JPS6126055Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a paper feeding mechanism for a printer.

The purpose of the present invention is to prevent troubles related to paper jams occurring within a printer.

Another object of the present invention is to protect the recording paper after printing from damage caused by paper jams.

Printers, especially calculators, cash registers, terminal devices, etc. equipped with serial printers, often experience problems due to paper jams occurring inside the printer. Among these, cash registers are frequently used and operated by unspecified people, so troubles are particularly likely to occur. However, once a problem occurs due to paper jams, it is inevitable that stores with a large number of customers, such as supermarkets and department stores, will be crowded. Serial printers print receipts and journals using one head. The journal is constantly wound up by a take-up device and under tension so it does not sag. However, in the case of receipts, the leading edge of the paper comes out of the cash register case in a free state, so the head comes off from above the receipt and falls onto the journal. When the receipt is moved to, the receipt is fed, and is then sent out of some load 10 at the receipt outlet so that it can be received by an operator. At this time, when an external force such as an operator strongly grasping the receipt 1 acts against the direction in which the receipt 1 is being fed while the receipt 1 is being fed, the receipt paper 1 is deformed and the paper guide opening 8 It will be discharged outside.
Note that even if the above-mentioned external force is applied to the receipt 1 when the printing head 4 is on the journal paper, the paper guide opening 8 is larger than the opening in the printing section to facilitate ejection, so that the receipt 1 can be easily ejected in the printing section. is not deformed. However, if the opening 8 is made too large, even a slight load that does not cause a paper jam will cause the opening 8 to become too large.
Therefore, by adding a movable opening cover 11 to the opening 8 as shown in FIG. 2, an appropriate load can be applied to the opening 8 to remove the receipt 1.
It is also possible to allow the gas to be discharged from the opening 8 by pushing open the opening cover only when necessary (when a load sufficient to cause a jam is applied to the outlet).
As described above, the present invention deals with paper jams in printers in equipment such as cash registers. If the head is damaged or damaged, the paper jam will sag, and the head will come back and catch it, causing the receipt being issued to become stuck. Torn or
There was a risk of serious problems such as the head being damaged or the ink ribbon coming off. The present invention aims to eliminate such drawbacks, and one embodiment will be described with reference to the drawings. FIG. 1 is a side view of a paper feeding mechanism, a printing section, and a part of a cash register case, and FIG. 2 is a side view of another embodiment. To explain according to the diagram, 1 is a receipt, 2 is a paper feed roller, 3 is a paper press roller, 4 is a print head, 5 is a head guide shaft, 6 is a platen, 7 is a paper guide, 8 is a receipt on the paper guide 7 Reference numeral 1 denotes a paper guide opening which becomes a relief part that curves when an external load is applied to the issuing part, and is provided perpendicularly to the feeding direction of the receipt 1 and wide. 9 is an ink ribbon, 10 is a cash register case, and 11 is a movable opening cover. Under normal conditions, the receipt 1 is fed along the paper guide 7 by the paper feed roller 2 and the paper presser roller 3 to the print head 4 and the printing portion of the platen 6. The print head 4 selectively prints characters, symbols, etc. on the receipt via the ink ribbon 9 while moving left and right on the head guide shaft 5.

Receipt 1 has the advantage of not only preventing mechanical troubles such as the cash register case bong coming off, but also protecting the receipt being issued.

[Brief explanation of the drawing]

Both FIGS. 1 and 2 are side views of the present invention. 1
4 is a print head, 7 is a paper guide, 8 is a paper guide opening, and 11 is an opening cover.

Claims (1)

[Claims for Utility Model Registration] In a printer in which a recording paper is inserted between a print head and a platen, and the print head prints on the recording paper via an ink ribbon, the recording paper is sent to a recording paper issuing unit side. a paper feeding member; a paper guide member that guides the recording paper toward a recording paper insertion section, a printing position, and the recording paper issuing section; a print head that prints data on the recording paper;
The paper guide member, which is located closer to the recording paper issuing unit than the printing position, is provided with an opening that becomes a relief part that curves when the recording paper receives an external load in the issuing unit, in the feeding direction of the recording paper. A paper feed mechanism for a printer characterized by being wide and perpendicular to the paper feed mechanism.