[54] LED CARRIAGE SELECTIVELY MOVABLE IN TWO DIRECTIONS
[75] Inventor: Minora Isobe, Tokyo, Japan
[73] Assignee: Old Electric Industry Co., Ltd., Tokyo, Japan
[21] Appl. No.: 836,826
[22] Filed: Feb. 19,1992
[30] Foreign Application Priority Data
Feb. 28, 1991 [JP] Japan 3-034814
Mar. 13, 1991 [JP] Japan 3-048168
[51] Int. CI.' G03G 15/04
[52] U.S. CI 355/228; 346/155
[58] Field of Search 355/228, 229;
346/107 R, 154, 155
[56] References Cited
U.S. PATENT DOCUMENTS
4,325,070 4/1982 Akasaki et al 346/108
4,435,064 3/1984 Tsukada et al 346/107 R
4,566,015 1/1986 MacKenzie 346/107 R
4,743,927 5/1988 Sasaki 346/160
FOREIGN PATENT DOCUMENTS
2631850 1/1978 Fed. Rep. of Germany .
58-58553 4/1983 Japan .
61- 185759 8/1986 Japan .
62-50727 3/1987 Japan .
62- 140859 6/1987 Japan .
62-222861 9/1987 Japan .
OTHER PUBLICATIONS
Patent Abstracts of Japan, vol. 6, No. 254 (E-148)
(1132); 14 Dec. 1982 & JP-a-57 152 273 (Ricoh); 20 Sep. 1982; "Abstract".
Patent Abstracts of Japan, vol. 13, No. 426 (P-935) (3774); 22 Sep. 1989 & JP-A-1 159 674 (Canon); 22 Jun. 1989; "Abstract".
Primary Examiner—A. T. Grimley
Assistant Examiner—Nestor R. Ramirez
Attorney, Agent, or Firm—Spencer, Frank & Schneider
[57] ABSTRACT
An electrophotographic recording apparatus includes a plurality of light emitting elements each for irradiating a photoconductive surface of a photoconductor and each having one-luminescent portion per chip; and a driver for reciprocating a carriage in rightward and leftward directions along an arrangement direction of the light emitting elements and in forward and backward directions along a moving direction of the photoconductive surface of the photoconductor. In the apparatus, there is provided such a control that the carriage is moved forward at a speed synchronized with a movement of the photoconductive surface of the photoconductor, while moved rightward or leftward, in succession, the carriage is moved backward in a state that the carriage is not moved at all or hardly moved in the rightward and leftward directions, in succession, the carriage is moved forward at the a speed synchronized with the movement of the photoconductive surface of the photoconductor, while moved leftward or rightward, and in succession, the carriage is moved backward in a state that the carriage is not moved at all or hardly moved in the rightward and leftward directions.
30 Claims, 8 Drawing Sheets
