JPH0429868A - Printer - Google Patents

Abstract

PURPOSE:To adapt a printer to at least two types of roll paper of different widths by a method wherein a position for securely mounting a supply side frame on a supply frame can be changed in accordance with the width of the roll paper, and an auxiliary take-up shaft is detachably mounted on a main take-up shaft. CONSTITUTION:When a paper width is large, positioning holes 1a, 1b, 1c of a supply side frame 5 are used. When a paper width is small, positioning holds 1d, 1e, 1f are used. By fixing the supply side frame 5 on a supply frame 1 with a fixing screw 4, one side face of roll paper is regulated. The other side face of theroll paper 6 is regulated by a partition board 9 fixed on the supply frame 1. When the paper width of the roll paper in use is small, only a main take-up shaft 7 having a shaft length corresponding to the paper width is used as a take-up shaft for winding the roll paper 6 when the paper width of the roll paper in use is large, the main take-up shaft 7 can be used as a large-length take-up shaft by fitting an auxiliary take-up shaft 8 having an elastically deformable top end part 8a into a hole 7dn of a shaft center part of the main take-up shaft 7.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a printer that prints on roll paper of at least two different paper widths.

(Prior art) Conventionally, a printer used for ECR, etc., which prints on roll paper, has a supply device that holds the roll paper, a paper feeding means, a printing means, a paper guide section that guides the roll paper to a printing section, and a printer that prints on roll paper. It has a winding mechanism that winds up the roll paper, but in the feeding device, the left and right supply side frames that regulate the left and right side positions of the roll paper are caulked and fixed to the supply frame that takes the weight of the roll paper. Or, the side position is regulated by bending from the bottom of the supply frame, or the entire device is integrally molded, and the paper width of the roll paper that can be used is limited to one type. There is. Furthermore, the width of the paper path in the paper guide section that guides the roll paper from the supply device to the printing section is fixed, and roll thinning of a predetermined paper width cannot be used.

Furthermore, in the winding mechanism for winding up the printed roll paper, the axial length of the winding shaft is fixed, and the amount of roll paper that can be wound is limited.

(Problem to be solved by the invention 1) However, in such printers, only one type of roll paper with a predetermined width can be used, and when using a roll paper with a different paper width, ,
A separate printer with a feeding device, paper guide and take-up shaft adapted to the paper width was required.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a printer that can supply, print, and wind up roll paper of at least two different paper widths with a single printer through simple operations.

(Means for Solving the Problems) In the printer of the present invention, a partition plate for guiding one side of the roll paper is fixed or integrally formed on the supply frame that receives the weight of the roll paper, and guide and regulate the width direction position. The supply side frame can be selectively fixed at a position suitable for at least two paper widths of the supply frame.

In addition, a paper guide section that guides the fed roll paper to the printing section, a fixed paper guide section that guides the top, bottom, left, and right sides of the maximum width roll paper to be used, and a fixed paper guide section that guides the four sides of the roll paper of the maximum width to be used, and a paper guide section that guides the fed roll paper to the printing section. It consists of an auxiliary paper guide that guides one side of the narrow roll paper, and the auxiliary paper guide is detachable from the fixed paper guide.

In addition, an auxiliary winding shaft can be attached to and detached from the main winding shaft that winds the printed roll paper.

(Example) Embodiments of the present invention will be described based on the drawings.

FIG. 1 is a cross-sectional view of a paper feeding section, a winding section, and a paper guiding section of a roll paper.

The roll paper supply device includes a roll paper receiver 2 formed by bending from the bottom of the supply frame 1, a roll paper receiver disposed in a part of the roll paper receiver 2 and in contact with the roll paper, a roller 3, and the roll paper receiver 2. A partition plate 9 is secured to the partition plate 9 to regulate one side of the roll paper, and a screw 4 is attached to the supply frame l.
It consists of a supply side frame 5 fixed by.

As shown in FIGS. 2 and 3, the supply frame 1 has positioning holes 1a+ for attaching the supply side frame 5.
lb, lc, ld.

The supply side frame 5 is positioned using these positioning holes and fixed to the supply frame 1 with mounting screws 4.

The roll paper 6 placed in the supply device is guided by an upper paper guide 10 and a lower paper guide 11, and is led to a paper feed roller 13 and a paper press roller 14.

The roll paper 6 is fed to a printing section l\ (not shown) by a paper feed roller 13 pressed by a paper presser roller 14. The roll paper 6 that has been previously wound around the main winding shaft 7 after passing through the printing section is rotated in the paper feeding direction by rotating the gear section 7b of the main winding shaft 7 using power from a drive source (not shown). The paper is wound up on the paper winding portion 7c of the winding shaft 7.

2 and 4 are cross-sectional views of the supply and winding device sections.

FIG. 2 is a sectional view of the supplying and winding device section corresponding to the case where the paper width of the roll paper used is wide, and FIG. 4 is a sectional view of the supplying and winding device section corresponding to the case where the paper width is narrow.

