JPH0452464B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Technical Field of the Invention The present invention relates to a non-impact printing device such as an electrophotographic recording device, and more specifically relates to a method for ejecting paper after printing from the printing device is completed. .

(B) Background of the Technology In recent years, non-print printing devices have been frequently used in various fields because they are capable of high-speed printing and are noiseless.

(C) Prior Art and Problems First, the general structure of an electrophotographic apparatus and its printing operation will be explained using FIG.

In the figure, the photosensitive drum 1 is uniformly charged by the charger 2, and then the surface potential of the photosensitive drum 1 is lowered in the area where the image information is exposed by the optical system 3, so that the image information due to light is not electrostatically charged. converted into a pattern.

This electrostatic pattern is developed into a visible image by supplying developer powder by the developing means 4.

On the other hand, the paper 5 is controlled to the same speed as the surface speed of the photosensitive drum 1, and is transported to the transfer means 6 by the paper transport roller 9.

Next, the visible image on the photosensitive drum 1 is transferred onto the paper 5 by the transfer means 6. Thereafter, the visible image transferred to the paper 5 is heat-fixed by a heat-fixing device 7.

Further, the developer powder remaining on the photosensitive drum 1 after the transfer is completely removed by the cleaning brush 8.

Printing by an electrophotographic device is performed by sequentially repeating the steps described above.

However, the printing process of the above-mentioned electrophotographic apparatus does not stop midway, and all the latent images formed on the photosensitive drum 1 are transferred to the paper 5, but there is no information about the next page. In this case, the trailing edge position of the last page stops immediately after passing through the transfer means 6. That is, the transfer surface of the paper 5 from the transfer means 6 to the heat fixing device 7 is in an unfixed state.

Therefore, the operator cannot take out the unfixed paper 5. For this reason, conventionally, the operator specifies the ejecting operation of the unfixed paper 5 from the transfer means 6 to the heat fixing device 7 using a host device.

This ejecting operation uses a normal printing process, and all the data at this time is all space, and the paper is ejected. For this purpose, the photosensitive drum 1
The startup time of the recording process is required.

Further, it has the disadvantage of causing fatigue to the photosensitive drum 1, the developer, and the like.

(D) Object of the Invention In view of the above-mentioned drawbacks, an object of the present invention is to realize a printing device that can take out printed matter immediately after the printing operation is completed without requiring waiting time.

(E) Structure of the Invention The object of the present invention is to provide a toner image bearing member, a latent image forming portion for forming a latent image on the toner image bearing member, and a system for forming a latent image on the toner image bearing member into a toner image. a toner image forming means having a developing section for transferring the toner image to a long recording medium, and a transfer section for transferring the toner image to a long recording medium;
a fixing unit that fixes the toner image transferred onto the recording medium, a recording medium supply section that supplies the long recording medium, and a recording medium storage section that accumulates the long recording medium. and a conveying means for conveying the recording medium from the recording medium supply section to the recording medium storage section via the transfer section of the toner image forming means and the fixing means,
A printing device that finishes a printing operation in a state where the recording medium holding an unfixed toner image between the transfer section and the fixing means is stopped, wherein an unfixed toner image is held between the transfer section and the fixing means. When an instruction to eject the recording medium is received while the recording medium holding a toner image is stopped, the unfixed toner image is fixed and conveyed to the medium storage section. This is achieved by a printing apparatus characterized in that it includes a control means for driving and controlling the fixing means and the conveyance means while the operation of the toner image forming means is stopped.

(F) Examples of the invention Next, the present invention will be explained in detail using the drawings.

FIG. 2 is an explanatory diagram of an embodiment of the printing apparatus according to the present invention.

10 is a control signal C from the operator or higher-level device.
This is a drive control unit that outputs drive signals A and B for controlling the heating and fixing device 7 and the paper conveyance roller 9 in response to the drive signal. The same parts as in Figure 1 are given the same numbers.

