JPH0264591A - Image forming device - Google Patents

Abstract

PURPOSE:To detect the use quantity of a web from integrated number by an integrating means and to simplify the constitution of the title device without using a special sensor, etc., by moving the we abutting on a body to be cleaned by specified quantity at a time stepwise by a driving means and integrating the driving times of the driving means by the integrating means. CONSTITUTION:When an image forming device is operated with a COPY, a solenoid 1 is turned ON/OFF to the operation. By interlocking with the movement of the solenoid 1, a one-way clutch 2 works in a web driving system. When the solenoid 1 and the clutch 2 work in a direction shown by an arrow (a), a gear 3 interlocking with the clutch 2 receives the effect of driving and moves the web which impregnates offset preventing liquid by a specified quantity so as to be wound to a web take-up part. When the solenoid 1, etc., works in a direction shown by an arrow (b), the gear 3 connecting to the clutch 2 does not work with the effect of the clutch 2 and a series of actions are integrated stepwise in a web driving times integrating means and the use quantity of the web can be detected based on the integrated result.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image forming apparatus that includes a web that comes into contact with an object to be cleaned for cleaning.

[Prior Art] In image forming apparatuses such as electrophotographic apparatuses, it is possible to use a web for removing residual toner on a photoreceptor, offset toner on a fixing roller, etc., and it has not been used. ing.

An example of cleaning using this web is shown in FIG.

9 is a fixing roller, 5 is a web supply shaft, and 6 is a web winding shaft, and this winding tiIb6 is driven by a driving means.

The web 8 is moved from the supply section 5 to the winding section 6 by being driven by a drive means in accordance with the operation of the image forming apparatus.

During this movement, the web 8 is pressed by the web pressing roller 7 and comes into contact with the fixing roller 9 .

Conventionally, in order to replace this web, a notch was provided in the web, and the end of the web was detected using an optical sensor or a mechanical mechanism.

[Problems to be Solved by the Invention] As described above, in the past, a special sensor or the like was required to detect the remaining amount of web.

Additionally, it was only possible to detect specific locations such as cutouts.

[Means for Solving the Problems] The present invention, which solves the above-mentioned problems, includes a web that comes into contact with an object to be cleaned, a driving means for moving the web in stages by a predetermined amount, and an accumulation of the number of times the driving means is driven. The present invention is characterized in that the amount of web usage is detected based on the integrated number by the integrating means.

[Example] Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a diagram that best represents the features of the embodiment of the present invention, and shows a series of sequences during operation of the device. Further, FIG. 2 is a perspective view of an embodiment of the present invention. When the device operates as shown by "C0PY" in Figure 1, the solenoid (1 in Figure 2) goes to 0.
N10FF is applied. In the web drive system shown in FIG. 2, one-way clutch 2 is connected to the movement of solenoid 1.
works. At this time, the gear 3 connected to the clutch is connected to the solenoid and one-wafer in the direction of the arrow shown by a in the figure.
Only when the y-clutch operates, the web impregnated with a predetermined amount of anti-offset liquid is driven eight times and wound onto the web winding section. When a solenoid or the like operates in the direction of the arrow already shown in the figure, the gear 3 connected thereto slips due to the effect of the one-way clutch 2 and does not operate.

Simultaneously with the above-mentioned series of drive system operations, means for accumulating the number of web drives (hereinafter referred to as a web counter) within the image forming apparatus.
0N of the solenoid to move the web step by step 8 times.
The number of times of 10FF is accumulated. The web counter can be displayed by special instructions or operations such as service mode, and can be displayed at any time, and the total amount of web,
Since an arbitrary position of the web can be determined by comparing it with an arbitrary limit number calculated from the web winding amount per solenoid 0N10FF, the usage amount and remaining amount of the web can be managed without providing any special means.

The display in this service mode or the like may be a count number or data corresponding to the count number.

Furthermore, if the web counter is configured to display this when the numerical value reaches a calculated arbitrary limit number, it is possible to detect the web usage limit without providing a special sensor. At this time, if the image forming apparatus main body is configured to temporarily stop its operation, failures can be prevented.

Further, when restoring the accumulated count by, for example, web exchange, it may be configured such that the count can be cleared only by a special instruction such as a service mode.

[Effects of the Invention] According to the present invention, without providing a special sensor or the like,
You can detect the amount of web usage or remaining amount.

Furthermore, any point on the web in use can be detected.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the operating sequence of an image forming apparatus embodying the present invention. FIG. 2 is a perspective view of an embodiment of the present invention. FIG. 3 is a cross-sectional view when a web is used to clean the fixing device. It is a diagram. 1-m-Solenoid 2--One-way clutch 3-m-Drive gear 4-M-Drive gear 5-M-Web supply section 6--Web winding section 7--Web pressing roller 8-m - Web 9 - Fixed roller number 20

Claims (3)

[Claims] (1) It has a web that comes into contact with the object to be cleaned, a driving means that moves the web step by step by a predetermined amount, and an integrating means that adds up the number of times the driving means is driven, and the number of times that the integrating means has added up. An image forming apparatus characterized by detecting the amount of web used. (2) The image forming apparatus according to claim 1, wherein the image forming apparatus prompts the web to be replaced when the cumulative number by the integrating means is reached. (3) The image forming apparatus according to claim 1 or 2, wherein the apparatus further has a mode for displaying a cumulative number by the integrating means or data corresponding to the cumulative number. .