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US 12,541,168 B2Granted
Image forming apparatus
AssigneeKYOCERA Document Solutions Inc.
InventorsYuta Ikeda, Haruna Takamura, Yukiko Yoshimura, Mutsuki Kanda, Hideyuki Ogasawara, Ryota Maeda
Life of this patent
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Abstract
A controller that corrects tilt of recording paper by rotating a rotation board on which a resist roller pair for feeding recording paper to an image forming device is provided about a support as a rotation axis, and tilting roller shafts of the resist roller pair upstream or downstream with respect to a transport direction, and another controller that corrects a rotation speed of the resist roller pair based on a direction and amount of tilt of the roller shafts are included.
Claims16
An image forming apparatus comprising:
- an image forming device configured to form an image on recording paper;
- a resist roller provided upstream of the image forming device in a predetermined recording paper transport direction and configured to feed the recording paper to the image forming device;
- a first controller includes a first processor and configured to perform rotation control for the resist roller, through the first processor executing a first control program;
- a tilt detection sensor configured to detect a tilt of the recording paper with respect to the transport direction;
- a tilt mechanism configured to tilt a roller shafts of the resist roller whose initial state is a state where the roller shaft is perpendicular to the transport direction, upstream or downstream with respect to the transport direction;
- and
- a second controller includes a second processor and configured to perform control for causing the tilt mechanism to tilt the roller shaft upstream or downstream with respect to the transport direction based on a detection result of the tilt detection sensor, and causing the tilt mechanism to return the tilted roller shaft to the initial state when the recording paper reaches the resist roller, through the second processor executing a second control program, wherein
- the second controller transmits tilt data indicating a direction and amount of tilt of the roller shaft to the first controller, and
- the first controller corrects a rotation speed of the resist roller based on the direction and amount of tilt of the roller shaft indicated by the tilt data received from the second controller,
- wherein the second controller determines tilt data indicating a direction and amount of tilt of the roller shaft based on a detection result of the tilt detection sensor, and transmits a predetermined command code having a smaller data amount than the tilt data to the first controller, instead of transmitting the tilt data to the first controller, when the direction and amount of tilt of the roller shaft determined at a current time is the same as the direction and amount of tilt of the roller shaft determined at a previous time or when a difference between both is within a predetermined setting range, and
- the first controller performs the correction of the rotation speed using the tilt data received at a previous time when the first controller has received the command code.
8 more elements
An image forming apparatus comprising:
- an image forming device configured to form an image on recording paper;
- a resist roller provided upstream of the image forming device in a predetermined recording paper transport direction and configured to feed the recording paper to the image forming device;
- a first controller includes a first processor and configured to perform rotation control for the resist roller, through the first processor executing a first control program;
- a tilt detection sensor configured to detect a tilt of the recording paper with respect to the transport direction;
- a tilt mechanism configured to tilt a roller shafts of the resist roller whose initial state is a state where the roller shaft is perpendicular to the transport direction, upstream or downstream with respect to the transport direction;
- and
- a second controller includes a second processor and configured to perform control for causing the tilt mechanism to tilt the roller shaft upstream or downstream with respect to the transport direction based on a detection result of the tilt detection sensor, and causing the tilt mechanism to return the tilted roller shaft to the initial state when the recording paper reaches the resist roller, through the second processor executing a second control program, wherein
- the second controller transmits tilt data indicating a direction and amount of tilt of the roller shaft to the first controller, and
- the first controller corrects a rotation speed of the resist roller based on the direction and amount of tilt of the roller shaft indicated by the tilt data received from the second controller,
- wherein the first controller performs the correction of the rotation speed of the resist roller when a communication abnormality for the tilt data is not detected, and performs predetermined adjustment processing for the rotation speed of the resist roller when a communication abnormality is detected.
7 more elements
An image forming apparatus comprising:
- an image forming device configured to form an image on recording paper;
- a resist roller provided upstream of the image forming device in a predetermined recording paper transport direction and configured to feed the recording paper to the image forming device;
- a first controller includes a first processor and configured to perform rotation control for the resist roller, through the first processor executing a first control program;
- a tilt detection sensor configured to detect a tilt of the recording paper with respect to the transport direction;
- a tilt mechanism configured to tilt a roller shafts of the resist roller whose initial state is a state where the roller shaft is perpendicular to the transport direction, upstream or downstream with respect to the transport direction;
- and
- a second controller includes a second processor and configured to perform control for causing the tilt mechanism to tilt the roller shaft upstream or downstream with respect to the transport direction based on a detection result of the tilt detection sensor, and causing the tilt mechanism to return the tilted roller shaft to the initial state when the recording paper reaches the resist roller, through the second processor executing a second control program, wherein
- the second controller transmits tilt data indicating a direction and amount of tilt of the roller shaft to the first controller, and
- the first controller corrects a rotation speed of the resist roller based on the direction and amount of tilt of the roller shaft indicated by the tilt data received from the second controller,
- wherein the second controller transmits the tilt data to the first controller via a first communication line, and
- the first controller performs the correction of the rotation speed of the resist roller when the communication abnormality for the tilt data is not detected, and transmits a predetermined non-implementation notification for preventing the second controller from performing the control on the roller shaft to the second controller via a second communication line different from the first communication line when the communication abnormality is detected.
8 more elements
Dependencies are inferred from the claim text.