JPS60131278A - Automatic opening and closing mechanism for press roller in automatic supply of sheet form paper - Google Patents

Abstract

PURPOSE:To bring an automatically supplied paper into close contact with a platen without generating raised parts or the like, by fitting a return spring to a press roller arm or a press roller to constantly maintain the press roller in contact with the platen. CONSTITUTION:To automatically supply a sheet form paper 14, the uppermost one of the sheets contained in a sheet cassette 11 is fed along a paper guide 15 by passing between feeding-in rollers 12, and when the leading end of the sheet passes by a sheet form paper sensor 8, a solenoid 1 is operated to attract a slidable member 2, thereby pulling the lower end of the press roller arm 3. At this time, the press roller 6 located at the upper end of the arm 3 is separated form the platen 7, so that the sheet form paper 14 inserted from the lower side is passed along the guide 15, and is fed between the platen 7 and the roller 6. When the sheet form paper 14 is fed to a predetermining printing position, the press roller 6 is pressed against the platen 7 by the force of the return spring 9, whereby the paper is clamped and fed, and is printed by a printing head 10. Accordingly, the sheet form paper can be favorably fed.

Description

[Detailed description of the invention] Normally, automatic paper feeding and automatic ejection of cut sheets requires a complicated guide to the four press parts, and moreover, the automatically fed paper does not stick tightly to the platen and swells. There were some drawbacks, such as the occurrence of

The present application was invented in view of these drawbacks, and its purpose is to install a press roller above the printing area of the printer, and to press the cut sheets fed from the cut sheet cassette installed at the bottom of the printer body. The press roller is opened (released) from the platen by the suction of the solenoid until the sheet of paper is detected by the sheet sensor and reaches a place where it can be printed.Then, the press roller closes and the sheet of paper is moved between the platen and the press roller. Printing starts when the paper is clamped, and when printing is finished, it is fed out by the rotation of the press roller and platen. The press roller is automatically opened and closed relative to the platen using the single sheet sensor, solenoid, and return spring to automatically feed, print, and print the sheets that are fed automatically in this way.
To provide an automatic opening/closing mechanism for a press roller when automatically feeding a cut sheet, which enables ejection.

To explain the embodiment now, the lower end of the press roller arm (3) is connected to the sliding member (2) of the solenoid (1), and the middle part of the press roller arm (5) is pivotally connected to the printer body (4). A press roller (6) is rotatably fixed to the upper end of the platen (3), and the press roller (6) is brought into contact with the platen (7) in a separable manner above the printing area of the platen (7). A single paper sensor (8) is provided at the bottom of the press roller arm (3), and the press roller arm (3) is connected to the press roller (6).
) is provided with a return spring (9) so that the press roller (6) is always in contact with the platen (7).

αυ is a print head, QB is a ticket cassette, α is a feed roller, 031 is a ticket automatic feed mechanism, α4 is a ticket sheet, and (151 is a paper guide).

Based on the above-mentioned configuration, in order to automatically feed the cut sheet Q4), the present invention first passes the topmost cut sheet A4 in the cut sheet cassette Ql) between the opposing feed rollers H, It is sent in the direction of the printing section along the guide (1j). When the leading edge of the cut sheet 0 passes in front of the sheet magnifying sensor (8), the sheet sensor (8) detects the inserted sheet α4), The solenoid (1) is actuated to attract the sliding member (2) and pull the lower end of the press roller arm (3). At this time, the press roller (6) located at the upper end of the press roller arm (3) is moved away from the platen. In order to separate, the cut sheet I inserted from below passes through the conveyor guide (19) and enters between the platen 00 and the press roller (6).

When the cut paper 0 bleed is fed to the predetermined printing position, the solenoid (1) is released, and the force of the return spring (9) presses the flap press roller (6) against the platen (7), and the cut paper It will be shaped to sandwich the tip of 04. After that, cut sheet 041
is printed by the print head H and discharged while being fed by the rotation of the press roller (6) and platen (7).

In this application, as described above, the middle of the press roller arm whose lower end is connected to the sliding member of the solenoid is pivotally connected to the printer body, the press roller is rotatably fixed to the upper end of the press roller arm, and the press roller is rotated. The upper part of the printing area of the platen is brought into contact with the platen, and a single sheet sensor is provided at the lower part of the platen, and a return spring is attached to the press roller arm or the press roller so that the press roller always comes into contact with the platen. It is possible to achieve the desired purpose because it is a % sign that this has been done.

[Brief explanation of drawings]

FIG. 1 is an overall side view of the press roller and platen in contact with each other to explain an embodiment of the present application, and FIG. 2 is a partial side view of the press roller and platen separated from each other. . Patent applicant: 1 person other than Japan Digital Institute Co., Ltd. Figure 1 Figure 2

Claims (1)

[Claims] (1) The middle of the press roller arm, whose lower end is connected to the sliding member of the solenoid, is pivoted to the printer body, the press roller is rotatably fixed to the upper end of the press roller arm, and the press roller is moved to the printing area of the platen. The top part contacts the platen, and a single paper sensor is installed at the bottom of the platen.
An automatic opening/closing mechanism for the press roller during automatic paper feeding of cut sheets, characterized in that a return spring is provided on the press roller arm or the press roller so that the press ruler always comes into contact with the platen. .