Stencil printer having an electric field between the print drum and the pressing member
AssigneeTohoku Ricoh Co., Ltd.
InventorFuchio Takeda
Life of this patent
Estimating the term…
Abstract
A stencil printer of the present invention includes a print drum and a pressing member. After a cut stencil or master has been wrapped around the print drum, the pressing member presses a paper or similar recording medium against the master. As a result, ink fed to the print drum oozes out to the paper and prints a desired image thereon. When the pressing member presses the paper against the master, an electric field is formed between the pressing member and the print drum in the direction in which the ink migrates from the drum to the paper. The printer is capable of adjusting image density without varying a mechanical pressure to act on the drum or varying the print speed.
Claims39
A stencil printer comprising:
- a print drum for receiving ink with a master wrapped therearound;
- a pressing member for pressing a recording medium against the master to thereby cause the ink to ooze out onto the recording medium;
- electric field forming means for forming, when said pressing member presses the recording medium against the master, an electric field between said print drum and said pressing member in a direction in which the ink migrates from said print drum toward the recording medium;
- and
- means for adjusting an intensity of said electric field.
Dependencies are inferred from the claim text.