JPH0229363A - Device for supply and discharge of sheet - Google Patents

Abstract

PURPOSE:To obtain a sheet supplying and discharging device for feeding a supplied sheet without bent by substantially linearly disposing a sheet tray, a sheet feeder, a printer, and a sheet discharger. CONSTITUTION:A sheet supply roller 1, a sheet tray 3, a printer 5, a sheet feed roller 6, a pinch roller 7, a platen 9, a printing head 8, a sheet discharging roller 11, and a sheet discharge pinch roller 16 are so composed as to be disposed substantially linearly. A sheet 2 is fed substantially in a flat state in a direction of an arrow A. Even if the thickness of the sheet is varied, intervals between the roller 1 and the tray 3, between the platen 9 between the rollers 6 and 7 and the head 8, and between the rollers 11 and 16 are merely slightly altered, and the sheet 2 can be smoothly fed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a paper feed/discharge device that is attached to a small printer that is connected to or built into a personal computer, word processor, or the like.

(Prior Art) In recent years, with the advancement of office automation, personal computers, word processors, and the like have become widespread in workplaces and homes. In particular, printers are in great demand because they are used connected to or built into devices such as word processors.

Furthermore, printers having a paper feed/discharge device that automatically supplies cut sheets or postcards that have been cut to a predetermined size in advance in response to a signal from the printer have also become popular.

This type of conventional paper feeding/discharging device will be described with reference to FIGS. 3 and 4, taking a thermal type printer as an example. FIG. 3 is a perspective view of a conventional paper feed/discharge device, and FIG. 4 is a sectional view of a main part of the conventional paper feed/discharge device connected to a printer.

In FIG. 4, a paper tray 3 that accommodates paper 2 and has a paper feed roller 1 disposed on the top surface of its lower end is biased by a spring 4 disposed on the bottom surface of the paper tray 3, and the paper tray 3 is biased by a spring 4 disposed on the bottom surface of the paper tray 3, and the paper tray 3 is biased by a spring 4 disposed on the bottom surface of the paper tray 3. I'm pushing it to 1. - The printer section 5 shown surrounded by a dotted chain line includes a paper feed roller 6 and a pinch roller 7 that nip and feed out the paper 2, a print head 8 that prints on the paper 2, and a platen 9 that serves as a stand for the print head 8. A paper guide 10 is provided which guides the paper 2 fed by the paper feed roller 1 to the paper feed roller 6. A paper ejection roller 11 and a paper ejection guide 12 are provided to receive the paper 2 that has passed through the print head 8 and platen 9 described above.

In addition, a paper separation claw 1 that peels off the paper 2 sent out by the paper feed roller 1 one by one is placed at the lower end of the paper tray 3 mentioned in "2".
3 is provided.

FIG. 3 is a perspective view showing the appearance of the paper feed/discharge device.

The paper feed roller 1, paper tray 3, paper discharge roller 11, and paper discharge guide 12 described above are integrated into the paper feed/discharge device.

The operation of the paper feeding and discharging device configured as described above will be explained.

When the paper 2 is fed to the printer section 5 by the paper feed roller 1, the paper 2 is fed by the paper feed roller 6 of the printer section 5 every time one line of printing is completed, and the printed paper 2 is ejected by the paper ejection roller 11. .

(Problem to be Solved by the Invention) However, in the above configuration, the printer is configured such that the paper 2 is
The paper is bent in an arc shape by the paper guide 10 and is ejected in the same direction as the paper feeding direction. Due to the structure in which the rollers 11 are arranged, thin paper 2 is fed with a small force, but thick paper 2 is hard to bend due to its rigidity, and not only does it require a large force, but also the ejected paper 2 There was also the problem that it would tend to curl and be difficult to return to its original shape, or it would get caught in the middle. Some printers have a structure that feeds the supplied paper without bending it in the same direction, but there is a problem in that there is no paper feeding/discharging device compatible with this.

The present invention solves the above problem and provides a paper feeding/discharging device that feeds paper without bending it.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides a paper tray that accommodates one sheet of paper, a paper feeding device that supplies paper in response to a signal from a printer, a printing device of a printer, The printer and paper ejection device for printed paper are arranged in a substantially straight line (Function) With the above configuration, regardless of the thickness of the paper, the fed paper can be placed inside the printer in a flat state. It was sent and printed as it was,
Since the ejected paper is not bent, it is fed smoothly and with a small force without getting caught inside, and there is no tendency to curl.9 (Example) An example of the present invention is shown in Figs. This will be explained with reference to FIG.

FIG. 1 is a sectional view of the paper feed/discharge device according to the present invention attached to a word processor with a built-in printer, and FIG. 2 is a perspective view of the word processor with a built-in printer.

