摘要:
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.
摘要:
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.
摘要:
An EPDM foam is obtained by foaming a foam composition containing, based on 100 parts by weight of an ethylenepropylenediene rubber, 0.1 to 5 parts by weight of a vulcanizer, 0.1 to 10 parts by weight of a vulcanization accelerator, 1 to 30 parts by weight of a foaming agent, and a foaming auxiliary agent. The vulcanization accelerator contains a thiourea vulcanization accelerator, a thiazole vulcanization accelerator, a dithiocarbamate vulcanization accelerator, and a thiuram vulcanization accelerator such that a thiourea vulcanization accelerator/thiazole vulcanization accelerator/dithiocarbamate vulcanization accelerator/thiuram vulcanization accelerator weight ratio is in a range of 1 to 20/1 to 20/1 to 20/1 to 30.
摘要:
An EPDM foam contains an ethylene-propylene-diene rubber, in which the EPDM foam has water stopping performance lasting for 1 hour or more according to 50% waterstop test and metal corrosion is not observed according to metal corrosion test.
摘要:
A hub includes first and second side surfaces respectively opposed to inner and outer circumferential surfaces of an upper portion of a magnetic member, and a ceiling surface arranged to interconnect an upper ends of the first and second side surfaces. The adhesive agent is interposed between the inner circumferential surface of the upper portion of the magnetic member and the first side surface of the hub and between the upper surface of the magnetic member and the ceiling surface of the hub. Radial distance between the inner circumferential surface of the upper portion of the magnetic member and the first side surface of the hub and axial distance between the upper surface of the magnetic member and the ceiling surface of the hub are smaller than radial distance between the outer circumferential surface of the upper portion of the magnetic member and the second side surface of the hub.
摘要:
An EPDM foam is obtained by foaming a foam composition containing, based on 100 parts by weight of an ethylenepropylenediene rubber, 0.1 to 5 parts by weight of a vulcanizer, 0.1 to 10 parts by weight of a vulcanization accelerator, 1 to 30 parts by weight of a foaming agent, and a foaming auxiliary agent. The vulcanization accelerator contains a thiourea vulcanization accelerator, a thiazole vulcanization accelerator, a dithiocarbamate vulcanization accelerator, and a thiuram vulcanization accelerator such that a thiourea vulcanization accelerator/thiazole vulcanization accelerator/dithiocarbamate vulcanization accelerator/thiuram vulcanization accelerator weight ratio is in a range of 1 to 20/1 to 20/1 to 20/1 to 30.
摘要:
There is provided an EPDM foam including, in which an amount of N-nitrosodimethylamine and N-nitrosodiethylamine generated therefrom by heating the EPDM foam at 200° C. for three hours is not more than 1 μg/g, and a 50% compression load value thereof is in a range of 0.10 to 2.0 N/cm2.
摘要翻译:提供了一种EPDM泡沫体,其中通过在200℃下加热三元乙丙橡胶泡沫体3小时而产生的N-亚硝基二甲胺和N-亚硝基二乙胺的量不超过1μg/ g,压缩载荷为50% 其值在0.10〜2.0N / cm 2的范围内。
摘要:
A typewriter ribbon lifting mechanism includes a holder supporting a printing ribbon and a correction ribbon below the printing ribbon. The holder is vertically tiltable for lifting the printing or correction ribbon selectively from its inoperative position to its operative position. The holder is normally held in its lowered inoperative position. A cam follower is secured to the holder and supports an axially movable follower pin thereon. A ribbon lift cam is rotatable only in one direction to cause the cam follower to tilt the holder vertically. The cam has a first cam groove in which the follower pin is engageable to raise the holder to place the printing ribbon in its operative position, and a second cam groove in which the follower pin is engageable to raise the holder to place the correction ribbon in its operative position. The second cam groove has a portion which forms a part of the first cam groove, while the remaining portion of the second cam groove is greater in depth than the first cam groove. A spring is provided for urging the follower pin into engagement with the bottom of the first or second cam groove. An electromagnet device is provided for effecting the correction of any printing error, and causes the cam follower to raise the follower pin so that the follower pin may be engaged with the second cam groove.
摘要:
A thrust yoke is fixed into a second recessed portion of a base with adhesive. The second recessed portion has a first surface to be in contact with the bottom surface of the thrust yoke, and a second surface axially opposing the bottom surface of the thrust yoke with a gap therebetween. The thrust yoke has a bent portion at its radial end. The bent portion is bent downward. The thrust yoke also has a protruding portion extending downward from the bent portion. The protruding portion axially opposes the second surface of the second recessed portion of the base with a gap therebetween.
摘要:
A data processing apparatus provides excellent printing quality even though it employs an impact printer which is subject to mechanical vibrations during the typing operation. The apparatus comprises a highly rigid chassis frame for respectively supporting the printer and CRT in upper and lower portions of the frame and to withstand outside factors which adversely affect the printing quality. At the same time, inclination of the CRT is adjusted to provide the minimum size of the combined equipment and easy printing check within an area of an operator's eye sight. A shielding plate is also provided on the upper chassis to mount the printer and to prevent leaked magnetic flux from adversely affecting the CRT and printing quality.