Method for forming a staggered recording head
US4417391A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 1982 |
| Grant date | Nov 29, 1983 |
| Priority date | — |
| Expiry date | Jun 8, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49117
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A recording head for use in an electrostatic printer comprises four staggered rows of styli formed by a novel method wherein the styli in the second row are formed between the styli in the first row and the styli in the third and fourth rows are formed by making use of the grooves formed between the styli in the first and second rows. By forming the rows of styli on a cylindrical drum, two recording heads are obtained from each fabrication run wherein the recording head in one set of styli is the mirror image of the recording head in the other set of styli. Should an error occur in the manufacture of the styli by placing the third row of styli in the grooves where the fourth row of styli normally belongs, the resulting recording heads are identical to those obtained with the proper placement of the third and fourth rows with the exception that the position on the drum of each type of recording head is reversed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.