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US 6,681,693 B2Granted
Image recording apparatus with drum balancing
AssigneeDainippon Screen Mfg. Co., Ltd.
InventorsToru Kawada, Toshio Tamura, Shiro Kitawaki, Ryuzo Tokimasa
Life of this patent
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AssigneeDainippon Screen Mfg. Co., Ltd.
InventorsToru Kawada, Toshio Tamura, Shiro Kitawaki, Ryuzo Tokimasa
Estimating the term…
An image recording apparatus for recording an image on a sensitive material mounted on a drum by emitting light beams to the sensitive material. The apparatus includes a cylindrical drum for supporting the sensitive material mounted peripherally thereof, a drive mechanism for rotating the drum with a rotary shaft disposed on an axis of the drum, guide members formed in opposite end surfaces of the drum and extending circumferentially about the rotary shaft, a pair of counterweights movable along each of the guide members, a moving mechanism for engaging each of the counterweights and moving relative to the drum, thereby to move the counterweight along the guide member, and a fixing mechanism for fixing the counterweight to the guide member in time of image recording.
An image recording apparatus for recording an image on a sensitive material mounted on a drum by emitting light beams to the sensitive material, comprising:
An image recording apparatus for recording an image on a sensitive material mounted on a drum by emitting light beams to the sensitive material, comprising:
An image recording apparatus for recording an image on a sensitive material mounted on a drum by emitting light beams to the sensitive material, comprising:
Dependencies are inferred from the claim text.
Drawings are temporarily unavailable. Open the PDF at USPTO
From the US filing history. Foreign family members aren’t listed.
Scanning arrangements , i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing…:…
Exposure; Apparatus therefor: curved surfaces
Scanning different formats; Scanning with different densities of dots per unit length, e.g. different numbers of dots per inch ; Conversion of…:…
Mounting or handling printing plates; Forming printing surfaces in situ: forming the printing surface directly on the form cylinder
Term ended 22 Feb 2022 (estimated)
1. Field of the Invention
The present invention relates to an image recording apparatus for recording an image on a sensitive material such as a printing plate mounted on a drum by emitting light beams to the sensitive material.
2. Description of the Related Art
For the purpose of illustrating the invention, there are shown in the drawings several forms which are presently preferred, it being understood, however, that the invention is not limited to the precise arrangement and instrumentalities shown.
FIG. 1 is a partly exploded perspective view showing an outline of an image recording apparatus according to the present invention.
FIG. 2 is a schematic front view of the image recording apparatus according to the invention.
Embodiments of the present invention will be described hereinafter with reference to the drawings. FIG. 1 is a partly exploded perspective view showing an outline of an image recording apparatus according to the invention. FIG. 2 is a schematic front view of the apparatus.
This image recording apparatus includes a cylindrical drum 11, a recording head 12, a punch unit 13, a sensitive material feed unit 14 and an electrical unit 15.
The drum 11 serves to carry a sensitive material 10 mounted peripherally thereof, and includes a leading end clamp 21 for fixedly holding the leading end of sensitive material 10, a trailing end clamp 22 for fixedly holding the trailing end of sensitive material 10, and suction bores, not shown, for sucking the back of sensitive material 10. The leading end clamp 21 is pivotable about an axis 23 (FIG. 2) by the action of a leading clamp opening and closing mechanism 24, to switch between a position for holding the forward end of sensitive material 10 and a position for releasing the forward end. The trailing end clamp 22 is movable, by the action of a trailing end clamp opening and closing mechanism 25, between a position for holding and fixing the rear end of sensitive material 10 to the surface of drum 11 and a position separated from the drum 11 for releasing the rear end of sensitive material 10.