US Patent Application 18223161. IMAGE FORMING APPARATUS simplified abstract

IMAGE FORMING APPARATUS

Organization Name

CANON KABUSHIKI KAISHA

Inventor(s)

Koji An of Saitama (JP)

Shinji Katagiri of Kanagawa (JP)

IMAGE FORMING APPARATUS - A simplified explanation of the abstract

This abstract first appeared for US patent application 18223161 titled 'IMAGE FORMING APPARATUS

Simplified Explanation

The patent application describes an image forming apparatus that controls the transfer voltage applied to a transfer member in order to maintain a constant transfer voltage.

• The transfer voltage is controlled to be substantially constant by the applying portion.
• The controller adjusts the transfer voltage based on the toner amount used for a toner image.
• If the toner amount is greater than a first toner amount, the transfer voltage is reduced to a second voltage with a lower absolute value.
• The acquiring portion collects toner amount information for each toner image transferred onto a single recording material.

Original Abstract Submitted

An image forming apparatus includes an image bearing member, a transfer member, an acquiring portion, an applying portion, and a controller. When a transfer voltage is subjected to constant-voltage control so that the transfer voltage applied to the transfer member by the applying portion is substantially constant, in a case that the transfer voltage when a toner amount used for a toner image is a first toner amount is a first voltage, the controller controls the applying portion so that the transfer voltage is a second voltage smaller lower in absolute value than the first voltage in a case that the toner amount is a second toner amount ager greater than the first toner amount. The acquiring portion acquires toner amount information on the toner amount for each toner image transferred onto a single recording material.