JPS5912205Y2 - printer print control device - Google Patents

Description

[Detailed description of the invention] This invention relates to a printing control device for a printer, and in particular to a continuous form that is easily cut out by making perforations at regular intervals based on a printing command signal from a printing control unit. A continuous form feeding mechanism such as a pin wheel that can print on a single form that has been cut to length, and is suitable for sending continuous forms, and a feed roller and a presser roller that are suitable for sending single forms. In a printer that is equipped with a single form feeding mechanism consisting of a single form feeding mechanism and prints by switching these form feeding mechanisms appropriately depending on the form, it is possible that the required form is not loaded, or even if the form is loaded, the form is This relates to a print control device that does not accept a print command signal from the print control unit into the printer unless the form feed mechanism is switched to a form suitable for sending the form. The purpose of this invention is to provide a printing control device that can prevent the accident of starting a printing operation when the form feeding mechanism for the form is not set. One embodiment will be described with reference to the drawings.

Figure 1 is a plan view of the main parts of this device, and Figure 2 is II of Figure 1.
- It is a sectional view taken along line II.

In the figure, reference numeral 1 denotes a pair of side frames arranged on the left and right sides of the printer, and only the right side frame is shown in FIG.

Reference numeral 2 designates a platen whose both ends are fixed to the side frame 1, and its front end surface (the left end surface in FIG. 2) is polished vertically and forms a printing surface.

A pair of parallel guide shafts 3 and 4 are fixed at both ends to the side frame 1, and support a carriage 6 supporting a print head 5 so as to be slidable in parallel with the longitudinal direction of the platen 2.

This print head 5 arranges a large number of print wires in a vertical line on the end surface facing the print surface of the platen 2, drives the print head 5 along the print line, and appropriately urges the wires toward the platen 2. Dot matrix type characters, numbers, etc. are printed via an ink ribbon 8 onto a continuous form 7a or a single form 7b disposed between the printer and the print head 5.

A drive shaft 9 is rotatably supported by the side frame 1, and is rotated as appropriate by a drive means such as a motor (not shown).

A pair of pin wheels 10 are supported on the drive shaft 9 so as to rotate together with the shaft and to be movable in the axial direction, and the pins fit into the feed holes 11 provided on both sides of the continuous form 7a. 12 on the circumferential surface.

This pin wheel 10 is fixed to a moving frame 13 as only one side is shown in FIG.
The pinwheel 10 is supported movably in the axial direction on the guide shaft 14, and is locked at any position on the guide shaft 14, thereby making the pinwheel 10 adjustable to match the width of the continuous form 7a. ing.

Reference numeral 15 denotes a rubber feed roller, which is fixed to a roller shaft 16.

The roller shaft 16 is rotatably supported by the side frame 1 at both ends.

17 is a drive pulley fixed to the drive shaft 9, 18 is a driven pulley fixed to the roller shaft 16, and 19 is both pulleys IJ 1
7 and 18, and the drive shaft 9 and roller shaft 16 are rotated synchronously by means of these coupling means.

20 is a support shaft rotatably supported by the side frame 1 parallel to the roller shaft 16.

This support shaft 20 rotatably supports a large number of arms 21, and these arms 21 rotatably support presser rollers 22 in pairs.

23 is a support shaft 20 that rotates integrally with the support shaft 20;
A spring 24 is hung between the horizontal part of the stopper and each of the arms 21, and urges each arm 21 clockwise in FIG. The presser roller 22 is urged toward the feed roller 15.

The lower end of the arm 21 is arranged so as to be able to come into contact with the vertical portion of the stopper 23.

25 is a manual operation lever fixed to the right end of the support shaft 20, and an operation knob 26 is fixed to the upper end.

At the bottom of the pivot point of the manual operation lever 25 there is a positioning 2.
Notches 27 are formed.

This notch 27 engages with a leaf spring 28 fixed to the side frame 1 to hold the manual operation lever 25 in either the operating position shown by the solid line in FIG. 2 or the inoperative position partially shown by the dashed line. are doing.

When the manual operation lever 25 is held in the operating position, the presser roller 22 is pressed against the feed roller 15 by the spring 24, and when the manual operation lever 25 is held in the inoperative position, the arm 21 is pressed against the feed roller 15.
Since the lower end of the presser roller 22 comes into contact with the vertical portion of the stopper 23, the presser roller 22 is held at a position apart from the feed roller 15.

Reference numeral 29 denotes a head of a photoelectric succession device as a third detection means fixed below the side frame 1, and has a bifurcated shape with an optical path 30 in the center.

A light source 31 is fixed to one side of this bifurcation, and a phototransistor 32 that senses the light emitted from the light source 31 is attached to the other side.
is fixed.

An actuating part 33 is formed at the lower end of the front manual operating lever 25, and when the operating lever 25 is in the inoperative position, the actuating part 33 blocks the optical path 30 and the phototransistor 32 is closed.
is turned off and the operating section 33 is in the operating position.
By retracting from 0, the phototransistor 32 is turned on and the operating position of the manual operating lever 25 is detected.

Reference numeral 34 denotes a pair of upper and lower guide plates for guiding the continuous form 7a, and guides the form 7a from the rear of the printer to the lower side of the feed roller 15.

The pair of guide plates 34 define a continuous form path 35 through which the form 7a passes.