In FIG. 1, this embodiment is different from the conventional example shown in FIG. The printer section 5 of the printer 15 is arranged linearly on one plane between the paper feeding device and the paper ejecting device, and the paper guides 10 of the printer section 5 are arranged as a pair with opposing planes.・Then, move the paper ejection guide 12 to the paper ejection roller 11.
The change is to a paper discharge pinch roller 16 that pinches the paper 2 between the paper 2 and the paper 2.

Note that the single paper tray 3 is supported by a hinge shaft 17 in the cabinet 14.

Since the rest remains the same, the same components are given the same reference numerals and their explanations will be omitted.

The operation of the paper feed/discharge device of the printer having such a configuration will be explained. Paper 2 cut to a predetermined size in advance is stored in paper tray 3. Paper tray 3 is 1.
With the hinge shaft 17 as a fulcrum, the paper 2 is pressed clockwise by the spring 4 against the paper feed roller 1. The paper feed roller 1 is made of rubber which has a large coefficient of friction with the paper 2, and is driven by an electric motor (not shown) or the like, and is electrically connected to the printer unit 5 and operates in conjunction with it. When a paper feed signal is received from the printer section 5, the paper feed roller 1 rotates and supplies the paper 2 to the printer section 5. At this time, the paper 2 is fed one by one by the paper separation claw 13. Further, the next paper 2 is not supplied until the paper 2 is discharged from the printer section 5. The printer section 5 prints on one sheet of paper 2 while pressing it with a platen 9 and a print head 8, and feeds the line with a sheet feed roller 6 and a pinch roller 7. The printed paper 2 sent out from the printer section 5 is held between a paper discharge roller 11 and a paper discharge pinch roller 16 and discharged to the outside.

In addition, as shown in FIG. 1, a paper feed roller 1, a paper tray 3
．． The printer unit 5, the paper feed roller 6 and the pinch roller 7, the platen 9 and the print head 8, and the paper ejection roller 11 and the paper ejection pinch roller 16 are arranged in a nearly straight line, and one paper 2 The platen 9 and print head 8 between the paper feed roller 1 and the paper tray 3, and between the paper feed roller 6 and the pinch roller 7 are During this period, the distance between the paper ejection roller 11 and the paper ejection pinch roller 16 changes only slightly, and the paper 2 is smoothly fed.

In this embodiment, a word processor with a built-in printer is used as an example of the printer 15, but if the structure of the printer is such that the fed paper can be ejected in a substantially flat state, a word processor with a built-in printer may be used. It may be another information processing device or a single printer.

Further, although a combination of rubber paper feed roller 1 and pressure bonding using a spring 4 is used, paper may also be fed by a method using vacuum suction.

(Effects of the Invention) As explained above, according to the present invention, the paper feed device that supplies paper, the printer section, and the paper discharge device that discharges printed paper from the printer are arranged substantially in a straight line. Therefore, it is possible to obtain a paper feeding and discharging device that allows even thick paper to be fed smoothly without getting caught in the middle, and does not cause curling. 6. Since the paper is not bent, the feeding force is small, and the printing surface on which the paper is set in the device Since the printed surfaces are oriented in the same direction, a sheet feeding/discharging device with fewer setting errors can be obtained. In particular, it becomes an effective paper feeding/discharging device when printing on postcards.

Furthermore, since the printed paper is fed after being ejected by the ejecting device, a highly reliable and easy-to-use sheet feeding/discharging device that does not cause paper jams can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a printer installed in a paper feed/discharge device according to the present invention, FIG. 2 is a perspective view of a word processor equipped with a printer, FIG. 3 is a perspective view of a conventional paper feed/discharge device, and FIG. FIG. 4 is an enlarged cross-sectional view of main parts when a conventional paper feed/discharge device is connected to a printer. DESCRIPTION OF SYMBOLS 1...Paper feed roller, 2...Paper, 3...Paper tray, 4...Spring, 5...Printer section, 6
... paper feed roller, 7 ... pinch roller,
8...Print head, 9...Platen, 10...
-Paper guide, 11... Paper ejection roller, 12... Paper ejection guide, 13... Paper separation claw, 14... Cabinet, 15... Printer, 16... Paper ejection pinch roller. 17...Hinge axis. Fig. 1 15-Prifter 16-Kuchoshipi) Narora +7-T
il axis fig. fig. 12, - month F # tf id

Claims (2)

[Claims] (1) A paper tray that stores multiple sheets of paper cut into predetermined sizes, a paper feeder that supplies the above-mentioned paper to the printer section in response to a signal from the printer section, and a paper feeder that supplies the printed paper to the printer section. In a paper feed/discharge device consisting of a paper discharge device that discharges paper from
A paper feeding and discharging device characterized in that the paper tray, paper feeding device, printer section, and paper discharging device described above are arranged so that a paper movement path is substantially linear. (2) The paper feed/discharge device according to claim (1), wherein the paper feed device is configured to feed the next paper after the paper is discharged by the paper discharge device.