JPH0480065A - Printer - Google Patents

Abstract

PURPOSE:To easily set paper, to make paper jamming hard to occur and to reduce an installation area by positioning a push tractor, a printing head and a horizontal platen on a vertical line with respect to the installation surface of a printer main body. CONSTITUTION:When the paper feed switch on the operation panel 6 provided to the upper surface of a printer main body 1 is pushed after unprinted paper is set, a push tractor 4 begin to drive and the paper is downwardly fed. The paper 3 passes between a printing head 7 and a horizontal platen 8 and stops when the leading end thereof comes to the position of a cutter 9. Thereafter, printing is started and the feed of the paper by the push tractor 4 and the printing due to the printing head 7 are repeated. Since the paper is downwardly fed, the printed paper 10 moves downwardly. When separate paper is set, the paper is reversely moved upwardly by again pushing down the paper feed switch and, since the leading end thereof is retracted to the position of the push tractor 4, the paper 3 is simply detached.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a printer, and more particularly to a printer having an improved paper feed mechanism.

[Conventional technology]

A second paper feed function used in traditional printers
This will be explained with reference to the configuration diagram in the figure. The operator places the unprinted paper 3 on the paper tray 12 into the printer rear IB of the printer main body 1.
Set it on the push tractor 4 prepared for. By pressing the switch on the operation panel 6 of the printer front IA, the paper is fed in the direction of the print front IA by the drive of the push tractor 4, passes between the print head 7 and the platen 14, and the leading edge of the paper is fed. It stops when it reaches the cutter 9 position. After that, printing is started in response to a command from the host device, and the printed paper 1o is transferred to the push tractor 4.
The paper passes through the cutter 9, passes over the sheet guide 15 at the top of the printer, and returns to the paper tray 12. After printing is finished,
When the operator cuts the paper at the cutter 9 position and presses the switch on the operation panel 6 again, the leading edge of the paper is caught by the reverse rotation of the push tractor 4 and stopped at the push tractor 4 position.

[Problem to be solved by the invention]

The paper feed function of the conventional printer described above has the disadvantage that it is difficult to set paper because the push tractor is located at the rear of the device. Additionally, since the paper curves over the platen, it is prone to jamming. Furthermore, since the print head, platen, and push tractor 4 are located substantially on a flat surface, there are drawbacks such as a large installation area.

[Means to solve the problem]

The printer of the present invention includes an unprinted paper tray located at the top of the printer body for placing unprinted paper, and a push tractor that attaches and drives the unprinted paper taken into the printer body from the unprinted paper tray. And is located under the push tractor and feet from the push tractor? a print head that prints on the printed paper; a horizontal platen located opposite the print head across the paper fed from the push tractor; and a printed paper located below the print head and the horizontal platen. The push tractor and the print head are located on a line perpendicular to the horizontal platen or the installation surface of the printer main body.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention seen from the side. In FIG. 1, the unprinted paper 3 on the unprinted paper tray 2 located at the top of the printer main body 1 is taken into the printer main body 1 through the slit IC on the top surface of the printer main body 1 and attached to the push tractor 4. It will be done. At this time, the operator opens the cover 5 on the front of the printer forward in the direction of the arrow and sets the unprinted paper 3 on the push tractor 4. After setting the unprinted paper 3, the operator presses the paper feed switch on the operation panel 6 on the top surface of the printer main body 1, so that the push tractor 4 starts driving and feeds the paper downward. The paper 3 passes between the print head 7 and the horizontal platen 8, and stops when the leading edge of the paper reaches the cutter 9. After that, printing is started according to a command from the host device, and the push tractor 4
The feeding by the printing head 7 and the printing by the print head 7 are repeated. Since the sheet is fed downward, the printed sheet becomes the printed sheet 10 and moves downward.

The printed sheets 10 are stacked on a printed sheet holder 11. After printing is completed, the operator cuts the printed paper 10 at the cutter 9 position. When replacing the paper with another paper, press the paper feed switch on the operation panel 6 again to move the paper upward and move the leading edge of the paper back to the position of the push tractor 4.
can be easily removed.

〔Effect of the invention〕

As explained above, in the present invention, the push tractor is placed above the print head, the push tractor is placed vertically, and paper can be set by opening the cover on the front of the printer, making it easy to set paper. There is a certain effect. Further, by making the paper travel path straight, paper jams are less likely to occur, and by arranging the push tractor, platen, and print head on a substantially vertical plane, the installation area can be reduced.

[Brief explanation of drawings]

Fig. 1 is a configuration diagram of an embodiment of the present invention seen from the side;
The figure is a configuration diagram of a conventional printer seen from the side. 1... Printer body, 2... Unprinted paper stand, 3
...Unprinted paper, 4...Push tractor, 5...
・Cover, 6...Operation panel, 7...Print head,
8...Horizontal platen, 9...Cutter, 10...Printed paper, 11...Printed paper holder, 2...Paper holder, printer desk, 4...Platen, 5. ...Sheet guide.

Claims (1)

[Claims] 1. An unprinted paper holder located at the top of the printer main body for placing unprinted paper, and an unprinted paper taken into the printer main body from the unprinted paper holder and driven. a push tractor; a print head located below the push tractor for printing on paper fed from the push tractor; and a horizontal platen located opposite the print head across the paper fed from the push tractor. and a printed paper stand located below the print head and the horizontal platen to stack printed paper, and the push tractor, the print head, and the horizontal platen are positioned against the installation surface of the printer main body. A printer characterized in that it is located on a vertical line. 2. Claim 1, wherein the push tractor is attached near the opening of the cover by opening the cover disposed on the front surface of the printer main body.
Printer listed.