The form 7a then passes between the feed roller 15 and the presser roller 22, passes between the platen 2 and the print head 5, and is pulled out to the pinwheel 10, and the feed holes 11 formed on both sides of the form are connected to the pinwheel. It is inserted so as to fit into the pin 12 of No. 10.

A first detection switch 36 is fixed to a machine frame (not shown) below the guide plate 34.

A lever 37 for opening and closing the first detection switch 36 has an operating end 37a bent into a dogleg shape and inserted into a through hole 38 formed in the guide plate 34.

Therefore, as shown by the solid line in FIG. 2, when the continuous form 7a is not within the continuous form passage 35, the first detection switch 3
6 is opened, and when the form 7a is inserted into the form passage 35 as shown by the dashed line, the first detection switch 36 is closed.

A guide plate 39 is formed by a pair of upper and lower thin plates bent into an arc shape, and forms a single form passage 40 for guiding the single form 7b.

41 is a shaft rotatably supported by the side frame 1, and integrally fixes the stopper 43.

This shaft 41 is rotated by an operating lever 49 fixed on the shaft 41, and can be fixed at any rotational position by tightening a screw 44.

Further, the stopper 43 has a plurality of comb-like stop portions 43a as shown in FIG.

This stop portion 43a passes through an opening 45 formed in each of the two guide plates 39, and comes into contact with the lower end of the single form 7b inserted into the single form passage 40 from above. The printing start position of the single form 7b is determined.

Reference numeral 46 denotes a second detection switch fixed to the machine frame (not shown), and a lever 47 for opening and closing the switch 46 has an operating end 47a bent in a dogleg shape and a guide plate. It is inserted into a through hole 48 shaped like 39.

In an apparatus having such a structure, when printing a continuous form 7a, the first detection switch 36 detects that the form 7a is loaded in the continuous form passage 35, as shown in FIG.
2, and detects that the manual operation lever 25 is held in the immovable position shown by the two-dot chain line in FIG. 2 and the presser roller 22 is separated from the feed roller 15. In the takeover device, the actuating section 33 of the manual operation lever 25 blocks the light from the light source 31, thereby turning off the phototransistor 32, so that the printing command signal from the printing control section can be accepted into the printer. Even if the continuous form 7a is loaded, when the presser roller 22 is in pressure contact with the feed roller 15, the actuating part 33 is retracted from the optical path 30, so that the phototransistor 3
2 is turned on, the print command signal from the print control section is not accepted.

When printing a single form 7b, the single form 7b is inserted into the single form passage 40, the stopper 43 is adjusted to set the single form 7b at the printing start position, and the manual operation lever 25 is brought into the operating position shown by the solid line in FIG.

As a result, the second detection switch 46 detects the single form 7b, and the phototransistor 32 is activated by the light from the light source 31 in the photoelectric succession device serving as the third detection means.
When the printer is turned on, a print command signal from the print control unit is accepted into the printer and the printing operation can be started. Even if a single form 7b is loaded, the presser roller 22
When the phototransistor 32 is away from the feed roller 15, that is, the phototransistor 32 is turned off, the print command signal is not received into the printer.

In this example, both forms are loaded.
Moreover, if the presser roller is in pressure contact with the feed roller, the printer can receive a print command signal from the print control section and perform the printing operation. By combining the three detection means described above, Of course, it is possible to add a function such as not accepting the print command signal into the printer when both forms are loaded.
.

As described in detail above, this invention uses a print command signal from the print control unit when no form is loaded in the printer, or when a mechanism for sending the form is not set even if a form is loaded. This makes it possible to prevent an accident in which a printing operation is started when a form is not loaded or when the form feeding mechanism is not set.

[Brief explanation of the drawing]

FIG. 1 is a plan view of essential parts showing an embodiment embodying this invention, and FIG. 2 is a sectional view taken along the line II--II in FIG. 1. In the figure, 2 is a platen, 5 is a print head, 7a is a continuous form, 7b is a single form, 10 is a pin wheel, 15 is a feed roller, 22 is a presser roller, 25 is a manual operation lever, 29
35 is a continuous form path, 36 is a first detection switch, 40 is a single form path, 43 is a stopper, and 46 is a second detection switch.

Claims (1)

[Scope of Claim for Utility Model Registration] In a printer that prints on a required form based on a print command signal from a print control unit, a continuous form feeding mechanism for sending continuous forms, and a continuous form feeding mechanism for sending the forms. A continuous form path for guiding, a feed roller that rotates in synchronization with the continuous form feeding mechanism, a presser roller that can press against and separate from the feed roller, and a manual mechanism for bringing the presser roller into contact with and separating from the feed roller. a single form feeding mechanism for feeding a single form comprising an operating member; a single form path for guiding the single form to the single form feeding mechanism; and a continuous form path in the continuous form path. a first detection means for detecting the presence or absence of a single form in the single form path; a second detection means for detecting the presence or absence of a single form in the single form path; a third detection means for detecting contact/separation of the single form; and a movable and adjustable stopper that engages with the paper edge on the insertion side of the single form and determines the printing start position of the single form, When the first and third detection means detect that a continuous form is loaded and the presser roller is in pressure contact with the feed roller, the second and third detection means detect that a single form is loaded, and When it is detected that the presser roller is separated from the feed roller, or when the first and second detection means detect that both the forms are not loaded, a print command signal is sent from the print control section. A printing control device for a printer, characterized in that it is provided with a control means for preventing acceptance.