JPH0447167Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention relates to a paper jam prevention mechanism in a printer, and in particular, the invention relates to a paper jam prevention mechanism in a printer. The present invention relates to a mechanism for preventing paper from being caught in a printer having a retractable body.

[Technical background of the invention] In devices such as various measuring instruments and calculators that measure electrical properties such as current and voltage, and mechanical properties such as rotation speed and vibration frequency, the measurement values, input numerical values, symbols, etc. In addition to displaying the displayed information, a printer is often installed to print out the displayed contents. There are also devices in which a printer is connected to various measuring instruments via cables.

FIG. 2 shows an example of the structure of a printer conventionally used in such cases, and includes a storage main body section 21 that is provided either integrally with equipment such as various measuring instruments or as a separate body. is formed such that the printer housing 30 can be stored therein. In this case, a plurality of guide rollers 23 are rotatably supported on opposing inner wall surfaces of the left and right side plates 22 constituting the storage main body 21, respectively, and are spaced apart from each other in the same horizontal direction. . These guide rollers 23 support the printer housing 30 so as to be movable back and forth via two guide rails 34 provided on the left and right side plates 31 of the printer housing 30, respectively. The printer housing 30 can be taken in and out of the storage main body part 21 smoothly. In addition, this printer housing 3
0 is provided with support rods 35 through the side plate 31, and by pulling out the starting end of the roll paper R for printing which is rotatably supported by these support rods 35, the front panel 32 can be printed. It is possible to supply printing paper 38 to the print head section 36 provided.

[Problems to be Solved by the Invention] By the way, when attempting to set the roll paper R in the printer housing 30 in a printable manner according to the conventional example described above, first, the printer housing 30 is placed in the storage main body section 2.
1 to support the roll paper R on the support rods 35 and guide the starting end of the roll paper R to the outside of the front panel 32 through the print head section 36.
This was done by storing it in At this time, the printing paper 38 pulled out from the roll paper R had a tendency to sag and hang down due to its own weight up to the front panel 32. For this reason, such slack portions in the drawn-out printing paper 38 are
When trying to store the printer casing 30 again after setting the roll paper R, there is a risk that it will get caught between the printer casing 30 and the storage main body 21, which is one factor that hinders the smooth operation of the printer. Ta.

“Purpose of the invention” The purpose of this invention is to
It is an object of the present invention to provide a paper pinch prevention mechanism for a printer that effectively prevents printing paper supplied from roll paper from being pinched between the storage body and the storage body.

[Means for Solving the Problems] In order to achieve the above object, this invention was constructed as follows.

That is, in this invention, the printer casing, which is arranged to be removable in and out of the storage main body, has a support rod that rotatably supports the roll paper, and has left and right side plates and front end surfaces of these side plates. Consisting of a front panel that is covered between the two and has a print head, and a bottom plate, the bottom plate can be opened and closed by pivoting only its rear end to the side plate. What made it possible is its structural features.

[Example] Hereinafter, an example of this invention will be described based on the drawings.

FIG. 1 shows an embodiment of this invention, in which a printer housing 10 is installed in a storage main body 1 that is integrated with or separate from equipment such as measuring instruments. It is stored in such a way that it can be put in and taken out.

That is, on each of the opposing inner wall surfaces of the left and right side plates 2 constituting the storage main body 1, at least one set of guide rollers 3 arranged at a required interval in the same horizontal direction; Below the guide rollers 3, support rollers 4 provided at appropriate positions on which a printer casing 10, which will be described later, can be placed and supported are rotatably supported.