The supply side frame 5 is fixed to the supply frame 1 with fixing screws 4 using positioning holes 1a, 1b, and 1c when the paper width is wide, and using positioning holes 1d, 1e, and 1f when the paper width is narrow. Regulating one aspect of paper. The other side of the roll paper 6 is regulated by a partition plate 9 fixed to the supply frame 1.

As the winding shaft for winding up the roll paper 6, when the paper width of the roll paper to be used is narrow, only the main winding shaft 7 having a shaft length corresponding to the paper width is used. Both ends of the main winding shaft 7 are supported by U-shaped grooves provided in each of the partition plate 9 and the supply side frame 5, and the teeth and military portions 7b of the main winding shaft 7 are driven by a drive source (not shown). As a result, the printed roll paper 6 is wound onto the winding section 7c on the main winding shaft 7.

When the width of the roll paper used is wide, by fitting the auxiliary winding shaft 8 having an elastically deformable tip 8a into the hole 7d in the shaft center of the main winding shaft 7, the main winding shaft 7 can be used as a long winding shaft.

Again, when using roll paper with a narrow paper width, by pulling the auxiliary winding shaft 8, the tip portion 8a is elastically deformed and can be disengaged from the main winding shaft 7.

3 and 5 are cross-sectional views of the paper guide section.

FIG. 3 is a cross-sectional view of the paper guide section corresponding to the case where the paper width of the roll paper used is wide, and FIG. 5 is a sectional view of the paper guide section corresponding to the case where the paper width is narrow.

The paper guide section includes an upper paper guide 10, a lower paper guide 11, and a mounting frame 12, and guides the roll paper 6 to a paper feed roller 13 and a paper presser roller 14. The upper paper guide 10 and the lower paper guide 11 are fixed to the mounting frame 12, and when the width of the roll paper used is wide, the width direction of the roll paper 6 is fixed to the mounting frame 12 and the upper paper as shown in FIG. It is regulated by a part of the guide 10. Further, as shown in FIGS. 1 and 5, the lower paper guide 11 is formed with a groove-shaped guide portion 11a and a locking portion 11b. The auxiliary paper guide 15 has an engaging part 15a that is elastically deformed.The auxiliary paper guide 15 is inserted along the guide part 11a, and the retaining part 15 is inserted into the locking part 11b.
By engaging and mounting a, when the paper width of the roll paper to be used is narrow, the width direction of the roll paper 6 is regulated by a part of the auxiliary paper guide 15 and the upper paper guide 10 as shown in FIG. be done.

Since the locking portion 15a of the paper guide spacer 15 is elastically deformable, when using a wide roll paper, it can be easily disengaged from the locking portion 11b and detached from the lower paper guide 11. I can do it.

(Effects of the Invention) As explained above, the present invention provides the supply side frame 5 to the supply frame 1 according to the paper width of the roll paper to be used.
By making it possible to change the mounting and fixing position of the paper guide, making it possible to attach and detach the auxiliary paper guide 15 to the fixed paper guide section, and making it possible to attach and detach the auxiliary winding shaft 8 to the main winding shaft 7, at least two It is possible to provide a printer that can supply, guide, and wind up roll paper in accordance with roll paper of different paper widths.

[Brief explanation of the drawing]

FIG. 1 is a side cross-sectional view of one embodiment of the present invention. FIG. 2 is a cross-sectional view of a winding section corresponding to a wide roll paper according to one embodiment of the present invention. For example, FIG. 4 is a sectional view of a paper guiding portion corresponding to a wide roll paper, and FIG. 5 is a sectional view of a winding portion corresponding to a narrow width roll paper. A cross-sectional view of a paper guide section corresponding to narrow roll paper in one embodiment. Roll holder 7 - Main winding shaft 8 - One auxiliary winding shaft 9 - One partition plate 10 - Upper paper guide 11 - Lower paper guide 2 - Mounting frame 3 - Paper feed roller 4 - Paper presser roller 5 - Auxiliary Paper guide or above Applicant: Seiko Epson Corporation

Claims (3)

[Claims] (1) In a printer used for ECR or the like, a supply mechanism that holds a roll paper, a paper feeding means that feeds the roll paper, a printing means that prints on the roll paper, and a supply mechanism that holds the roll paper. a paper guide mechanism that guides the paper from the paper to the position of the printing means, and a winding mechanism that winds up the printed roll paper, and a supply side member that regulates the widthwise position of the roll paper in the supply mechanism section; A printer that can be selectively fixed to one of at least two mounting positions provided on a supply mechanism. (2) The paper guide mechanism that guides the roll paper to the position of the printing means includes a fixed paper guide section consisting of at least one part that guides the four sides of the roll paper (top, bottom, left and right), and a fixed paper guide part that guides one side of the roll paper with a narrow paper width. 2. The printer according to claim 1, further comprising an auxiliary paper guide for controlling the fixed paper guide, the auxiliary paper guide being removable from the fixed paper guide. (3) The printer according to claim 1, wherein the auxiliary winding shaft is detachably attached to the main winding shaft that is rotatably driven and winds the roll paper.