paper feed port.

[0002]

2. Description of the Related Art Generally, an automatic paper feeder installed in a paper feed port of a printer presses a print sheet stacked on a paper table against a pickup roller and supplies the print sheet to the printer one by one. Is configured to. Therefore, static electricity is generated on the surface of the printing paper supplied from the automatic paper feeder, and when the printing paper having such static electricity is supplied to the printer,
Printing paper may cause paper jams. Therefore, a static elimination brush is provided at the sheet supply port of the automatic sheet feeder, and the static elimination brush removes static electricity.

[0003]

However, in the prior art, since the static elimination brush was connected to the ground portion of the printer to eliminate static electricity, the static elimination brush and the ground portion should be separated from each other when the automatic paper feeder is removed from the printer, for example. It was necessary to remove the ground wire connected. For this reason, conventionally, although it is possible to prevent the occurrence of a paper jam or the like due to static electricity, there is a problem that it takes time to attach and detach the automatic paper feeding device.

The present invention has been made in view of the above problems, and an object of the present invention is to prevent a print sheet supplied from an automatic sheet feeder from being jammed by static electricity and to feed the sheet. An object of the present invention is to provide a printer in which the automatic paper feeding device can be easily attached and detached from the mouth.

[0005]

In order to solve the above problems, a printer according to the present invention comprises a main body, a platen provided in the main body, a print head provided so as to face the platen, In a printer having a paper feed port formed in a main body and equipped with an automatic paper feed device, a conductive entrance guide connected to a ground portion is provided in the vicinity of the paper feed port, and the automatic paper feed device is provided in the entrance guide. The static elimination brush is made to contact.

[0006]

According to the present invention, a conductive inlet guide connected to the ground portion is provided in the vicinity of the sheet feeding port in which the automatic sheet feeding device is mounted, and the static elimination brush of the automatic sheet feeding device is brought into contact with this inlet guide. The static electricity removed by the static elimination brush can be dropped to the ground section without connecting the static elimination brush to the ground section of the printer with a ground wire or the like. Therefore, the printing paper supplied from the automatic paper feeder will not be jammed by static electricity, and the automatic paper feeder can be easily attached and detached from the paper feed port.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

In FIG. 1, reference numeral 1 denotes a main body of a printer according to an embodiment of the present invention, and a paper feed port 2 is formed on a rear surface portion of the main body 1. As shown in FIG. 2, an automatic paper feeding device 20 is detachably attached to the paper feeding port 2, and printing paper supplied from the automatic paper feeding device 20 is provided near the paper feeding port 2. An entrance guide 3 that leads to the paper transport mechanism 6 is provided. The inlet guide 3 is made of a conductive material such as metal, and is connected to the ground portion 5 via a ground wire 4.

The automatic paper feeder 20 is constructed as shown in FIG. 3, and a paper table 22 for stacking printing paper is provided in the paper feeder main body 21. A pickup roller 23 is provided above the front end portion of the paper table 22. The pickup roller 23 feeds the print sheets stacked on the paper table 22 one by one, and the upper and lower parts arranged in front of the paper table 22. Pair of paper feed rollers 24a, 24b
The printing paper sent out in step 2 is configured to be supplied to the printer from the paper supply port 25 formed at the front end of the paper feeding device main body 21. A static elimination brush 26 is provided in the paper supply port 24 as shown in FIG. 4, and the static elimination brush 26 is configured to remove static electricity generated on the printing paper.

The paper carrying mechanism 6 carries the printing paper guided by the inlet guide 3 to the printing mechanism 9.
For example, it is composed of a feed roller 7, a pinch roller 8 that is in contact with the feed roller 7, and a drive motor (not shown) that drives the feed roller 7.

The printing mechanism 9 prints dots on the printing paper conveyed by the paper conveying mechanism 6, and includes, for example, a platen 10, a print head 11 arranged to face the platen 10, and the print head 11. Platen 10
And a carriage 12 for performing parallel movement in the longitudinal direction (direction perpendicular to the paper surface). The carriage 12 is provided with an ink ribbon feeding mechanism (not shown) that winds the ink ribbon of the ink ribbon cassette 13 in synchronization with the movement of the print head 11. Further, at the front part of the upper surface of the main body 1, there is formed a paper discharge port 14 for discharging the print paper having passed through the print mechanism 9 to the outside.

