EP 0032997 A3 19830629 - ERASING TYPEWRITER WITH AUTOMATIC SELECTION OF AUTOMATIC OR MANUAL ERASE MODE
Title (en)
ERASING TYPEWRITER WITH AUTOMATIC SELECTION OF AUTOMATIC OR MANUAL ERASE MODE
Publication
Application
Priority
US 11673380 A 19800130
Abstract (en)
[origin: EP0032997A2] In response to actuation of the erase key, the typewriter determines whether automatic erasing is possible i.e. whether the selected location of the memory contains an erasable character. If the selected memory location contains an erasable character, an AND gate (100), subjected to inputs identifying an erase key actuation and a character code from the memory decode, provides an output which causes the execution of an erase cycle. If the selected memory location does not contain an erasable character, the typewriter terminates the erase cycle with a backspace, and an AND gate (101) or an AND gate (102) causes the setting of a manual erase latch (112). Actuation of a character key as the next actuated key completes the manual erase, through AND gate (103). Actuation of a key other than a character key resets latch (112) through AND gates (104, 105, 106).
IPC 1-7
IPC 8 full level
B41J 5/30 (2006.01); B41J 5/46 (2006.01); B41J 29/36 (2006.01)
CPC (source: EP)
B41J 5/46 (2013.01); B41J 29/36 (2013.01)
Citation (search report)
- [A] GB 2021831 A 19791205 - IBM
- [AD] GB 2021830 A 19791205 - IBM
- [AD] US 3780846 A 19731225 - KOLPEK R, et al
- [A] US 3278897 A 19661011 - GEORGE ASHBY CHARLES, et al
Designated contracting state (EPC)
BE CH DE FR GB IT LI NL
DOCDB simple family (publication)
EP 0032997 A2 19810805; EP 0032997 A3 19830629; EP 0032997 B1 19850313; CA 1158588 A 19831213; DE 3070295 D1 19850418; ES 498831 A0 19820401; ES 8203717 A1 19820401; JP S56113489 A 19810907; JP S6013834 B2 19850409; MX 152308 A 19850626
DOCDB simple family (application)
EP 80107705 A 19801208; CA 365225 A 19801121; DE 3070295 T 19801208; ES 498831 A 19810127; JP 398581 A 19810116; MX 18575181 A 19810128