Back to results
US 6,445,900 B2Granted
Image formation apparatus, and a method of stopping the working of the image formation apparatus after completion of a job
AssigneeRicoh Company, Ltd.
InventorsTakeshi Fukao, Mitsuru Takahashi
Life of this patent
Estimating the term…
Abstract
After an image forming operation is finished, a motor that drives a belt is stopped after a predetermined time period passes since a sensor detects the only one mark provided on the belt. The predetermined time period is different for first, second and third job. This is repeated for the jobs thereafter. One job is a series of processing from the start of the motor to the stop of the motor. Thus, the belt stops at three different position for each consecutive three jobs.
Claims9
An image formation apparatus comprising:
- a belt-shaped member having only one mark to be used for position detection;
- a mark sensor which detects said mark on said belt-shaped member;
- a plurality of holding members each of which rotatably holds said belt-shaped member;
- a drive unit which drives said holding members;
- and
- a timer which measures at least three predetermined desired times having different time durations, and starts measuring time each time said mark sensor detects said mark;
- and
- a control unit which controls rotation/stopping of said drive unit based on the time measured by said timer in such a manner that said belt-shaped member stops at least three different positions.
5 more elements
An image formation apparatus comprising:
- a belt having only one mark provided thereon for position detection of said belt;
- a mark sensor which detects said mark on said belt;
- a plurality of rollers each of which rotatably holds said belt;
- a motor which drives said rollers;
- and
- a timer which measures at least three predetermined desired times having different time durations, and starts measuring time from the point of time from when said mark sensor has detected said mark after completion of a job;
- and
- a control unit which controls rotation/stopping of said motor based on the time measured by said timer,
- wherein said control unit stops said motor, after completion of a job, and stops said belt in such a manner that said mark on said belt comes to a halt at a position which is different from the position said mark was positioned after completion of the preceding job.
6 more elements
An image formation apparatus comprising:
- a belt having only one mark provided thereon for position detection of said belt;
- a mark sensor which detects said mark on said belt;
- a plurality of rollers each of which rotatably holds said belt;
- a motor which drives said roller;
- a timer which measures at least three predetermined desired times having different time durations, from the point of time from when said mark sensor has detected said mark after completion of alternate jobs;
- and
- a control unit which controls rotation/stopping of said motor and stops rotation of said motor when said timer has completed measurement of the predetermined desired time.
4 more elements
Dependencies are inferred from the claim text.