18512282. IMAGE FORMING APPARATUS simplified abstract (CANON KABUSHIKI KAISHA)
Contents
IMAGE FORMING APPARATUS
Organization Name
Inventor(s)
Takayuki Kanazawa of Kanagawa (JP)
Takayoshi Kihara of Shizuoka (JP)
Kuniaki Tamagaki of Kanagawa (JP)
IMAGE FORMING APPARATUS - A simplified explanation of the abstract
This abstract first appeared for US patent application 18512282 titled 'IMAGE FORMING APPARATUS
Simplified Explanation
The patent application describes an image forming apparatus with a rotatable image bearing member, a developing member, a transfer member, and a brush contacting the image bearing member's surface in a specific portion of the apparatus.
- The toner not transferred onto a receiving member is collected by the developing member.
- The toner is positioned on the same side as the normal charge polarity of the toner in the charging series.
- In the contact portion, specific values for contact pressure, contact area ratio, and Clark-Evans index of the brush are maintained.
Potential Applications
- Printing technology
- Photocopying machines
- Document scanning devices
Problems Solved
- Efficient toner transfer
- Consistent image quality
- Reduced toner waste
Benefits
- Improved image clarity
- Enhanced printing efficiency
- Cost-effective toner usage
Original Abstract Submitted
An image forming apparatus includes a rotatable image bearing member, a developing member, a transfer member, and a brush contacting a surface of the image bearing member in a contact portion downstream of a transfer portion and upstream of a developing portion with respect to a rotational direction of the image bearing member. The toner which is not transferred onto a toner image receiving member is collected by the developing member. In a charging series, the toner is positioned on the same side as a normal charge polarity of the toner relative to the brush. In the contact portion, a maximum value of a contact pressure of 0.7 gf/mmor more and 3.5 gf/mmor less, a maximum contact area ratio is 18% or more and 74% or less, and a Clark-Evans index of the brush is 1 or more.
