Printing – Multicolor – Rotary machines
Patent
1987-11-30
1989-06-13
Burr, Edgar S.
Printing
Multicolor
Rotary machines
101408, 101365, B41F 502, B41F 706, B41F 3102, B41F 3300
Patent
active
048381608
ABSTRACT:
An abnormal sheet detecting unit for conventional sheet fed rotary printing presses. This unit includes either a double-diameter cylinder or a support plate which is in contact with a traveling printed sheet in order to keep the sheet taut. The unit further includes a detecting apparatus, arranged above, respectively, the double-diameter cylinder or the support plate, for detecting a printing density of the taut printed sheet.
REFERENCES:
patent: 1447334 (1923-03-01), Bacon
patent: 3918363 (1975-11-01), Southam et al.
patent: 4222326 (1980-09-01), Mathes et al.
patent: 4409895 (1983-10-01), Fischer
patent: 4413562 (1983-11-01), Fischer
patent: 4517221 (1985-05-01), Holl
patent: 4568185 (1986-02-01), Leuerer
Asher Kimberly L.
Burr Edgar S.
Ignatowski James R.
Komori Printing Machinery Co. Ltd.
VanOphem Remy J.
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