JPS58145977A - Cleaning mechanism - Google Patents

Abstract

PURPOSE:To clean a heat and pressure fixation part effectively by operating the cleaning cloth in said part intermittently. CONSTITUTION:A holding roll 1 for a cleaning cloth is initially held wound with the cleaning cloth on said roll 1. A winding roll 3 for the cleaning cloth is driven by a motor 4. During printing operation, the motor 4 is driven continuously by way of a time control circuit 10 in accordance with he command from a logical part 9 and the cleaning cloth 2 is moved continuously as well. When the printing operation is suspended as in a period B here, the printing paper is stopped; at the same time, a holding roll 7 is pulled downward. On the other hand, a heat pressing roll 5 is kept at a high temp. by an internal heater 6, and in this state, the time control circuit repeats on-off operations of times T1, T2 and drives the motor 4 according to such operations, then the cloth 2 is moved intermittently and the evaporation of the oil impregnated in the cloth 2 by the roll 5 is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides an electrophotographic non-impact printer including:
In particular, the present invention relates to the operation method of the cleaning cloth of the heat-pressure fixing mechanism.

Conventionally, a cleaning cloth impregnated with oil was used to clean the heat-pressure fixing mechanism, and the cleaning cloth was moved during printing operations, and the cleaning cloth was stopped when there was no printing operation and the printer was at rest. . However, in the heat-pressure fixing section, 5, for example, 2
Because the temperature is close to 00℃, if the resting intercostals are long,
If the oil on the cleaning cloth evaporates and the next printing operation begins,
The cleaning function did not work properly, resulting in dirt on the printing paper, resulting in a serious accident at the temple. Furthermore, if the cleaning cloth is moved even when the project is not in progress, there is a drawback that expensive cleaning cloths are wasted.

In order to overcome the above-mentioned disadvantages, the present invention moves the cleaning cloth intermittently even during suspension, prevents the evaporation of impregnated oil, effectively cleans the fixing section, and provides stable cleaning.
This is provided by Machine St.

The present invention is comprised of a heat-pressure fixing mechanism section and a time control circuit for rounding the heat-pressure fixing mechanism section, and is characterized in that the cleaning cloth of the heat-pressure fixing mechanism section is moved intermittently. An embodiment of the present invention will be described with reference to drawings r#.

In Figure 1, the cleaning cloth holding row 21 is in a state in which the cleaning cloth is wrapped around the roller in the first M. The cleaning cloth crawler 3 is driven by a motor 4.

During the printing operation, as shown in Figure 2, the
The motor 4 is continuously driven through the control circuit 10' for one hour according to the command from the cleaning cloth 2.

moving continuously.

Here, when the printing operation is stopped (period B), the printing paper is stopped and at the same time is pulled up to the lower part of the holding roller 74. - The universal pressure roller 5 is kept at a high temperature by an internal heater 6. In this state, time control gllP1
@10 is as shown in Figure 2.

The on/off operation sound is repeated for a time T, ,'l''2, and the motor 4 is driven accordingly.The cleaning cloth 2 is intermittently moved by the motor 4, and the cleaning cloth 2 is Impregnated with oil to prevent it from evaporating.

As described above, the present invention prevents the evaporation of the oil contaminated by the cleaning cloth by intermittently transferring the cleaning cloth of the heat-pressure fixing unit, and prevents the oil from evaporating on the printing paper due to the unwiped roller. It has the effect of preventing dirt and providing good print quality.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 shows a partial diagram of an embodiment of the present invention, and FIGS. 2(a) and 2(b) are time charts of the outputs of the logic section 9 and the time control circuit W&10. It is. 1... Clean agitation cloth holding roller, 2... Cleaning cloth, 3... Cleaning cloth take-up roller, 4...
...Motor, 5...Heat roller% 6...
・Heater, 7...Holding roller, 8...
Printing paper, 9... Logical section, 10... Time control first closing No. 211 Procedural amendment (method) 1. Indication of the case 1988 Patent Application No. 2923
No. 1, No. 2, Name of the invention fIll Finger mechanism 3, Relationship with the amended case Applicant: 5-33-1 Shiba, Minato-ku, Tokyo (423) NEC Corporation Representative: Tadahiro Sekimoto 4, Agent: 108 Shibago, Minato-ku, Tokyo] '1J37 No. 8 Sumitomo Mita Building 5, date of amendment order June 29, 1980 (shipment date) 6. ``Brief explanation of drawings'' of the specification subject to amendment 7, 1! In the 4th line 3rd line of the original contents statement, [M2 figure tal and tbl are”
A certain iU Figure 2 is corrected to ``.

Claims (1)

[Scope of Claims] An electrophotographic non-impact printer having a heat-pressure fixing mechanism, wherein the cleaning J4 mechanism is characterized in that the operation of a cleaning cloth in the heat-pressure fixing section is performed intermittently.