FIG. 3 is a diagram showing details of the drive control section in FIG. 2. In the figure, reference numeral 11 denotes a heating fuser drive circuit which outputs a drive control signal A for driving the heating fuser 7 in response to an operator's operation or a switching signal C between printing and ejection operation outputted by a host device; , a drive control signal B applied to a motor (not shown) that drives the paper conveyance roller 9 in response to an operation by the operator or a switching signal C between printing and ejection operation outputted by a host device.
This is a paper conveyance roller drive circuit that outputs .

Next, the operation of this embodiment will be explained.

Printing by the electrophotographic printing apparatus is performed by sequentially repeating the steps explained using FIG. Here, in the present invention, after all the latent images formed on the photosensitive drum 1 have been transferred, the image is fixed on the sheet 5 in an unfixed state from the transfer means 6 to the heat fixing device 7.

All the latent images formed on the photosensitive drum 1 have now been transferred to the paper 5, and the paper 5 is not being transported.

Here, the operator or the host device outputs a switching signal C from the printing mode to the discharging mode. The switching signal C is input to the drive control section 10, and then input to the heat fixing device drive circuit 11 and the paper conveyance roller drive circuit 12 in the drive control section 10.

The heat-fixing device drive circuit 11 outputs a drive signal A based on the input switching signal C, and drives the heat-fixing device 7 .

In addition, the paper conveyance roller drive circuit 12 drives a motor to drive the paper conveyance roller 9 to drive the paper 5.
After transporting the paper 5 by a predetermined amount, the paper transport roller 9 is stopped and the paper 5 is transported. At this time, the amount of conveyance of the paper 5 needs to be long enough for at least the trailing edge of the page of the paper 5 located in the transfer means 6 to pass through the heat fixing device 7 at the end of printing.

As explained above, when the printed paper is ejected, by driving only the heat fixing device and the paper transport roller, the latent image forming unit that forms the electrostatic latent image on the photosensitive drum is used to eject the paper. There is no need to create all-space data and no wait time for draining.

Further, if the rotational operation of the photosensitive drum and the operation of the developing device are also stopped, fatigue of the photosensitive drum and developer will not be caused.

(G) Effects of the Invention According to the present invention, only the heat fixing device and the paper transport roller are operated during the ejection operation of the printed paper, so that the printing process can be performed immediately without the need for waiting time for driving the recording process of the printing device. Printed paper can be taken out. Further, according to the present invention, since processes such as a photosensitive drum and a developing means are not used, a great effect can be obtained in that the photosensitive drum 1 and the developer are not fatigued.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a schematic configuration of an electrophotographic device, FIG. 2 is a diagram for explaining an embodiment of a printing device according to the present invention, and FIG. 3 is a diagram showing details of a drive control section in FIG. 2. It is a diagram. In the figure, 1 is a photosensitive drum, 2 is a charger, and 3 is a photosensitive drum.
is an optical system, 4 is a developing means, 5 is paper, 6 is a transfer means, 7 is a heat fixing device, 8 is a cleaning brush,
9 is a paper conveyance roller, 10 is a drive control unit, 11
12 is a heating fuser drive circuit, 12 is a paper transport roller drive circuit, A and B are drive signals, and C is a switching signal.

Claims (1)

[Scope of Claims] 1. A toner image carrier, a latent image forming section for forming a latent image on the toner image carrier, and a developing section for converting the latent image on the toner image carrier into a toner image. , a toner image forming means having a transfer section that transfers the toner image onto a long recording medium, a fixing means that fixes the toner image transferred onto the recording medium onto the recording medium, and the long length. a recording medium supply section that supplies the long recording medium; a recording medium storage section that accumulates the long recording medium; and a recording medium storage section that supplies the recording medium from the recording medium supply section to the transfer section of the toner image forming means and the fixing section. a conveyance means for conveying the recording medium to the recording medium storage section via the means, and a printing operation is performed in a state where the recording medium holding an unfixed toner image between the transfer section and the fixing means is stopped. In the printing apparatus, when receiving an instruction to eject the recording medium while the recording medium holding an unfixed toner image from the transfer section to the fixing means is stopped, the unfixed toner image is a control means for driving and controlling the fixing means and the conveyance means with the operation of the toner image forming means stopped until the toner image is fixed and conveyed to the medium storage section; A printing device comprising: .