JPS58120267A - Copying device - Google Patents

Abstract

PURPOSE:To restrict the power consumption of an internal battery to a required minimum to extend the life of the internal battery, by providing a switching means in a picture formation process unit which can be attached to and detached from a copying device body. CONSTITUTION:The picture formation process unit consists of an incorporated battery 1, a switch 2, a memory part 3, a controlling part 4, and a signal transmitting part 5. When this process unit is mounted on the copying device body, the power source voltage from the incorporated battery 1 is supplied to electric circuits except the memory part 3 which require always the supply of the power source voltage, namely, the controlling part 4 and the signal transmitting part 5, through the switch 2, which is switched synchronously with the copy operation, only when these parts 4 and 5 are operated. Thus, the power consumption of the battery 1 is restricted to extend the life of the battery 1.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention is designed to automatically control the power supply connection of the electric circuit built into the image forming process unit.

The removable image forming process unit in conventional copying machines includes: in general. It is equipped with a storage means that stores process conditions unique to each process unit. As for the memory means. To retain memory contents. The battery built into the process unit makes it independent of attaching and detaching the process unit. It constantly supplies power supply voltage. however.

In addition to such storage means, the process unit includes:

It is related to the means of memory. For example, other electrical circuits such as for writing and reading are also provided, and these other electrical circuits are also provided. As with the storage method mentioned above, the built-in battery is always connected (
This has the disadvantage that the power consumption of the built-in battery is significantly increased unnecessarily.

The object of the present invention is to eliminate the above-mentioned drawbacks of the prior art.

To provide a copying apparatus in which the power consumption of a battery built in a detachable image forming process unit is suppressed to the necessary minimum, thereby extending the life of the built-in battery.

In other words, the copying apparatus of the present invention is a removable image forming unit, and the electrical circuits other than the storage means built into the unit include:
Inner H only when attached to the copying machine main body during copying operation.
The power supply voltage can be supplied from a battery.

The present invention will be described below with reference to FIG. 1T11.

FIG. 1 shows an example of a circuit configuration of a removable image forming process unit in a copying apparatus of the present invention.

In the illustrated configuration, l is a built-in battery, g is a switch that controls the supply of power supply voltage from battery l to the load circuit, 3 is a part of memory that stores process conditions and process history 111pk, and q is a drum for copying. A control section 3 includes a detection section that detects the rotational speed of the machine, and 3 is a signal transmission section that reads process conditions from the memory section 3 and transmits them to the main body of the copying machine, as well as writes process history information into the memory section 3. . Is the image forming process unit with such a configuration based on process conditions specific to each manufacturing W#? Each memory part 3 is written and memorized before being shipped, and the memory part 3 is always supplied with power supply voltage by a built-in battery to preserve the stored contents. Such image forming process conditions t) f When installed in the main body of the copying apparatus. The power supply voltage from the built-in battery l is supplied to the control unit q via a switch that opens and closes in synchronization with the copying operation.
and signal transmission sS. Preferably, the switch 2 includes a reed switch, and the reed switch controls the closing operation of the reed switch 1 in synchronization with a 111c magnet disposed opposite to another reed switch attached to the main body of the copying apparatus. Information such as the power supply voltage supply status, process conditions, etc. stored in the memory part 3 is controlled 114! Under the control of [@transmission department! The information is transmitted to the main body of the copying machine via. Further, in the control section, each time the image forming process unit is used, the usage history can be stored in the memory part 3 and further transmitted to the main body of the copying apparatus via the signal transmission hs.

Note that the switch can be configured with a combination of an optical sensor and a light emitting source, a reed switch and a magnet, a microswitch and a mechanical member disposed in the process unit and the copying machine body, respectively. .

Further, according to one aspect of the present invention, as shown in FIG.

By using a non-volatile 8mm MJ' instead of the memory part 30, all electric circuits J', 4 (
It is also possible to configure the system so that the signals and S are blocked.

According to the present invention, the above w5 can be clearly changed to 5,
By providing a removable opening/closing means in the image forming process unit in the main body of the copying machine, electrical circuits other than the memory means that require voltage supply are closed only when the unit is in operation. Since the power supply voltage is supplied from the pond, it is possible to suppress wasted battery power and extend the life of the built-in battery.

%, if non-use continues for a long period of time, the effect becomes significant.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an example of the configuration of the iii* formation process unit in the copying apparatus of the present invention, and FIG. 2 is a front diagram showing another embodiment of the present invention. C... Battery, C... Switch. 3...part of memory, da...control section. S...Signal transmission section. Patent applicant Canon Co., Ltd.

Claims (1)

[Scope of Claims] l) A removable image forming process unit is provided, and by mounting the image forming process unit, the electric circuit is connected to the power supply means built in each of the image forming process units during a copying operation. A copying apparatus characterized in that a contact of a switch mechanism can be closed. 2) The power supply means t is provided in the image forming process unit.
A copying apparatus according to claim 1] JI, characterized in that the copying apparatus further comprises another electric circuit connected to the LCT1 connection. 3) The copying apparatus according to claim 1 or WA2, characterized in that the switch mechanism can be opened and closed in synchronization with a drive signal supplied from the copying apparatus main body, which is a contact point of the switch mechanism.