On the other hand, the printer housing 10 that is removably stored in the storage main body part 1 formed in this way has left and right side plates 11 and these side plates 1.
The printer is comprised of a front panel 12 which is disposed between the front end surfaces of the printer 1 and has a print head section 16, and a bottom plate 13 which is attached so as to be openable and closable. Of these, two guide rails 14 are disposed on the left and right side plates 11, respectively, to sandwich and support the guide rollers 3 in the storage main body 1. Further, these side plates 11 are provided with support rods 1 for rotatably supporting the roll paper R for supplying the printing paper 18 to the printing head section 16.
5 are attached to each. Printer housing 10
The opening/closing structure of the bottom plate 13 in FIG.
As the side plate 1 is pulled out, the side plate 1 is separated from the support roller 4 so that the lid can be opened automatically.
1, the rear end of the bottom plate 13 is swingably supported via relative engagement means 17 such as a support shaft or a protrusion.

Next, the operation of the paper pinch prevention mechanism in the printer of this invention will be explained.

When it becomes necessary to set the roll paper R on the support rod 15 provided in the printer casing 10 so as to be able to print, pull out the printer casing 10 from the storage main body 1 to the required length, and then pull it out to the specified length. This can be done by rotatably supporting the roll paper R on the support rod 15. When pulling out the printer casing 10 from the storage main body 1 to the required length, an appropriate engagement means 1 is attached to the side plate 11 of the printer casing 10.
The bottom plate 13, which is engaged and supported in a relative relationship by the bottom plate 7, gradually loses its support relationship with the support rollers 4 of the storage main body 1, which functioned to be pushed up when it was stored, and eventually As a result of the support relationship by the roller 4 being completely released, the engaging means 1
7 as a fulcrum and the lid opens automatically. Therefore, the starting end of the roll paper R supported by the support rod 15 is picked out, and the front panel 12
The printing paper 1 is guided to the printing head section 16 of
8, one can also insert one's fingers from the bottom of the printer housing 10, thereby improving the workability. In addition, the exposed surface of the bottom plate 13 when the lid is open can be used as a surface for pasting stickers, etc. with appropriate explanations such as instructions for handling the printer, thereby improving its operability. can.

On the other hand, after the roll paper R has been set in this manner, the work can be completed by pushing the printer housing 10 into the storage main body section 1. In this case, as the printer housing 10 is pushed into the storage main body 1, the bottom plate 13
The bottom plate 13 is placed on and supported by the support rollers 4 of the storage main body 1, and the support rollers 4 push the bottom plate 13 up in the direction of closing the lid, and eventually the lid is completely closed. Therefore, even if the portion of the printing paper 18 that has been pulled out hangs downward when the roll paper R is set in the printer casing 10 so as to be able to print, this hanging portion is automatically removed along with the bottom plate 13. Since it can be pushed up, it is possible to effectively prevent the hanging portion of the printing paper 18 from being caught in the storage main body section 1 when the printer housing 10 is stored.

[Effects of the invention] As described above, according to this invention, the printer casing is provided with a bottom plate that can be automatically opened and closed in response to entry and exit from the storage main body. Not only can the paper setting process be simplified, but when the printer housing is stored in the storage main unit, the part of the printing paper that has been pulled out of the roll paper and is hanging down can also be pushed up together with the bottom plate. This can reliably prevent the printer from being caught in the storage main body, and can help the printer operate smoothly. Furthermore, since the structure itself is simple, a robust and inexpensive product can be provided.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of an embodiment of this invention, showing how the print case enters and exits the storage main body, and FIG. 2 shows how the print case enters and exits the storage main body in a conventional example. It shows the condition. DESCRIPTION OF SYMBOLS 1... Storage main body part, 2... Side plate, 3... Guide roller, 4... Support roller, 10... Printer housing, 11... Side plate, 12... Front panel, 13...
... Bottom plate, 14 ... Guide rail, 15 ... Support rod,
16...print head section, 17...engaging means, 18
...Print paper, R...Roll paper.

Claims (1)

[Scope of utility model registration request] The printer housing, which is arranged to be removable in and out of the storage main body, has a support rod that rotatably supports the roll paper, and has left and right side plates and a cover between the front end surfaces of these side plates. , and is composed of a front panel having a printing head portion and a bottom plate, and this bottom plate can be opened and closed by having only its rear end swingably engaged and supported by the side plate. Features a paper jam prevention mechanism in printers.