JPH02251472A - Printer - Google Patents

Abstract

PURPOSE:To eliminate a member for pressing a discharge sheet roller to a single slip sheet, and to reduce in size and weight a cut sheet feeder by composing of a roller coupled to be driven to a platen, a member for pressing a continuous slip sheet discharged above the platen after printing, and a member for gathering the sheet discharged from the roller. CONSTITUTION:A perforated continuous slip sheet is fed by a sheet feed tractor 1 in a direction of an arrow 7, guided to a print head 3 by a sheet guide 6, a platen 2, printed, and then discharged in a direction of an arrow 9 without slack of the sheet at the same or more peripheral speed as the platen 2 of a member 5 for pressuring a print sheet discharged above the platen 2 via a roller 4 coupled to be driven by a platen gear. When the sheet is manually fed in a direction of the arrow 7, a sheet feed roller 10 for pressurizing the sheet to the platen 1 generates a sheet feeding force, guided to the head 3, printed, then discharged in the direction of the arrow 9 without slack of the sheet by a member for pressing the roller 4 above the platen 2, and collected in a member 8.

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention relates to a printer that is an information device output device. [Prior Art] A paper feeding tractor is placed in front of a rotary cylindrical platen to feed a continuous slip sheet with holes, and a cut sheet nozzle receives driving power from a platen gear fixed on the same axis as the platen. When attaching the EIG, a roller is positioned above the platen and is drivingly connected to the platen gear so that it rotates at the same or higher circumferential speed than the platen, and a continuous slip with a hole is discharged above the platen after printing. The member that presses the paper had been removed. The prior art will be described below with reference to the drawings. FIG. 3 is a cross-sectional view of elements of a printer according to the prior art. The paper feed tractor 31 is disposed in front of the platen 32. A continuous form with holes (not shown) is fed in the direction of the arrow 37 by the paper feed tractor 31, and then passed through the paper guide 36,
After printing, the roller 34 is guided to the print head 33 by the platen 32 and is positioned above the platen 32 after printing, and is drivingly connected to a platen gear (not shown) fixed to the platen 32 on the same axis. 3
2. Due to the same or higher circumferential speed of the member 35 that presses the printing paper discharged upward, the perforated continuous slip paper was discharged in the direction of the arrow 38 without causing paper slack. FIG. 4 is an elemental sectional view of the prior art printer shown in FIG. 3 with a cut sheet feeder attached thereto. The area above the broken line indicates the cut sheet feeder body, which feeds the cut sheet 45.
A hopper board 43 for setting the paper, a paper feed spring 44 for applying pressure to the paper feed roller 42, and a stacker 48 for placing the cut sheets after printing.
It has a paper ejection roller 41 that ejects the sheet and a member 47 that presses the paper sheet against the paper ejection roller. As can be seen from Figures 3 and 4, in order to install a cut sheet feeder that uses cut sheets from continuous slip paper with holes, the components located above the broken line in Figure 3 must be removed. I was doing the installation.

