JPH0327964A - Paper feed mechanism of printer - Google Patents

Abstract

PURPOSE:To make manual operation unnecessary by discharging unused printing paper automatically to an area outside a printer by a paper feed command signal after detection of 'no paper present'. CONSTITUTION:Paper 2 is set at a tractor wheel 1. After the setting, the paper 2 is a sent by a transmission mechanical section 3. If 'no paper 2 present' is detected by a paper detection section 4, printing is allowed within a range where it is possible, and then a drive signal is connected to a paper feed drive section 6 from a control section 5. After this, the transmission mechanical section 3 drives the tractor wheel 1 to automatically discharge unused printing paper 2 remaining in a printer to an area outside the printer passing through an area between a platen 7 and a printing mechanical section 8. Thus manual operation is made unnecessary.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a paper feeding mechanism for a printer, and particularly to paper feeding after printing.

[Conventional technology]

Conventionally, the paper feeding mechanism of this type of printer is composed of a transmission mechanism using a motor, a belt, and gears. The paper set on the tractor is sent to the rear of the platen by a transmission mechanism. Detection of "absence" of paper is performed using a sensor, and after detection, printing is performed within the printable range, paper feeding is stopped, and the printer is stopped.

[Problem to be solved by the invention]

In paper running in the above-described conventional printer, after detecting paper "-no", printing is performed in the printable range, paper feeding is stopped, and the printer is stopped, so unprinted paper remains in the printer. Therefore, when newly setting paper, there is a drawback that unprinted paper remaining in the printer must be manually removed.

[Means to solve the problem]

The paper transport mechanism of the printer of the present invention has means for terminating printing in a printable range and generating a paper transport command signal when detecting a paper "absence".

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram of an elliptical section of a paper feeding machine according to an embodiment of the present invention, and FIG. 2 is a block diagram of its control circuit.

Referring to FIGS. 1 and 2, in the paper feeding mechanism of the printer of the present invention, paper 2 is first set on a tractor 1. As shown in FIG. The paper 2 after being set is fed by the transmission mechanism section 3. When the paper detection unit 4 detects that the paper 2 is “absent”, the control unit 5 prints within the printable range.
sends a drive signal to the paper feed drive section 6, and the transmission mechanism section 3 drives the tractor 1, whereby the unprinted paper 2 remaining in the printer is automatically ejected from the printer through between the platen 7 and the printing mechanism section 8. be done.

〔Effect of the invention〕

As described above, the present invention has the advantage that unprinted paper can be automatically ejected from the printer by a paper feed command signal after detecting "absence" of paper, thereby eliminating the need for manual operations.

The configuration diagram, Figure 2, is a block diagram of its control circuit. ■... Tractor, 2... Paper, 3... Transmission mechanism section, 4... Paper detection section, 5... Control section, 6... Paper feeding drive section, 7... Platen, 8... Printing mechanism section.

Claims (1)

[Claims] means for detecting paper "absence"; means for finishing printing in a printable range and generating a paper feed command signal in response to the detection of paper "absence" by the means; and means for generating a paper feed command signal in response to the signal; 1. A paper feeding mechanism for a printer, comprising means for ejecting paper.