Incremental printing of symbolic information – Ink jet – Controller
Reexamination Certificate
2003-04-18
2004-12-14
Meier, Stephen D. (Department: 2853)
Incremental printing of symbolic information
Ink jet
Controller
C347S101000, C347S104000
Reexamination Certificate
active
06830304
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an image-forming apparatus having a cutting device for cutting a sheet printing medium and a cutting method for cutting a sheet member in the image-forming apparatus.
2. Description of the Related Art
In an image-forming apparatus, such as a plotter or a printer, using a roll or a large-sized sheet printing medium, after it is printed thereon, the sheet printing medium is cut into an arbitrary size as needed. Examples of such cutting devices include a device having a carriage and a cutter unit engaged with the carriage as disclosed in Japanese Patent Laid-Open No. 6-198989 and a device having a blade movable in the cutting direction independently from the carriage.
Examples of such a large-sized sheet printing media include, in addition to ordinary paper, coated paper, in which a surface of the paper is coated with an ink-penetrative material such as calcium carbonate and alumina, cloth coated with a similar material, and a polyester film (these will be referred to below as sheet members).
However, a conventional cutting device of the image-forming apparatus has problems in cutting a sheet member as follows.
That is, by the cutting impact, dust is produced in the case of paper and coating dust is generated in the case of coated paper. In a film, a surface layer may be delaminated therefrom so as to fly in all directions. If these fine particles or fine pieces (referred to below as fine particles) adhere on a printing region of the sheet member, degradation of an image may result. If the fine particles attach to a nozzle of an ink-ejection head, ink non-ejection or a malfunction of the head may result.
SUMMARY OF THE INVENTION
In view of the situation described above, the present invention has been made and it is an object thereof to provide an image-forming apparatus capable of preventing fine particles due to cutting of a sheet member.
Further objects, features and advantages of the present invention will become apparent from the following description of the preferred embodiments with reference to the attached drawings.
REFERENCES:
patent: 2001/0055044 (2001-12-01), Matsumoto et al.
patent: 6-198989 (1994-07-01), None
Ishitsu Tomohiro
Kobayashi Kazumi
Miura Takeshi
Suzuki Ryo
Canon Kabushiki Kaisha
Dudding Alfred
Fitzpatrick ,Cella, Harper & Scinto
Meier Stephen D.
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