Claims
- 1. A method for mounting a lithoplate comprising a support of a paper or a plastic film, to a lithoplate mounting device comprising,
- the step of providing a plate cylinder for lithographic printing having a cutout portion with a head end and a tail end,
- the step of providing a head clamp disposed at said head end of said cutout portion of said plate cylinder, said head clamp having an upper blade and a lower blade,
- the step of providing a tail clamp disposed at said tail end of said cutout portion of said plate cylinder, said tail clamp having an upper blade and a lower blade, and
- the step of providing a register pin fixed to said lower blade of said head clamp,
- wherein said upper blade of said head clamp defines a hole that allows the register pin to pass completely through, said register pin being sufficiently long to extend entirely through said hole in said upper blade of said head clamp such that it has a portion that extends above an upper surface of said upper blade of said head clamp,
- which method further comprises the steps of:
- clamping a plate cylinder packing to the head clamp and the tail clamp; and
- inserting the portion of said register pin that extends above said upper surface of said upper blade into a pin hole of said lithoplate, thus mounting the lithoplate to the device.
- 2. A method for mounting a lithoplate comprising a support of a paper or a plastic film, to a lithoplate mounting device comprising,
- the step of providing a plate cylinder for lithographic printing having a cutout portion with a head end and a tail end,
- the step of providing a head clamp disposed at said head end of said cutout portion of said plate cylinder, said head clamp having an upper blade and a lower blade,
- the step of providing a tail clamp disposed at said tail end of said cutout portion of said plate cylinder, said tail clamp having an upper blade and a lower blade, and
- the step of providing a register pin fixed to said lower blade of said head clamp,
- wherein said step of providing said head clamp, said upper blade defines a hole that allows the register pin to pass completely through, said register pin being sufficiently long to extend entirely through said hole in said upper blade of said head clamp such that it has a portion that extends above an upper surface of said upper blade of said head clamp, and wherein said step of providing said register pin, said portion of said register pin that extends above said upper blade of said head clamp has a head portion which is wider than a remaining portion of said register pin that can pass through a hole defined by a lithoplate, said head portion attaches said lithoplate to said plate cylinder to prevent said lithoplate from detaching in operation,
- which method further comprises the steps of:
- clamping a plate cylinder packing to the head clamp and the tail clamp: and
- inserting the portion of said register pin that extends above said upper surface of said upper blade into a pin hole of said lithoplate, thus mounting the lithoplate to the device.
- 3. A method for mounting a lithoplate according to claim 2, wherein said step of providing a head portion the head portion has a shape that attaches said lithoplate to said plate cylinder and prevents said lithoplate from detaching in operation.
- 4. A method for mounting a lithoplate according to claim 2, wherein said step of providing a head portion the head portion has a v-shaped pin with a first configuration which can pass through a hole defined by a lithoplate, and a second configuration that prevents said lithoplate from detaching in operation.
- 5. A method for mounting a lithoplate comprising a support of a paper or a plastic film, to a lithoplate mounting device comprising,
- the step of providing a plate cylinder for lithographic printing having a cutout portion with a head end and a tail end,
- the step of providing a head clamp disposed at said head end of said cutout portion of said plate cylinder, said head clamp having an upper blade and a lower blade,
- the step of providing a tail clamp disposed at said tail end of said cutout portion of said plate cylinder, said tail clamp having an upper blade and a lower blade, and
- the step of providing a register pin fixed to said lower blade of said head clamp,
- the step of providing a roller disposed on an upper surface of said upper blade proximate to said register pin, wherein said roller can rotate freely about an axis of rotation,
- wherein said step of providing said head clamp, said upper blade defines a hole that allows the register pin to pass completely through, said register pin being sufficiently long to extend entirely through said hole in said upper blade of said head clamp such that it has a portion that extends above an upper surface of said upper blade of said head clamp,
- which method further comprises the steps of:
- clamping a plate cylinder packing to the head clamp and the tail clamp: and
- inserting a head edge of the lithoplate along said roller, whereby inserting the portion of said register pin that extends above said upper surface of said upper blade into a pin hole of said lithoplate, thus mounting the lithoplate to the device.
- 6. A method for mounting a lithoplate comprising a support of a paper or a plastic film, to a lithoplate mounting device which comprises,
- the step of providing a plate cylinder for lithographic printing having a cutout portion with a head end and a tail end,
- the step of providing a head clamp disposed at said head end of said cutout portion of said plate cylinder, said head clamp having an upper blade and a lower blade,
- the step of providing a tail clamp disposed at said tail end of said cutout portion of said plate cylinder, said tail clamp having an upper blade and a lower blade for clamping a lithoplate, and
- the step of providing a covering member having a first end and a second end opposite said first end, said first end being attached at said upper blade of said tail clamp, said second end being projected at least 5 mm from an end of said upper blade of said tail clamp,
- which method further comprises the steps of:
- clamping a support to said head clamp and said tail clamp; and
- mounting the lithoplate to the device so as to cover at least a part of the lithoplate tail edge by the portion projected from the end of the upper blade of said covering member.
- 7. A method for mounting a lithoplate according to claim 6, wherein said step of providing said covering member, said covering member is a plate member.
- 8. A method for mounting a lithoplate according to claim 7, wherein said step of providing said covering member, said plate member is formed of a material selected from the group consisting of a metal and a plastic.
Parent Case Info
This is a continuation of application No. 08/616,515, filed on Mar. 19, 1996, which was abandoned upon the filing hereof Sep. 18. 1997.
US Referenced Citations (6)
Foreign Referenced Citations (6)
Number |
Date |
Country |
623915 |
Jul 1927 |
FRX |
886311 |
Aug 1953 |
DEX |
888250 |
Aug 1953 |
DEX |
2437758 |
Feb 1976 |
DEX |
2522061 |
Nov 1976 |
DEX |
6711999 |
Mar 1969 |
NLX |
Continuations (1)
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Number |
Date |
Country |
Parent |
616515 |
Mar 1996 |
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