公开(公告)号：CA1111309A

公开(公告)日：1981-10-27

申请号：CA292134

申请日：1977-12-01

Applicant: IBM

Inventor： HASLER WERNER ,  PADMANABHAN SUBRAMANIAM ,  LENNEMENN ECKART

IPC: B41J1/20 ,  B41J7/36 ,  B41J9/00 ,  B41J9/10 ,  G06K15/06 ,  G06K15/08 ,  B41J9/30

Abstract: IMPACT PRINTER A type chain printer with hammer unit and printing chain comprises an interposer providing different character densities. The interposer consists of several interposer elements, each interposer element having one hammer and one printing position associated thereto. An interposer comb is provided for miniprint high density where each hammer has an associated interposer element and there is an interposer comb for standard print lower density where not all the hammers have an associated interposer element. Different character densities can be achieved with one and the same printing chain, or by using exchangeable printing chains of different character densities.