17989055. IMAGE FORMING APPARATUS simplified abstract (CANON KABUSHIKI KAISHA)

IMAGE FORMING APPARATUS

Organization Name

CANON KABUSHIKI KAISHA

Inventor(s)

Hiroki Sasame of Tokyo (JP)

Tomoo Akizuki of Kanagawa (JP)

IMAGE FORMING APPARATUS - A simplified explanation of the abstract

This abstract first appeared for US patent application 17989055 titled 'IMAGE FORMING APPARATUS

Simplified Explanation

The patent application describes an image forming apparatus that includes various components such as a photosensitive member, a developing member, and a transfer member. These components work together to transfer a toner image onto a recording material.

• The image forming apparatus has a control portion that adjusts the back contrast formed on the surface of the photosensitive member during the transfer process.
• When transferring to a smaller width recording material followed by a larger width recording material, the control portion ensures that the second back contrast is larger than the first back contrast.
• The back contrast is adjusted by controlling the developing portion and the areas of the photosensitive member corresponding to the transfer portion.

Potential applications of this technology:

• This image forming apparatus can be used in various printing and copying machines.
• It can be applied in industries that require high-quality image transfer onto different sizes of recording materials.

Problems solved by this technology:

• The control of back contrast helps to ensure consistent and accurate toner image transfer onto recording materials of different widths.
• It prevents issues such as uneven toner distribution or incomplete transfer, which can result in poor print quality.

Benefits of this technology:

• The image forming apparatus provides improved image transfer performance, resulting in high-quality prints.
• It allows for efficient and reliable printing on recording materials of various widths.
• The control of back contrast ensures consistent and uniform toner image transfer, reducing the need for reprints or wasted materials.

Original Abstract Submitted

An image forming apparatus includes a photosensitive member, a developing member to supply a toner to the photosensitive member at a developing portion, a transfer member to transfer a toner image to a recording material passing through a transfer portion from the photosensitive member. In a case which the transfer is performed to a smaller width recording material and thereafter, the transfer is successively performed to a larger width recording material, a control portion controls a first back contrast formed when an area of a surface of the photosensitive member corresponding to the transfer portion through which the smaller width recording material is passing reaches the developing portion, and a second back contrast formed when an area of the surface corresponding to the transfer portion through which the larger width recording material is passing reaches the developing portion so that the second back contrast is larger than the first back contrast.