Stencil printing machine, ink recovering method, image unevenness preventing method, and ink adapting method
First Claim
1. A stencil printing machine, comprising:
- a rotatable printing drum including an outer peripheral wall of ink impermeable member, wherein a stencil paper is mounted on the surface of the outer peripheral wall;
an ink supplying mechanism including an ink supplying unit in the outer peripheral wall of the printing drum, configured to supply ink from the ink supplying unit to the surface of the outer peripheral wall;
a pressure roller configured to press a fed print medium against the outer peripheral wall;
an ink recovering mechanism configured to recover ink which has flown out of a maximum printing area of the outer peripheral wall of the printing drum; and
a pressing mechanism configured to press the stencil paper against the outer peripheral wall of the printing drum.
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Accused Products
Abstract
A stencil printing machine has a rotatable printing drum including an outer peripheral wall of ink impermeable material. A stencil paper is mounted on the surface of the outer peripheral wall. An ink supplying mechanism includes an ink supplying unit in the outer peripheral wall of the printing drum. The ink supplying mechanism supplies ink from the ink supplying unit to the surface of the outer peripheral wall. A pressure roller presses a fed print sheet against the outer peripheral wall. An ink recovering mechanism recovers ink which has flown out of a maximum printing area of the outer peripheral wall of the printing drum. A pressing mechanism presses the stencil paper against the outer peripheral wall of the printing drum.
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Citations
15 Claims
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1. A stencil printing machine, comprising:
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a rotatable printing drum including an outer peripheral wall of ink impermeable member, wherein a stencil paper is mounted on the surface of the outer peripheral wall;
an ink supplying mechanism including an ink supplying unit in the outer peripheral wall of the printing drum, configured to supply ink from the ink supplying unit to the surface of the outer peripheral wall;
a pressure roller configured to press a fed print medium against the outer peripheral wall;
an ink recovering mechanism configured to recover ink which has flown out of a maximum printing area of the outer peripheral wall of the printing drum; and
a pressing mechanism configured to press the stencil paper against the outer peripheral wall of the printing drum. - View Dependent Claims (2, 3, 4, 5, 6, 7, 14, 15)
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8. An ink recovering method used for a stencil printing machine, the stencil printing machine which is provided with:
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a rotatable printing drum including an outer peripheral wall of ink impermeable material, wherein a stencil paper is mounted on the surface of the outer peripheral wall;
an ink supplying mechanism including an ink supplying unit in the outer peripheral wall of the printing drum, configured to supply ink from the ink supplying unit to the surface of the outer peripheral wall;
a pressure roller configured to press a fed print medium against the outer peripheral wall;
an ink recovering mechanism configured to recover ink which has flown out of a maximum printing area of the outer peripheral wall of the printing drum; and
a pressing mechanism configured to press the stencil paper against the outer peripheral wall of the printing drum, the ink recovering method comprising;
causing the outer peripheral wall to be rotated while the stencil paper is pressed against the outer peripheral wall by the pressing mechanism to move ink between the stencil paper and the outer peripheral wall; and
recovering ink, which has flown out of the maximum printing area of the outer peripheral wall, by the ink recovering mechanism. - View Dependent Claims (9, 10, 11)
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12. An image unevenness preventing method for a stencil printing machine, the stencil printing machine which is provided with:
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a rotatable printing drum including an outer peripheral wall of ink impermeable material, wherein a stencil paper is mounted on the surface of the outer peripheral wall;
an ink supplying mechanism including an ink supplying unit in the outer peripheral wall of the printing drum, configured to supply ink from the ink supplying unit to the surface of the outer peripheral wall;
a pressure roller configured to press a fed print medium against the outer peripheral wall;
an ink recovering mechanism configured to recover ink which has flown out of a maximum printing area of the outer peripheral wall of the printing drum; and
a pressing mechanism configured to press the stencil paper against the outer peripheral wall of the printing drum, the image unevenness preventing method, wherein, in the course of an printing operation, the printing operation is performed in a state that the stencil paper is pressed against the outer peripheral wall by the pressing mechanism
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13. An ink adapting method of a stencil printing machine, the stencil printing machine which is provided with:
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a rotatable printing drum including an outer peripheral wall of ink impermeable material, wherein a stencil paper is mounted on the surface of the outer peripheral wall;
an ink supplying mechanism including an ink supplying unit in the outer peripheral wall of the printing drum, configured to supply ink from the ink supplying unit to the surface of the outer peripheral wall;
a pressure roller configured to press a fed print medium against the outer peripheral wall;
an ink recovering mechanism configured to recover ink which has flown out of a maximum printing area of the outer peripheral wall of the printing drum; and
a pressing mechanism configured to press the stencil paper against the outer peripheral wall of the printing drum, the ink adapting method, wherein in the course of an operation of mounting the stencil paper on the printing drum, ink is supplied from the ink supplying unit, and concurrently the stencil paper is pressed against the outer peripheral wall by the pressing mechanism.
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Specification