Image forming apparatus and feeding device
First Claim
1. An image forming apparatus comprising:
- an accommodation unit configured to accommodate a recording material;
a feeding member configured to feed a recording material accommodated in the accommodation unit;
a conveying member configured to convey a recording material fed by the feeding member;
a separating member configured to form a nip with the conveying member and separate a plurality of recording materials at the nip;
a detecting unit configured to detect that the plurality of recording materials has been fed to the nip;
a control unit which causes the feeding member to start feeding of a recording material accommodated in the accommodation unit and, in a case where the detecting unit detects that a plurality of recording materials is fed to the nip, causes the feeding member to finish the feeding;
an image forming unit configured to form an image on a recording material fed from the accommodation unit; and
a regulating unit configured to regulate an end on an upstream side in a feeding direction of recording materials accommodated in the accommodation unit,wherein the control unit measures a time period from start of feeding of a recording material performed by the feeding member to detection by the detecting unit of that a plurality of recording materials is fed to the nip and, based on the measured time period, outputs information indicating that a position of the regulating unit is deviated from a position according to a size of the recording materials accommodated in the accommodation unit.
1 Assignment
0 Petitions
Accused Products
Abstract
An image forming apparatus includes an accommodation unit, feeding, conveying, and separating members, and detecting, control, image forming, and regulating units. The conveying member conveys a fed recording material. The separating member forms a nip and separates recording materials. The detecting unit detects that the recording material has been fed to the nip. The feeding member starts feeding an accommodated recording material and, where a recording material is fed to the nip, causes the feeding to be finished. An image is formed on a fed recording material. The regulating unit regulates an end on an upstream side. The control unit measures a period from a recording material feeding to detection that a recording material is fed to the nip. Based on the measured period, information is output indicating that a position of the regulating unit is deviated from a position according to a size of the accommodated recording materials.
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Citations
15 Claims
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1. An image forming apparatus comprising:
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an accommodation unit configured to accommodate a recording material; a feeding member configured to feed a recording material accommodated in the accommodation unit; a conveying member configured to convey a recording material fed by the feeding member; a separating member configured to form a nip with the conveying member and separate a plurality of recording materials at the nip; a detecting unit configured to detect that the plurality of recording materials has been fed to the nip; a control unit which causes the feeding member to start feeding of a recording material accommodated in the accommodation unit and, in a case where the detecting unit detects that a plurality of recording materials is fed to the nip, causes the feeding member to finish the feeding; an image forming unit configured to form an image on a recording material fed from the accommodation unit; and a regulating unit configured to regulate an end on an upstream side in a feeding direction of recording materials accommodated in the accommodation unit, wherein the control unit measures a time period from start of feeding of a recording material performed by the feeding member to detection by the detecting unit of that a plurality of recording materials is fed to the nip and, based on the measured time period, outputs information indicating that a position of the regulating unit is deviated from a position according to a size of the recording materials accommodated in the accommodation unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A feeding device comprising:
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an accommodation unit configured to accommodate a recording material; a feeding member configured to feed a recording material accommodated in the accommodation unit; a conveying member configured to convey a recording material fed by the feeding member; a separating member configured to form a nip with the conveying member and separate a plurality of recording materials at the nip; a detecting unit configured to detect that the plurality of recording materials has been fed to the nip; a control unit which causes the feeding member to start feeding of a recording material accommodated in the accommodation unit and, in a case where the detecting unit detects that a plurality of recording materials is fed to the nip, causes the feeding member to finish the feeding; and a regulating unit configured to regulate an end on an upstream side in a feeding direction of recording materials accommodated in the accommodation unit, wherein the control unit measures a time period from start of feeding of a recording material performed by the feeding member to detection by the detecting unit of that a plurality of recording materials is fed to the nip and, based on the measured time period, outputs information indicating that a position of the regulating unit is deviated from a position according to a size of the recording materials accommodated in the accommodation unit. - View Dependent Claims (12, 13, 14, 15)
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Specification