Printing apparatus having improved paper cutting function
First Claim
Patent Images
1. A printer with a photosensitive member comprising:
- an image forming section for forming an toner image on a surface of the photosensitive member;
continuous paper to which the toner image is transferred from the photosensitive member;
a paper feeding unit for feeding the continuous paper along a feeding path to the surface of the photosensitive member; and
a cutting unit for cutting the continuous paper to provide a cut sheet, the cutting unit being arranged upstream from the photosensitive member;
wherein the paper feeding unit includes a first tractor arranged upstream from the photosensitive member, and a second tractor arranged upstream from the photosensitive member but downstream from the first tractor, each of the first and second tractors including a rotating member provided with a plurality of protrusions which are inserted into feed holes formed in the continuous paper; and
wherein the cutting unit is arranged to cut the continuous paper between the first tractor and the second tractor after a leading portion of the continuous paper reaches the surface of the photosensitive member.
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Accused Products
Abstract
A printer is provided which includes an image forming section for forming an toner image on a surface of a photosensitive drum, a paper feeding unit for feeding continuous paper along a feeding path to the surface of the photosensitive drum, and a cutting unit for cutting the continuous paper to provide cut sheets. The cutting unit is arranged to cut the continuous paper after the leading portion of the continuous paper reaches the surface of the photosensitive drum.
6 Citations
17 Claims
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1. A printer with a photosensitive member comprising:
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an image forming section for forming an toner image on a surface of the photosensitive member;
continuous paper to which the toner image is transferred from the photosensitive member;
a paper feeding unit for feeding the continuous paper along a feeding path to the surface of the photosensitive member; and
a cutting unit for cutting the continuous paper to provide a cut sheet, the cutting unit being arranged upstream from the photosensitive member;
wherein the paper feeding unit includes a first tractor arranged upstream from the photosensitive member, and a second tractor arranged upstream from the photosensitive member but downstream from the first tractor, each of the first and second tractors including a rotating member provided with a plurality of protrusions which are inserted into feed holes formed in the continuous paper; and
wherein the cutting unit is arranged to cut the continuous paper between the first tractor and the second tractor after a leading portion of the continuous paper reaches the surface of the photosensitive member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A printer with a photosensitive member comprising:
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an image forming section for forming a toner image on a surface of the photosensitive member;
continuous paper to which the toner image is transferred from the photosensitive member; and
a paper feeding unit for feeding the continuous paper along a feeding path to the surface of the photosensitive member;
wherein the continuous paper is provided with cut lines arranged at regular intervals longitudinally of the continuous paper, each of the cut lines including at least one cut;
wherein the paper feeding unit includes a first tractor arranged upstream from the photosensitive member, and a second tractor arranged upstream from the photosensitive member but downstream from the first tractor, each of the first and the second tractors including a rotating member provided with a plurality of protrusions which are inserted into feed holes formed in the continuous paper; and
wherein the second tractor is driven at a higher rate than the first tractor for cutting the continuous paper at each cut line between the first tractor and the second tractor after a leading portion of the continuous paper reaches the surface of the photosensitive member.
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16. A printer with a photosensitive member comprising:
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an image forming section for forming a toner image on a surface of the photosensitive member;
continuous paper to which the toner image is transferred from the photosensitive member;
a paper feeding unit for feeding the continuous paper along a feeding path to the surface of the photosensitive member; and
a cutting unit for cutting the continuous paper to provide a cut sheet, the cutting unit being arranged upstream from the photosensitive member;
wherein the continuous paper is provided with cut lines arranged at regular intervals longitudinally of the continuous paper, each of the cut lines including at least one cut;
wherein the cutting unit is arranged to cut the continuous paper after a leading portion of the continuous paper reaches the surface of the photosensitive member; and
wherein the cutting unit is movable along the feeding path of the continuous paper.
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17. A printer with a photosensitive member comprising:
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an image forming section for forming a toner image on a surface of the photosensitive member;
continuous paper to which the toner image is transferred from the photosensitive member;
a paper feeding unit for feeding the continuous paper along a feeding path to the surface of the photosensitive member; and
a cutting unit for cutting the continuous paper to provide a cut sheet, the cutting unit being arranged upstream from the photosensitive member;
wherein the cutting unit is arranged to cut the continuous paper after a leading portion of the continuous paper reaches the surface of the photosensitive member;
wherein the continuous paper is provided with cut lines arranged at regular intervals longitudinally of the continuous paper, each of the cut lines including at least one cut;
wherein the paper feeding unit includes a first tractor arranged upstream from the photosensitive member, and a second tractor arranged downstream from the first tractor, each of the first and the second tractors including a rotating member provided with a plurality of protrusions which are inserted into feed holes formed in the continuous paper; and
wherein the first tractor is arranged to exert a resisting force on the continuous paper advancing along the feeding path, so that the continuous paper is cut at each cut line.
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Specification