Brother Kogyo Kabushiki-Kaisha

Junji Shiota

Takayuki Iwase

Hironori Harada

Hisao Kurachi

Takeo Ito

Kazuo Nakamura

Yasunori Kitazawa

A tape cutting device includes a fixed blade fixed to a frame and a movable blade fixed to a manually pivotable lever. A printing operation to the print tape is performed by a print head and a platen. In this case, the tape runs by the rotation of the press roller and a tape feed roller, those being driven by a driving motor 2 through a power transmitting portion including a gear train. A gear of the gear train is associated with a tape cutting prevention mechanism including a stop lever. When the tape printing operation is carried out, the stop lever is movable to a first pivot position where the manually pivotable lever is abuttable on the stop lever to prevent the manually pivotable lever to be angularly rotated. When the tape is to be cut, the stop lever is moved to a second pivot position offset from the manually pivotable lever. Thus, the movable blade can be moved toward the fixed blade to cut the tape.

Print tape forming apparatus having tape cutting mechanism

An end separating device for a sheet having a backing paper, which can easily separate a film of the sheet from the backing paper without requiring half cutting of the sheet. A fixing and separating member is fixed to a movable blade of a cutter for cutting a tape, and another fixing and separating member is fixed to a fixed blade of the cutter. These fixing and separating members and cooperate to bend and fix a cut end portion of the tape. Accordingly, the cut end portion of the tape is bent. After the tape is released from the fixing and separating members, a film tape is elastically returned to an original condition owing to its relatively large stiffness, but a backing paper is plastically deformed at the bent portion. As a result, the film tape can be separated from the backing paper. In other embodiments of an end separating device, a separating member is passed along end surfaces of free end portions of the sheet. The separating member bends the end surfaces to plastically deform the backing paper and enable separation of the backing paper.

End separating device for sheet having a backing paper

In a printer, a printing clutch and a hammer impact changeover mechanism are controlled through a control member by one electromagnet, in such a manner that in response to a printing signal the clutch is engaged through the control member by the electromagnet to start one printing cycle and, in the second half of the printing cycle, the electromagnet is operated to enable a hammer impact change-over mechanism with the aid of the control member. The energizing forces of two weak spring members are applied to a cam follower member operatively coupled to the printing hammer so that when a printing type element having a large printing surface is selected, the energizing forces of the two spring members are utilized to allow the printing hammer to strike the type element strongly, and when a type element having a small printing surface is selected, the energizing force of only one of the two spring member is utilized to allow the printing hammer to strike the type element less strongly.

Printer

A ribbon driving mechanism for a typewriter, having a cam member provided on one side thereof with a first cam section for effecting control of a printing ribbon, and a second cam section extending continuously from the first cam section for effecting control of a correction tape, and a stopping member for controlling the movement of a cam follower along the cam sections. Either the printing ribbon or the correction tape is moved selectively to the printing position and only the rotation of a motor for driving the cam member in one particular direction, is transmitted to a printing ribbon winding mechanism, to wind the printing ribbon.

Growing community of inventors

Nagoya, Japan

Junji Shiota