In the printer configured as described above, when the printing paper P is supplied from the automatic paper feeder 20 as shown in FIG. 5, the static elimination brush 26 of the automatic paper feeder 20 contacts the entrance guide 3. Since the inlet guide 3 is connected to the ground portion 5 via the ground wire 4 as described above,
The static electricity removed by the static elimination brush 26 can be dropped to the ground portion 5 through the inlet guide 3.

Thus, in this embodiment, the automatic paper feeder 2
Since a conductive inlet guide 3 connected to the ground portion 5 is provided in the vicinity of the sheet feeding port 2 in which 0 is mounted and the static elimination brush 26 of the automatic sheet feeding device 20 is brought into contact with this inlet guide 3, The static elimination brush 2 does not have to be connected to the static elimination brush 26 of the sheet feeding device 20 and the ground portion 5 of the printer by a ground wire.
The static electricity removed in 6 can be dropped to the ground section 5. Therefore, the printing paper supplied from the automatic paper feeder 20 is not jammed by static electricity, and the automatic paper feeder 20 can be easily attached and detached from the paper feed port 2.

In the above embodiment, the static elimination brush 26 of the automatic paper feeder 20 is brought into contact with the inlet guide 3 of the printer when the printing paper P is supplied from the automatic paper feeder 20. As shown, the static elimination brush 26 may be kept in constant contact with the entrance guide 3 of the printer.

[0015]

As described above, the printer according to the present invention is provided with a conductive inlet guide connected to the ground portion in the vicinity of the sheet feed port in which the automatic sheet feeder is installed, and the automatic feed is provided in the inlet guide. By contacting the static elimination brush of the paper device, the static electricity removed by the static elimination brush can be dropped to the ground portion without connecting the static elimination brush to the ground portion of the printer with a ground wire or the like. Therefore, the printing paper supplied from the automatic paper feeder will not be jammed by static electricity, and the automatic paper feeder can be easily attached and detached from the paper feed port.

[Brief description of drawings]

FIG. 1 is a sectional view showing a schematic configuration of a printer according to an embodiment of the present invention.

FIG. 2 is a diagram showing a printer according to an embodiment of the present invention and an automatic paper feeder attached to a paper feed port thereof.

FIG. 3 is a schematic sectional view of the automatic paper feeder shown in FIG.

FIG. 4 is an enlarged view of part A shown in FIG.

FIG. 5 is an operation explanatory view of the same embodiment.

FIG. 6 is a view showing a modified example of the same embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Main body, 2 ... Paper feed port, 3 ... Entrance guide, 4 ... Ground wire, 5 ... Ground part, 7 ... Feed roller, 8 ... Pinch roller, 10 ... Platen, 11 ... Print head, 12 ... Carriage, 14 ... Paper discharge port, 20 ... Automatic paper feeding device, 26 ... Static elimination brush.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Internal reference number FI Technical indication location B65H 5/00 A 7111-3F H05F 3/02 U 7028-5G (72) Inventor Tadahiro Baba Kanagawa Prefecture 1423 1423 Shimotsuruma, Yamato City Yamato Works, Japan AIBM Co., Ltd. (72) Inventor Masahiro Shimizu 1623 14 Shimotsuruma, Yamato City, Kanagawa Prefecture Yamato Works, Japan AB (72) Inventor Shinichiro Hita 570 Ohni, Ohito-cho, Ohta-machi, Takata-gun, Shizuoka Tokyo Electric Co., Ltd. Ohito factory (72) Inventor Noboru Nita 570, Ohito-cho, Ohta-cho, Takata-gun, Shizuoka Tokyo Electricity Co., Ltd. Ohito factory

Claims (1)

[Claims] 1. A main body, a platen provided in the main body, a print head provided so as to face the platen, and a paper feed port formed in the main body to which an automatic paper feeding device is mounted. In the printer, a conductive entrance guide connected to a ground portion is provided near the paper feed opening, and the static elimination brush of the automatic paper feeding device is brought into contact with the entrance guide.