Oki Data Corporation

Chugai Seiyaku Kabushiki Kaisha

Masahiro Yoshimoto

Yasushi Murakami

Masaki Takeuchi

Masuo Koizumi

Masanori Okada

Yoshitaka Iwane

Norio Shirakawa

Hiromi Tomioka

Hiroshi Sugiyama

Koji Urasawa

A printing apparatus has a plurality of image forming sections that are removably attached to a body of the printing apparatus and form images of different colors. The apparatus includes a specifying unit such as an operation panel and a control unit. The specifying unit specifies an image forming section that performs printing. The control unit controls the image forming section specified by the specifying unit to form an image of a corresponding color. The apparatus further includes a plurality of detectors that detect the presence and absence of corresponding image forming sections in the body. When the detector detects that a specified image forming section is present, the control unit controls the specified image forming section to operate. When the detector detects that the specified image forming section specified is absent, the control unit does not control the specified image forming section to operate.

Control of image forming sections of a printing apparatus with color registration

A color image printing apparatus has a plurality of positioning mechanisms each of which selectively positions a corresponding photoconductive drum at an operative position and a non-operative position. A controlling section selectively controls the positioning mechanisms in a first operation mode or in a second operation mode according to the color detected in the color plane by the color detecting section. The first operation mode is a mode where the controlling section causes a positioning mechanism corresponding to the color detected by the color detecting section to the operative position, and the positioning mechanism remains at the operative position throughout the job once it is brought to the operative position. The second operation mode is a mode where if only black is detected in the first page of a job then a photoconductive drum corresponding to black is brought to the operative position, and if any one of yellow, magenta, and cyan black is detected in a subsequent page, the controlling section causes all of the positioning mechanisms to be brought to their operative positions.

Color image printer

A plant growth regulator containing as an active ingredient one or more compounds represented by the formula ##STR1## wherein R, X, Y and Z are defined in the specification is disclosed. The plant growth regulator is effective for a wide variety of plants, particularly for grassy plants. In addition to such activity, the regulator of this invention acts on plants to thicken the foliage and to aid health growth without causing substantial phytotoxicity.

Plant growth regulator

Isonicotinanilide derivatives of the formula ##STR1## (wherein R.sub.1 is a hydrogen atom or a lower alkyl group; X is a halogen atom or methyl; n is an integer of from 0 to 2; R.sub.2 is phenyl, halo-substituted phenyl or a lower alkyl group; and Q is ##STR2## provided that Q is ##STR3## or --CH.sub.2 --when R.sub.2 is phenyl or halo-substituted phenyl, and Q is ##STR4## when R.sub.2 is a lower alkyl group) a process for preparing the same and a plant growth regulator containing the same are disclosed. The derivatives of the formula above have good activity for regulating the growth of various plants, especially of grassy plants.

Isonicotinanilide derivatives, plant growth regulating compositions and

Growing community of inventors

Tokyo, Japan

Masahiro Yoshimoto