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Image forming apparatus

一种图像、图像承载的技术，应用在应用电荷图形的电记录工艺、应用电荷图形的电记录工艺的设备、仪器等方向，能够解决可用性降低、清洁刮刀影响、长停机时间等问题

Inactive Publication Date: 2018-09-07
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the case where the amount of toner in the image forming unit is lower than the amount that can form a toner band, the cleaning blade is liable to be adversely affected when monochromatic images are continuously formed
In order to avoid this problem, when image formation is stopped before toner is supplied, a long downtime is generated so that it results in reduced usability for users who need output

Method used

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  • Image forming apparatus
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] 2. Control mode

[0052] image 3 It is a block diagram showing the control mode of the main part of the image forming apparatus 10 in this embodiment.

[0053] The image forming apparatus 10 includes a CPU circuit section 305 for implementing integrated control of the operation of each part of the image forming apparatus 10. The CPU circuit section 305 includes a CPU 306 as a control part (execution section), and the CPU 306 is used to execute a control process of the image forming apparatus 10. The CPU circuit section 305 further includes a ROM 307 that stores a program for causing the CPU 306 to operate. The CPU 306 implements integrated control of the controllers 302, 303, and 304 based on a program stored in the ROM 307. The CPU circuit part 305 includes a RAM 308, which is a storage part used by the CPU 306 to temporarily store data therein. Therefore, the CPU circuit section 305 includes a CPU 306, a ROM 307, and a RAM 308.

[0054] The external I / F 301 sends the im...

Embodiment 2

[0067] Another embodiment of the present invention will be described. Elements having substantially the same or corresponding functions and constitutions as those in Embodiment 1 are denoted by the same numbers or symbols, and will be omitted from the detailed description, and only the components specific to this embodiment will be described in detail. In Embodiment 1, in the case where the color toner cartridge is used up, even in the case of the type of paper that needs to be printed in the operation in the monochrome mode with the color drum installed, it is adjusted according to the adjustment in the color developing device. The detection value of the toner content is printed in the operation in the monochrome mode with the color drum removed. In this embodiment, even during the operation in the monochrome mode with the color drum installed, in the case where the color toner cartridge is used up, only the detection value of the toner content in the color developing device i...

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PUM

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Abstract

The disclosure relates to an image forming apparatus which includes an intermediary transfer member; a first image forming portion including a first developing device and a detecting portion; a secondimage forming portion including a second developing device; a contact-and-separation mechanism capable of setting a first state and a second state; and an executing portion capable of executing an operation in a first monochromatic mode in the first state and capable of executing an operation in a second monochromatic mode in the second state. When a toner amount in the first developing device isbelow a predetermined amount on the basis of the detecting portion during an image forming operation for continuously forming the black image in the operation in the first monochromatic mode, the executing portion continuously executes the image forming operation in the second state.

Description

Technical field [0001] The present invention relates to an image forming apparatus including a developing device, such as a copier, a printer, a recorded image display device, or a facsimile machine, which is used to form an image on an image bearing member through an electrophotographic process, an electrophotographic recording process, etc. The electrostatic latent image is developed. Background technique [0002] There is a tandem image forming apparatus in which image forming units for forming yellow, magenta, cyan, and black toner images are provided opposite to an intermediate transfer belt, and colors are formed in contact with the intermediate transfer belt image. In such an image forming apparatus, there is a configuration in which when a monochrome (white-black) image is output using black toner, the unused yellow, magenta, and cyan image forming units are separated from the intermediate transfer belt ( Separated). In this configuration, in the case where an image is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/08G03G15/01G03G21/00
CPCG03G15/0178G03G15/0801G03G21/0011G03G15/0189G03G15/0136G03G15/161G03G15/5016G03G15/0851G03G15/0173G03G15/0194G03G15/5041
Inventor 松本淳志水主村清治牧野匡博
Owner CANON KK