[Problems to be Solved by the Invention] When attempting to attach a cut sheet feeder that automatically feeds cut sheets to a conventional blinker, it is necessary that the cut sheet feeder uses the same power for feeding sheets as the platen. A roller is drivingly connected to the platen gear so that it rotates at the same or higher circumferential speed than the platen, and a continuous slip with a hole is discharged above the platen after printing on the roller. The members that press the paper are duplicated, and the cut sheet feeder cannot be attached unless removed, which requires complicated operations. In addition, a roller located above the platen that rotates at the same or higher circumferential speed than the platen and a member that presses the perforated continuous slip paper against the roller are a sheet ejecting roller of the cut sheet feeder and a sheet ejecting roller. The paper discharge operation is similar to that of the member that presses the paper, and the elimination of one of them through commonality was essential to promoting lower prices. The present invention solves the above drawbacks and concerns,
The purpose of this is to install a cut sheet feeder in printers where a paper feed tractor is placed before feeding continuous perforated slip paper to a platen of a cylindrical rotating body. The paper ejection roller of the feeder, the roller located above the platen, and the member that presses the perforated continuous slip paper are shared, and the paper ejection roller of the cut sheet feeder and the paper ejection roller are used to apply single slip paper. Eliminate pressing parts. The aim is to significantly reduce the price, size, and weight of cut sheet feeders. [Means for Solving the Problems] A printer according to the present invention includes a paper feed tractor disposed before feeding a perforated continuous slip paper to a rotating cylindrical platen, and a power mechanism for driving the platen and the paper feed tractor. , a roller located above the platen and drivingly connected to the platen; a member that presses the perforated continuous slip paper discharged above the platen after printing against the roller; and a single slip paper discharged from the roller. It is characterized by being comprised of a member that collects. [Embodiment] The present invention will be explained in detail with reference to FIGS. 1 and 2. 0. Paper feed tractor l is placed in front of platen 2. 1. Continuous slip paper with holes, not shown, is moved by paper feed tractor l. The paper is fed in the direction of arrow 7, guided to the print head 3 by the paper guide 6 and platen 2, and after printing by the print head 3, is driven by a platen gear located above the platen 2 and fixed to the platen 2 on the same axis. connected roller 4
Then, due to the peripheral speed of the member 5 that presses the printing paper discharged above the platen 2 after printing against the roller 4 at the same or higher circumferential speed than the platen 2, the perforated slip paper is moved in the direction of the arrow 9 without causing any slack in the paper. is discharged. Furthermore, if the user manually feeds a cut sheet (not shown) from the direction of arrow 7, the paper feed roller l presses the cut sheet against the platen l.
O moves from the position shown by the solid line to the position shown by the dashed-dotted line, generates paper feeding force, is guided to the print head 3, and after printing, the roller 4 located above the platen 2 and the member that presses the roller 4 prevent the paper from sagging. It is discharged in the direction of arrow 9. Since this roller 4 has a circumferential speed equal to or higher than that of the platen 2, it can be used to prevent not only perforated continuous slip paper but also cut paper from sagging, and to eject cut paper. It has the same function as the paper ejection roller of a sheet feeder. Therefore, the member 8 that collects the cut sheets discharged from the roller 4 in the direction of the arrow 9 can serve as the discharge roller of the cut sheet feeder and a stacker. FIG. 2 is an elemental sectional view of a cut sheet feeder attached to the printer of the present invention. A member 8 located above the platen 2 and stacking the cut sheets 2 ejected from a roller 4 driven and connected to a platen gear (not shown) fixed to the platen 2 is used to stock the cut sheets after printing. Since this is possible, the cut sheet feeder inside the broken line has a paper feed roller 20. Paper feed spring 18
The configuration includes only the members related to paper feeding of the hopper board 19, and the paper ejection roller and the member that presses the cut printed paper against the paper ejection roller, which the conventional cut sheet feeder had, are eliminated. By continuously feeding the cut sheets in the direction of arrow 17 from the cut sheet feeder, a series of cut sheet feeder sequences of sheet feeding, printing, sheet ejection, and stocking are established. As you can see from this diagram, platen 2
The roller 4 located above and the member 5 that presses the perforated continuous slip paper against the roller 4 are mounted on a cut sheet feeder, which sometimes does not overlap with the cut sheet feeder, and the drive power of the sheet tweeter according to the present invention is as follows. Platen 2
A gear (not shown) drivingly connected to the roller 4 or a gear (not shown) fixed on the same shaft as the roller 4 located above the platen can be freely obtained. [Effect of the Invention 1] In a printer in which a paper feed tractor is disposed before feeding continuous slip paper with holes to a rotating cylindrical platen, a power mechanism for driving the platen and the paper feed tractor, and a power mechanism for driving the platen and the paper feed tractor, and a roller positioned and drivingly connected to the platen; a member that presses the perforated continuous slip paper discharged above the platen after printing against the roller; and a layer of printing paper located between the platen and the roller. According to the printer, the cut sheet feeder is located above the platen when the cut sheet feeder is installed or removed when using perforated continuous slip paper or cut sheet paper. Complicated operations such as attaching and detaching parts are no longer necessary. In addition, since the paper ejection section of the cut sheet feeder can be shared with the roller located above the blink platen and the member that collects the printed paper, eliminating the paper ejection section of the cut sheet feeder significantly reduces the price and size. ,
It has the excellent feature of being lightweight. Print head roller pressure member Paper guide Printing paper sheet layer member Above Applicant Seiko Epson Co., Ltd. Agent Patent attorney Kizobe Suzuki (1 other person)

[Brief explanation of drawings]

1 and 2 are elemental sectional views of an embodiment according to the present invention,
3 and 4 are sectional views of elements of an embodiment according to the prior art. 1... Paper feed tractor 2... Platen No. 4v4

Claims (1)

[Claims] In a printer in which a paper feed tractor is disposed before feeding continuous slip paper with holes to a rotating cylindrical platen, a power mechanism for driving the platen and the paper feed tractor, and a power mechanism located above the platen and connected to the platen. Consisting of a drive-connected roller, a member that presses the perforated continuous slip paper discharged above the platen after printing against the roller, and a member that stacks the cut paper discharged from the roller. A printer featuring