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Image forming apparatus and toner amount calculation method

A toner and image technology, applied in the field of image forming device and toner quantity calculation, can solve problems such as excessive consumption of toner, and achieve the effect of high calculation processing speed

Active Publication Date: 2021-08-24
KYOCERA DOCUMENT SOLUTIONS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A fringe electric field is generated at the boundary between the dot-existing area and the non-existing dot-existing area in the electrostatic latent image, resulting in excessive consumption of toner

Method used

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  • Image forming apparatus and toner amount calculation method
  • Image forming apparatus and toner amount calculation method
  • Image forming apparatus and toner amount calculation method

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Experimental program
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no. 1 approach

[0021] figure 1 It is a side view showing part of the internal mechanical configuration of the image forming apparatus according to the embodiment of the present invention. The image forming apparatus is an apparatus having an electrophotographic printing function, such as a printer, a facsimile apparatus, a copier, and a multifunction peripheral.

[0022] The image forming apparatus of this embodiment includes a tandem color developing device. This color developing device has photosensitive drums 1a to 1d, an exposure device 2, and developing units 3a to 3d. The photosensitive drums 1 a to 1 d are photosensitive drums of four colors of cyan, magenta, yellow, and black.

[0023] The exposure devices 2 a to 2 d are devices that scan and irradiate the photosensitive drums 1 a to 1 d with laser light to form electrostatic latent images. The laser beam scans in a direction (main scanning direction) perpendicular to the rotation direction of the photosensitive drums 1 a to 1 d (...

no. 2 approach

[0076] Figure 5 It is a block diagram showing the configuration of the toner amount calculation unit 23 in the second embodiment. In the second embodiment, an edge enhancement amount determination unit 51 is used instead of the edge enhancement amount determination unit 33 . The edge enhancement amount determining section 51 executes the following (a) and (b) processes, that is, (a) performs the basic toner amount before the first spatial filtering process using a Gaussian difference (DoG (Difference of Gaussian)) filter. The second spatial filtering process; (b) setting the value obtained through the second spatial filtering process as the edge enhancement amount. In addition, specifically, in the second spatial filtering process, the sum of the product of the target pixel and surrounding pixels corresponding to the filter size and the filter coefficient is calculated as the second spatial filtering process result of the target pixel.

[0077] Image 6 It is a diagram for...

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Abstract

In the image forming device and the method for calculating the amount of toner provided by the present invention, the edge enhancement amount determination unit (33) determines the edge enhancement amount corresponding to the edge effect through spatial filtering; The non-block edge pixels count the toner consumption that includes the edge enhancement amount, and count the toner consumption that does not include the edge enhancement amount for the block edge pixels; on the other hand, the toner counter (40) counts the Edge pixels and non-block edge pixels count the toner consumption not including the edge enhancement amount; the count correction part (41) is based on the toner count value of the toner counter (39) and the toner count value of the toner counter (40). The difference of the count value calculates the toner consumption amount of the block.

Description

technical field [0001] The present invention relates to an image forming apparatus and a toner amount calculation method. Background technique [0002] Electrophotographic image forming apparatuses such as printers and multifunction peripherals obtain toner from a toner cartridge to form an image. In such an electrophotographic image forming apparatus, there is a device for measuring toner consumption. [0003] In an electrophotographic image forming apparatus, an electrostatic latent image is formed on a photosensitive drum or the like. A fringe electric field is generated at a boundary portion between a portion where halftone dots (dots) exist and a portion where halftone dots do not exist in the electrostatic latent image, resulting in excessive consumption of toner. This phenomenon is called "edge effect". Therefore, various methods of calculating toner consumption in consideration of edge effects have been proposed. [0004] In a certain image forming apparatus, a s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G15/08G03G15/00
CPCG03G15/0863G03G15/556G03G15/04072G03G15/50G03G15/5054G03G15/0865G03G15/16G03G15/5041
Inventor 六尾敏明田中宏树真下隆行
Owner KYOCERA DOCUMENT SOLUTIONS INC
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