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US 11,681,247 B2Granted
Image forming apparatus that can enhance usability by reducing the number of times a chart is placed on a reading device
AssigneeCanon Kabushiki Kaisha
InventorsMasato Kobayashi, Wataru Kato
Life of this patent
Estimating the term…
Abstract
An image forming apparatus that includes an image bearing member which can bear a toner image, a transfer member used to transfer a toner image onto a recording material from the image bearing member, and a reading device which reads density information of images on recording material disposed on a platen. The image forming apparatus forms a first chart on a first recording material and a second chart on a second recording material by sequentially transferring a plurality of test images while applying a plurality of test voltages to the transfer member. The two charts are read by the reading device and the transfer voltage is adjusted based on the reading result.
Claims17
An image forming apparatus comprising:
- an image bearing member configured to bear a toner image;
- a transfer member configured to transfer a toner image onto a recording material from the image bearing member;
- an application unit configured to apply a voltage to the transfer member;
- a platen on which a recording material is disposed when an image on the recording material is to be read;
- a reading device configured to read an image on a recording material disposed on the platen;
- and
- a control unit configured to execute an adjustment mode for adjusting a transfer voltage to be applied to the transfer member,
- wherein, in the adjustment mode, the control unit outputs a first chart formed by transferring a plurality of first test images to a first recording material by applying a plurality of first test voltages to the transfer member, and a second chart formed by transferring a plurality of second test images to a second recording material by applying a plurality of second test voltages to the transfer member, and is configured to adjust the transfer voltage applied to the transfer member based on a reading result of the reading device when the first recording material and the second recording material set together on the platen are read by the reading device.
5 more elements
An image forming apparatus comprising:
- an image bearing member configured to bear a toner image;
- a transfer member configured to transfer a toner image onto a recording material from the image bearing member;
- an application unit configured to apply a voltage to the transfer member;
- a reading device configured to read an image on a recording material;
- and
- a control unit configured to execute an adjustment mode for adjusting a transfer voltage to be applied to the transfer member,
- wherein, in the adjustment mode, the control unit outputs a first chart formed by transferring a plurality of first test images to a first recording material by applying a plurality of first test voltages to the transfer member, and a second chart formed by transferring a plurality of second test images to a second recording material by applying a plurality of second test voltages to the transfer member, and forms first identification information for identifying an orientation of the first chart on a surface on which the first test images are formed, and second identification information for identifying an orientation of the second chart is formed on a surface on which the second test images are formed, and
- wherein the control unit is configured to adjust the transfer voltage based on a reading result of the first test images, the second test images, the first identification information, and the second identification information that is obtained by the reading device.
5 more elements
An image forming apparatus comprising:
- an image bearing member configured to bear a toner image;
- a transfer member configured to transfer a toner image onto a recording material from the image bearing member;
- an application unit configured to apply a voltage to the transfer member;
- a reading device configured to read an image on a recording material;
- and
- a control unit configured to execute an adjustment mode for adjusting a transfer voltage to be applied to the transfer member,
- wherein, in the adjustment mode, the control unit outputs a first chart formed by transferring a plurality of first test images to a first recording material by applying a plurality of first test voltages to the transfer member, and a second chart formed by transferring a plurality of second test images to a second recording material by applying a plurality of second test voltages to the transfer member, and forms first identification information for identifying a page of the first chart on a surface on which the first test images are formed, and second identification information for identifying a page of the second chart on a surface on which the second test images are formed, and
- wherein the control unit is configured to adjust the transfer voltage based on a reading result of the first test images, and the second test images, and the first identification information and the second identification information that is obtained by the reading device.
5 more elements
Dependencies are inferred from the claim text.