公开(公告)号：US3921879A

公开(公告)日：1975-11-25

申请号：US45740674

申请日：1974-04-03

Applicant: RCA CORP

Inventor： PETERS KENNETH DONALD

IPC: B41J15/04 ,  B41J15/16 ,  B65H20/04 ,  B65H17/22

CPC classification number: B65H20/04 ,  B41J15/04 ,  B41J15/16

Abstract: Web advancing mechanism suitable for use in, for example, a low cost strip printer. A pair of torsion springs surround a cylindrical capstan. A free end of each spring is attached to a member which applies torque to the springs to urge the capstan into contact with the web. An advance mechanism causes the capstan to be incrementally rotated in one direction to advance the web, but also, while resetting, urges the capstan in the opposite direction. The torsion springs decrease in effective diameter when the capstan is urged in the opposite direction, the friction created thereby providing braking action to prevent movement of the cylinder in the opposite direction.

Abstract translation: 纸张推进机构适用于例如低成本条形打印机。 一对扭簧围绕圆柱形绞盘。 每个弹簧的自由端附接到向弹簧施加扭矩以促使绞盘与腹板接触的构件。 前进机构使绞盘在一个方向上递增地旋转以推进幅材，而且在复位时也以相反的方向促使绞盘。 当主导轴被推向相反方向时，扭力弹簧的有效直径减小，由此产生的摩擦力提供制动作用，以防止气缸在相反方向上的移动。

公开(公告)号：DE2820997A1

公开(公告)日：1978-11-23

申请号：DE2820997

申请日：1978-05-12

Applicant: RCA CORP

Inventor： PETERS KENNETH DONALD ,  ANDERSON CHARLES HAMMOND

IPC: H01J29/87 ,  H01J31/12 ,  H01J31/20

Abstract: An evacuated envelope having a plurality of spaced, parallel support walls extending between and substantially perpendicular to flat substantially parallel front and back walls to provide a plurality of parallel channels extending along the front and back walls. The front and back walls and the support walls are of an electrically insulating material, typically glass. Compressed between each of the support walls and the front wall is a metal strip which serves as the tip of the support wall and which extends along the entire length of the support wall. Each tip is tapered in thickness from a thickness substantially equal to the thickness of the support wall at the support wall to a thinner thickness at the front wall. Means is provided between each metal tip and either the support wall or the front wall to prevent movement of the tip transversely of the channels. A shadow mask extends across each of the channels and extends between the metal tips and the support walls. The shadow mask is held in proper position with respect to the phosphor screen on the inner surface of the front wall by the metal tips.